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Plug Power

plug · NASDAQ Industrials
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Employees 201-500
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FY2008 Annual Report · Plug Power
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UNITED STATES 

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark One)

 

 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES  
EXCHANGE ACT OF 1934

  For the fiscal year ended December 31, 2008

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES 
EXCHANGE ACT

For the transition period from               to              

Commission file number: 0-27527

PLUG POWER INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware
(State or Other Jurisdiction 
of Incorporation or Organization)

22-3672377
(I.R.S. Identification 
Number)

968 ALBANY SHAKER ROAD, LATHAM, NEW YORK 12110
(Address of Principal Executive Offices, including Zip Code)

(518) 782-7700
(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class
Common stock, par value $.01 per share

Name of Each Exchange on Which Registered
The NASDAQ Global Market

Securities registered pursuant to Section 12(g) of the Act:  None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.  Yes    No  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.  Yes    No  

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Sections 13 or 15(d) of the Securities Exchange Act 
of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such 
filing requirements for the past 90 days.  Yes    No  

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, 
to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any 
amendment to this Form 10-K.  

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer,  or  a  smaller  reporting 
company. See the definitions of “large accelerated filer,” “accelerated filer,” “non-accelerated filer,” and “smaller reporting company” in Rule 12b-2 of 
the Exchange Act. (Check one):

Large accelerated filer  

Accelerated filer  

Non-accelerated filer  

Smaller reporting company  

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).  Yes    No  

The aggregate market value of the voting and non-voting common equity of the registrant held by non-affiliates of the registrant on June 30, 2008 

was $77.8 million.

As of March 6, 2009, 128,093,232 shares of the registrant’s common stock were issued and outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the definitive proxy statement relating to the registrant’s 2009 Annual Meeting of stockholders are incorporated by reference into Part 

III of this report to the extent described therein.

 
 
INDEX TO FORM 10-K

Item 1.
Business  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 1A. Risk Factors  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 1B. Unresolved Staff Comments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 2.
Legal Proceedings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 3.
Submission of Matters to a Vote of Security Holders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 4.

PART II

Item 5.

Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer  

Purchases of Equity Securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Selected Financial Data  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 6.
Item 7.
Management’s Discussion and Analysis of Financial Condition and Results of Operations . . . . . . .
Item 7A. Quantitative and Qualitative Disclosures About Market Risk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 8.
Financial Statements and Supplementary Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure . . . . . . .
Item 9.
Item 9A. Controls and Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Item 9B. Other Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PART III

Item 10.
Item 11.
Item 12.

Item 13.
Item 14.

Directors, Executive Officers and Corporate Governance  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Executive Compensation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Security Ownership of Certain Beneficial Owners and Management and Related  

Stockholder Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Certain Relationships and Related Transactions, and Director Independence . . . . . . . . . . . . . . . . . .
Principal Accounting Fees and Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Page
3
8
16
16
16
17

17
19
19
34
34
34
34
35

35
35

35
36
36

Item 15.

Exhibits and Financial Statement Schedules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

37

PART IV

2

FORWARD-LOOKING STATEMENTS

PART I

The following discussion should be read in conjunction with our accompanying Consolidated Financial Statements 
and Notes thereto included within this Annual Report on Form 10-K. In addition to historical information, this Annual 
Report on Form 10-K and the following discussion contain statements that are not historical facts and are considered 
forward-looking within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act. These 
forward-looking statements contain projections of our future results of operations or of our financial position or state 
other forward-looking information. In some cases you can identify these statements by forward-looking words such 
as “anticipate,” “believe,” “could,” “estimate,” “expect,” “intend,” “may,” “should,” “will” and “would” or similar 
words. We believe that it is important to communicate our future expectations to our investors. However, there may be 
events in the future that we are not able to accurately predict or control and that may cause our actual results to differ 
materially from the expectations we describe in our forward-looking statements. Investors are cautioned not to rely on 
forward-looking statements because they involve risks and uncertainties, and actual results may differ materially from 
those discussed as a result of various factors, including, but not limited to: the risk that our restructurings result in 
greater restructuring charges or less cost savings than anticipated; the risk that unit orders will not ship, be installed 
and/or convert to revenue, in whole or in part; our ability to develop commercially viable energy products; the cost 
and timing of developing our energy products; market acceptance of our energy products; our ability to manufacture 
energy products on a large-scale commercial basis; competitive factors, such as price competition and competition 
from other traditional and alternative energy companies; the cost and availability of components and parts for our 
energy products; the cost and availability of fuel and fueling infrastructures for Plug Power’s energy products; the 
ability to raise and provide the necessary capital to develop, manufacture and market our energy products; our ability 
to  establish  relationships  with  third  parties  with  respect  to  product  development,  manufacturing,  distribution  and 
servicing and the supply of key product components; our ability to protect our intellectual property; our ability to 
lower the cost of our energy products and demonstrate their reliability; the cost of complying with current and future 
governmental  regulations;  fluctuations  in  the  trading  price  and  volume  of  our  common  stock;  and  other  risks  and 
uncertainties discussed under Item IA—Risk Factors. Readers should not place undue reliance on our forward-looking 
statements. These forward-looking statements speak only as of the date on which the statements were made and are 
not guarantees of future performance. Except as may be required by applicable law, we do not undertake or intend to 
update any forward-looking statements after the date of this Annual Report on Form 10-K.

ITEM 1.  BUSINESS

COMPANY BACKGROUND

Plug  Power  Inc.,  or  the  Company,  is  a  development  stage  enterprise  involved  in  the  design,  development  and 
manufacture  of  fuel  cell  systems  for  industrial-motive  (forklift  or  material  handling)  markets  and  stationary  power 
markets  worldwide.  We  are  a  development  stage  enterprise  because  substantially  all  of  our  resources  and  efforts 
are aimed at the discovery of new knowledge that could lead to significant improvement in fuel cell reliability and 
durability,  and  the  establishment,  expansion  and  stability  of  markets  for  our  products.  We  continue  to  experience 
significant net outflows of cash from operations and devote significant efforts towards financial planning in order to 
forecast future cash spending and the ability to continue product development, manufacturing and sales activities. Fuel 
cell technology within our targeted markets – material handling, remote prime power, residential combined heat and 
power and wireless and wireline telecommunications - is still early in the technology adoption life cycle.

We  are  focused  on  proton  exchange  membrane,  or  PEM,  fuel  cell  and  fuel  processing  technologies  and  fuel 
cell/battery hybrid technologies, from which multiple products are available. A fuel cell is an electrochemical device 
that combines hydrogen and oxygen to produce electricity and heat without combustion. Hydrogen is derived from 
hydrocarbon fuels such as natural gas, propane, methanol, ethanol, gasoline or biofuels. Hydrogen can also be obtained 
from the electrolysis of water. Hydrogen can be purchased directly from industrial gas providers or can be produced 
on-site at consumer locations.

We sell our products worldwide through a product sales force. We sell to business, industrial and government 

customers.

3

We  were  organized  in  the  State  of  Delaware  on  June  27,  1997  and  became  listed  on  the  NASDAQ  exchange 
on October 29, 1999. We were originally a joint venture between Edison Development Corporation and Mechanical 
Technology Incorporated. In 2007 we merged with and acquired all the assets, liabilities and equity of Cellex Power 
Products, Inc. (Cellex) and General Hydrogen Corporation (General Hydrogen). 

Unless the context indicates otherwise, the terms “Company,” “Plug Power,” “we,” “our” or “us” as used herein 

refers to Plug Power Inc. (the registrant) and its subsidiaries.

BUSINESS STRATEGY

We are committed to developing effective, economical and reliable fuel cell products and services for businesses, 
government  agencies  and,  ultimately,  commercial  consumers.  Building  on  our  substantial  fuel  cell  application  and 
product  integration  experience,  we  are  initially  focused  on  building  strong  relationships  with  customers  who  value 
increased reliability, productivity, energy security and a sustainable future.

Our  business  strategy  leverages  our  unique  fuel  cell  application  and  integration  knowledge  to  identify  early 
adopter markets for which we can design and develop innovative systems and customer solutions that provide superior 
value, ease-of-use, and environmental design. 

We continue to survey the market and evaluate our best opportunities to drive market adoption and a path to 
profitability for Plug Power. Currently, our primary focus and resource commitment is on our GenDrive™ solution for 
the material handling (forklift) market. 

We believe continued investment in research and development is critical to the development and enhancement of 
innovative products, technologies and services. In addition to evolving our direct hydrogen fueled systems, we continue 
to capitalize on our investment in power electronics, controls, software and reforming technology.

Our strategy also includes expanding our sales network to effectively reach more of our targeted customers and 

provide them with high-quality products, service and post-sales support experience.

We  are  striving  to  meet  longer-term  objectives  of  delivering  economic,  social,  and  environmental  benefits  in 

terms of reliable, clean, cost-effective fuel cell solutions and, ultimately, sustainability.

BUSINESS ORGANIzATION

We manage our business as a single development stage enterprise, emphasizing shared learning across end-user 

applications and common supplier/vendor relationships.

PRODUCTS

We continue to develop a range of fuel cell products and services including hydrogen fuel cell low-temperature 
Proton Exchange Membrane (PEM) systems for motive, continuous and backup power and a high-temperature fuel cell 
system for residential and light commercial co-generation.

Our primary product lines that we sell and continue development work on are discussed below:

 GenDrive™ —Hydrogen fueled PEM fuel cell system to provide power to industrial vehicles. We are focusing 
our  primary  efforts  on  material  handling  (forklift)  and  automated  guided  vehicles  (AGV)  at  multi-shift  high 
volume manufacturing and high throughput distribution sites where we believe our products and services provide 
a unique combination of productivity, flexibility and environmental benefits. In 2008, we continue to expand 
our  sales  and  demonstrations  to  commercial  and  governmental  customers  including  Wal-Mart,  Bridgestone 
Firestone, Nestle, Central Grocers and Sysco Foods. We expect continued sales momentum in 2009 with our key 
target customers. 

 GenSys® —Natural gas or liquid petroleum gas (LPG) fueled continuous power system. We continue to develop a 
low-temperature (70ºC) PEM fuel cell system that supports remote prime power applications, specifically for the 
telecommunications sector, where grid power is unreliable or non-existent. We successfully completed field trials 
for a low-temperature GenSys product at a Tata Teleservices Ltd. cell tower site in remote India. 

 In  connection  with  the  development  of  our  GenSys  platform,  we  are  developing  a  high-temperature  (180ºC) 
polybenzimidazole  (PBI)  combined  heat  and  power  fuel  cell  system  for  light  commercial  and  residential 
applications producing high quality heat and supplemental electricity. We will partner with the U.S. Department 

4

of  Energy  and  National  Grid  to  conduct  the  first  field  trial  of  the  high-temperature  GenSys  product  in  2009. 
Learning from the field trial will help determine system refinements for incorporation into the next-generation 
system design. 

 Additionally in 2008, we provided manufacturing and sales support to our GenCore® product — Hydrogen fueled 
PEM  fuel  cell  system  to  provide  back-up  power  to  businesses  and  government  in  critical  infrastructure.  We 
continue to work with certain established customers on future initiatives related to this product. 

 Also, we developed technology in support of the automotive fuel cell market under a series of agreements with 
Honda R&D Co Ltd. of Japan (Honda), a subsidiary of Honda Motor Co., Ltd. Under these agreements we have 
developed  and  tested,  on  a  joint  and  exclusive  basis,  four  phases  of  prototype  fuel  cell  systems  that  provide 
electricity and heat to a home, while also providing hydrogen fuel for a fuel cell vehicle. Since 2003 we have 
successfully demonstrated four successive prototype generations of this system at Honda R&D Americas’ facility 
in Torrance, California and at Plug Power’s facility in Latham, NY. In 2009 we will continue to provide service 
for the current model of the Home Energy Station located at Honda’s Torrance, California facility.

PRODUCT SUPPORT & SERVICES

To  promote  fuel  cell  adoption  and  maintain  post-sale  customer  satisfaction,  we  offer  a  range  of  service  and 
support options for customers of all our product offerings. These options include installation, commissioning, fueling 
and assistance that is built into software, printed and electronic product manuals, online support, as well as on-site 
technical support.

GenDrive  product  support  and  services  may  also  include  training  and  working  directly  with  lift  truck  dealer 
networks with established service personnel. These personnel will assist with the commissioning and installation of 
GenDrive units and in some cases will be used to carry out regularly scheduled preventative maintenance.

MARKETS/GEOGRAPHY

Our commercial sales for GenDrive power units are in the material handling market segments which consist of 
large fleet, multi-shift operations in high volume manufacturing and high throughput distribution. In 2008, 100% of 
our installations were in North America.

We  received  358  orders  for  our  GenDrive  product  during  the  year  ending  December  31,  2008.  Backlog  on 
December 31, 2008 was 341 units representing approximately $6.4 million which includes approximately $1.1 million 
related to 45 GenDrive units that were previously funded under various government projects.

GenDrive
Shipments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cancellations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Orders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backlog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008
132
4
358
341

2007
47
—
94
119

Commercial  sales  of  GenCore  stationary  back-up  power  systems  primarily  support  the  telecommunications 
industry. We received 109 orders during the year ending December 31, 2008. Backlog on December 31, 2008 was 140 
units representing approximately $1.8 million.

GenCore
Shipments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cancellations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Orders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Backlog . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008
146
7
109
140

2007
180
313
106
184

We satisfied our orders for our GenSys product during the year ending December 31, 2008. During the year we 

received 5 orders for the product. There was no backlog on December 31, 2008. 

We have accepted orders that require certain conditions or contingencies to be satisfied prior to shipment, some of 
which are outside of our control. Historically, shipments made against these orders can occur between thirty (30) days 
and twenty-four (24) months from the date of acceptance of the order.

5

Final assembly of products that we sell is performed primarily at our manufacturing facility in Latham, New 
York. Currently, the supply and manufacture of several critical components used in our products are performed by 
sole-sourced third-party vendors in the U.S. and Canada.

DISTRIBUTION, MARKETING AND STRATEGIC RELATIONSHIPS

We have developed an extended enterprise by forming strategic relationships with well-established companies 
in key areas including distribution, service, marketing, supply, technology development and product development. We 
sell our products through our direct sales force, original equipment manufacturers (OEMs) and their dealer networks. 
Our customers have no special right of return, price protection allowances or other sales incentives. We offer a discount 
from our manufacturers suggested retail price to resellers to allow for the mark-up of the reseller.

COMPETITION

We are confronted by aggressive competition in all areas of our business. The markets we address for motive and 
stationary power are characterized by the presence of well-established commodity battery and combustion generator 
products in addition to several competing fuel cell companies.

Over the past several years, price competition in these markets has been particularly intense. 

The principal competitive factors  in  the markets  in  which  we  operate include price,  product features,  relative 
price/performance, product quality and  reliability, design innovation, marketing and distribution capability, service 
and support, and corporate reputation.

In  the  material  handling  power  market,  we  believe  our  GenDrive  systems  have  an  advantage  over  lead  acid 
batteries for customers who run high throughput, multi shift operations by offering increased productivity with lower 
operational  costs.  However,  we  expect  competition  in  this  space  to  intensify  as  competitors  attempt  to  imitate  our 
approach with their own offerings. Some of these current and potential competitors have substantial resources and may 
be able to provide such products and services at little or no profit or even at a loss to compete with our offerings.

INTELLECTUAL PROPERTY

We  believe  that  neither  we  nor  our  competitors  can  achieve  a  significant  proprietary  position  on  the  basic 
technologies currently used in PEM fuel cell systems. However, we believe the design and integration of our system and 
system components, as well as some of the low-cost manufacturing processes that we have developed, is intellectual 
property that can be protected.

During 2008 we increased our technology portfolio by adding 7 new U.S. patents. At December 31, 2008 we have 
a total of 148 U.S. patents and 7 foreign patents, and we currently have over 110 patents pending worldwide. Our patent 
portfolio decreased in 2008 as we began to focus our intellectual property protection on our current product offerings. 
Additionally, there are 29 pending patent applications filed on behalf of Honda relating to development work on the 
Home Energy Station (HES) to which we have certain rights. The technology portfolio covers among other things: 
fuel  cell  components  that  reduce  manufacturing  part  count;  fuel  cell  system  designs  that  lend  themselves  to  mass 
manufacturing; improvements to fuel cell system efficiency, reliability and system life; and control strategies, such as 
added safety protections and operation under extreme conditions. In general, our employees are party to agreements 
providing that all inventions (whether patented or not) made or conceived while an employee of Plug Power, which are 
related to or result from work or research that Plug Power performs, will remain the sole and exclusive property of Plug 
Power.

GOVERNMENT REGULATION

We do not believe that we will be subject to existing federal and state regulatory commissions governing traditional 
electric utilities and other regulated entities. Our products and their installations are, however, subject to oversight and 
regulation at the state and local level in accordance with state and local statutes and ordinances relating to, among 
others, building codes, fire codes, public safety, electrical and gas pipeline connections and hydrogen siting. The level 
of regulation may depend, in part, upon where a system is located. For example, the 2008 National Electrical Code, or 
NEC, is a model code written by the National Fire Protection Association, or (NFPA) that governs the electrical wiring 
of most homes, businesses and other buildings. The NEC has been adopted by local jurisdictions throughout the United 

6

States and is enforced by local officials, such as building and electrical inspectors. Article 692 of the NEC governs the 
installation of fuel cell systems. Accordingly, all of our stationary products installed in a jurisdiction that has adopted 
the NEC are installed in accordance with Article 692.

In addition, product safety standards have been established by the American National Standards Institute (ANSI) 
covering the overall fuel cell system. Our GenCore product has been certified by independent third-parties to be in 
compliance  with  such  standards,  and  an  assessment  of  our  GenDrive  product  will  begin  in  2009.  Other  than  these 
requirements, at this time we do not know what additional requirements, if any, each jurisdiction will impose on our 
products or their installation. We also do not know the extent to which any new regulations may impact our ability to 
distribute, install and service our products. As we continue distributing our systems to our target markets, the federal, 
state or local government entities or competitors may seek to impose regulations.

RAW MATERIALS

Although most components essential to our business are generally available from multiple sources, we currently 
obtain  certain  key  components  including,  but  not  limited  to,  fuel  cell  stack  materials  and  energy  storage  devices, 
from single or limited sources. In 2008, Plug Power signed a supply agreement with Ballard Power Systems through 
December 31, 2010. Under this agreement, Ballard will remain the exclusive supplier of fuel cell stacks for Plug Power’s 
GenDrive product line. 

We believe there are several component suppliers and manufacturing vendors whose loss to the Company could 
have  a  material  adverse  effect  upon  our  business  and  financial  condition.  At  this  time,  such  vendors  include,  but 
are not limited to, Ballard Power Systems, BASF Fuel Cells, 3M Co. and Dana Corporation. We attempt to mitigate 
these potential risks by working closely with these and other key suppliers on product introduction plans, strategic 
inventories, coordinated product introductions and internal and external manufacturing schedules and levels.

RESEARCH AND DEVELOPMENT

Because the fuel cell industry is characterized by its early state of adoption, our ability to compete successfully 
is  heavily  dependent  upon  our  ability  to  ensure  a  continual  and  timely  flow  of  competitive  products,  services,  and 
technologies  to  the  marketplace.  We  continue  to  develop  new  products  and  technologies  and  to  enhance  existing 
products in the areas of cost, size, weight, and in supporting service solutions in order to drive commercialization. 
We may expand the range of our product offerings and intellectual property through licensing and/or acquisition of 
third-party business and technology. Our research and development expense totaled $35.0 million, $39.2 million and 
$41.6 million in 2008, 2007 and 2006, respectively. We also had cost of research and development contract revenue of 
$21.5 million, $19.0 million and $7.6 million in 2008, 2007 and 2006, respectively. These expenses represent the cost 
of research and development programs that are partially funded under cost reimbursement research and development 
arrangements with third parties.

EMPLOYEES

As of December 31, 2008, we had a total staff of 208 employees. Plug Power adopted restructuring plans in 2008 
intended to focus the Company on revenue growth, improve organizational efficiency and position the Company for 
long-term profitability. Details of the Company’s restructuring plans are available in previously filed Form 8-K reports 
dated June 10, 2008 and December 18, 2008 as filed on June 16, 2008 and December 22, 2008, respectively.

AVAILABLE INFORMATION

We  maintain  a  website  with  an  internet  address  of  www.plugpower.com.  The  information  contained  on  our 
website is not included as a part of, or incorporated by reference into, this Annual Report on Form 10-K. Other than 
an investor’s own internet access charges, we make available free of charge, through our website, our Annual Report 
on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to these reports, as 
soon as reasonably practicable after we have electronically filed such material with, or furnished such material to, the 
Securities and Exchange Commission.

7

ITEM 1A.  RISK FACTORS

The following factors should be considered carefully in addition to the other information in this Form 10-K. Except 
as mentioned under “Quantitative and Qualitative Disclosure About Market Risk” and except for the historical information 
contained herein, the discussion contained in this Form 10-K contains “forward-looking statements,” within the meaning 
of Section 27A of the Securities Act and Section 21E of the Exchange Act, that involve risks and uncertainties. Our actual 
results could differ materially from those discussed in this Form 10-K. Important factors that could cause or contribute to 
such differences include those discussed below, as well as those discussed elsewhere herein.

Delays in our product development could have a material impact on the commercialization of our products.

If we experience delays in meeting our development goals, our products exhibit technical defects, or if we are 
unable to meet cost or performance goals, including power output, useful life and reliability, the commercialization of 
our products will be delayed. In this event, potential purchasers of our products may choose alternative technologies and 
any delays could allow potential competitors to gain market advantages. We cannot assure you that we will successfully 
meet our commercialization schedule in the future.

We  may  never  complete  the  research  and  development  of  certain  commercially  viable  energy  and  material 
handling products.

We are a development stage company. Other than our GenCore and certain products within our GenDrive product 
family, which we believe to be commercially viable at this time, we do not know when or whether we will successfully 
complete research and development of other commercially viable energy and material handling products. If we are unable 
to develop additional commercially viable energy and material handling products, we will not be able to generate sufficient 
revenue to become profitable. The commercialization of our products depends on our ability to reduce the costs of our 
components and subsystems, and we cannot assure you that we will be able to sufficiently reduce these costs. In addition, 
the commercialization of our products requires achievement and verification of their overall reliability, efficiency and 
safety targets, and we cannot assure you that we will be able to develop, acquire or license the technology necessary to 
achieve these targets. Although we continue to increase the number of units sold in our GenCore and GenDrive products, 
we must complete additional research and development to fill out the product portfolio and deliver enhanced functionality 
and reliability before we will be able to manufacture commercially viable products in commercial quantities. In addition, 
while we are conducting tests to predict the overall life of our products, we may not have run our products over their 
projected useful life prior to large-scale commercialization. As a result, we cannot be sure that our products will last as 
long as predicted, resulting in possible warranty claims and commercial failures.

We have incurred losses and anticipate continued losses for at least the next several years.

As of December 31, 2008 we had an accumulated deficit of $639.7 million. We have not achieved profitability in 
any quarter since our formation and expect to continue to incur net losses until we can produce sufficient revenue to 
cover our costs, which is not expected to occur for at least the next several years. We anticipate that we will continue to 
incur losses until we can produce and sell our products on a large-scale and cost-effective basis. However, we cannot 
predict when we will operate profitably, if ever. Even if we do achieve profitability, we may be unable to sustain or 
increase our profitability in the future.

We are still a development stage company.

We were formed in June 1997 to further the research and development of stationary fuel cell systems. While we 
delivered our initial product in the third quarter of 2001, our initial GenCore product in the fourth quarter of 2003 and 
our GenDrive product in the third quarter of 2007, we do not expect to be profitable for at least the next several years. 
Before investing in our common stock, you should consider the challenges, expenses and difficulties that we will face 
as a development stage company seeking to develop and manufacture new products.

Our financial results could be negatively impacted by impairments of goodwill or other intangible assets required 
by SFAS 142 and the application of future accounting policies or interpretations of existing accounting policies.

In accordance with Statement of Financial Accounting Standards No. 142, Goodwill and Other Intangible Assets 
referred to as “SFAS 142,” we perform an annual assessment on goodwill and other intangible assets for impairment 
and also an assessment if an event occurs or circumstances change that would more likely than not reduce the fair 

8

value of a reporting unit below it’s carrying amount. A downward revision in the fair value of one of our acquired 
businesses could result in impairments of goodwill under SFAS 142 and non-cash charges. Any charge resulting from 
the application of SFAS 142 could have a significant negative effect on our reported net loss. For example, in the fourth 
quarter of 2009, we recorded a non-cash impairment charge of $45.8 million relating to goodwill which resulted in an 
increase in our net loss for the quarter of $45.8 million. In addition, our financial results could be negatively impacted 
by  the  application  of  existing  and  future  accounting  policies  or  interpretations  of  existing  accounting  policies,  any 
continuing impact of SFAS 142 or any negative impact relating to the application of Statement of Financial Accounting 
Standards No. 144, Accounting for the Improvement and Disposal of Long-Lived Assets. 

A viable market for our products may never develop or may take longer to develop than we anticipate.

Our energy and material handling products represent emerging markets, and we do not know the extent to which 
our targeted customers will want to purchase them and whether end-users will want to use them. If a viable market fails 
to develop or develops more slowly than we anticipate, we may be unable to recover the losses we will have incurred to 
develop our products and may be unable to achieve profitability. The development of a viable market for our products 
may be impacted by many factors which are out of our control, including:

•	
•	
•	
•	
•	
•	
•	

the cost competitiveness of our products;

the future costs of natural gas, propane, hydrogen and other fuels expected to be used by our products;

consumer reluctance to try a new product;

consumer perceptions of our products’ safety;

regulatory requirements;

barriers to entry created by existing energy providers; and

the emergence of newer, more competitive technologies and products.

We have no experience manufacturing our products on a large-scale commercial basis and may be unable to do so.

To  date,  we  have  focused  primarily  on  research,  development  and  low  volume  manufacturing  and  have  no 
experience  manufacturing  our  products  on  a  large-scale  commercial  basis.  In  2000,  we  completed  construction  of 
our  50,000  square  foot  manufacturing  facility  and  have  continued  to  develop  our  manufacturing  capabilities  and 
processes. We do not know whether or when we will be able to develop efficient, low-cost manufacturing capabilities 
and processes that will enable us to manufacture our products in commercial quantities while meeting the quality, price, 
engineering, design, and production standards required to successfully market our products. Our failure to develop 
such manufacturing processes and capabilities could have a material adverse effect on our business, financial condition 
and results of operations. Even if we are successful in developing our manufacturing capabilities and processes, we do 
not know whether we will do so in time to meet our product commercialization schedule or to satisfy the requirements 
of our distributors or customers.

We have not developed and produced the products that we have agreed to sell to some of our customers.

We  have  not  developed  or  produced  certain  products  that  are  required  by  some  of  our  sales  and  customer 
agreements. There can be no assurance that we will complete development of products meeting specifications required 
by our sales and customer agreements and deliver them on schedule. Pursuant to certain agreements, the customers 
have the right to provide notice to us if, in their good faith judgment, we have materially deviated from the agreement. 
Should a customer provide such notice, and we cannot mutually agree to a modification to the agreement, then the 
customer may have the right to terminate the agreement.

Our orders may not ship or convert to revenue, in whole or in part.

We  have  accepted  orders  from  certain  customers  which  include  firm  orders,  stocking  orders  and  orders  that 
require certain conditions or contingencies to be satisfied prior to shipment, some of which are outside of our control. 
Historically, shipments made against these orders have occurred between thirty (30) days and twenty- four (24) months 
from the date of acceptance of the order. Orders received during the year ended December 31, 2008 totaled 472 units. 
Backlog on December 31, 2008 was 481 units. Of the unit orders in backlog on December 31, 2008, orders for 141 units 
were older than 12 months. The time periods from receipt of an order to shipment date and installation vary widely and 

9

are determined by a number of factors, including the terms of the customer contract and the customer’s deployment 
plan. Due to certain redesign elements to be satisfied prior to shipment of units under certain of our agreements, some 
of which are outside of the Company’s control, some or all of our orders may not ship or convert to revenue.

We may be unable to establish relationships, or we may lose existing relationships, with third parties for certain 
aspects of product development, manufacturing, distribution and servicing and the supply of key components 
for our products.

We will need to enter into additional strategic relationships in order to complete our current product development 
and commercialization plans. We will also require partners to assist in the sale, servicing and supply of components for 
our anticipated products, which are in development. If we are unable to identify or enter into satisfactory agreements 
with potential partners, including those relating to the distribution, service and support of our anticipated products, we 
may not be able to complete our product development and commercialization plans on schedule or at all. We may also 
need to scale back these plans in the absence of needed partners, which would adversely affect our future prospects 
for development and commercialization of future products. In addition, any arrangement with a strategic partner may 
require  us  to  issue  a  significant  amount  of  equity  securities  to  the  partner,  provide  the  partner  with  representation 
on our board of directors and/or commit significant financial resources to fund our product development efforts in 
exchange for their assistance or the contribution to us of intellectual property. Any such issuance of equity securities 
would reduce the percentage ownership of our then current stockholders. While we have entered into relationships 
with  suppliers  of  some  key  components  for  our  products,  we  do  not  know  when  or  whether  we  will  secure  supply 
relationships for all required components and subsystems for our products, or whether such relationships will be on 
terms that will allow us to achieve our objectives. Our business, prospects, results of operations and financial condition 
could be harmed if we fail to secure relationships with entities which can develop or supply the required components 
for our products and provide the required distribution and servicing support. Additionally, the agreements governing 
our current relationships allow for termination by our partners under certain circumstances, some of which are beyond 
our control. If any of our current strategic partners were to terminate any of its agreements with us, there could be a 
material adverse impact on the development and commercialization of our products and the operation of our business, 
financial condition, results of operations and prospects.

We rely on our partners to develop and provide components for our products.

A  supplier’s  failure  to  develop  and  supply  components  in  a  timely  manner  or  at  all,  or  to  develop  or  supply 
components that meet our quality, quantity or cost requirements, or our inability to obtain substitute sources of these 
components on a timely basis or on terms acceptable to us, could harm our ability to manufacture our products. In 
addition, to the extent that our supply partners use technology or manufacturing processes that are proprietary, we may 
be unable to obtain comparable components from alternative sources.

We face intense competition and may be unable to compete successfully.

The  markets  for  energy  products  are  intensely  competitive.  There  are  a  number  of  companies  located  in  the 
United  States,  Canada  and  abroad  that  are  developing  PEM  and  other  fuel  cell  technologies  and  energy  products 
that compete with our products. Some of our competitors in the fuel cell sector are much larger than we are and may 
have the manufacturing, marketing and sales capabilities to complete research, development and commercialization of 
commercially viable fuel cell products more quickly and effectively than we can.

In addition, there are many companies engaged in all areas of traditional and alternative energy generation in the 
United States, Canada and abroad, including, among others, major electric, oil, chemical, natural gas, battery, generator and 
specialized electronics firms, as well as universities, research institutions and foreign government-sponsored companies. 
These firms are engaged in forms of power generation such as solar and wind power, reciprocating engines and micro 
turbines, advanced battery technologies, as well as traditional grid-supplied electric power. Many of these entities have 
substantially greater financial, research and development, manufacturing and marketing resources than we do.

We must lower the cost of our products and demonstrate their reliability.

The initial capital cost of our fuel cell systems is currently significantly more than many established competing 
technologies. If we are unable to develop products that are competitive with competing technologies in terms of price, 
reliability and longevity, consumers will be unlikely to buy our products. The price of our products depends largely 

10

on  material  and  manufacturing  costs.  We  cannot  guarantee  that  we  will  be  able  to  lower  these  costs  to  the  level 
where we will be able to produce a competitive product or that any product produced using lower cost materials and 
manufacturing processes will not suffer from a reduction in performance, reliability and longevity.

Failure of our field tests could negatively impact demand for our products.

We are currently field-testing a number of our products, and we plan to conduct additional field tests in the future. 
We may encounter problems and delays during these field tests for a number of reasons, including the failure of our 
technology or the technology of third parties, as well as our failure to maintain and service our products properly. Many 
of these potential problems and delays are beyond our control. Any problem or perceived problem with our field tests 
could materially harm our reputation and impair market acceptance of, and demand for, our products.

Further regulatory changes and electric utility industry restructuring may affect demand for our products.

The  market  for  electric  power  generation  products  is  heavily  influenced  by  federal  and  state  governmental 
regulations  and  policies  concerning  the  electric  utility  and  telecommunications  industries.  A  change  in  the  current 
regulatory  policies  could  deter  further  investment  in  the  research  and  development  of  alternative  energy  sources, 
including fuel cells, and could result in a significant reduction in the demand for our products. We cannot predict how 
deregulation or restructuring of the industry will affect the market for our products.

Our business may become subject to future government regulation, which may impact our ability to market 
our products.

Our products will be subject to federal, local, and non-U.S. laws and regulations, including, for example, state and 
local ordinances relating to building codes, public safety, electrical and gas pipeline connections, hydrogen transportation 
and siting and related matters. Further, as products are introduced into the market commercially, governments may 
impose new regulations. We do not know the extent to which any such regulations may impact our ability to distribute, 
install and service our products. Any regulation of our products, whether at the federal, state, local or foreign level, 
including any regulations relating to installation and servicing of our products, may increase our costs and the price of 
our products.

Utility companies could place barriers on our entry into the marketplace where customers depend on traditional 
grid supplied energy.

Utility  companies  often  charge  fees  to  industrial  companies  for  disconnecting  from  the  grid,  for  using  less 
electricity or for having the capacity to use power from the grid for back-up purposes and may charge similar fees to 
residential customers in the future. The imposition of such fees could increase the cost to grid-connected customers of 
using our products and could make our products less desirable, thereby harming our revenue and profitability.

Alternatives to our technology or improvements to traditional energy technologies could make our products less 
attractive or render them obsolete.

Our products are among a number of alternative energy products being developed. A significant amount of public 
and private funding is currently directed toward development of micro turbines, solar power, wind power, advanced 
batteries  and  generator  sets,  fast  charged  technologies  and  other  types  of  fuel  cell  technologies.  Improvements  are 
also being made to the existing electric transmission system and battery based systems. Technological advances in 
alternative energy products, improvements in the electric power grid, battery systems or other fuel cell technologies 
may make our products less attractive or render them obsolete.

The  hydrocarbon  fuels  and  other  raw  materials  on  which  our  products  rely  may  not  be  readily  available  or 
available on a cost-effective basis.

Our products depend largely on the availability of natural gas, liquid propane and hydrogen gas. If these fuels are 
not readily available, or if their prices are such that energy produced by our products costs more than energy provided 
by other sources, our products could be less attractive to potential users.

In addition, platinum is a key material in our PEM fuel cells. Platinum is a scarce natural resource and we are 
dependent upon a sufficient supply of this commodity. Any shortages could adversely affect our ability to produce 
commercially viable fuel cell systems and significantly raise our cost of producing our fuel cell systems.

11

Our products use flammable fuels that are inherently dangerous substances.

Our fuel cell systems use natural gas, liquid propane and hydrogen gas in catalytic reactions, which produce less 
heat than a typical gas furnace. While our products do not use this fuel in a combustion process, natural gas, liquid 
propane and hydrogen gas are flammable fuels that could leak in a home or office and combust if ignited by another 
source.  Further,  while  we  are  not  aware  of  any  accidents  involving  our  products,  any  such  accidents  involving  our 
products or other products using similar flammable fuels could materially suppress demand for, or heighten regulatory 
scrutiny of, our products.

Product liability or defects could negatively impact our results of operations.

Any liability for damages resulting from malfunctions or design defects could be substantial and could materially 
adversely affect our business, financial condition, results of operations and prospects. In addition, a well-publicized 
actual or perceived problem could adversely affect the market’s perception of our products resulting in a decline in 
demand for our products and could divert the attention of our management, which may materially and adversely affect 
our business, financial condition, results of operations and prospects.

Future  acquisitions  may  be  difficult  to  integrate,  add  additional  burden  to  our  management  and  reduce  the 
percentage ownership of our stockholders.

As part of our business strategy we may engage in acquisitions that we believe will provide us with complementary 
technologies, products, channels, revenue streams, expertise and/or other valuable assets. However, we may not be able 
to identify suitable acquisition candidates. If we do identify suitable candidates, we may not be able to acquire them on 
commercially acceptable terms or at all. If we acquire another company, we may not be able to successfully integrate 
the  acquired  business  into  our  existing  business  in  a  timely  and  non-disruptive  manner.  We  may  have  to  devote  a 
significant amount of time and management and financial resources to do so. Even with this investment of management 
and financial resources, an acquisition may not produce the desired revenues, earnings or business synergies. In addition, 
an acquisition involving our stock may reduce the percentage ownership of our then current stockholders. If we fail to 
integrate the acquired business effectively or if key employees of that business leave, the anticipated benefits of the 
acquisition would be jeopardized. The time, capital, management and other resources spent on an acquisition that fails 
to meet our expectations could cause our business and financial condition to be materially and adversely affected. In 
addition, from an accounting perspective, acquisitions can lead to non-recurring charges and amortization or impairment 
of significant amounts of intangible assets that could adversely affect our results of operations.

We may not be able to protect important intellectual property and we could incur substantial costs defending 
against claims that our products infringe on the proprietary rights of others.

PEM fuel cell technology was first developed in the 1950s, and fuel processing technology has been practiced 
on  a  large  scale  in  the  petrochemical  industry  for  decades.  Accordingly,  we  do  not  believe  that  we  can  establish  a 
significant  proprietary  position  in  the  fundamental  component  technologies  in  these  areas.  However,  our  ability  to 
compete effectively will depend, in part, on our ability to protect our proprietary system-level technologies, systems 
designs and manufacturing processes. We rely on patents, trademarks, and other policies and procedures related to 
confidentiality to protect our intellectual property. However, some of our intellectual property is not covered by any 
patent  or  patent  application.  Moreover,  we  do  not  know  whether  any  of  our  pending  patent  applications  will  issue 
or, in the case of patents issued or to be issued, that the claims allowed are or will be sufficiently broad to protect 
our technology or processes. Even if all of our patent applications are issued and are sufficiently broad, our patents 
may be challenged or invalidated. We could incur substantial costs in prosecuting or defending patent infringement 
suits or otherwise protecting our intellectual property rights. While we have attempted to safeguard and maintain our 
proprietary rights, we do not know whether we have been or will be completely successful in doing so. Moreover, patent 
applications filed in foreign countries may be subject to laws, rules and procedures that are substantially different from 
those of the United States, and any resulting foreign patents may be difficult and expensive to enforce. In addition, 
we do not know whether the U.S. Patent & Trademark Office will grant federal registrations based on our pending 
trademark applications. Even if federal registrations are granted to us, our trademark rights may be challenged. It is 
also possible that our competitors or others will adopt trademarks similar to ours, thus impeding our ability to build 
brand identity and possibly leading to customer confusion. We could incur substantial costs in prosecuting or defending 
trademark infringement suits.

12

Further, our competitors may independently develop or patent technologies or processes that are substantially 
equivalent  or  superior  to  ours.  If  we  are  found  to  be  infringing  third  party  patents,  we  could  be  required  to  pay 
substantial royalties and/or damages, and we do not know whether we will be able to obtain licenses to use such patents 
on acceptable terms, if at all. Failure to obtain needed licenses could delay or prevent the development, manufacture or 
sale of our products, and could necessitate the expenditure of significant resources to develop or acquire non-infringing 
intellectual property.

Asserting, defending and maintaining our intellectual property rights could be difficult and costly and failure 
to do so may diminish our ability to compete effectively and may harm our operating results. We may need to pursue 
lawsuits or legal action in the future to enforce our intellectual property rights, to protect our trade secrets and domain 
names, and to determine the validity and scope of the proprietary rights of others. If third parties prepare and file 
applications for trademarks used or registered by us, we may oppose those applications and be required to participate 
in proceedings to determine the priority of rights to the trademark. Similarly, competitors may have filed applications 
for patents, may have received patents and may obtain additional patents and proprietary rights relating to products or 
technology that block or compete with ours. We may have to participate in interference proceedings to determine the 
priority of invention and the right to a patent for the technology. Litigation and interference proceedings, even if they 
are successful, are expensive to pursue and time consuming, and we could use a substantial amount of our financial 
resources in either case.

We rely, in part, on contractual provisions to protect our trade secrets and proprietary knowledge.

Confidentiality agreements to which we are party may be breached, and we may not have adequate remedies 
for  any  breach.  Our  trade  secrets  may  also  be  known  without  breach  of  such  agreements  or  may  be  independently 
developed by competitors. Our inability to maintain the proprietary nature of our technology and processes could allow 
our competitors to limit or eliminate any competitive advantages we may have.

We may have difficulty managing change in our operations.

We continue to undergo rapid change in the scope and breadth of our operations as we advance the development and 
commercialization of our products. Such rapid change is likely to place a significant strain on our senior management 
team and other resources. We will be required to make significant investments in our engineering, logistics, financial 
and management information systems and to motivate and effectively manage our employees. Our business, prospects, 
results of operations and financial condition could be harmed if we encounter difficulties in effectively managing the 
budgeting, forecasting and other process control issues presented by such a rapid change.

We face risks associated with our plans to market, distribute and service our products internationally.

We intend to market, distribute and service our products internationally. We have limited experience developing 
and manufacturing our products to comply with the commercial and legal requirements of international markets. Our 
success in international markets will depend, in part, on our ability and that of our partners to secure relationships 
with foreign sub-distributors, and our ability to manufacture products that meet foreign regulatory and commercial 
requirements. Additionally, our planned international operations are subject to other inherent risks, including potential 
difficulties in enforcing contractual obligations and intellectual property rights in foreign countries and fluctuations 
in  currency  exchange  rates.  Also,  to  the  extent  our  operations  and  assets  are  located  in  foreign  countries,  they  are 
potentially subject to nationalization actions over which we will have no control.

Our international sales and operations may be adversely affected by changes in local government laws, regulations 
and policies.

Our  international  sales  and  operations  are  subject  to  risks  associated  with  changes  in  local  government  laws, 
regulations and policies, including those related to tariffs and trade barriers, investments, taxation, exchange controls, 
employment regulations, and repatriation of earnings. Our international sales and operations are also sensitive to changes 
in foreign national priorities, including government budgets, as well as to political and economic instability. International 
transactions may involve increased financial and legal risks due to differing legal systems and customs in foreign countries. 
For example, as a condition of sale or to the awarding of a contract, some international customers require us to agree to 
offset arrangements, which may include in-country purchases, manufacturing and financial support arrangements. The 
contract may provide for penalties in the event we fail to perform in accordance with the offset requirements. In addition, 

13

as  part  of  our  globalization  strategy,  we  have  invested  in  certain  countries  which  may  carry  high  levels  of  currency, 
political and economic risk. While these factors or the impact of these factors are difficult to predict, any one or more of 
them could adversely affect our business, financial condition or operating results.

Our government contracts could restrict our ability to effectively commercialize our technology.

Some of our technology has been developed under government funding by the United States and Canada, and by 
other countries. The United States and Canadian governments have a non-exclusive, royalty-free, irrevocable world-
wide license to practice or have practiced any of our technology developed under contracts funded by the respective 
government. In some cases, government agencies in the United States or Canada can require us to obtain or produce 
components  for  our  systems  from  sources  located  in  the  United  States  or  Canada,  respectively,  rather  than  foreign 
countries. Our contracts with government agencies are also subject to the risk of termination at the convenience of the 
contracting agency, potential disclosure of our confidential information to third parties and the exercise of “march-in” 
rights by the government. March-in rights refer to the right of the United States or Canadian governments or government 
agency to license to others any technology developed under contracts funded by the government if the contractor fails 
to continue to develop the technology. The implementation of restrictions on our sourcing of components or the exercise 
of march-in rights could harm our business, prospects, results of operations and financial condition. In addition, under 
the Freedom of Information Act, any documents that we have submitted to the government or to a contractor under 
a government funding arrangement are subject to public disclosure that could compromise our intellectual property 
rights unless such documents are exempted as trade secrets or as confidential information and treated accordingly by 
such government agencies.

Our future plans could be harmed if we are unable to attract or retain key personnel.

We have attracted a highly skilled management team and specialized workforce, including scientists, engineers, 
researchers, manufacturing, marketing and sales professionals. Our future success will depend, in part, on our ability 
to attract and retain qualified management and technical personnel. We do not know whether we will be successful in 
hiring or retaining qualified personnel. Our inability to hire qualified personnel on a timely basis, or the departure of 
key employees, could materially and adversely affect our development and commercialization plans and, therefore, our 
business, prospects, results of operations and financial condition.

OJSC (Third Generation Company of the Wholesale Electricity Market)(OGK-3) has substantial control over us 
and could limit your ability to influence the outcome of key transactions, including a change of control.

OGK-3 and its affiliates own approximately 35% of the outstanding shares of our common stock. As a result, these 
stockholders can significantly influence or control certain matters requiring approval by our stockholders, including 
the approval of mergers or other extraordinary transactions. The interests of these stockholders may differ from yours 
and  these  stockholders  may  vote  in  a  way  with  which  you  disagree  and  which  may  be  adverse  to  your  interests. 
This concentration of ownership may have the effect of delaying, preventing or deterring a change of control of our 
Company, could deprive our stockholders of an opportunity to receive a premium for their common stock as part of a 
sale of our Company and might ultimately affect the market price of our common stock.

If a substantial number of shares of the Company’s common stock become available for sale and are sold in a 
short period of time, the market price of our common stock could decline.

OGK-3  holds  44,626,939  shares  of  common  stock,  which  represent  in  aggregate  approximately  35%  of  the 
Company’s outstanding common stock. If OGK-3 or its affiliates sell substantial amounts of our common stock in the 
public market, the market price of our common stock could decrease significantly. The perception in the public market 
that OGK-3 might sell shares of common stock could also depress the trading price of our common stock. A decline 
in the price of shares of our common stock might impede our ability to raise capital through the issuance of additional 
shares of our common stock or other equity securities.

14

Provisions in our charter documents and Delaware law may prevent or delay an acquisition of us, which could 
decrease the value of our common stock.

Our certificate of incorporation, bylaws and Delaware law contain provisions that could make it harder for a third 

party to acquire us without the consent of our board of directors. These provisions include those that:

•	

•	
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authorize the issuance of up to 5,000,000 shares of preferred stock in one or more series without a stockholder 
vote;

limit stockholders’ ability to call special meetings;

establish advance notice requirements for nominations for election to our board of directors or for proposing 
matters that can be acted on by stockholders at stockholder meetings; and

provide for staggered terms for our directors.

•	
In  addition,  in  certain  circumstances,  Delaware  law  also  imposes  restrictions  on  mergers  and  other  business 

combinations between us and any holder of 15% or more of our outstanding common stock.

Our stock price has been and could remain volatile.

The market price of our common stock has historically experienced and may continue to experience significant 
volatility. In 2008 the market price of our common stock fluctuated from a high of $4.17 per share in the first quarter 
of  2008  to  a  low  of  $0.69  per  share  in  the  fourth  quarter  of  2008.  Our  progress  in  developing  and  commercializing 
our products, our quarterly operating results, announcements of new products by us or our competitors, our perceived 
prospects, changes in securities’ analysts’ recommendations or earnings’ estimates, changes in general conditions in the 
economy or the financial markets, adverse events related to our strategic relationships, significant sales of our common 
stock by existing stockholders, including one or more of our strategic partners, and other developments affecting us or 
our competitors could cause the market price of our common stock to fluctuate substantially. In addition, in recent years, 
the stock market has experienced significant price and volume fluctuations. This volatility has affected the market prices 
of securities issued by many companies for reasons unrelated to their operating performance and may adversely affect 
the price of our common stock. In addition, we may be subject to additional securities class action litigation as a result of 
volatility in the price of our common stock, which could result in substantial costs and diversion of management’s attention 
and resources and could harm our stock price, business, prospects, results of operations and financial condition.

Our failure to comply with NASDAQ’s listing standards could result in the delisting of our common stock by 
NASDAQ from the NASDAQ Global Market and severely limit the ability to sell our common stock.

Our  common  stock  is  currently  traded  on  the  NASDAQ  Global  Market.  Under  NASDAQ’s  listing  maintenance 
standards, if the closing bid price of our common stock is under $1.00 per share for 30 consecutive trading days, NASDAQ 
will notify us that we may be delisted from the NASDAQ Global Market. If the closing bid price of our common stock does 
not thereafter regain compliance for a minimum of 10 consecutive trading days during the 90 days following notification 
by NASDAQ, NASDAQ may delist our common stock from trading on the NASDAQ Global Market. There can be no 
assurance that our common stock will remain eligible for trading on the NASDAQ Global Market. In addition, if our 
common stock is delisted, our stockholders would not be able to sell our common stock on the NASDAQ Global Market, 
and their ability to sell any of our common stock would be severely, if not completely, limited.

On  October  17,  2008,  the  NASDAQ  Stock  Market,  citing  “almost  unprecedented  turmoil”  in  U.S.  and  world 
financial markets issued a release temporarily suspending through January 16, 2009 its continued listing requirements 
related to minimum bid price set forth in Marketplace Rule 4310(c)(4) and market value of shares set forth in Marketplace 
Rule 4310(c)(7). On December 19, 2008, the NASDAQ Stock Market extended the temporary suspension until April 20, 
2009. There can be no assurance that the temporary suspension of such rules will be extended beyond April 20, 2009. 
If the suspension of such rules is lifted, there can be no assurance that we will be able to maintain compliance with 
the listing requirements. On March 5, 2009, the per share price of our common stock closed at $0.71 on the NASDAQ 
Global Market. If we are not able to maintain compliance with such continuing listing requirements beginning April 
20, 2009 , our stock may be delisted from the NASDAQ Global Market, which could have a negative effect on the price 
of our common stock, as well as on our ability to raise additional funds.

15

If we do not realize the expected benefits from our restructuring plans, our business prospects may suffer and 
our operating results and financial condition would be adversely affected.

On June 10, 2008 and December 18, 2008, the Company adopted restructuring plans. If we are unable to realize 
the benefits from our restructuring plans, our business prospects may suffer and our operating results and financial 
condition would be adversely affected. Details of the Company’s restructuring plans are available in previously filed 
Form  8-K  reports  dated  June  10,  2008  and  December  18,  2008  as  filed  on  June  16,  2008  and  December  22,  2008, 
respectively.

Adverse changes in general economic conditions in the United States or any of the major countries in which we 
do business could adversely affect our operating results.

As a global company, we are subject to the risks arising from adverse changes in global economic conditions. For 
example, as a result of the recent financial crisis in the credit markets, softness in the housing markets, difficulties in the 
financial services sector and continuing economic uncertainties, the direction and relative strength of the U.S. economy 
has become increasingly uncertain. If economic growth in the United States and other countries continues to slow or 
recede, our current or potential customers may delay or reduce technology purchases. This could result in reductions in 
sales of our products, longer sales cycles, slower adoption of new technologies and increased price competition, which 
could materially and adversely affect our business, results of operations and financial condition.

ITEM 1B.  UNRESOLVED STAFF COMMENTS

We have received no written comments regarding our periodic or current reports from the staff of the Securities 

and Exchange Commission that were issued 180 days or more preceding the end of our 2008 fiscal year.

ITEM 2.  PROPERTIES

Our principal executive offices are located in Latham, New York. At our 36-acre campus, we own a 56,000 square 
foot research and development center, a 32,000 square foot office building and a 50,000 square foot manufacturing 
facility and believe that these facilities are sufficient to accommodate our anticipated production volumes for at least 
the next two years. Our principal executive office also leases a 25,000 square foot warehouse facility in New York.

In connection with the acquisitions of Cellex and General Hydrogen, we also lease two facilities in Richmond, 
British Columbia with combined square footage of approximately 70,200 square feet to accommodate office, prototyping, 
and research and development activities.

The Company also leases approximately 14,000 square feet of office and lab space in Holland, approximately 

9,000, 6,000 and 900 square feet of office space in Ohio, Tennessee and Washington D.C., respectively. 

ITEM 3.  LEGAL PROCEEDINGS

In May 2008, the Company filed a lawsuit against UBS Financial Services Inc. and UBS AG in the United States 
District Court, Northern District of New York, the financial advisor that placed the Company in certain auction rate debt 
securities held in the Company’s investment portfolio. The lawsuit seeks a return of the $62.8 million of Company funds 
UBS invested in auction rate debt securities in contravention to the Company’s investment policy, among other damages.

On December 15, 2008, Plug Power Inc. (Plug or the Company) accepted an offer by UBS AG (UBS) of certain 
rights to cause UBS to purchase, at a future date, auction rate debt securities owned by the Company. The repurchase 
rights  are  offered  in  connection  with  UBS’s  obligations  under  settlement  agreements  with  the  U.S.  Securities  and 
Exchange Commission and other federal and state regulatory authorities. The offering, the settlement agreements, and 
the respective rights and obligations of the parties, are described in a prospectus issued by UBS dated October 7, 2008, 
File No. 333-153882 (the Prospectus). As a result of accepting UBS’s offer, the Company can require UBS to repurchase 
at par value all of the auction rate debt securities held by the Company at any time during the period from June 30, 2010 
through July 2, 2012 (if the Company’s auction rate debt securities have not previously been sold by the Company or by 
UBS on its behalf), and pending litigation between the parties has been dismissed with prejudice.

In connection with the Prospectus offering, the Company also entered into a Credit Line Agreement with UBS 
Credit Corp. that provides the Company with a credit line of up to $62.875 million with the Company’s auction rate debt 
securities pledged as collateral. The Company has drawn down the full amount of the credit line. In accordance with the 
offering by UBS, the loan will be treated as a “no net cost loan” as defined in the Prospectus. The loan will bear interest 
at a rate equal to the average rate of interest paid to Plug Power on the pledged auction rate debt securities such that the 

16

net interest cost to Plug Power will be zero. Though the loan is payable on demand, if UBS Credit Corp. should exercise 
its right to demand repayment of any portion of the loan prior to the date the Company can exercise its repurchase 
rights, UBS and certain of its affiliates will arrange for alternative financing on terms and conditions substantially the 
same as those contained in the loan. If alternative financing cannot be established, then UBS or one of its affiliates will 
purchase the Company’s pledged auction rate debt securities at par. As a result, the loan and any alternative financing 
will not be payable by the Company prior to the time that the Company can require UBS to repurchase the pledged 
auction rate debt securities in full satisfaction of the outstanding amounts on the Line of Credit. Proceeds of sales of 
the Company’s auction rate debt securities will first be applied to repayment of the credit line with the balance, if any, 
to be maintained by the Company. UBS has previously provided investment management services for a portion of the 
Company’s investment portfolio.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

PART II

ITEM 5. 

 MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER 
MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

During the years ended December 31, 2008 and 2007, we issued 379,189 and 279,054 shares of our common stock 
in connection with matching contributions under our 401(k) Savings & Retirement Plan. The issuance of these shares 
is exempt from registration under Section 3(a)(2) of the Securities Act of 1933, as amended.

MARKET INFORMATION

Our common stock is traded on the NASDAQ Global Market under the symbol “PLUG.” As of March 2, 2009, 
there were approximately 2,806 record holders of our common stock. However, management believes that a significant 
number of shares are held by brokers under a “nominee name” and that the number of beneficial shareholders of our 
common stock exceeds 52,000. The following table sets forth high and low last reported sale prices for our common 
stock as reported by the NASDAQ Global Market for the periods indicated:

2008

1st Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2nd Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3rd Quarter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4th Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2007

1st Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2nd Quarter  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3rd Quarter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4th Quarter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sales prices

High

Low

$ 4.17
$ 3.58
$ 2.91
$ 1.55

$ 3.96
$ 3.49
$ 3.33
$ 4.39

$ 2.52
$ 2.32
$ 0.90
$ 0.69

$ 2.86
$2.90
$ 2.49
$ 2.97

DIVIDEND POLICY

We  have  never  declared  or  paid  cash  dividends  on  our  common  stock  and  do  not  anticipate  paying  cash 
dividends in the foreseeable future. Any future determination as to the payment of dividends will depend upon capital 
requirements and limitations imposed by our credit agreements, if any, and such other factors as our board of directors 
may consider.

17

FIVE-YEAR PERFORMANCE GRAPH

Below is a line graph comparing the percentage change in the cumulative total return on the Company’s common 
stock, based on the market price of the Company’s common stock, with the total return of companies included within 
the  NASDAQ  Market  Index  and  the  companies  included  within  the  Russell  300  Technology  Index  for  the  period 
commencing December 31, 2003 and ending December 31, 2008. The calculation of the cumulative total return assumes 
a $100 investment in the Company’s common stock, the NASDAQ Market Index and the Russell 300 Technology Index 
on December 31, 2003 and the reinvestment of all dividends.

$160

$140

$120

$100

$80

$60

$40

$20

$0

2003

2004

2005

2006

2007

2008

PLUG POWER Inc.

RUSSELL 300 TECHNOLOGY INDEX

NASDAQ MARKET INDEX

Index

PLUG POWER INC.  . . . . . . . . . . . . . . . . . . . . . . . . . .
RUSSELL 300 TECHNOLOGY INDEX  . . . . . . . . . .
NASDAQ MARKET INDEX  . . . . . . . . . . . . . . . . . . .

2003
100.00
100.00
100.00

2004
84.28
105.58
108.59

2005
70.76
111.90
110.08

2006
53.66
123.31
120.56

2007
54.48
145.69
132.39

2008
14.07
83.38
78.72

See also Part III Item 12 in this Annual Report on Form 10-K for additional detail related to security ownership 

and related stockholder matters, and for additional detail on equity compensation plan matters. 

18

ITEM 6.  SELECTED FINANCIAL DATA

The  following  tables  set  forth  selected  financial  data  and  other  operating  information  of  the  Company.  The 
selected statements of operations and balance sheet data for 2008, 2007, 2006, 2005, and 2004 as set forth below are 
derived from the audited consolidated financial statements of the Company. The information is only a summary and 
you should read it in conjunction with the Company’s audited consolidated financial statements and related notes and 
other financial information included herein and “Management’s Discussion and Analysis of Financial Condition and 
Results of Operations.”

Statements Of Operations:
Product and service revenue . . . . . . . . . . . . . . . . . .
Research and development contract revenue  . . . . .
Total revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of product and service revenues . . . . . . . . . . .
Cost of research and development contract 

revenues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In-process research and development . . . . . . . . . . .
Research and development expense  . . . . . . . . . . . .
Selling, general and administrative expenses . . . . .
Goodwill impairment charge. . . . . . . . . . . . . . . . . .
Amortization of intangible assets . . . . . . . . . . . . . .
Other income (expense), net  . . . . . . . . . . . . . . . . . .
Net loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss per share, basic and diluted. . . . . . . . . . . . . . .
Weighted average number of common shares 

2008

Years Ended December 31,
2006

2007

2005

(in thousands, except per share data)

$

4,667
13,234
17,901
11,442

$

3,082
13,189
16,271
9,399

21,505
—
34,987
28,333
45,843
2,225
4,734
$(121,700)
(1.36)
$

19,045
—
39,218
19,323
—
1,614
11,757
$ (60,571)
(0.69)
$

$

2,657
5,179
7,836
4,833

7,637
—
41,577
12,268
—
—
8,169
$ (50,310)
(0.58)
$

$

4,881
8,606
13,487
4,098

12,076
—
35,632
8,973
—
687
(3,764)
$ (51,743)
(0.66)
$

2004

$ 5,306
10,835
16,141
5,368

13,474
—
32,453
8,423
—
2,750
(412)
$ (46,739)
(0.64)
$

outstanding. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

89,383

87,342

86,100

78,463

73,126

Balance Sheet Data:
(at end of the period)
Unrestricted cash, cash equivalents, trading 

securities and available-for-sale securities  . . . .
Total assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Borrowings under line of credit  . . . . . . . . . . . . . . .
Current portion of long-term obligations  . . . . . . . .
Long-term obligations . . . . . . . . . . . . . . . . . . . . . . .
Stockholders’ equity  . . . . . . . . . . . . . . . . . . . . . . . .
Working capital . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 157,339
209,112
62,875
401
1,313
125,864
86,171

$ 165,701
268,392
—
1,384
4,580
248,900
163,906

$ 269,123
307,920
—
—
1,112
294,528
267,002

$ 97,563
139,784
—
527
4,659
124,955
95,511

$ 66,849
117,997
—
427
4,996
102,113
64,073

ITEM 7. 

 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND 
RESULTS OF OPERATIONS

The discussion contained in this Form 10-K contains “forward-looking statements,” within the meaning of Section 
27A of the Securities Act and Section 21E of the Exchange Act, that involve risks and uncertainties. Our actual results 
could  differ  materially  from  those  discussed  in  this  Form  10-K.  In  evaluating  these  statements,  you  should  review 
Part I, Item 1A: Risk Factors and our Consolidated Financial Statements and notes thereto included in Part II, Item 8: 
Financial Statements and Supplementary Data of this Form 10-K. 

19

OVERVIEW

Plug Power Inc. is a development stage enterprise involved in the design, development and manufacture of fuel 
cell  systems  for  material  handling  and  stationary  power  markets  worldwide.  The  Company  is  a  development  stage 
enterprise because substantially all of the Company’s resources and efforts are aimed at the discovery of new knowledge 
that could lead to significant improvement in fuel cell reliability, durability and affordability, and the establishment, 
expansion and stability of markets for the Company’s products. We are focused on proton exchange membrane, or PEM, 
fuel cell and fuel processing technologies and fuel cell/battery hybrid technologies, from which multiple products are 
available.

The Company continues to experience significant net outflows of cash from operations and devotes significant 
efforts towards financial planning in order to forecast future cash spending and the ability to continue product research 
and development activities. We continue to survey the market to determine the most solid path to profitability for Plug 
Power. Currently, the Company’s primary focus and resources are placed on our GenDrive solution for the material 
handling market. Fuel cell technology within the Company’s targeted market, material handling power, and secondary 
markets, remote prime, residential and backup power, is still early in the technology adoption life cycle.

We currently offer our hydrogen fueled GenDrive power unit for commercial sale to material handling (forklift) 
applications, with a focus on multi-shift high volume manufacturing and high throughput distribution sites. We have 
sold, on commercial terms, two product offerings to target customers including Wal-Mart, Bridgestone Firestone and 
Nestle Waters. Our sales to Central Grocers and Sysco Foods involve Greenfield conversion sites. Greenfield sites offer 
the potential for the greatest financial benefits to our customers by eliminating the need for customers to make capital 
investments in batteries and the associated chargers, storage and changing systems.

Additionally,  we  continue  to  develop  our  low-temperature  remote-prime,  and  high-temperature  residential 
GenSys  continuous  power  products.  Our  low-temperature  GenSys  unit  successfully  completed  a  field  trial  in  rural 
India in 2008. It is offered commercially to remote telecommunications providers whose sites are located where the 
grid is unreliable or non-existent. Our high-temperature GenSys unit will be tested by the U.S. Department of Energy 
and  National  Grid  during  field  trials  in  2009.  Learning  from  the  trial  will  help  determine  system  refinements  for 
incorporation into the next-generation system design.

In 2008, manufacturing and sales support was given to our GenCore product which provides back-up power to 
businesses  and  government  in  critical  infrastructure,  specifically  in  the  wireless  and  wireline  telecommunications 
market. We continue to work with certain established customers on future initiatives related to this product.

As an extension of our GenSys development work, we developed technology in support of the automotive fuel cell 
market under a series of agreements with Honda R&D Co Ltd. of Japan (Honda), a subsidiary of Honda Motor Co., Ltd. In 
2008 we continued our work with Honda, maintaining the phase 4 system at Honda’s facility in Torrance, California.

We  also  form  relationships  with  customers  and  enter  into  development  and  demonstration  programs  with 
government agencies and other energy providers.  Many of our initial sales of GenCore, GenDrive and GenSys are 
contract-specific arrangements containing multiple obligations that may include a combination of fuel cell systems, 
continued service, maintenance, a supply of hydrogen and other support. The multiple obligations within our contractual 
arrangements are not accounted for separately based on our limited commercial experience and lack of evidence of fair 
value for the separate elements. As a result, we defer recognition of product and service revenue and recognize revenue 
on a straight-line basis over the contractual terms as the continued service, maintenance and other support obligations 
expire, which are may be for periods of twelve (12) to thirty (30) months or in some cases as long as (8) eight years. See 
“Critical Accounting Policies and Estimates—Revenue Recognition.” Our customers have no special right of return, 
price protection allowances or other sales incentives. We do offer a discount from our manufacturer’s suggested retail 
price to resellers to allow for the mark-up of the reseller.

As we gain experience, including field experience relative to service and warranty of our initial products, the fair 
values for the multiple elements within our future contracts may become determinable and we may, in future periods, 
recognize product revenue upon delivery or installation of the product, or we may continue to defer recognition, based 
on  application  of  appropriate  guidance  within  EITF  00-21,  Accounting  for  Revenue  Arrangements  with  Multiple 
Deliverables, or changes in the manner in which we structure contractual agreements, including our agreements with 
distribution partners.

20

Our cash requirements depend on numerous factors, including completion of our product development activities, 
ability to commercialize our fuel cell systems, market acceptance of our systems and other factors. We expect to pursue 
the expansion of our operations through internal growth and strategic acquisitions. As of December 31, 2008, we had 
cash and cash equivalents of $80.8 million, trading securities of $52.7 million, available-for-sale securities of $23.8 
million and working capital of $86.2 million. See Liquidity and Capital Resources below.

During  the  year  ended  December  31,  2008,  cash  used  for  operating  activities  was  $56.6  million,  consisting 
primarily of a net loss of $121.7 million offset, in part, by non-cash expenses in the amount of $59.8 million, including 
$6.6 million for amortization and depreciation, $8.6 million for stock based compensation, $45.8 million for goodwill 
impairment, $10.2 million other than temporary impairment loss on available-for-sale securities, a $10.2 million gain 
on auction rate debt securities repurchase agreement, and a $1.2 million gain on termination of repayable government 
assistance. Cash provided by investing activities for the year ended December 31, 2008 was $65.7 million, consisting 
of $67.1 million of maturities, net of purchases, of available-for-sale securities, offset by $1.4 million used to purchase 
property,  plant  and  equipment.  Cash  provided  by  financing  activities  was  approximately  $60.2  million  consisting 
primarily of proceeds from borrowings under line of credit of $62.9 million.

We have financed our operations from inception through December 31, 2008 primarily from the sale of equity 
(including those related to stock-based compensation), which has provided cash in the amount of $636.3 million since 
inception. Also since inception, cumulative net cash used in operating activities has been $454.3 million, and cash 
used in investing activities has been $154.9 million, including our purchase of property, plant and equipment of $38.3 
million, our net investments in available-for-sale securities in the amount of $86.5, and cash used for acquisitions of 
$19.3 million, net of cash received.

Subsequent to December 31, 2008, we issued 1,349,772 shares of common stock for the achievement of scorecard 

objectives in 2008. 

RECENT DEVELOPMENTS

Goodwill Impairment

The Company performs its annual goodwill assessment under SFAS 142 at the date of its fiscal year end. As a 
result of this assessment, the Company determined that a goodwill impairment had occurred and recorded a non-cash 
goodwill impairment charge of $45.8 million. See Note 7 of the Notes to Consolidated Financial Statements. 

Credit Line Agreement and Auction Rate Security Repurchase Agreement

In December 2008, the Company entered into a Credit Line Agreement with a third-party lender with a maximum 
availability of $62.9 million. As of December 31, 2008, the Company has drawn down $62.9 million on this line of 
credit. The Company’s auction rate securities included in ”trading securities” on the consolidated balance sheet are 
pledged as collateral for the Credit Line Agreement. The fair value of the auction rate securities is $52.7 million at 
December 31, 2008. The Credit Line Agreement bears interest at a variable rate equal to the average rate of interest 
earned by the Company on the auction rate securities pledged as collateral for the Credit Line Agreement. The interest 
rate on the Credit Line Agreement was 2.418% at December 31, 2008.

The Credit Line Agreement is repayable on demand by the third-party lender. If the third-party lender exercises 
its right to demand repayment of the advances under the Credit Line Agreement prior to June 30, 2010 (the date upon 
which the Company can first exercise its rights under the Repurchase Agreement discussed below), the third-party 
lender is required to arrange alternative financing on terms substantially the same as the Credit Line Agreement or the 
third party lender must repurchase the auction rate securities pledged as collateral for the Credit Line Agreement at 
their par value, which is $62.9 million at December 31, 2008.

In December 2008, the Company has also entered into a Repurchase Agreement with the third-party lender such 
that  the  Company  may  require  the  third-party  lender  to  repurchase  the  auction  rate  securities  pledged  as  collateral 
for the Credit Line Agreement, at their par value, commencing June 30, 2010 and through July 2, 2012. At December 
31, 2008 the fair value of this item is $10.2 million and is recorded as gain on auction rate debt securities repurchase 
agreement in the consolidated statements of operations.

21

Restructuring

On June 10, 2008, the Company adopted a restructuring plan to become a market and sales driven organization. 
The Company has refocused on the GenDrive motive power product where there has been significant customer interest 
in fuel cell power units. As part of the restructuring, the Company has reduced its workforce, cut back discretionary 
spending,  and  deferred  non  strategic  projects.  As  a  result  of  the  reduced  workforce  and  contract  cancellation,  the 
Company  recorded  restructuring  charges  in  the  amount  of  $3,744,801  within  selling,  general  and  administrative 
expenses in the consolidated statement of operations for 2008. At December 31, 2008, $402,721 remains as accrued 
expenses on the consolidated balance sheet.

On  December  18,  2008,  the  Company  adopted  a  restructuring  plan  intended  to  focus  the  Company  on  revenue 
growth,  improve  organizational  efficiency  and  position  the  Company  for  long-term  profitability.  As  part  of  this  plan, 
the  Company  implemented  a  reduction  in  workforce  by  eliminating  90  positions  in  addition  to  terminating  purchase 
commitments and charging off inventory related to lapsed product lines. As a result, the Company recorded restructuring 
charges in the amount of $3,990,364 within selling, general and administrative expenses and $2,295,370 in cost of product 
and  service  revenue  in  the  consolidated  statement  of  operations  for  the  twelve  months  ended  December  31,  2008.  At 
December 31, 2008, $3,990,364 remains as accrued expenses on the consolidated balance sheets.

Class B Stock Conversion

On December 23, 2008, the Company announced the sale by Smart Hydrogen Inc. to OJSC (Third Generation 
Company  of  the  Wholesale  Electricity  Market)  (“OGK-3”)  of  all  395,000  shares  of  the  Company’s  Class  B  Capital 
Stock as well as 5,126,939 shares of the Company’s common stock, the automatic conversion of the Company’s Class B 
Capital Stock into 39,500,000 shares of common stock, and the termination of all the rights and obligations attached 
to the Class B Capital Stock. The rights and obligations attached to the Class B Capital Stock that terminated include 
but are not limited to the right to appoint directors, veto rights and voting support obligations under the Investor Rights 
Agreement dated as of June 29, 2006, as amended (the “Investor Rights Agreement”). OGK-3 has executed a joinder 
agreement to the Investor Rights Agreement and is prohibited from transferring its shares of the Company’s Common 
Stock to a competitor of the Company. OGK-3 is also bound by the same standstill provisions that applied to Smart 
Hydrogen, as set forth in the Investor Rights Agreement. This transfer and conversion triggered a change of control 
pursuant  to  Section  17  of  our  1999  Stock  Option  and  Incentive  Plan;  and,  therefore,  each  outstanding  stock  option 
automatically  became  fully  exercisable  and  conditions  and  restrictions  on  each  outstanding  restricted  stock  award, 
deferred stock award and performance share award that relates solely to the passage of time and continued employment 
were removed. 

RESULTS OF OPERATIONS

Product and service revenue

We defer recognition of product and service revenue at the time of shipment and recognize revenue as the continued 

service, maintenance and other support obligations expire.

Many  of  our  initial  sales  of  product  contain  multiple  obligations  that  may  include  a  combination  of  fuel  cell 
systems, continued service, maintenance, fueling and other support. While contract terms generally require payment 
shortly after shipment or delivery and installation of the fuel cell system and are not contingent on the achievement of 
specific milestones or other substantive performance, the multiple obligations within our contractual arrangements are 
generally not accounted for separately based on our limited experience and lack of evidence of fair value of the different 
components. As a result, we defer recognition of product and service revenue and recognize revenue on a straight-line 
basis as the continued service, maintenance and other support obligations expire, which are generally for periods of 
twelve to thirty months, or in some cases as long as eight years. In the case of our limited consignment sales, we do 
not begin recognizing revenue on a deferred basis until the customer has accepted the product, at which time the risks 
and rewards of ownership have transferred, the price is fixed and we have a reasonable expectation of collecting upon 
billing. See “Critical Accounting Policies and Estimates—Revenue Recognition.”

Product and service revenue for the year ended December 31, 2008 increased $1.6 million, or 51%, to $4.7 million 
from $3.1 million for the year ended December 31, 2008. The increase is related to increased system shipments and the 
revenue recognized on those shipments as well as an increase in non-deferred revenue. The non-deferred revenue represents 
revenue associated with replacement parts or services not covered by service agreements or other similar types of sales 
where the Company has no continuing obligation after the parts are shipped or delivered or after services are rendered. 

22

In the product and service revenue category, during the year ended December 31, 2008, we shipped 273 fuel cell 
systems compared to 204 fuel cell systems during the year ended December 31, 2007. In the year ended December 
31, 2008, we recognized $2.3 million of revenue for products shipped or delivered or services rendered in the year 
ended December 31, 2008, which includes $1.1 million of non-deferred revenue as compared to $1.1 million of revenue 
recognized in the year ended December 31, 2007 for products shipped or delivered or services rendered in the year 
ended December 31, 2007, which includes $365,000 of non-deferred revenue. Additionally, in the year ended December 
31, 2008 we recognized approximately $2.4 million of product and services revenue originally deferred at December 
31, 2007, whereas in the year ended December 31, 2007 we recognized $2.0 million of revenue originally deferred at 
December 31, 2006. 

Product and service revenue for the year ended December 31, 2007 increased $425,000 or 16% to $3.1 million 
from  $2.7  million  for  the  year  ended  December  31,  2006.  Approximately  $289,000  of  the  increase  is  related  to  the 
acquisitions of Cellex and General Hydrogen. The remaining amount of the increase is related to increased system 
shipments in 2007 and the revenue recognized on those shipments, partially offset by decreased revenue recognition for 
systems shipped or delivered prior to 2007. Additionally, we recognized $365,000 and $291,000 of non deferred revenue 
during the years ended December 31, 2007 and 2006, respectively. This revenue represents revenue associated with 
replacement parts or services not covered by service agreements or other similar types of sales where the Company has 
no continuing obligation after the parts are shipped or services rendered.

In the product and service revenue category, during 2007 the Company shipped 204 fuel cell systems compared 
to 109 fuel cell systems during 2006. In 2007, we recognized $1.1 million of revenue for products shipped or services 
rendered in 2007 compared to $800,000 of revenue recognized in 2006 for products shipped or services rendered in 
2006.  Additionally,  in  2007  we  recognized  approximately  $2.0  million  of  product  and  services  revenue  originally 
deferred  at  December  31,  2006  whereas  in  2006  we  also  recognized  $1.9  million  of  revenue  originally  deferred  at 
December 31, 2005.

Research and development contract revenue

Research  and  development  contract  revenue  primarily  relates  to  cost  reimbursement  research  and  development 
contracts associated with the development of PEM fuel cell technology. We generally share in the cost of these programs 
with  our  cost-sharing  percentages  generally  ranging  from  22%  to  78%  of  total  project  costs.  Revenue  from  time  and 
material contracts is recognized on the basis of hours expended plus other reimbursable contract costs incurred during the 
period. Revenue from fixed fee contracts is recognized on the basis of percentage of completion. We expect to continue 
certain research and development contract work that is directly related to our current product development efforts.

Research and development contract revenue for the years ended December 31, 2008 was $13.2 million compared 
to $13.2 million in 2007. The acquisitions in 2007 increased research and development contract revenue $2.2 million 
as a result of twelve full months of operations in 2008 versus 2007, offset by a decrease of $2.2 million related to a 
completion of contracts from prior years. In the research and development contract revenue category, during the twelve 
months ended December 31, 2008 we shipped 5 GenSys fuel cell systems and 5 GenDrive fuel cell systems. 

Research and development contract revenue for the year ended December 31, 2007 increased to $13.2 million 
from $5.2 million in 2006. The acquisitions of Cellex and General Hydrogen accounted for approximately $1.2 million 
of  the  increase.  Of  the  remaining  $6.8  million  increase,  approximately  $2.2  million  resulted  from  additional  U.S. 
Department of Energy (DOE) contracts awarded in 2007; $3.5 million resulted from 4 additional contracts received 
from  the  U.S.  Department  of  Defense  (DOD)  in  2007;  and  revenue  from  new  contracts  with  NASA,  the  European 
Union, and Montana State University contributed approximately $1.8 million in 2007. These increases were partially 
offset by decreases resulting from completion of activities under other government contracts in 2006.

Cost of product and service revenue

Cost of product and service revenue includes the direct material cost incurred in the manufacture of the products 
we sell as well as the labor and material costs incurred for product maintenance, replacement parts and service under 
our contractual obligations. 

Cost of product and service revenue for the year ended December 31, 2008 increased $2.0 million to $11.4 million 
compared to $9.4 million in 2007. The increase was related to $2.3 in inventory write-offs associated with the corporate 
restructuring plan announced in December, 2008, coupled with higher cost of product and service revenues recorded 

23

due to an increased in shipments in 2008. This was partially offset by one-time charges of $2.0 million for certain 
future expected service and warranty costs for existing units in the field recorded in the second quarter of 2007. Also 
contributing to the increase was an increase in servicing costs of the larger installed base. 

Cost of product and service revenue for the year ended December 31, 2007 increased $4.6 million to $9.4 million 
compared to $4.8 million in 2006. Approximately $713,000 of the increase is related to the acquisitions of Cellex and 
General Hydrogen. The remaining increase of $3.9 million primarily related to a $2.0 million charge for certain future 
expected service and warranty costs for existing fuel cell units in the field. Also contributing to the increase was an 
increase in shipments and servicing costs of the larger installed base.

Cost of research and development contract revenue

Cost  of  research  and  development  contract  revenue  includes  costs  associated  with  research  and  development 
contracts including: cash and non-cash compensation and benefits for engineering and related support staff, fees paid to 
outside suppliers for subcontracted components and services, fees paid to consultants for services provided, materials 
and supplies used and other directly allocable general overhead costs allocated to specific research and development 
contracts.

Cost of research and development contract revenue for the year ended December 31, 2008 increased $2.5 million 
to $21.5 million from $19.0 million in 2007. This increase is primarily related to a higher percentage of cost sharing on 
research and development contracts in 2008.

Cost of research and development contract revenue for the year ended December 31, 2007 increased $11.4 to $19.0 
million  from  $7.6  million  in  2006.  The  acquisitions  of  Cellex  and  General  Hydrogen  contributed  approximately  $1.3 
million of this increase. The remainder of the increase, about $10.1 million, was associated with the additional effort 
applied to funded research and development projects commensurate with the additional revenue mentioned above.

Research and development expense

Research and development expense includes: materials to build development and prototype units, cash and non-
cash  compensation  and  benefits  for  the  engineering  and  related  staff,  expenses  for  contract  engineers,  fees  paid  to 
outside suppliers for subcontracted components and services, fees paid to consultants for services provided, materials 
and supplies consumed, facility related costs such as computer and network services, and other general overhead costs 
associated with our research and development activities.

Research and development expense decreased to $35.0 million for the year ended December 31, 2008 from $39.2 
million in 2007. This decrease was a direct result of the corporate restructuring plans announced in June and December 
of 2008, which included a reduced workforce and a reduction in non-strategic research and development projects. This 
decrease was largely offset by an increase of $2.0 million, primarily due to a full twelve month period of expense in 
2008 related to the acquisition of Cellex and General Hydrogen, versus a partial twelve month period in 2007.

Research and development expense decreased to $39.2 million for the year ended December 31, 2007 from $41.6 
million in 2006. The acquisitions of Cellex and General Hydrogen contributed $6.4 million of additional research and 
development expense which was more than offset by a reduction of nearly $8.8 million related to the activities of the 
pre-acquisition business. This reduction in expense is primarily related to the Company’s ability to receive increased 
third party funding to perform certain activities necessary to advance our understanding of various types of fuel cell 
systems consistent with our long-term goal of developing systems and applications. As a result of the receipt of funding 
for certain research and development programs, the related costs associated with these projects is included in cost of 
contract research and development revenue as described above.

Selling, general and administrative expenses

Selling,  general  and  administrative  expenses  includes  cash  and  non-cash  compensation,  benefits  and  related 
costs in support of our general corporate functions, including general management, finance and accounting, human 
resources, selling and marketing, information technology and legal services.

Selling, general and administrative expenses for the year ended December 31, 2008 increased from the prior year 
$9.0 million to $28.3 million. Approximately $7.0 million of the increase is related to the corporate restructuring plans 
announced in June and December of 2008. The remainder of the increase is a direct result of a full twelve month period of 
expense in 2008 related to the acquisition of Cellex and General Hydrogen, versus a partial twelve month period in 2007.

24

Selling, general and administrative expenses for the year ended December 31, 2007 increased from the prior year 
$7.0 million to $19.3 million. Approximately $4.5 million of the increase is related to the acquisition of Cellex and 
General Hydrogen. The remaining $2.5 million of the increase is primarily related to the increased size of our sales 
group in an effort to increase market adoption of our fuel cell technology.

Goodwill Impairment

The Company performs its annual goodwill assessment under SFAS 142 at the date of its fiscal year end. As a result 
of this assessment, the Company determined that a goodwill impairment has occurred and recorded an impairment charge 
of $45.8 million. See Note 7 (Goodwill and Other Intangible Assets) of the Notes to Consolidated Financial Statements. 

Amortization of intangible assets

Amortization of intangible assets represents the amortization associated with the Company’s acquired identifiable 
intangible assets from Cellex and General Hydrogen, including acquired technology and customer relationships, which 
are being amortized over eight years. 

Amortization of intangible assets increased to $2.2 million for the year ended December 31, 2008, compared to 
$1.6 million for the year ended December 31, 2007. The increase is related to a full twelve month period of amortization 
of intangible assets in 2008 as compared to a partial twelve month period in 2007. 

Interest and other income and net realized gains from available-for-sale securities

Interest and other income and net realized gains from available-for-sale securities consists primarily of interest 
earned on our cash, cash equivalents, available-for-sale and trading securities, other income, and the net realized gain 
from the sale of available-for-sale securities. Interest income on trading securities from the date of the transfer of the 
auction rate debt securities to trading in December 2008 was not significant.

Interest  and  other  income  and  net  realized  gains  from  available-for-sale  securities  decreased  $7.2  million  to 
$5.1 million for the year ended December 31, 2008 from $12.3 million for the year ended December 31, 2007. This 
decrease is primarily related to lower cash balances coupled with lower yields on our investments due to a declining 
rate environment. In addition, the yield on auction rate debt securities declined significantly in 2008 as compared to 
2007 due primarily to the impact of failed auctions related to these securities which began in February 2008. This was 
partially offset by a $1.2 million gain relating to the termination of Technology Partnerships Canada (TPC) agreements 
with Cellex and General Hydrogen. Total net realized gains/losses from the sale of available-for-sale securities was a 
gain of $389,000 and $118,000 and 68,000 for the years ended December 31, 2008, 2007 and 2006 respectively.

Interest income and net realized gains/losses from the sale of available-for-sale securities increased to $12.3 million 
for  the  year  ended  December  31,  2007  from  $8.3  million  for  the  year  ended  December  31,  2006.  Nearly  all  of  the 
increase of $4.0 million was the result of higher yields on our cash and available-for-sale securities in 2007. Total net 
realized gains from the sale of available-for-sale securities was a gain of $118,000 and $68,000 for the years ended 
December 31, 2007 and 2006, respectively.

Gain on auction rate debt securities repurchase agreement

In December 2008, the Company entered into a Repurchase Agreement with the third-party lender such that the 
Company may require the third-party lender to repurchase the auction rate debt securities pledged as collateral for the 
Credit Line Agreement, at their par value, from June 30, 2010 through July 2, 2012. The Company has elected to record 
this item at its fair value in accordance with SFAS No. 159, The Fair Value Option for Assets and Financial Liabilities. 
At December 31, 2008, the fair value of this item is $10.2 million and is recorded as gain on auction rate debt securities 
repurchase agreement in the consolidated statements of operations.

Impairment loss on available-for-sale securities

Due to the liquidity issues in the credit and capital markets, the market for auction rate debt securities began 
experiencing auction failures in February 2008 and there have been no successful auctions for the securities held in our 
portfolio since the failures began. Given the lack of liquidity in the market for auction rate debt securities, the Company 
concluded  that  the  estimated  fair  value  of  these  securities  has  become  lower  than  the  cost  of  these  securities,  and, 
based on an analysis of the other than temporary impairment factors, management has determined that this difference 

25

represents  a  decline  in  fair  value  that  is  other  than  temporary.  Accordingly,  the  Company  recorded  an  other  than 
temporary impairment charge of $10.2 million and $0 million, respectively in the twelve months ended December 31, 
2008 and 2007 in the consolidated statements of operations. 

As a result of the Repurchase Agreement entered into with a third party lender in December 2008, the Company 
reclassified the auction rate debt securities from available-for-sale securities to trading securities. The change in the fair value 
of these trading securities from the date of their transfer into trading through December 31, 2008 was not significant.

Interest and other expense

Interest and other expense consists of interest on repayable government assistance amounts related to the activities of 
Cellex and General Hydrogen, interest related to the Line of Credit Agreement, and foreign currency exchange gain/(loss).

Interest  and  other  expense  for  the  year  ended  December  31,  2008  was  approximately  $401,000,  compared  to 
$580,000 for the year ended December 31, 2007. The decrease is related to foreign currency exchange losses from our 
Canadian operations. Interest expense related to the Credit Line Agreement entered into in December 2008 was not 
significant. 

Interest and other expenses increased approximately $409,000 to $580,000 for the year ended December 31, 2007, 
compared to $171,000 for the year ended December 31, 2006. This increase is primarily related to foreign currency 
exchange losses from our newly acquired Canadian operations.

Income taxes

We  did  not  report  a  benefit  for  federal  and  state  income  taxes  in  the  consolidated  financial  statements  as  the 
deferred tax asset generated from our net operating loss has been offset by a full valuation allowance because it is more 
likely than not that the tax benefits of the net operating loss carry forward will not be realized.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

The preparation of financial statements in conformity with generally accepted accounting principles and related 

disclosures requires management to make estimates and assumptions that affect:

the amounts reported for assets and liabilities;

the amounts reported for revenues and expenses during the reporting period.

the disclosure of contingent assets and liabilities at the date of the financial statements; and

•	
•	
•	
Specifically, we must use estimates in determining  the  economic useful lives of assets, including identifiable 
intangible assets, and various other recorded or disclosed amounts. Therefore, our consolidated financial statements 
and related disclosures are necessarily affected by these estimates. We evaluate these estimates on an ongoing basis, 
utilizing historical experience and other methods considered reasonable in the particular circumstances. Nevertheless, 
actual results may differ significantly from these estimates. To the extent that actual outcomes differ from estimates, 
or additional facts and circumstances cause management to revise estimates, our financial position as reflected in our 
consolidated financial statements will be affected. Any effects on business, financial position or results of operations 
resulting from revisions to these estimates are recorded in the period in which the facts that give rise to the revision 
become known.

We believe that the following are our most critical accounting policies affected by the estimates and assumptions 

the Company must make in the preparation of its consolidated financial statements and related disclosures:

Revenue recognition

We  are  a  development  stage  enterprise  currently  performing  field  testing  and  selling  and  marketing  of  our 
products to a limited number of customers, including distribution center operators, manufacturing facilities, telecom, 
utilities, and government entities. Our fuel cell systems are designed to replace incumbent electric power technologies 
in material handling equipment, serve as complementary or replacement power in prime power applications and serve 
as complementary quality power sources in back-up applications. Our current product offerings are intended to offer 
complementary, quality power while demonstrating the market value of fuel cells as a preferred form of alternative 
distributed  power  generation.  Subsequent  enhancements  to  our  initial  product  are  expected  to  expand  the  market 

26

opportunity  for  fuel  cells  by  lowering  the  installed  cost,  decreasing  operating  and  maintenance  costs,  increasing 
efficiency,  improving  reliability,  and  adding  features  such  as  grid  independence  and  co-generation  as  well  as  UPS 
applications.

We apply the guidance within SEC Staff Accounting Bulletin No. 104, Revenue Recognition in Financial Statements 
(SAB 104), to our initial sales contracts to determine when to properly recognize revenue. Many of our initial sales of 
product contain multiple obligations that may include a combination of fuel cell systems, continued service, maintenance, 
a supply of hydrogen and other support. While contract terms generally stipulate that title and risk of ownership pass 
and require payment upon shipment or delivery of the fuel cell system, or acceptance in the case of certain consignment 
sales, and also stipulate that payment is not contingent on the achievement of specific milestones or other substantive 
performance, the multiple obligations within our contractual arrangements are generally not accounted for separately 
based on our limited experience and lack of evidence of fair value of the different components. As a result, we defer 
recognition of product and service revenue and recognize revenue on a straight-line basis over the stated contractual 
term, as the continued service, maintenance and other support obligations expire, which may be for periods of twelve 
to thirty months or in some cases as long as eight years, or over the anticipated service period if expected to exceed 
the contractual service period. In the case of our limited consignment sales, we do not begin recognizing revenue on 
a deferred basis until the customer has accepted the product, at which time the risks and rewards of ownership have 
transferred, the price is fixed and we have a reasonable expectation of collection upon billing. The costs associated with 
the product, service and other obligations are generally expensed as they are incurred.

As we gain experience, including field experience relative to service and warranty obligations based on the sales 
of our initial products, the fair values for the multiple elements within our future contracts may become determinable 
and we may, in future periods, recognize revenue upon shipment or delivery of the product or we may continue to defer 
recognition, based on application of appropriate guidance within EITF 00-21, Accounting for Revenue Arrangements 
with Multiple Deliverables, or changes in  the  manner in  which we structure  contractual agreements,  including our 
agreements with distribution partners.

Additionally, our research and development contract revenue primarily relates to cost reimbursement research and 
development contracts associated with the development of PEM fuel cell technology. The Company generally shares 
in the cost of these programs with our cost-sharing percentages generally ranging from 22% and 78% of total project 
costs. Revenue from time and material contracts is recognized on the basis of hours expended plus other reimbursable 
contract costs incurred during the period. Revenue from fixed fee contracts is recognized on the basis of percentage 
of completion. 

Valuation of long-lived assets

We value long-lived assets at their fair value at the date of acquisition. We utilize third-party valuation experts 
in our assessments of the fair values of acquired long-lived assets and allocate purchase price to the acquired assets 
and liabilities assumed accordingly. We assess the impairment of long-lived assets, including identifiable intangible 
assets, and goodwill, if any, whenever events or changes in circumstances indicate that the carrying value may not be 
recoverable and, for goodwill, at least annually. Factors we consider important that could trigger an impairment review 
include, but are not limited to, the following:

significant negative industry or economic trends;

significant decline in our stock price for a sustained period; and

significant underperformance relative to expected historical or projected future operating results;

significant changes in the manner of our use of the acquired assets or the strategy for our overall business;

•	
•	
•	
•	
•	
When  we  determine  that  the  carrying  value  of  long-lived  assets,  including  identifiable  intangible  assets,  and 
goodwill may not be recoverable based upon the existence of one or more of the above indicators of impairment, we 
would measure any impairment based upon the provisions of Statement of Financial Accounting Standards, or SFAS, 
No. 142, Goodwill and Other Intangible Assets and SFAS No. 144, Accounting for the Impairment or Disposal of Long-
Lived Assets, as appropriate. Any resulting impairment loss could have a material adverse impact on our financial 
condition and results of operations.

our market capitalization relative to net book value.

27

Goodwill  impairment  testing  is  performed  at  the  segment  (or  reporting  unit)  level.  Currently,  the  Company’s 
goodwill is evaluated at the entity level as there is only one reporting unit. Goodwill is assigned to reporting units 
at the date the goodwill is initially recorded. Once goodwill has been assigned to reporting units, it no longer retains 
association with a particular acquisition, and all of the activities within a reporting unit, whether acquired or organically 
grown, are available to support the value of the goodwill. 

The Company performs its annual goodwill impairment assessment under SFAS 142 at the date of its fiscal year 
end. Our goodwill impairment test was based on a set of assumptions regarding discounted future cash flows, which 
represent the Company’s best estimate of future performance at this time, as well as consideration of the Company’s 
market capitalization. As a result of this assessment, the Company has determined that a goodwill impairment has 
occurred and has recorded a non-cash impairment charge of $45.8 million in its consolidated statement of operations 
for 2008.

The goodwill impairment analysis is dependent on many variables used to determine fair value of the Company 
overall and the fair value of the Company’s assets and liabilities. Please see Note 7 (Goodwill and Other Intangible 
Assets)  of  the  Notes  to  Consolidated  Financial  Statements  for  a  description  of  the  valuation  methods  and  related 
estimates and assumptions used in our impairment testing. The complexity of the analysis does not permit a simplistic 
determination of the impact of changes in assumptions. 

Accounting for income taxes

Significant management judgment is required in determining our provision for income taxes, our deferred tax 
assets and liabilities and any valuation allowance recorded against our net deferred tax assets. As of December 31, 2008, 
we have recorded a valuation allowance due to uncertainties related to our ability to utilize the net deferred tax assets, 
primarily consisting of net operating losses and credits which may be carried forward, before they expire. In the event 
that actual results differ from these estimates or we adjust these estimates in future periods, we may need to adjust 
the recorded valuation allowance, which could materially impact our financial position and results of operations. At 
December 31, 2008 and 2007, our net deferred tax assets have been offset in full by a valuation allowance. As a result, 
the net provision for income taxes is zero for the years ended December 31, 2008 and 2007. The Company adopted 
Financial Accounting Standards Board (FASB) Interpretation No. 48, Accounting for Uncertainty in Income Taxes-an 
interpretation of FASB Statement No. 109 (FIN 48), which clarifies the accounting for uncertainty in tax positions on 
January 1, 2007. No adjustment of opening balances was required and the adoption of this Interpretation did not have 
a material impact on the Company’s consolidated financial statements.

Stock Based Compensation

We recognize stock-based compensation expense associated with the vesting of share based instruments in the 
consolidated statements of operations. Determining the amount of stock-based compensation to be recorded requires 
us to develop estimates to be used in calculating the grant-date fair value of stock options. We calculate the grant-date 
fair values using the Black-Scholes valuation model. The Black-Scholes model requires us to make estimates of the 
following assumptions:

Expected volatility—The estimated stock price volatility was derived based upon a blend of implied volatility 
(i.e. management’s expectation of volatility) and the Company’s actual historic stock prices over the expected life of the 
options, which represents the Company’s best estimate of expected volatility.

Expected option life—The Company’s estimate of an expected option life was calculated in accordance with the 
Staff Accounting Bulletin No. 110 (SAB 110) simplified method for calculating the expected term assumption. The 
simplified method is a calculation based on the contractual life of the associated options.

Risk-free interest rate—We use the yield on zero-coupon U.S. Treasury securities for a period that is commensurate 

with the expected life assumption as the risk-free interest rate.

The amount of stock-based compensation recognized during a period is based on the value of the portion of the 
awards that are ultimately expected to vest. SFAS 123(R) requires forfeitures to be estimated at the time of grant and 
revised, if necessary, in subsequent periods if actual forfeitures differ from those estimates. The term “forfeitures” is 
distinct from “cancellations” or “expirations” and represents only the unvested portion of the surrendered option. We 
review historical forfeiture data and determine the appropriate forfeiture rate based on that data. We re-evaluate this 
analysis periodically and adjust the forfeiture rate as necessary. Ultimately, we will recognize the actual expense over 
the vesting period only for the shares that vest.

28

Auction rate securities and auction rate debt securities repurchase agreement

We  value  our  auction  rate  debt  securities  and  auction  rate  debt  securities  repurchase  agreement  based  upon 
factors specific to these securities, including duration, tax status (taxable or tax-exempt), credit quality, the existence 
of insurance wraps, and the composition of the underlying student loans (Federal Family Education Loan Program or 
private loans). Assumptions are made about future cash flows based upon interest rate formulas as described in Note 4, 
Fair Value Measurements. Also, our valuation includes estimates of market data including yields or spreads of similar 
trading  instruments,  when  available,  or  assumptions  believed  to  be  reasonable.  Illiquid  credit  markets  and  volatile 
equity markets have combined to increase the uncertainty inherent in our estimates and assumptions. As future events 
cannot be determined with precision, actual results could differ significantly from our estimates.

RECENT ACCOUNTING PRONOUNCEMENTS 

A  discussion  of  recently  adopted  and  new  accounting  pronouncements  is  included  in  Note  2  (Summary  of 
Significant Accounting Policies) of the Consolidated Financial Statements in Part II, Item 8 of this Annual Report on 
Form 10-K.

LIQUIDITY AND CAPITAL RESOURCES

Our cash requirements depend on numerous factors, including completion of our product development activities, our 
ability to commercialize our energy products, market acceptance of our systems and other factors. We expect to devote 
substantial capital resources to continue our development programs directed at commercializing our energy products for 
worldwide use, hiring and training our sales and service staff, developing and expanding our manufacturing capacity 
and continuing to expand our research and development activities. We expect to pursue the expansion of our operations 
through internal growth and strategic acquisitions and expect that such activities will be funded from existing cash, cash 
equivalents,  trading  securities,  available-for-sale  securities,  and  the  issuance  of  additional  equity  or  debt  securities  or 
additional borrowings subject to market and other conditions. The failure to raise the funds necessary to finance our future 
cash requirements or consummate future acquisitions could adversely affect our ability to pursue our strategy and could 
negatively affect our operations in future periods. We anticipate incurring substantial additional losses over at least the 
next several years and believe that our current cash, cash equivalents, trading securities and available-for-sale securities 
balances will provide sufficient liquidity to fund operations for at least the next twelve months.

Several key indicators of liquidity are summarized in the following table:

Years ended December 31,
2007

2006

2008

Cash and cash equivalents at end of period . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trading securities – auction rate debt securities  . . . . . . . . . . . . . . . . . . . . . . . . .
Available-for-sale securities at end of period . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Working capital at end of period  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net cash used in operating activities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase of property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—    

(in thousands)
  $ 80,845   $ 12,077   $ 26,900
    52,651    
—
    23,844     153,624     242,223
    86,171     163,906     267,002
    121,700     60,571    
50,310
    56,552     49,311     46,107
1,275

2,944    

1,419    

Included in trading securities and working capital at December 31, 2008 and in available-for-sale securities and 
working capital at December 31, 2007, respectively, is $52.7 million and $90.8 million of auction rate debt securities. 
The auction rate debt securities are secured by student loans which are generally guaranteed by the Federal government. 
These auction rate debt securities are structured to be tendered at par, at the investor’s option, at auctions occurring 
every 27-30 days. However, due to the liquidity issues in the credit and capital markets, the market for auction rate 
debt securities began experiencing auction failures in February 2008 and there have been no successful auctions for 
the securities held in our portfolio since the failures began. We continue to receive interest on these securities, subject 
to an interest rate cap formula for each security as periodically adjusted in accordance with the respective securities 
agreement. At December 31, 2008, the interest rates ranged from 1.55% to 3.43% on the auction rate debt securities as 
compared to the interest rate range at December 31, 2007 from 5.6% to 6.85%. See Note 8, Credit Line Agreement and 
Auction Rate Debt Securities Repurchase Agreement. 

29

 
 
 
 
 
   
The Company has pledged these securities as collateral to a third-party lender for a Credit Line Agreement (See 
Note 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase Agreement) entered into in December 
2008. Given the lack of liquidity in the market for auction rate debt securities, the estimated fair value of these auction 
rate debt securities have become lower than their cost and, based on an analysis of other than temporary impairment 
factors, management has determined, beginning in the first quarter of 2008, that this difference represents a decline in 
value that is other than temporary. Accordingly, the Company recorded an other than temporary impairment charge of 
$10.2 million for the year ended December 31, 2008 in the consolidated statements of operations. In December 2008, 
the Company entered into a Repurchase Agreement with a third-party lender such that the Company may require the 
third-party lender to repurchase the auction rate debt securities pledged as collateral for the Credit Line Agreement (See 
Note 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase Agreement) , at their par value, from June 
30, 2010 through July 2, 2012. The fair value of the Repurchase Agreement at its origination was $10.2 million and was 
recorded as income in the 2008 consolidated statement of operations.

We continue to monitor the market for auction rate debt securities and will be required to mark the securities to 
fair value which could negatively affect our financial condition, liquidity and reported operating results. We will also 
be monitoring and marking to fair value the auction rate debt securities repurchase agreement. The Company expects 
that the fair adjustments of the auction rate debt securities will generally be offset by the fair value adjustments of the 
auction rate debt securities repurchase agreement.

In May 2008, the Company filed a lawsuit against UBS Financial Services Inc. and UBS AG in the United States 
District Court, Northern District of New York, the financial advisor that placed the Company in certain auction rate 
debt securities held in the Company’s investment portfolio. The lawsuit seeks a return of the $62.8 million of Company 
funds UBS invested in auction rate debt securities in contravention to the Company’s investment policy, among other 
damages.

On December 15, 2008, Plug Power Inc. (Plug or the Company) accepted an offer by UBS AG (UBS) of certain 
rights to cause UBS to purchase, at a future date, auction rate debt securities owned by the Company. The repurchase 
rights  are  offered  in  connection  with  UBS’s  obligations  under  settlement  agreements  with  the  U.S.  Securities  and 
Exchange Commission and other federal and state regulatory authorities. The offering, the settlement agreements, and 
the respective rights and obligations of the parties, are described in a prospectus issued by UBS dated October 7, 2008, 
File No. 333-153882 (the Prospectus). As a result of accepting UBS’s offer, the Company can require UBS to repurchase 
at par value all of the auction rate debt securities held by the Company at any time during the period from June 30, 2010 
through July 2, 2012 (if the Company’s auction rate debt securities have not previously been sold by the Company or by 
UBS on its behalf), and pending litigation between the parties has been dismissed with prejudice.

In connection with the Prospectus offering, the Company also entered into a loan agreement with UBS Credit 
Corp.  that  provides  the  Company  with  a  credit  line  of  up  to  $62.875  million  with  the  Company’s  auction  rate  debt 
securities pledged as collateral. The Company has drawn down the full amount of the credit line. In accordance with 
the offering by UBS, the loan will be treated as a “no net cost loan” as defined in the Prospectus. The loan will bear 
interest at a rate equal to the average rate of interest paid to Plug Power on the pledged auction rate debt securities 
such that the net interest cost to Plug Power will be zero. Though the loan is payable on demand, if UBS Credit Corp. 
should exercise its right to demand repayment of any portion of the loan prior to the date the Company can exercise 
its repurchase rights, UBS and certain of its affiliates will arrange for alternative financing on terms and conditions 
substantially the same as those contained in the loan. If alternative financing cannot be established, then UBS or one 
of its affiliates will purchase the Company’s pledged auction rate debt securities at par. As a result, the loan and any 
alternative  financing  will  not  be  payable  by  the  Company  prior  to  the  time  that  the  Company  can  require  UBS  to 
repurchase the pledged auction rate debt securities. Proceeds of sales of the Company’s auction rate debt securities will 
first be applied to repayment of the credit line with the balance, if any, for the Company’s account. UBS has previously 
provided investment management services for a portion of the Company’s investment portfolio.

Our cash requirements depend on numerous factors, including completion of our product development activities, 
ability to commercialize our fuel cell systems, market acceptance of our systems and other factors. We expect to pursue 
the expansion of our operations through internal growth and strategic acquisitions. As of December 31, 2008, we had 
cash and cash equivalents of $80.8 million, trading securities of $52.7 million, available-for-sale securities of $23.8 
million and working capital of $86.2 million. 

During  the  year  ended  December  31,  2008,  cash  used  for  operating  activities  was  $56.6  million,  consisting 
primarily of a net loss of $121.7 million offset, in part, by non-cash expenses in the amount of $59.8 million, including 
$6.6 million for amortization and depreciation, $8.6 million for stock based compensation, $45.8 million for goodwill 

30

impairment  charge,  $10.2  million  other  than  temporary  impairment  loss  on  available-for-sale  securities,  a  $10.2 
million gain on auction rate debt securities repurchase agreement, and a $1.2 million gain on termination of repayable 
government assistance. Cash provided by investing activities for the year ended December 31, 2008 was $65.7 million, 
consisting of $67.1 million of maturities, net of purchases, of available-for-sale securities, offset by $1.4 million used 
to  purchase  property,  plant  and  equipment.  Cash  provided  by  financing  activities  was  approximately  $60.2  million 
consisting primarily of proceeds from borrowings under line of credit of $62.9 million.

We have financed our operations from inception through December 31, 2008 primarily from the sale of equity 
(including those related to stock-based compensation), which has provided cash in the amount of $636.3 million since 
inception. Also since inception, cumulative net cash used in operating activities has been $454.3 million, and cash 
used in investing activities has been $154.9 million, including our purchase of property, plant and equipment of $38.3 
million, our net investments in available-for-sale securities in the amount of $86.5, and cash used for acquisitions of 
$19.3 million, net of cash received.

 Other significant transactions impacting our liquidity and capital resources have been as follows:

Mergers & Acquisitions

On April 3, 2007, the Company completed the acquisition of all of the outstanding shares of Cellex, a development 
stage enterprise, for an aggregate purchase price, including acquisition costs, of $46.1 million. As part of this acquisition, 
we  acquired  technology  and  certain  other  assets  of  Cellex  as  noted  in  more  detail  in  Note  3  (Acquisitions)  of  the 
Notes  to  Consolidated  Financial  Statements.  The  entire  $10  million  balance  of  intangible  assets  has  been  assigned 
to acquired technology, which is being amortized over 8 years. The results of Cellex’s operations have been included 
in the consolidated financial statements since that date. Cellex, based in Richmond, British Columbia, develops and 
commercializes fuel cell solutions that replace the industrial lead acid battery system used today in powering electric 
lift truck fleets in large-scale distribution centers.

On May 4, 2007, the Company completed the acquisition of all of the outstanding shares of General Hydrogen, 
a  development  stage  enterprise,  for  an  aggregate  purchase  price  of  $12.4  million.  The  purchase  price  includes  the 
settlement of $3.0 million in senior secured loans previously made by the Company to General Hydrogen, as well as 
571,429 warrants granted to shareholders of General Hydrogen that were valued at $1.4 million. The warrants become 
exercisable  when  Plug  Power’s  Common  Stock  trades  at  a  volume  weighted  average  price  of  $7.00  or  more  for  10 
consecutive trading days. The warrants carry an exercise price of $.01 per share and expire four years from the date 
of issuance. As part of this acquisition, we acquired technology and customer relationships and certain other assets of 
General Hydrogen as noted in more detail in Note 3 (Acquisitions) of the Notes to Consolidated Financial Statements. 
Of the $6.9 million of intangible assets, $5.9 million has been assigned to acquired technology and $1.0 million has been 
assigned to customer relationships, both of which are being amortized over 8 years. The results of General Hydrogen’s 
operations have been included in the consolidated financial statements since May 4, 2007. General Hydrogen is located 
in Richmond, British Columbia, Canada within close proximity to Cellex.

By  acquiring  both  General  Hydrogen  and  Cellex,  leaders  in  their  industry,  the  Company  expects  to  realize 
significant technological and operational synergies while pursuing high-value applications in the material handling 
market. As a result of the acquisitions, the Company is expected to be a leading provider of PEM fuel cell power units 
for electric lift trucks and is targeting the estimated $1.5 billion industrial motive battery market. The acquisitions 
diversify the Company’s product portfolio and add new revenue streams from a potentially significant market.

During October 2007, Plug Power integrated the operations of both companies into one organization. Further, the 
Company anticipates that higher volume product manufacturing activities will be established in Plug Power’s Latham, 
N.Y. facility. The Company intends to leverage Plug Power’s existing commercial infrastructure and expects to avoid 
some of the expenditures typically associated with the transition to a manufacturing enterprise

On March 25, 2003, we consummated a merger transaction with H Power pursuant to which we acquired H Power 
in  a  stock-for-stock  exchange  valued  at  approximately  $46.3  million.  In  connection  with  the  transaction,  H  Power 
stockholders received 0.8305 shares of our common stock for each share of H Power common stock held immediately 
prior  to  the  transaction.  Immediately  following  the  transaction  H  Power  became  a  wholly  owned  subsidiary  of  the 
Company. As part of the acquisition, we acquired intellectual property and certain other assets including cash, cash 
equivalents and marketable securities of H Power worth approximately $29.6 million, after payment of $7.1 million of 
certain costs and expenses associated with the consummation of the merger, which were accounted for as additional 
purchase price.

31

Public Offerings

In November 1999, we completed an initial public offering of 6,782,900 shares of common stock, which includes 
additional  shares  purchased  pursuant  to  exercise  of  the  underwriters’  over  allotment  option.  We  received  proceeds 
of $93.0 million, which was net of $8.7 million of expenses and underwriting discounts relating to the issuance and 
distribution of the securities.

In July 2001, we completed a follow-on public offering of 4,575,000 shares of common stock, which includes 
additional  shares  purchased  pursuant  to  exercise  of  the  underwriters’  over  allotment  option.  We  received  proceeds 
of $51.6 million, which was net of $3.3 million of expenses and underwriting discounts relating to the issuance and 
distribution of the securities.

In November 2003, the Company completed a public offering of 11,700,000 shares of common stock. We received 
proceeds of $55.0 million, net of $3.5 million of expenses and placement fees relating to the issuance and distribution 
of the securities.

In August 2005, the Company completed a public offering of 12,000,000 shares of common stock. We received 

proceeds of $70.6 million, net of expenses and placement fees relating to the issuance and distribution of the securities.

Private Placements

In July 2001, simultaneous with the closing of the follow-on public offering, we closed a private equity financing 
of 416,666 shares of common stock to GE Power Systems Equities, Inc., an indirect wholly owned subsidiary of General 
Electric Company, and 416,666 shares of common stock to Edison Development Corporation, an indirect wholly owned 
subsidiary of DTE Energy Company, raising an additional $9.6 million in net proceeds.

 In June 2006, the Company completed a private placement with Smart Hydrogen Inc. whereby the Company 
sold 395,000 shares of Class B Capital Stock, a class of preferred stock of the Company, which are convertible into 
39,500,000 shares of common stock of the Company, and 11,240 shares of common stock of the Company to Smart 
Hydrogen for an aggregate net purchase price of approximately $214.4 million. The purchase price per share of the shares 
sold to Smart Hydrogen, on an as-converted into common stock basis, was $5.50. The Buyer also contemporaneously 
purchased 1,825,000 shares of common stock of the Company from DTE Energy Foundation. Following the closing 
of  these  transactions,  the  Buyer  owned  approximately  35%  of  the  Company’s  outstanding  common  stock  on  an  if-
converted basis.

In December 2008, Smart Hydrogen Inc. sold to OJSC (Third Generation Company of the Wholesale Electricity 
Market)  (OGK-3)  all  395,000  shares  of  the  Company’s  Class  B  Capital  Stock  as  well  as  5,126,939  shares  of  the 
Company’s  common  stock  (representing  an  approximately  35%  ownership  stake  in  aggregate).  This  sale  triggered 
the automatic conversion of the Company’s Class B Capital Stock into 39,500,000 shares of common stock, and the 
termination of all the rights and obligations attached to the Class B Capital Stock. The rights and obligations attached 
to the Class B Capital Stock that terminated include, but are not limited to, the right to appoint directors, veto rights and 
voting support obligations under the Investor Rights Agreement dated as of June 29, 2006, as amended (the Investor 
Rights Agreement). OGK-3 has executed a joinder agreement to the Investor Rights Agreement and is prohibited from 
transferring its shares of the Company’s Common Stock to a competitor of the Company. OGK-3 is also bound by the 
same standstill provisions that applied to Smart Hydrogen, as set forth in the Investor Rights Agreement. This transfer 
and conversion triggered a change of control pursuant to Section 17 of our 1999 Stock Option and Incentive Plan; and, 
therefore, each outstanding Stock Option Right automatically became fully exercisable and conditions and restrictions 
on each outstanding Restricted Stock Award, Deferred Stock Award and Performance Share Award that relates solely 
to the passage of time and continued employment were removed.

Initial Capital Contributions

We  were  formed  in  June  1997  as  a  joint  venture  between  Mechanical  Technology  Incorporated  and  Edison 
Development Corporation, an indirect wholly owned subsidiary of DTE Energy Company. At formation, Mechanical 
Technology  Incorporated  contributed  assets  related  to  its  fuel  cell  program,  including  intellectual  property,  22 
employees, equipment and the right to receive government contracts for research and development of PEM fuel cell 
systems, if awarded. Edison Development Corporation contributed or committed to contribute $9.0 million in cash, 
expertise in distributed power generation and marketplace presence to distribute and sell stationary fuel cell systems.

32

In aggregate, Mechanical Technology Incorporated has made cash contributions of $27.0 million plus non-cash 
contributions of $14.2 million, while Edison Development Corporation has made aggregate cash contributions of $46.2 
million, including $5.0 million in connection with the closing of a private placement of our common stock in July, 2001. 
Mechanical Technology Incorporated and Edison Development Corporation have not made any additional cash or non-
cash contributions since October 1999 and July 2001, respectively.

GE Fuel Cell Systems 

In  March  2006,  the  Company,  GE  MicroGen,  Inc.  a  wholly-owned  subsidiary  of  General  Electric  Company, 
or GE, and GE restructured their service and equity relationships by terminating the joint venture, GEFCS, and the 
associated  distributor  and  other  agreements,  and  entering  into  a  new  development  collaboration  agreement.  Under 
the new agreement, the Company and GE (through its Global Research unit) have agreed to collaborate on programs 
including but not limited to development of tools, materials and components that can be applied to various types of 
fuel cell products. The Company and GE mutually agreed to extend the terms of the new development collaboration 
agreement such that the Company is obligated to  purchase $1 million of services from GE in  connection with this 
collaboration prior to December 31, 2009. As of December 31, 2008 the obligation remaining under the contract was 
approximately  $400,000.  The  development  collaboration  agreement  is  scheduled  to  terminate  on  the  earlier  of  (i) 
December 31, 2014 or (ii) upon completion of a certain level of program activity. 

Grant Agreements

Since  our  inception  we  have  been  awarded,  or  participated  in,  federal  and  state  government  contracts  related 
to  research,  development,  test  and  demonstration  of  our  PEM  fuel  cell  technology.  These  contracts  are  primarily 
cost reimbursement contracts associated with the development of our PEM fuel cell technology. We have recognized 
“research and development contract revenue” of approximately $88.7 million related to federal and state government 
contracts, and commercial contracts. We generally share in the cost of these programs, with cost-sharing percentages 
generally ranging from 22% and 78% of total project costs. We expect to continue certain research and development 
contract work that is directly related to our current product development efforts.

Contractual Obligations

Contractual obligations as of December 31, 2008, under agreements with non-cancelable terms are as follows:

Operating lease obligations  . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase obligations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other obligations (A), (B), (C) . . . . . . . . . . . . . . . . . . . . . . . . .
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Total 
$3,908,079
$ 744,500
$ 380,880
$ 5,033,459

<1 Year 
$ 1,717,725
524,500
380,880
$ 2,623,105

1-3 Years 
$2,190,354
220,000
—
$ 2,410,354

3-5 Years 
$—
—
—
$—

(A)  The Company has a contractual obligation to NYSERDA, a New York State Government agency, to pay royalties 
to NYSERDA based on 0.5% of net sales of our GenCore and GenSys products if product is manufactured in the 
state of New York. See Note 18 (Commitments and Contingencies) of the Consolidated Financial Statements for 
more detail.

(B)  The  Company  has  a  contractual  obligation  to  the  National  Research  Council  of  Canada  (NRC),  a  Canadian 
Government  agency,  through  an  Industrial  Research  Assistance  Program  (IRAP)  agreement,  to  pay  royalties 
to NRC based on 3.5% of gross revenues. See Note 10 (Repayable Government Assistance) of the Consolidated 
Financial Statements for more detail.

(C)  The  Company  has  a  contractual  obligation  with  General  Electric  (GE)  through  its  Global  Research  unit.  The 
Company and GE mutually agreed to extend the terms of the new development collaboration agreement such that 
the Company is obligated to purchase $1 million of services from GE in connection with this collaboration prior 
to December 31, 2009. The development collaboration agreement is scheduled to terminate on the earlier of (i) 
December 31, 2014 or (ii) upon the completion of a certain level of program activity. See Note 18 (Commitments 
and Contingencies) of the Consolidated Financial Statements for more detail.

33

 
ITEM 7A.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

We invest our excess cash in government, government backed and interest-bearing investment-grade securities 
that we generally hold for the duration of the term of the respective instrument. We do not utilize derivative financial 
instruments, derivative commodity instruments or other market risk sensitive instruments, positions or transactions 
in any material fashion. Accordingly, other than with respect to auction rate debt securities, we believe that, while the 
investment-grade securities we hold are subject to changes in the financial standing of the issuer of such securities, we 
are not subject to any material risks arising from changes in interest rates, foreign currency exchange rates, commodity 
prices, equity prices or other market changes that affect market risk sensitive instruments.

A portion of the Company’s total financial performance was attributable to our operations in Canada. Our exposure 
to  changes  in  foreign  currency  rates  primarily  arises  from  short-term  inter-company  transactions  with  our  Canadian 
subsidiaries and from client receivables in different currencies. Foreign sales are mostly made by our Canadian subsidiaries 
in their respective countries and are typically denominated in Canadian dollars. Our foreign subsidiaries incur most of 
their expenses in their local currency as well, which helps minimize our risk of exchange rate fluctuations. Accordingly, 
the Company’s financial results are affected by risks such as currency fluctuations, particularly between the U.S. dollar 
and the Canadian dollar. As exchange rates vary, the Company’s results can be materially affected.

In  addition,  the  Company  may  source  inventory  among  its  worldwide  operations.  This  practice  can  give  rise 
to  foreign  exchange  risk  resulting  from  the  varying  cost  of  inventory  to  the  receiving  location  as  well  as  from  the 
revaluation of intercompany balances. The Company mitigates this risk through local sourcing efforts.

ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The Company’s consolidated financial statements included in this report beginning at page F-1 are incorporated 

in this Item 8 by reference.

ITEM 9. 

 CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND 
FINANCIAL DISCLOSURE

None.

ITEM 9A.  CONTROLS AND PROCEDURES

(a) CONCLUSION REGARDING THE EFFECTIVENESS OF DISCLOSURE CONTROLS AND 
PROCEDURES.

Under the supervision and with the participation of our management, including our principal executive officer and 
principal financial officer, we conducted an evaluation of the effectiveness of our disclosure controls and procedures, 
as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the 
Exchange Act). Based on this evaluation, our principal executive officer and our principal financial officer concluded 
that, as of the end of the period covered by this annual report, our disclosure controls and procedures were effective, in 
that they provide reasonable assurance that information required to be disclosed by us in the reports we file or submit, 
under  the  Exchange  Act,  is  recorded,  processed,  summarized  and  reported  within  the  time  period  specified  in  the 
Securities and Exchange Commission’s rules and forms.

(b) MANAGEMENT’S REPORT ON INTERNAL CONTROL OVER FINANCIAL REPORTING

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial 
reporting, as such term is defined in Exchange Act Rules 13a-15(f) and 15d-15(f). Under the supervision and with the 
participation of our management, including our principal executive officer and principal financial officer, we conducted 
an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal 
Control—Integrated Framework issued by the Committee of Sponsoring Organization of the Treadway Commission. 
Based on our evaluation under the framework in Internal Control—Integrated Framework , our management concluded 
that the Company maintained effective internal control over financial reporting as of December 31, 2008.

34

(c) ATTESTATION REPORT OF THE REGISTERED PUBLIC ACCOUNTING FIRM

The attestation report of the Company’s independent registered public accounting firm regarding internal control 
over  financial  reporting  is  included  on  page  F-3  of  this  Annual  Report  on  Form  10-K  and  incorporated  herein  by 
reference.

(d) CHANGES IN INTERNAL CONTROL OVER FINANCIAL REPORTING

There were no changes in the Company’s internal control over financial reporting identified in connection with 
the  evaluation  of  such  internal  control  that  occurred  during  the  Company’s  last  fiscal  quarter  that  have  materially 
affected, or are reasonably likely to materially affect, the Company’s internal control over financial reporting.

ITEM 9B.  OTHER INFORMATION

Not applicable.

PART III

ITEM 10.  DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE

(a) DIRECTORS

Incorporated herein by reference is the information appearing under the captions “Information about our Directors” 
and  “Compliance  with  Section  16(a)  of  the  Securities  Exchange  Act  of  1934”  in  the  Company’s  definitive  Proxy 
Statement for its 2009 Annual Meeting of Stockholders to be filed with the Security and Exchange Commission.

(b) EXECUTIVE OFFICERS

Incorporated  herein  by  reference  is  the  information  appearing  under  the  captions  “Executive  Officers”  and 
“Compliance with Section 16(a) of the Securities Exchange Act of 1934” in the Company’s definitive Proxy Statement 
for its 2009 Annual Meeting of Stockholders to be filed with the Security and Exchange Commission.

(c) CODE OF BUSINESS CONDUCT AND ETHICS

We have adopted a Code of Business Conduct and Ethics that applies to all officers, directors, employees and 
consultants of the Company. The Code of Business Conduct and Ethics is intended to comply with Item 406 of Regulation 
S-K of the Securities Exchange Act of 1934 and with applicable rules of The NASDAQ Stock Market, Inc. Our Code of 
Business Conduct and Ethics is posted on our Internet website under the “Investor” page. Our Internet website address 
is www.plugpower.com. To the extent required or permitted by the rules of the SEC and NASDAQ, we will disclose 
amendments and waivers relating to our Code of Business Conduct and Ethics in the same place as our website.

(d) AUDIT COMMITTEE

Incorporated  herein  by  reference  is  the  information  appearing  under  the  caption  “Audit  Committee”  in  the 
Company’s definitive Proxy Statement for its 2009 Annual Meeting of Stockholders to be filed with the Securities and 
Exchange Commission.

ITEM 11.  EXECUTIVE COMPENSATION

Incorporated herein by reference is the information appearing under the caption “Executive Compensation” in 
the Company’s definitive Proxy Statement for its 2009 Annual Meeting of Stockholders to be filed with the Security 
and Exchange Commission.

ITEM 12.   SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND 

RELATED STOCKHOLDER MATTERS

Incorporated  herein  by  reference  is  the  information  appearing  under  the  caption  “Principal  and  Management 
Stockholders” in the Company’s definitive Proxy Statement for its 2009 Annual Meeting of Stockholders to be filed 
with the Securities and Exchange Commission.

35

EQUITY COMPENSATION PLAN INFORMATION

The following table gives information about the shares of Common Stock that may be issued upon the exercise 
of options, restricted stock and warrants under the Plug Power, L.L.C. Second Amendment and Restatement of the 
Membership Option Plan (1997 Plan), the Company’s 1999 Stock Option and Incentive Plan, as amended (1999 Stock 
Option Plan) and the Company’s 1999 Employee Stock Purchase Plan, as of December 31, 2008.

Plan Category
Equity compensation plans approved by security  
holders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equity compensation plans not approved by 

security holders(3) . . . . . . . . . . . . . . . . . . . . . . .
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Number of shares to be 
issued upon exercise of 
outstanding options, 
warrants and rights 
(a)

Weighted average 
exercise price of 
outstanding options, 
warrants and rights 
(b)

Number of shares 
remaining 
available for future 
issuance under equity 
compensation plans 
(excluding shares 
reflected in column(a)) 
(c)

6,119,804(1)

571,429(3)
6,691,233  

$8.84

  0.01
$8.09

4,336,449(2)

—  

4,336,449(2)

(1)   Represents outstanding options issued under the 1997 Plan and 1999 Stock Option Plan.

(2) 

Includes  4,038,883  shares  available  for  future  issuance  under  the  1999  Stock  Option  Plan  and  297,566  shares 
available  for  future  issuance  under  the  1999  Employee  Stock  Purchase  Plan.  The  1999  Stock  Option  Plan 
incorporates an evergreen formula pursuant to which the aggregate number of shares reserved for issuance under 
the 1999 Stock Option Plan will increase on the first day of January and July each year. On each January 1 and 
July  1,  the  aggregate  number  of  shares  reserved  for  issuance  under  the  1999  Stock  Option  Plan  increases  by 
16.45% of any net increase in the total number of outstanding shares since the preceding July 1 or January 1, as 
the case may be. In accordance with this formula, on January 1, 2009, the maximum number of shares remaining 
available for future issuance under the 1999 Stock Option Plan is 10,581,012.

(3)  Represents  571,429  warrants  issued  to  General  Hydrogen  shareholders  in  connection  with  the  acquisition  of 

General Hydrogen.

ITEM 13. 

 CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS AND DIRECTOR 
INDEPENDENCE

Incorporated  herein  by  reference  is  the  information  appearing  under  the  caption  “Certain  Relationships  and 
Related Transactions” in the Company’s definitive Proxy Statement for its 2009 Annual Meeting of Stockholders to be 
filed with the Securities and Exchange Commission.

ITEM 14.  PRINCIPAL ACCOUNTING FEES AND SERVICES

Incorporated herein by reference is the information appearing under the caption “Independent Auditors Fees” in 
the Company’s definitive Proxy Statement for its 2009 Annual Meeting of Stockholders to be filed with the Securities 
and Exchange Commission.

36

 
 
 
 
 
 
 
ITEM 15.  EXHIBITS AND FINANCIAL STATEMENT SCHEDULES

15(a)(1) FINANCIAL STATEMENTS

 PART IV

The financial statements and notes are listed in the Index to Consolidated Financial Statements on page F-1 of 

this Report.

15(a)(2) FINANCIAL STATEMENT SCHEDULES

Consolidated financial statement schedules not filed herein have been omitted as they are not applicable or the required 

information or equivalent information has been included in the consolidated financial statements or the notes thereto.

15(a)(3) EXHIBITS

Exhibits are as set forth in the “List of Exhibits” which immediately precedes the Index to Consolidated Financial 

Statements on page F-1 of this Report.

37

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly 

caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

SIGNATURES

PLuG Power InC.
By: /s/ Andrew MArsh 
       Andrew MArsh,
       Chief Executive Officer

Date: March 16, 2009

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the 

following persons on behalf of the registrant and in the capacities and on the dates indicated.

Signature

/s/ Andrew MArsh
Andrew MArsh

/s/ GerALd A. Anderson 
GerALd A. Anderson

/s/ JeFFrey M. drAZAn 
JeFFrey M. drAZAn

/s/ LArry G. GArBerdInG 
LArry G. GArBerdInG

/s/ MAureen o. heLMer 
MAureen o. heLMer

/s/ GeorGe C. MCnAMee 
GeorGe C. MCnAMee

/s/ GAry K. wILLIs 
GAry K. wILLIs

Title

Chief Executive Officer and Director
(Principal Executive Officer)

Date

March 16, 2009

Chief Financial Officer

March 16, 2009

March 16, 2009

March 16, 2009

March 16, 2009

March 16, 2009

March 16, 2009

Director

Director

Director

Director

Director

38

 
 
 
 
 
  
 
 
  
 
 
 
 
 
 
 
 
 
 
Certain  exhibits  indicated  below  are  incorporated  by  reference  to  documents  of  Plug  Power  on  file  with  the 
Commission. Exhibits nos. 10.1, 10.2, 10.3, 10.5, 10.7 and 10.12 through 10.21 represent the management contracts and 
compensation plans and arrangements required to be filed as exhibits to this Annual Report on Form 10-K. 

Exhibit No. 
and Description  

3.1  Amended and Restated Certificate of Incorporation of Plug Power Inc.(9)

3.2  Amended and Restated By-laws of Plug Power Inc.(1)

3.3  Certificate of Amendment to Amended and Restated Certificate of Incorporation of Plug Power.(9)

4.1 

Specimen certificate for shares of common stock, $.01 par value, of Plug Power.(2)

10.1 

Second Amendment and Restatement of the Membership Option Plan dated February 15, 1999 and 
First  Amendment  to  Second  Amendment  and  Restatement  of  the  Membership  Option  Plan  dated 
October 1, 1999.(3)

10.2  

1999 Stock Option and Incentive Plan.(2)

10.3   Employee Stock Purchase Plan.(2)

10.4 

Registration  Rights  Agreement  to  be  entered  into  by  the  Registrant  and  the  stockholders  of  the 
Registrant.(9)

10.5 

Severance  Agreement,  dated  as  of  July  12,  2007,  by  and  between  Plug  Power  Inc.  and  Gerald  A. 
Anderson.(6)

10.6 

Joint  Development  Agreement,  dated  as  of  June  2,  2000,  between  Plug  Power  Inc.  and  Engelhard 
Corporation.(9)

10.7 

Executive Severance Agreement, dated as of July 9, 2007, by and between Plug Power Inc. and Gerald 
A. Anderson.(6)

10.8

10.9

Indemnification Agreement, dated as of July 9, 2007, by and between Plug Power Inc. and Gerald A. 
Anderson.(6)

Investor Rights Agreement, dated as of June 29, 2006, by and among Plug Power Inc., Smart Hydrogen 
Inc. and the other parties named therein.(1)

10.10

Registration Rights Agreement, dated as of June 29, 2006, by and between Plug Power Inc. and Smart 
Hydrogen Inc.(1)

10.11 

Form of Indemnification Agreement entered into with each director.(1)

10.12 

Form of Incentive Stock Option Agreement.(4)

10.13 

Form of Non-Qualified Stock Option Agreement for Employees.(4)

10.14 

Form of Non-Qualified Stock Option Agreement for Independent Directors.(4)

10.15 

Form of Restricted Stock Award Agreement.(4)

39

 
   
   
   
   
 
   
   
   
 
   
 
   
 
   
 
   
 
   
 
   
 
   
   
   
   
   
10.16  Amendment No. 1 to the 1999 Stock Option and Incentive Plan.(4)

10.17 

Plug Power Executive Incentive Plan.(5)

10.18

Employment Agreement, dated as of April 7, 2008, by and between Andrew Marsh and Plug Power 
Inc.(7)

10.19 

Form of Non-Qualified Stock Option Agreement for Employees.(7)

10.20

Executive Employment Agreement, dated as of May 5, 2008, by and between Gerard L. Conway, Jr. 
and Plug Power Inc.(8)

10.21

Executive Employment Agreement, dated as of May 5, 2008, by and between Mark A. Sperry and 
Plug Power Inc.(8)

23.1   Consent of KPMG LLP.(9)

31.1 and 31.2  Certifications pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.(9)

32.1 and 32.2

Certifications pursuant to 18 U.S.C. Section 1350, adopted pursuant to Section 906 of the Sarbanes-
Oxley Act of 2002.(9)

(1) 

Incorporated by reference to the Company’s current Report on Form 8-K dated June 29, 2006.

(2) 

Incorporated by reference to the Company’s Registration Statement on Form S-1 (File Number 333-86089).

(3) 

Incorporated by reference to the Company’s Registration Statement on Form S-1/A (File Number 333-86089).

(4) 

Incorporated by reference to the Company’s Form 10-Q for the period ended June 30, 2006.

(5) 

Incorporated by reference to the Company’s current Report on Form 8-K dated February 15, 2007.

(6) 

Incorporated by reference to the Company’s current Report on Form 8-K dated July 9, 2007.

(7) 

Incorporated by reference to the Company’s current Report on Form 8-K dated April 2, 2008.

(8) 

Incorporated by reference to the Company’s Form 10-Q for the period ended June 30, 2008. 

(9)  Filed herewith.

40

   
   
 
   
   
 
   
 
   
   
   
 
INDEX TO CONSOLIDATED FINANCIAL STATEMENTS

Reports of Independent Registered Public Accounting Firm  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated balance sheets as of December 31, 2008 and 2007  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated statements of operations for the years ended December 31, 2008, 2007 and 2006 and cumulative 
amounts from inception  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Consolidated statements of cash flows for the years ended December 31, 2008, 2007 and 2006 and cumulative 
amounts from inception  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Consolidated statements of stockholders’ equity and comprehensive loss for the years ended  

  Page
  F-1
  F-3

  F-4

  F-5

December 31, 2008, 2007 and 2006 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes to consolidated financial statements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

  F-6
  F-7

41

 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders 
Plug Power Inc.:

We have audited the accompanying consolidated balance sheets of Plug Power Inc. and subsidiaries (a development 
stage enterprise) as of December 31, 2008 and 2007, and the related consolidated statements of operations, stockholders’ 
equity  and  comprehensive  loss,  and  cash  flows  for  each  of  the  years  in  the  three-year  period  ended  December  31, 
2008, and the information included in the cumulative from inception presentations for the period January 1, 2001 to 
December 31, 2008 (not separately presented herein).  These consolidated financial statements are the responsibility 
of the Company’s management.  Our responsibility is to express an opinion on these consolidated financial statements 
based on our audits.  

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United 
States). Those standards require that we plan and perform the audits to obtain reasonable assurance about whether 
the  financial  statements  are  free  of  material  misstatement.    An  audit  includes  examining,  on  a  test  basis,  evidence 
supporting the amounts and disclosures in the financial statements.  An audit also includes assessing the accounting 
principles used and significant estimates made by management, as well as evaluating the overall financial statement 
presentation.  We believe that our audits provide a reasonable basis for our opinion.

In  our  opinion,  the  consolidated  financial  statements  referred  to  above  present  fairly,  in  all  material  respects,  the 
financial position of Plug Power Inc. and subsidiaries (a development stage enterprise) as of December 31, 2008 and 
2007,  and  the  results  of  their  operations  and  their  cash  flows  for  each  of  the  years  in  the  three-year  period  ended 
December 31, 2008, and the information included in the cumulative from inception presentations for the period January 
1, 2001 to December 31, 2008 (not separately presented herein), in conformity with U.S. generally accepted accounting 
principles. 

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States), Plug Power Inc. and subsidiaries’ internal control over financial reporting as of December 31, 2008, based on 
criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations 
of the Treadway Commission (COSO), and our report dated March 16, 2009, expressed an unqualified opinion on the 
effectiveness of Plug Power Inc. and subsidiaries’ internal control over financial reporting.

/s/ KPMG LLP

Albany, New York
March 16, 2009

F-1

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Board of Directors and Stockholders 
Plug Power Inc.

We have audited internal control over financial reporting of Plug Power Inc. and subsidiaries (a development stage 
enterprise) as of December 31, 2008, based on criteria established in Internal Control - Integrated Framework issued 
by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). The Company’s management is 
responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness 
of internal control over financial reporting, included in the accompanying Management’s Report on Internal Control 
Over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial 
reporting based on our audit.  

We conducted our audit in accordance with the standards of the Public Company Accounting Oversight Board (United 
States).  Those  standards  require  that  we  plan  and  perform  the  audit  to  obtain  reasonable  assurance  about  whether 
effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining 
an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and 
testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit 
also included performing such other procedures as we considered necessary in the circumstances. We believe that our 
audit provides a reasonable basis for our opinion.

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding 
the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with 
generally accepted accounting principles.  A company’s internal control over financial reporting includes those policies 
and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect 
the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are 
recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting 
principles, and that receipts and expenditures of the company are being made only in accordance with authorizations 
of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely 
detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on 
the financial statements.  

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements.  Also, 
projections  of  any  evaluation  of  effectiveness  to  future  periods  are  subject  to  the  risk  that  controls  may  become 
inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may 
deteriorate.

In our opinion, Plug Power Inc. and subsidiaries (a development stage enterprise) maintained, in all material respects, 
effective internal control over financial reporting as of December 31, 2008, based on criteria established in Internal 
Control - Integrated Framework issued by COSO.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United 
States), the consolidated balance sheets of Plug Power Inc. and subsidiaries as of December 31, 2008 and 2007, and the 
related consolidated statements of operations, stockholders’ equity and comprehensive loss, and cash flows for each 
of the years in the three-year period ended December 31, 2008, and the information included in the cumulative from 
inception presentations for the period January 1, 2001 to December 31, 2008 (not separately presented herein), and our 
report dated March 16, 2009 expressed an unqualified opinion on those consolidated financial statements.

/s/ KPMG LLP

Albany, New York
March 16, 2009

F-2

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
CONSOLIDATED BALANCE SHEETS

December 31, 
2008

December 31, 
2007

Current assets:

Assets

Cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Trading securities - auction rate debt securities  . . . . . . . . . . . . . . . . . . . . . . . . .
Available-for-sale securities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accounts receivable, less allowance of $75,148 in 2008  

and $57,000 in 2007   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventory  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid expenses and other current assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total current assets   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Auction rate debt securities repurchase agreement. . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intangible assets, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 80,844,500 
52,650,654 
23,843,950 

$ 12,076,938 
— 
153,623,670 

2,151,121 
6,264,372 
2,350,738 
168,105,335 
17,769,974 
10,224,346 
— 
12,843,182 
169,130 
$ 209,111,967 

4,608,456 
5,787,180 
2,720,915 
178,817,159 
21,064,795 
— 
51,399,497 
16,979,327 
130,940 
$ 268,391,718 

Current liabilities:

Liabilities and Stockholders’ Equity

Accounts payable   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accrued expenses  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Borrowings under line of credit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repayable government assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total liabilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$

3,274,972 
9,945,316 
62,875,000 
5,425,270 
413,837 
81,934,395 
173,138 
1,140,312 
83,247,845 

$

4,636,997 
5,509,804 
— 
3,341,341 
1,423,188 
14,911,330 
4,388,374 
191,540 
19,491,244 

Stockholders’ equity:

Class B Capital stock, a class of preferred stock, $0.01 par value per share; 

5,000,000 shares authorized; 

0 shares at December 31, 2008 and 395,000 shares at  

December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

—

3,950 

Common stock, $0.01 par value per share; 245,000,000 shares authorized; 

Issued (including shares in treasury): 

128,164,003 at December 31, 2008 and 87,882,922 at  

December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Additional paid-in capital  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Accumulated other comprehensive income. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Deficit accumulated during the development stage  . . . . . . . . . . . . . . . . . . . . . .
Less common stock in treasury:

402,114 shares at December 31, 2008 and 0 shares at  

1,281,640
765,347,706 
(359,253)
(639,662,385)

878,829 
758,169,498 
7,810,558 
(517,962,361)

December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total stockholders’ equity  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
  Total liabilities and stockholders’ equity . . . . . . . . . . . . . . . . . . . . . . . . .

(743,586)
125,864,122 
$ 209,111,967 

— 
248,900,474 
$ 268,391,718 

The accompanying notes are an integral part of the consolidated financial statements.

F-3

 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
CONSOLIDATED STATEMENTS OF OPERATIONS

For the years ended December 31, 2008, 2007 and 2006 and Cumulative Amounts from Inception

Product and service revenue . . . . . . . . . . . . . . . . .
Research and development contract  

revenue  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cost of product and service revenue  . . . . . . . . . .
Cost of research and development contract 

revenue  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
In-process research and development  . . . . . . . . .
Research and development expense . . . . . . . . . . .
Selling, general and administrative  

expenses  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill impairment charge . . . . . . . . . . . . . . . .
Amortization of intangible assets . . . . . . . . . . . . .
Operating loss . . . . . . . . . . . . . . . . . . . . . .

Interest and other income and net realized  

December 31,
2008
4,667,295 

$

December 31,
2007
$ 3,081,956 

December 31,
2006
$ 2,656,475 

Cumulative  
Amounts
from Inception
40,109,176 
$

13,234,022 
17,901,317 
11,442,232 

13,188,667 
16,270,623 
9,398,774 

5,179,275 
7,835,750 
4,832,994 

88,701,255 
128,810,431 
54,971,443 

21,504,926 
— 
34,987,207 

19,044,847 
— 
39,218,349 

7,636,662 
— 
41,577,234 

129,339,411 
12,026,640 
405,483,259 

28,333,151 
45,842,656 
2,224,954 
(126,433,809)

19,323,158 
— 
1,614,103 
(72,328,608)

12,267,862 
— 
— 
(58,479,002)

128,431,191 
45,842,656 
18,963,558 
(666,247,727)

gains from available-for-sale securities  . . . . .

5,134,442 

12,337,792 

8,340,250 

47,491,884 

Gain on auction rate debt securities repurchase 

agreement  . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10,224,346 

— 

— 

10,224,346 

Impairment loss on available-for-sale  

securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Interest and other expense  . . . . . . . . . . . . . . . . . .
Loss before equity in losses of affiliates  . . . . . . .
Equity in losses of affiliates . . . . . . . . . . . . . . . . .
Net loss  . . . . . . . . . . . . . . . . . . . . . . . . . . .

Loss per share:

(10,224,346)
(400,657)
(121,700,024)
— 

(10,224,346)
(2,328,792)
(621,084,635)
(18,577,750)
$ (121,700,024) $ (60,570,816) $ (50,309,587) $ (639,662,385)

— 
(170,835)
(50,309,587)
— 

— 
(580,000)
(60,570,816)
— 

Basic and diluted . . . . . . . . . . . . . . . . . . . .

$

(1.36) $

(0.69) $

(0.58)

Weighted average number of common shares 

outstanding . . . . . . . . . . . . . . . . . . . . . . . . . . .

89,383,480 

87,341,717 

86,100,326 

The accompanying notes are an integral part of the consolidated financial statements.

F-4

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
CONSOLIDATED STATEMENTS OF CASH FLOWS

For the years ended December 31, 2008, 2007 and 2006 and cumulative amounts from inception

Cash Flows From Operating Activities: 
Net loss  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments to reconcile net loss to net cash used in operating activities: 

Depreciation and amortization  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Equity in losses of affiliates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of intangible asset   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Noncash prepaid development costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Gain) loss on disposal of property, plant and equipment  . . . . . . . . . . . . . . . .
In-kind services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock-based compensation  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provision for bad debts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization of deferred grant revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Amortization and write-off of deferred rent   . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill impairment charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Impairment loss on available-for-sale securities  . . . . . . . . . . . . . . . . . . . . . . .
Gain on auction rate debt securities repurchase agreement   . . . . . . . . . . . . . .
Gain on termination of repayable government assistance . . . . . . . . . . . . . . . .
In-process research and development . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changes in assets and liabilities, net of effects of acquisitions: 

Accounts receivable  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inventory   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prepaid expenses and other current assets   . . . . . . . . . . . . . . . . . . . . . . . .
Accounts payable and accrued expenses . . . . . . . . . . . . . . . . . . . . . . . . . .
Deferred revenue  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net cash used in operating activities  . . . . . . . . . . . . . . . . . . . . . . . . .

Cash Flows From Investing Activities: 

Cash paid for acquisitions, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase of property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from disposal of property, plant and equipment  . . . . . . . . . . . .
Purchase of intangible asset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Investment in affiliate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from maturities and sales of available-for-sale securities   . . . .
Purchases of available-for-sale securities  . . . . . . . . . . . . . . . . . . . . . . . . .
Net cash provided by (used in) investing activities  . . . . . . . . . . . . . .

Cash Flows From Financing Activities: 

Proceeds from issuance of common and preferred stock   . . . . . . . . . . . . . . . .
Proceeds from initial public offering, net   . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock issuance costs  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Purchase of treasury stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Proceeds from stock option exercises and employee stock purchase plan  . . . 
Cash released from escrow  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Repayment of loans due to General Hydrogen Shareholders   . . . . . . . . . . . . .
Proceeds from borrowings under line of credit  . . . . . . . . . . . . . . . . . . . . . . . .
Repayment of government assistance   . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Principal payments on long-term debt and capital lease obligations   . . . . . . .
Net cash provided by financing activities  . . . . . . . . . . . . . . . . . . . . .
Effect of exchange rate changes on cash   . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Increase (decrease) in cash and cash equivalents . . . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents, beginning of period  . . . . . . . . . . . . . . . . . . . . .
Cash and cash equivalents, end of period   . . . . . . . . . . . . . . . . . . . . . . . . . .

Twelve months ended  
December 31, 
2007

2006

2008

Cumulative 
Amounts
from Inception

$(121,700,024)

$ (60,570,816)

$

(50,309,587)

$ (639,662,385)

4,398,147 
— 
2,224,954 
— 
(2,701)
— 
8,590,573 
75,148 
— 
— 
45,842,656 
10,224,346 
(10,224,346)
(1,232,522)
— 

2,281,723 
(521,253)
256,448 
1,103,013 
2,087,370 
(56,596,468)

— 
(1,418,641)
14,587 
— 
— 
266,774,180 
(199,713,772)
65,656,354 

— 
— 
— 
(618,642)
202,875 
— 
— 
62,875,000 
(2,235,244)
— 
60,223,989 
(516,313)
68,767,562 
12,076,938 
$ 80,844,500 

3,847,024 
— 
1,614,103 
— 
12,421 
— 
5,422,745 
57,000 
— 
— 

— 
— 
— 
— 

3,219,790 
— 
— 
— 
— 
— 
4,266,130 
35,670 
— 
— 

— 
— 
— 
— 

(2,738,263)
655,753 
1,223,756 
518,297 
647,218 
(49,310,762)

(47,732,866)
(2,944,405)
13,963 
— 
— 
556,640,568 
(472,899,139)
33,078,121 

— 
— 
— 
— 
480,654 
— 
(400,000)
— 
— 
— 
80,654 
1,329,059 
(14,822,928)
26,899,866 
$ 12,076,938 

588,658 
(866,195)
(1,186,691)
(1,399,159)
(455,728)
(46,107,112)

(1,000,000)
(1,274,794)
— 
— 
— 
852,968,512 
(1,014,319,441)
(163,625,723)

217,311,820 
— 
(2,869,691)
— 
396,019 
3,965,274 
— 
— 
— 
(4,048,447)
214,754,975 
— 
5,022,140 
21,877,726 
26,899,866 

$

38,428,722 
18,577,750 
18,963,558 
10,000,000 
37,213 
1,340,000 
43,308,431 
167,818 
(1,000,000)
2,000,000 
45,842,656 
10,224,346 
(10,224,346)
(1,232,522)
7,042,640 

(1,165,510)
(5,069,637)
(3,304,364)
5,039,020 
6,426,908 
(454,259,702)

(19,267,125)
(38,342,221)
344,216 
(9,624,500)
(1,500,000)
2,596,199,458 
(2,682,691,304)
(154,881,476)

428,529,602 
201,911,705 
(5,548,027)
(618,642)
11,445,225 
— 
(400,000)
62,875,000 
(2,235,244)
(6,786,687)
689,172,932 
812,746 
80,844,500 

$

80,844,500 

The accompanying notes are an integral part of the consolidated financial statements.

F-5

 
 
 
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T

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

1.  NATURE OF OPERATIONS

Description of Business 

Plug Power Inc. is a development stage enterprise involved in the design, development and manufacture of fuel 
cell systems for industrial-motive (forklift or material handling) markets and stationary power markets worldwide. The 
Company is a development stage enterprise because substantially all of the Company’s resources and efforts are aimed at 
the discovery of new knowledge that could lead to significant improvement in fuel cell reliability and durability, and the 
establishment, expansion and stability of markets for the Company’s products. The Company continues to experience 
significant net outflows of cash from operations and devotes significant efforts towards financial planning in order to 
forecast future cash spending and the ability to continue product development, manufacturing and sales activities. Fuel 
cell technology within the Company’s targeted markets – material handling, remote prime power, residential combined 
heat and power and wireless and wireline telecommunications - is still early in the technology adoption life cycle.

The Company is focused on proton exchange membrane, or PEM, fuel cell and fuel processing technologies and 
fuel  cell/battery  hybrid  technologies,  from  which  multiple  products  are  available.  A  fuel  cell  is  an  electrochemical 
device that combines hydrogen and oxygen to produce electricity and heat without combustion. Hydrogen is derived 
from hydrocarbon fuels such as natural gas, propane, methanol, ethanol, gasoline or biofuels. Hydrogen can also be 
obtained from the electrolysis of water. Hydrogen can be purchased directly from industrial gas providers or can be 
produced on-site at consumer locations.

The Company sells its products worldwide through a product sales force. The Company sells to business, industrial 

and government customers.

The  Company  was  organized  in  the  State  of  Delaware  on  June  27,  1997  and  became  listed  on  the  NASDAQ 
exchange on October 29, 1999. The Company was originally formed as a joint venture between Edison Development 
Corporation and Mechanical Technology Incorporated. In 2007 the Company merged with and acquired all the assets, 
liabilities and equity of Cellex Power Products, Inc. (Cellex) and General Hydrogen Corporation (General Hydrogen). 

Unless the context indicates otherwise, the terms “Company,” “Plug Power,” “we,” “our” or “us” as used herein 

refers to Plug Power Inc. (the registrant) and its subsidiaries.

Although the Company has a significant amount of available-for-sale securities, as described further below, as 
of December 31, 2008, neither the Company nor any of its subsidiaries was an “investment company” pursuant to the 
Investment Company Act of 1940, as amended.

Liquidity

The Company anticipates incurring substantial additional losses over at least the next several years and believes 
that its current cash, cash equivalents, trading securities and available-for-sale securities balances will provide sufficient 
liquidity to fund operations for at least the next twelve months. The Company’s cash requirements depend on numerous 
factors, including completion of our product development activities, our ability to commercialize our energy products, 
market acceptance of our systems and other factors. The Company expects to devote substantial capital resources to 
continue its development programs directed at commercializing our energy products for worldwide use, hiring and 
training  production  staff,  develop  and  expand  manufacturing  capacity  and  continue  expanding  our  production  and 
research and development activities. The Company expects to pursue the expansion of its operations through internal 
growth and strategic acquisitions and expects that such activities will be funded from existing cash, cash equivalents, 
trading securities, available-for-sale securities, and the issuance of additional equity or debt securities or additional 
borrowings  subject  to  market  and  other  conditions.  The  failure  to  raise  the  funds  necessary  to  finance  future  cash 
requirements or consummate future acquisitions could adversely affect the Company’s ability to pursue its strategy and 
could negatively affect its operations in future periods.

F-7

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Included in trading securities and working capital at December 31, 2008 and in available-for-sale securities 
and  working  capital  at  December  31,  2007,  respectively  is  $52.7  million  and  $90.8  million  of  auction  rate  debt 
securities.  The  auction  rate  debt  securities  are  secured  by  student  loans  which  are  generally  guaranteed  by  the 
Federal government. These auction rate debt securities are structured to be tendered at par, at the investor’s option, 
at auctions occurring every 27-30 days. However, due to the liquidity issues in the credit and capital markets, the 
market for auction rate debt securities began experiencing auction failures in February 2008 and there have been no 
successful auctions for the securities held in our portfolio since the failures began. We continue to receive interest on 
these securities, subject to an interest rate cap formula for each security as periodically adjusted in accordance with 
the respective securities’ agreement. At December 31, 2008, the interest rates ranged from 1.55% to 3.43% on the 
auction rate debt securities as compared to the interest rate range at December 31, 2007 from 5.6% to 6.85%.   See 
Note 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase Agreement.  

The Company has pledged these securities as collateral to a third-party lender for a Credit Line Agreement (See 
Note 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase Agreement) entered into in December 
2008. Given the lack of liquidity in the market for auction rate debt securities, the estimated fair value of these auction 
rate debt securities have become lower than their cost and, based on an analysis of other than temporary impairment 
factors, management has determined, beginning in the first quarter of 2008, that this difference represents a decline 
in value that is other than temporary. Accordingly, the Company recorded an other than temporary impairment charge 
of $10.2 million for the year ended December 31, 2008 in the consolidated statements of operations. In December 
2008,  the  Company  entered  into  a  Repurchase  Agreement  with  a  third-party  lender  such  that  the  Company  may 
require the third-party lender to repurchase the auction rate debt securities pledged as collateral for the Credit Line 
Agreement (See Note 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase Agreement), at their 
par value, from June 30, 2010 through July 2, 2012. The fair value of the Repurchase Agreement at its origination 
was $10.2 million and was recorded as income in the 2008 consolidated statement of operations.

As of December 31, 2008, we had cash and cash equivalents of $80.8 million, trading securities of $52.7 million, 

available-for-sale securities of $23.8 million and working capital of $86.2 million.

On April 3, 2007, we purchased all of the outstanding capital stock of Cellex, a development stage enterprise, 

from its equity holders for an aggregate cash purchase price of $46.1 million, including acquisition costs.

On May 4, 2007, the Company completed the acquisition of all of the outstanding shares of General Hydrogen, 
a development stage enterprise, for an aggregate purchase price of $12.4 million, including acquisition costs. The 
purchase  price  includes  the  settlement  of  $3  million  in  senior  secured  loans  previously  made  by  Plug  Power  to 
General Hydrogen, as well as 571,429 warrants granted to shareholders of General Hydrogen that were valued at $1.4 
million. The warrant price was based on a Monte Carlo simulation which was performed, and the mean value was 
selected. The warrants become exercisable when Plug Power’s Common Stock trades at a volume weighted average 
price of $7.00 or more for 10 consecutive trading days. The warrants carry an exercise price of $.01 per share and 
expire four years from the date of issuance.

In  June  2006,  the  Company  completed  a  private  placement  with  Smart  Hydrogen  Inc.  (the  Buyer)  whereby 
the Company sold 395,000 shares of Class B Capital Stock, a class of preferred stock of the Company, which were 
convertible  into  39,500,000  shares  of  common  stock,  and  11,240  shares  of  common  stock  to  the  Buyer  for  a  net 
purchase price of approximately $214.4 million, after payment of expenses relating to the issuance.  The Buyer also 
contemporaneously purchased 1,825,000 shares of common stock of the Company from DTE Energy Foundation. 

Change in Control

In December 2008, Smart Hydrogen Inc. sold to OJSC (Third Generation Company of the Wholesale Electricity 
Market) (OGK-3) all 395,000 shares of the Company’s Class B Capital Stock as well as 5,126,939 shares of the Company’s 
common stock. This sale triggered the automatic conversion of the Company’s Class B Capital Stock into 39,500,000 
shares of common stock, and the termination of all the rights and obligations attached to the Class B Capital Stock. 
The rights and obligations attached to the Class B Capital Stock that terminated included, but were not limited to, the 
right to appoint directors, veto rights and voting support obligations under the Investor Rights Agreement dated as of 

F-8

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

June 29, 2006, as amended (the Investor Rights Agreement). OGK-3 has executed a joinder agreement to the Investor 
Rights Agreement and is prohibited from transferring its shares of the Company’s Common Stock to a competitor of 
the Company. OGK-3 is also bound by the same standstill provisions that applied to Smart Hydrogen, as set forth in the 
Investor Rights Agreement. This transfer and conversion triggered a change of control pursuant to Section 17 of our 
1999 Stock Option and Incentive Plan; and, therefore, each outstanding Stock Option Right automatically became fully 
exercisable and conditions and restrictions on each outstanding Restricted Stock Award, Deferred Stock Award and 
Performance Share Award that relates solely to the passage of time and continued employment were removed.

2. 

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Principles of Consolidation

The consolidated financial statements include the financial statements of Plug Power Inc. and its wholly-owned 
subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. It is the 
Company’s policy to reclassify prior year consolidated financial statements to conform to current year presentation.

Cash Equivalents

Cash equivalents consist of money market accounts and overnight repurchase agreements with an initial term of 
less than three months. For purposes of the consolidated statements of cash flows, the Company considers all highly-
liquid debt instruments with original maturities of three months or less to be cash equivalents.

Investment Securities

Investment securities at December 31, 2008 and 2007 consist of U.S. Treasury, corporate debt, auction rate debt 
securities, and government agency securities. The Company classifies its securities in one of two categories: trading or 
available-for-sale. Trading securities consist of auction rate debt securities. All other securities not included in trading 
are classified as available-for-sale.

Trading and available-for-sale securities are recorded at fair value. Unrealized holding gains and losses on trading 
securities are included in earnings. Unrealized holding gains and losses, net of the related tax effect, on available-for-sale 
securities are excluded from earnings and are reported as a separate component of accumulated other comprehensive 
income  until  realized.  Realized  gains  and  losses  from  the  sale  of  available-for-sale  securities  are  determined  on  a 
specific-identification basis.

A decline in the fair value of any available-for-sale security below cost that is deemed to be other-than-temporary 
results in an impairment to reduce the carrying amount to fair value. The impairment is charged to earnings and a new 
cost basis for the security is established. To determine whether an impairment is other-than-temporary, the Company 
considers  whether  it  has  the  ability  and  intent  to  hold  the  investment  until  a  market  price  recovery  and  considers 
whether evidence indicating the cost of the investment is recoverable outweighs evidence to the contrary. Evidence 
considered in this assessment includes the reasons for the impairment, the severity and duration of the impairment, 
changes in value subsequent to year-end, forecasted performance of the investee, and the general market condition in 
the geographic area or industry the investee operates in.

Premiums and discounts are amortized or accreted over the life of the related available-for-sale security as an 

adjustment to yield using the interest method. Interest income is recognized when earned.

Accounts Receivable

Accounts  receivable  related  to  product  and  service  arrangements  are  recorded  when  products  are  shipped  or 
delivered to customers, as appropriate. Accounts receivable related to contract research and development arrangements 
are recorded when work is completed under government contracts. Accounts receivable are stated at the amount billed 
to customers. Interest and late charges billed to customers are not material, and because collection is uncertain, are 
not recognized until collected. Accounts receivable are ordinarily due between 30 and 60 days after the issuance of 

F-9

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

the invoice. Accounts are considered delinquent when more than 90 days past due. Delinquent receivables are reserved 
or written off based on individual credit evaluation and specific circumstances of the customer.  The allowance for 
doubtful accounts and related receivable are reduced when the amount is deemed uncollectible.

Inventory

Inventory is stated at the lower of cost or market value and consists primarily of raw materials. In the case of our 
limited consignment arrangements, we do not relieve inventory until the customer has accepted the product, at which 
time the risks and rewards of ownership have transferred. At December 31, 2008 and 2007, inventory on consignment 
was valued at approximately $45,000 and $60,000, respectively.

Goodwill and Other Intangible Assets 

The  Company  accounts  for  goodwill  pursuant  to  SFAS  No.  141,  Business  Combinations,  and  SFAS  No.  142, 
Goodwill  and  Other  Intangible  Assets.  Goodwill  represents  the  costs  of  the  acquired  businesses  in  excess  of  the 
fair value of Cellex and General Hydrogen net assets acquired during 2007 and H Power net assets acquired during 
2003. Goodwill is tested for impairment annually or more frequently when events or circumstances indicate that the 
carrying value more likely than not exceeds its fair value. Goodwill impairment testing is performed at the segment (or 
reporting unit) level. Currently, the Company’s goodwill is evaluated at the entity level as there is only one reporting 
unit. Goodwill is assigned to reporting units at the date the goodwill is initially recorded. Once goodwill has been 
assigned to reporting units, it no longer retains association with a particular acquisition, and all of the activities within a 
reporting unit, whether acquired or organically grown, are available to support the value of the goodwill. The goodwill 
impairment analysis is a two-step test. The first step, used to identify potential impairment, involves comparing the 
reporting  unit’s  fair  value  to  its  carrying  value  including  goodwill.  If  the  fair  value  of  a  reporting  unit  exceeds  its 
carrying value, applicable goodwill is considered not to be impaired. If the carrying value exceeds fair value, there 
is an indication of impairment and the second step is performed to measure the amount of impairment, if any. The 
Company performs its annual goodwill assessment under SFAS 142 at the date of its fiscal year end. As a result of this 
assessment, the Company has determined that a goodwill impairment has occurred and has recorded an impairment 
charge of $45.8 million. See Note 7, Goodwill and Other Intangible Assets for more information. 

SFAS No. 142 also requires that intangible assets with estimable useful lives be amortized over their respective 
estimated useful lives to their estimated residual values, and reviewed for impairment when certain triggering events 
occur in accordance with SFAS No. 144, Accounting for Impairment or Disposal of Long-Lived Assets. Intangible assets 
consisting of acquired technology and customer relationships related to Cellex and General Hydrogen are amortized 
using a straight-line method over their useful lives of 8 years. As a result of the uncertain economic environment in 
general and the decline in our stock price during the fourth quarter of 2008, the Company performed an impairment 
assessment in accordance with SFAS No. 144 as of December 31, 2008 and has determined that no impairment exists.

Product and Service Revenue

The  Company  applies  the  guidance  within  SEC  Staff  Accounting  Bulletin  No.  104,  Revenue  Recognition  in 
Financial Statements (SAB 104) in the evaluation of its contracts to determine when to properly recognize revenue. 
Under  SAB  104  revenue  is  recognized  when  title  and  risk  of  loss  have  passed  to  the  customer,  there  is  persuasive 
evidence of an arrangement, delivery has occurred or services have been rendered, the sales price is determinable, and 
collectibility is reasonably assured.

The Company’s initial sales of product contain multiple obligations that may include a combination of fuel cell 
systems,  continued  service,  maintenance,  a  supply  of  hydrogen  and  other  support.  While  contract  terms  generally 
stipulate that title and risk of ownership pass and require payment upon shipment or delivery of the fuel cell system, or 
acceptance in the case of certain consignment sales, and also stipulate that payment is not contingent on the achievement 
of specific milestones or other substantive performance, the multiple obligations within the Company’s contractual 
arrangements are generally not accounted for separately based on the Company’s limited commercial experience and 
lack  of  evidence  of  fair  value  of  the  different  components.  As  a  result,  the  Company  defers  recognition  of  product 
and service revenue and recognizes revenue on a straight-line basis over the stated contractual term, as the continued 

F-10

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

service, maintenance and other support obligations expire, which may be for periods of twelve to thirty months or 
in some cases as long as eight years. In the case of the Company’s limited consignment sales, the Company does not 
begin recognizing revenue on a deferred basis until the customer has accepted the product, at which time the risks and 
rewards of ownership have transferred, the price is fixed and the Company has a reasonable expectation of collection 
upon billing. The costs associated with the product, service and other obligations are generally expensed as they are 
incurred. At December 31, 2008 and 2007, the Company had unbilled amounts from product and service revenue in 
the amount of approximately $18,000 and $0, respectively. At December 31, 2008 and 2007, the Company had deferred 
product and service revenue in the amount of $5.4 million and $3.3 million, respectively.

As the Company gains experience, including field experience relative to service and warranty obligations based on 
the sales of initial products, the fair values for the multiple elements within future contracts may become determinable 
and the Company may, in future periods, recognize revenue upon shipment or delivery of the product or may continue 
to defer recognition, based on application of appropriate guidance within Emerging Issues Task Force (EITF) Issue No. 
00-21, Accounting for Revenue Arrangements with Multiple Deliverables.

Research and Development Contract Revenue

Research and development contract revenue primarily relates to cost reimbursement research and development 
contracts  associated  with  the  development  of  PEM  fuel  cell  technology.  The  Company  generally  shares  in  the  cost 
of these programs with cost sharing percentages generally ranging from 22% to 78% of total project costs. Revenue 
from time and material contracts is recognized on the basis of hours expended plus other reimbursable contract costs 
incurred during the period. Revenue from fixed fee contracts is recognized on the basis of percentage of completion. 
Our  percentage-of-completion  contracts  are  best  efforts  contracts  with  essentially  no  set  deliverables.  We  measure 
progress on our percentage-of-completion contracts based on costs incurred. All allowable work performed through 
the  end  of  each  calendar  quarter  is  billed,  subject  to  limitations  in  the  respective  contracts.  We  expect  to  continue 
certain research and development contract work that is directly related to our current product development efforts. At 
December 31, 2008 and 2007, the Company had unbilled amounts from research and development contract revenue 
in the amount of approximately $1.5 million and $0, respectively. At December 31, 2008 and 2007, the Company had 
customer deposits from research and development contract revenue, representing deposits in advance of performance 
of the allowable work, in the amount of approximately $13,000 and $0, respectively.

Property, Plant and Equipment

Property, plant and equipment are originally recorded at cost. Maintenance and repairs are expensed as costs are 
incurred. Depreciation on plant and equipment is calculated on the straight-line method over the estimated useful lives 
of the assets. The Company records depreciation and amortization over the following estimated useful lives:

Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Building improvements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Software, machinery and equipment . . . . . . . . . . . . . . . . . . . . . .

20 years
5–20 years
1–15 years

Impairment of Long-Lived Assets

The Company evaluates the recoverability of long-lived assets in accordance with the provisions of Statement 
of Financial Accounting Standards (SFAS) No. 144, Accounting for the Impairment of Ling-Lived Assets. Long-lived 
assets,  such  as  property,  plant,  and  equipment,  and  purchased  intangibles  subject  to  amortization,  are  reviewed  for 
impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be 
recoverable. Recoverability of assets to be held and used is measured by a comparison of the carrying amount of an 
asset to estimated undiscounted future cash flows expected to be generated by the asset. If the carrying amount of 
an  asset  exceeds  its  estimated  future  cash  flows,  an  impairment  charge  is  recognized  by  the  amount  by  which  the 
carrying amount of the asset exceeds the fair value of the asset. Assets to be disposed of would be separately presented 
in the balance sheet and reported at the lower of the carrying amount or fair value less costs to sell, and are no longer 

F-11

  
  
  
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

depreciated. The assets and liabilities of a disposal group classified as held for sale would be presented separately in 
the appropriate asset and liability sections of the balance sheet. As a result of the uncertain economic environment in 
general and the decline in our stock price during the fourth quarter of 2008, the Company performed an impairment 
assessment in accordance with SFAS No. 144 as of December 31, 2008 and has determined that no impairment exists.

Income Taxes

Income  taxes  are  accounted  for  under  the  asset  and  liability  method.  Deferred  tax  assets  and  liabilities  are 
recognized for the future tax consequences attributable to differences between the financial statement carrying amounts 
of existing assets and liabilities and their respective tax bases and operating loss and tax credit carryforwards. Deferred 
tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which 
those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of 
a change in tax rates is recognized in the period that includes the enactment date. A valuation allowance is recorded to 
reduce the carrying amounts of deferred tax assets if it is more likely than not that such assets will not be realized. We 
did not report a benefit for federal and state income taxes in the consolidated financial statements as the deferred tax 
asset generated from our net operating loss has been offset by a full valuation allowance because it is more likely than 
not that the tax benefits of the net operating loss carryforward will not be realized.

The  Company  adopted  Financial  Accounting  Standards  Board  (FASB)  Interpretation  No.  48,  Accounting  for 
Uncertainty in Income Taxes-an interpretation of FASB Statement No. 109, or FIN 48, which clarifies the accounting 
for  uncertainty  in  tax  positions  on  January  1,  2007.  This  Interpretation  requires  that  the  Company  recognize  in  its 
financial statements the impact of a tax position, if that position is more likely than not to be sustained on audit, based 
on the technical merits of the position.  The adoption of this Interpretation had no material impact on the Company’s 
consolidated financial statements.

Foreign Currency Translation

Foreign currency translation adjustments arise from conversion of the Company’s foreign subsidiary’s financial 
statements to US dollars for reporting purposes, and are included in accumulated other comprehensive income (loss) 
in stockholders’ equity on the accompanying consolidated balance sheets. Realized foreign currency transaction gains 
and losses are included in interest and other expense in the accompanying consolidated statements of operations.

Research and Development

Costs incurred in research and development by the Company are expensed as incurred.

Stock-Based Compensation

The Company has two stock-based employee compensation plans, which are described more fully in Note 14, 

Employee Benefit Plans.

The  accounting  provisions  of  SFAS  No.  123  Revised  (FAS  123R),  Share-Based  Payment,  which  establishes 
accounting for share-based awards exchanged for employee services and requires companies to expense the estimated 
fair  value  of  these  awards  over  the  requisite  employee  service  period,  have  been  adopted  by  the  Company  as  of 
January  1,  2006  in  conjunction  with  its  adoption  of  FAS  123R.  In  March  2005,  the  SEC  issued  Staff  Accounting 
Bulletin No. 107 (SAB 107) to assist filers by simplifying some of the implementation challenges of SFAS 123R. In 
particular, SAB 107 provides supplemental implementation guidance on FAS 123R, including guidance on valuation 
methods, classification of compensation expense, inventory capitalization of share-based compensation cost, income 
tax effects, disclosures in Management’s Discussion and Analysis and several other issues. The Company has applied 
the principles of SAB 107.

Under FAS 123R, share-based compensation cost is measured at the grant date, based on the estimated fair value 
of the award, and is recognized as expense over the employee’s requisite service period. The Company adopted the 
provisions of FAS 123R, using the modified prospective application, which provides for certain changes to the method 

F-12

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

for valuing share-based compensation. Under the modified prospective application, prior periods are not revised for 
comparative purposes. The valuation provisions of FAS 123R apply to new awards and to awards that were outstanding 
on the effective date and subsequently modified or cancelled. Estimated compensation expense for awards outstanding 
at the effective date will be recognized over the remaining service period using the compensation cost calculated for 
pro forma disclosure purposes under the original FASB Statement No. 123, Accounting for Stock-Based Compensation 
(FAS 123).

Stock-based compensation represents the cost related to stock-based awards granted to employees and directors. 
The Company measures stock-based compensation cost at grant date, based on the estimated fair value of the award, 
and  recognizes  the  cost  as  expense  on  a  straight-line  basis  (net  of  estimated  forfeitures)  over  the  option’s  requisite 
service period.

The Company estimates the fair value of stock-based awards using a Black-Scholes valuation model. Stock-based 
compensation expense is recorded in “Research and development expense” and “Selling, general and administrative 
expense” in the consolidated statements of operations based on the employees’ respective function.

The  Company  records  deferred  tax  assets  for  awards  that  result  in  deductions  on  the  Company’s  income  tax 
returns, unless the Company cannot recognize the deduction (i.e. the Company is in a net operating loss (NOL) position), 
based on the amount of compensation cost recognized and the Company’s statutory tax rate. Differences between the 
deferred tax assets recognized for financial reporting purposes and the actual tax deduction reported on the Company’s 
income tax return are recorded in additional paid-in capital if the tax deduction exceeds the deferred tax asset or in 
the consolidated statements of operations if the deferred tax asset exceeds the tax deduction and no additional paid-in 
capital exists from previous awards. No tax benefit or expense for stock-based compensation has been recorded during 
the years ended December 31, 2008, 2007 and 2006 since the Company remains in a NOL position.

Per Share Amounts

The Company reports net loss per basic and diluted common share in accordance with SFAS No. 128, Earnings 
Per Share, which establishes standards for computing and presenting loss per share. Basic earnings per common share 
are  computed  by  dividing  net  loss  available  to  common  stockholders  by  the  weighted  average  number  of  common 
shares  outstanding  during  the  reporting  period,  adjusted  for  unvested  restricted  stock.  Diluted  earnings  per  share 
reflects the potential dilution that could occur if securities or other contracts to issue common stock (such as convertible 
preferred  stock,  stock  options,  unvested  restricted  stock,  and  warrants)  were  exercised  or  converted  into  common 
stock or resulted in the issuance of common stock (net of any assumed repurchases) that then shared in the earnings 
of the Company, if any, computed by dividing net earnings by the combination of dilutive common share equivalents, 
comprised of shares issuable under outstanding warrants and the Company’s share-based compensation plans, and the 
weighted average number of common shares outstanding during the reporting period. Since the Company is in a net 
loss position, all common stock equivalents would be considered to be anti-dilutive and are, therefore, not included in 
the determination of diluted earnings per share. Accordingly, basic and diluted loss per share are the same.

The following table provides the components of the calculations of basic and diluted earnings per share:

Year Ended December 31,
2007

2008

2006

Numerator:

Net loss. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ (121,700,024)

$(60,570,816)

$ (50,309,587)

Denominator:

Weighted average number of common shares 

outstanding . . . . . . . . . . . . . . . . . . . . . . . . . . .

89,383,480

87,341,717

86,100,326

F-13

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

These dilutive potential common shares are summarized as follows:

Stock options outstanding (2) . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unvested restricted stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Preferred stock (1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warrants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Number of dilutive potential common shares  . . . . . . . . . . . . . . .

Year Ended December 31,
2008
2007
6,119,804
6,578,313
784,697
—
— 39,500,000
571,429
47,434,439

571,429
6,691,233

2006
6,511,563
430,623
39,500,000
—
46,442,186

(1)  The preferred stock amount represents the dilutive potential common shares of the 395,000 shares of Class B  
capital  stock  issued  on  June  29,  2006,  which  were  converted  into  39,500,000  shares  of  common  stock  in  
December 2008.

(2)  Does not include 1,349,772 shares subsequently issued in 2009 (which will immediately vest) for the achievement 

of scorecard objectives in 2008.

Use of Estimates

The consolidated financial statements of the Company have been prepared in conformity with U.S. generally 
accepted accounting principles, which require management to make estimates and assumptions that affect the reported 
amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements 
and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those 
estimates.

Recently Adopted Accounting Pronouncements

The  Company  adopted  SFAS  No.  157,  Fair  Value  Measurements  on  January  1,  2008,  for  financial  assets  and 
financial liabilities. The adoption of this standard is discussed more fully in Note 4, Fair Value Measurements. The 
adoption of SFAS No. 157 did not have a material effect on the Company’s consolidated financial position, consolidated 
results of operations, or liquidity.

The  Company  adopted  SFAS  No.  159,  The  Fair  Value  Option  for  Financial  Assets  and  Financial  Liabilities 
Including  an  Amendment  of  SFAS  No.  115  (SFAS  No.  159)  on  January  1,  2008.  This  standard  permits  entities  to 
choose to measure many financial instruments and certain warranty and insurance contracts at fair value on a contract-
by-contract  basis.  The  Company  chose  to  value  its  auction  rate  debt  securities  repurchase  agreement  at  fair  value. 
See Notes 4, Fair Value Measurements and 8, Credit Line Agreement and Auction Rate Debt Securities Repurchase 
Agreement, respectively. 

The Company adopted Emerging Issues Task Force (EITF)  No. 07-01, Accounting for Collaborative Arrangements 
Related  to  the  Development  and  Commercialization  of  Intellectual  Property  (EITF  No.  07-01)  on  January  1,  2008. 
This standard prescribes the accounting for collaborations. It requires certain transactions between collaborators to 
be recorded in the income statement on either a gross or net basis within expenses when certain characteristics exist 
in the collaboration relationship. The adoption did not have a material effect on its consolidated financial position, 
consolidated results of operations, or liquidity. 

The Company adopted Staff Accounting Bulletin No. 110, Share-Based Payment (SAB No. 110) on January 1, 2008. 
SAB No. 110 amends SAB No. 107, Share-Based Payment, and allows for the continued use, under certain circumstances, 
of the “simplified method” in developing an estimate of the expected term on stock options accounted for under the 
Statement of Financial Accounting Standards (SFAS) No. 123R, Share-Based Payment (revised 2004).  The Company 
continued to use the “simplified method”  in developing an estimate of the expected term on stock options  granted 
in 2008. The Company does not have sufficient historical exercise data to provide a reasonable basis upon which to 
estimate expected term due to the limited period of time its shares of Common Stock have been publicly traded. 

F-14

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Recent Accounting Pronouncements

In  December  2007,  the  FASB  issued  SFAS  No.  160,  Noncontrolling  Interests  in  Consolidated  Financial 
Statements—an amendment of Accounting Research Bulletin No. 51 (SFAS No. 160). This new standard establishes 
accounting and reporting standards for ownership interests in subsidiaries held by parties other than the parent, the 
amount of consolidated net income attributable to the parent and to the noncontrolling interest, changes in a parent’s 
ownership interest and the valuation of retained noncontrolling equity investments when a subsidiary is deconsolidated. 
The  statement  also  establishes  reporting  requirements  that  provide  sufficient  disclosures  that  clearly  identify  and 
distinguish between the interests of the parent and the interests of the noncontrolling owners. This standard is effective 
for  fiscal  years  beginning  after  December  15,  2008.  The  Company  does  not  have  any  outstanding  noncontrolling 
interests. The Company plans to adopt SFAS No.  160 on January 1, 2009 and does not expect that the adoption of 
SFAS No. 160 will have a material impact on its consolidated financial position, consolidated results of operations, or 
liquidity. 

In  December  2007,  the  FASB  issued  SFAS  No.  141  (Revised  2007),  Business  Combinations,  (SFAS  No.  141R). 
This new standard applies to all transactions or other events in which an entity obtains control of one or more businesses, 
including those sometimes referred to as “true mergers” or “mergers of equals” and combinations achieved without the 
transfer of consideration. This standard replaces FASB Statement No. 141 and applies to all business entities, including 
mutual entities that previously used the pooling-of-interests method of accounting for some business combinations. The 
Company plans to adopt SFAS No. 141R on January 1, 2009 and will apply the provisions of this standard on a prospective 
basis. The Company does not expect that the adoption of SFAS No. 141R will have a material impact on its consolidated 
financial position, consolidated results of operations, or liquidity. However, prospective business combinations, if any, 
will be significantly impacted by the adoption of SFAS No. 141R. 

In May 2008, the FASB issued SFAS No. 162, The Hierarchy of Generally Accepted Accounting Principles. This 
new  standard  identifies  the  sources  of  accounting  principles  and  the  framework  for  selecting  the  accounting  principles 
used in the preparation of financial statements of nongovernmental entities that are presented in conformity with generally 
accepted accounting principles (GAAP) in the United States. This new standard mandates the GAAP hierarchy reside in 
the accounting literature as opposed to the audit literature. This has the practical impact of elevating FASB Statements of 
Financial Accounting Concepts in the GAAP hierarchy. SFAS No. 162 is effective 60 days after the SEC’s approval of the 
Public Company Accounting Oversight Board amendments to AU Section 411, The Meaning of Present Fairly in Conformity 
with Generally Accepted Accounting Principles. The Company does not believe adoption of this new standard will have a 
material effect on its consolidated financial position, consolidated results of operations, or liquidity. 

In June 2008, the FASB issued the FASB Staff Position (FSP) EITF No. 03-6-1, Determining Whether Instruments 
Granted in Share-Based Payment Transactions are Participating Securities (FSP EITF No. 03-6-1). FSP EITF No. 03-
6-1 requires that unvested share-based payment awards that contain non-forfeitable rights to dividends or dividend 
equivalents  (whether  paid  or  unpaid)  should  be  classified  as  participating  securities  and  should  be  included  in  the 
computation of earnings per share pursuant to the two-class method as described in SFAS No. 128, Earnings per Share. 
FSP EITF No. 03-6-1 is effective for fiscal years, and interim periods within those fiscal years, beginning on or after 
December 15, 2008. The Company plans to adopt FSP EITF No. 03-6-1 on January 1, 2009 and does not expect that 
the adoption of FSP EITF No. 03-6-1 will have a material impact on its consolidated financial position, consolidated 
results of operations, or liquidity. 

F-15

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

3.  ACQUISITIONS 

On April 3, 2007, the Company completed the acquisition of all of the outstanding shares of Cellex, a development 
stage  enterprise,  for  an  aggregate  cash  purchase  price,  including  acquisition  costs,  of  $46.1  million.  The  results  of 
Cellex’s  operations  have  been  included  in  the  consolidated  financial  statements  since  that  date.  Cellex,  based  in 
Richmond,  British  Columbia,  develops  and  commercializes  fuel  cell  solutions  that  replace  the  industrial  lead  acid 
battery system used today in powering electric lift truck fleets in large-scale distribution centers.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date 

of acquisition.

Current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifiable intangible assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long term liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total liabilities assumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 9,856,529
1,220,580
10,000,000
27,585,632
48,662,741
831,817
1,693,348
2,525,165
$ 46,137,576

The  entire  $10  million  balance  of  intangible  assets  has  been  assigned  to  acquired  technology,  which  is  being 

amortized over 8 years.

On May 4, 2007, the Company completed the acquisition of all of the outstanding shares of General Hydrogen, 
a  development  stage  enterprise,  for  an  aggregate  purchase  price  of  $12.4  million,  including  acquisition  costs.  The 
purchase price includes the settlement of $3 million in senior secured loans previously made by the Company to General 
Hydrogen, as well as 571,429 warrants granted to shareholders of General Hydrogen that were valued at $1.4 million. 
The warrants become exercisable when Plug Power’s Common Stock trades at a volume weighted average price of 
$7.00 or more for 10 consecutive trading days. The warrants carry an exercise price of $.01 per share and expire four 
years from the date of issuance. The results of General Hydrogen’s operations have been included in the consolidated 
financial statements since May 4, 2007. General Hydrogen is located in Richmond, British Columbia, Canada within 
close proximity to Cellex.

The following table summarizes the estimated fair values of the assets acquired and liabilities assumed at the date 

of acquisition.

Current assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Property, plant and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identifiable intangible assets  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Goodwill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Current liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long term liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total liabilities assumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net assets acquired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1,591,492
2,351,941
6,900,000
8,579,469
19,422,902
4,366,229
2,681,356
7,047,585
$ 12,375,317

Of the $6.9 million of intangible assets, $5.9 million has been assigned to acquired technology and $1.0 million 

has been assigned to customer relationships, both of which are being amortized over 8 years.

F-16

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The  gross  carrying  amount  and  accumulated  amortization  of  the  Company’s  acquired  identifiable  intangible 

assets as of December 31, 2008 are as follows:

Acquired Technology . . . . . . . . .
Customer Relationships . . . . . . .

Weighted Average 
Amortization 
Period
8 years
8 years

Gross Carrying 
Amount
$15,900,000
1,000,000
$16,900,000

Accumulated 
Amortization
$(3,630,724)
(208,333)
$ (3,839,057)

Effect of 
Foreign Currency 
Translation
$(217,761)
—
$(217,761)

Total
$ 12,051,515
791,667
$12,843,182

Amortization expense for acquired identifiable intangible assets for the year ended December 31, 2008, was $2.2 

million. Estimated amortization expense for subsequent years is as follows:

2009  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$ 2,224,954
2,224,954
2,224,954
2,224,954
2,224,954
1,718,412
$12,843,182

4. 

FAIR VALUE MEASUREMENTS

The  Company  adopted  SFAS  No.  157,  Fair  Value  Measurements  on  January  1,  2008,  for  financial  assets  and 
financial liabilities. SFAS No. 157 defines fair value, provides guidance for measuring fair value, and requires certain 
disclosures. Financial Accounting Standards Board Staff Position (FSP) No. 157-2 amends SFAS No. 157 to delay the 
effective date of the application of SFAS No. 157 to fiscal years beginning after November 15, 2008 for all nonfinancial 
assets  and  nonfinancial  liabilities.  Nonfinancial  assets  and  nonfinancial  liabilities  for  which  the  Company  has  not 
applied the provisions of SFAS No. 157 include those measured at fair value in goodwill impairment testing. 

SFAS No. 157 discusses valuation techniques, such as the market approach (comparable market prices), the income 
approach (present value of future income or cash flow), and the cost approach (cost to replace the service capacity of an 
asset or replacement cost). The statement utilizes a fair value hierarchy that prioritizes the inputs to valuation techniques 
used to measure fair value into three broad levels. The following is a brief description of those three levels: 

Level  1  Inputs  –  Level  1  inputs  are  unadjusted  quoted  prices  in  active  markets  for  assets  or  liabilities 
identical to those to be reported at fair value. An active market is a market in which transactions occur for the item 
to be fair valued with sufficient frequency and volume to provide pricing information on an ongoing basis.

Level 2 Inputs – Level 2 inputs are inputs other than quoted prices included within Level 1. Level 2 inputs 
are observable either directly or indirectly. These inputs include: (a) Quoted prices for similar assets or liabilities 
in active markets; (b) Quoted prices for identical or similar assets or liabilities in markets that are not active, 
such as when there are few transactions for the asset or liability, the prices are not current, price quotations vary 
substantially  over  time  or  in  which  little  information  is  released  publicly;  (c)  Inputs  other  than  quoted  prices 
that are observable for the asset or liability; and (d) Inputs that are derived principally from or corroborated by 
observable market data by correlation or other means. 

Level 3 Inputs – Level 3 inputs are unobservable inputs for an asset or liability. These inputs should be used 
to determine fair value only when observable inputs are not available. Unobservable inputs should be developed 
based on the best information available in the circumstances, which might include internally generated data and 
assumptions being used to price the asset or liability. 

When determining the fair value measurements for assets or liabilities required or permitted to be recorded at and/
or marked to fair value, the Company considers the principal or most advantageous market in which it would transact and 
considers assumptions that market participants would use when pricing the asset or liability. When possible, the Company 

F-17

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

looks to active and observable markets to price identical assets. When identical assets are not traded in active markets, 
the Company looks to market observable data for similar assets. Nevertheless, certain assets are not actively traded in 
observable markets and the Company must use alternative valuation techniques to derive a fair value measurement. 

The following table summarizes the bases used to measure certain financial assets at fair value on a recurring 

basis in the consolidated balance sheet: 

Basis of Fair Value Measurements 

Quoted Prices in Active 
Markets for Identical 
Items 
(Level 1)

Significant  
Other Observable  
Inputs 
(Level 2)

Total

Balance at December 31, 2008
Trading securities – auction rate 
debt securities . . . . . . . . . . . .
Available-for-sale securities . . . .
Auction rate debt securities 

$52,650,654
$ 23,843,950

—
$
$23,843,950

repurchase agreement . . . . . .

$10,224,346

$

—

$ —
$ —

$ —

Significant 
Unobservable 
Inputs 
(Level 3)

$52,650,654
—
$

$10,224,346

The following tables show reconciliations of the beginning and ending balances for assets measured at fair value 

on a recurring basis using significant unobservable inputs (i.e. Level 3): 

Beginning of period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfers into Level 3 – auction rate debt securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Other than temporary impairment charge on auction rate debt securities included in the 

Fair Value 
Measurements Using 
Significant 
Unobservable Inputs
—   

$
  62,875,000 

consolidated statements of operations for the twelve months ended December 31, 2008 . . . . .
Fair value of trading securities - auction rate debt securities at December 31, 2008  . . . . . . . . . . .

  (10,224,346)
$ 52,650,654 

Beginning of period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfers into level 3  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fair value of auction rate debt securities repurchase agreement  

Fair Value 
Measurements Using 
Significant 
Unobservable Inputs

$
  10,224,346  

— 

at December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$10,224,346  

The following summarizes the valuation technique for assets measured and recorded at fair value: 

Available-for-sale securities: For our level 1 securities, which represent Federal treasury securities, fair value is 

based on quoted market prices. 

Trading  securities  –  auction  rate  debt  securities  and  auction  rate  debt  securities  repurchase  agreement:  The 
securities  valued  using  unobservable  inputs  were  the  auction  rate  debt  securities  and  auction  rate  debt  securities 
repurchase agreement as the financial and capital markets have experienced significant dislocation and illiquidity in 
regard to these types of instruments and there is currently no secondary market for these types of securities. There have 
been no successful auctions since early 2008. The valuation of these auction rate debt securities and auction rate debt 
securities repurchase agreement is an estimate based upon factors specific to these securities, including duration, tax 
status (taxable or tax-exempt), credit quality, the existence of insurance wraps, and the composition of the underlying 
student loans (Federal Family Education Loan Program or private loans). Assumptions were made about future cash 

F-18

 
 
 
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

flows  based  upon  interest  rate  formulas  as  described  above.  Also,  the  valuation  included  estimates  of  market  data 
including yields or spreads of similar trading instruments, when available, or assumptions believed to be reasonable for 
non-observable inputs such as likelihood of redemption. Actual transactions involving these securities and/or future 
valuations could differ from the estimated fair value of these securities at December 31, 2008. 

5.  AVAILABLE-FOR-SALE SECURITIES

The amortized cost and estimated fair value of the Company’s available-for-sale securities as of December 31, 

2008 were as follows:

U.S. Treasury Securities . . . . . . . . . . . . . . . . .  

$ 23,616,845  

Amortized 
Cost

Gross Unrealized 
Gains
$ 227,105

Gross Unrealized 
Losses
$ — 

Estimated 
Fair Value
  $23,843,950

The amortized cost and estimated fair value of the Company’s available-for-sale securities as of December 31,  

2007 were as follows:

Corporate Debt Securities  . . . . . . . . . . . . . . .  
Auction Rate Debt Securities . . . . . . . . . . . . .  
Government Agency Securities . . . . . . . . . . .  

Amortized 
Cost

Gross Unrealized 
Gains

$ 51,777,800  
  92,775,000  
8,999,453  
$153,552,253  

$125,490  
  12,120  
2,437  
$140,047  

Gross Unrealized 
Losses
$(56,580)
— 
  (12,050)
$(68,630)

Estimated 
Fair Value
  $ 51,846,710
    92,787,120
8,989,840
  $ 153,623,670

The  auction  rate  debt  securities  are  collateralized  by  student  loan  debt  securities  issued  by  various  states,  in 
the  United  States,  or  state  agencies.  These  auction  rate  debt  securities  are  structured  to  be  tendered  at  par,  at  the 
option of the investor, at auctions occurring every 27-30 days. The auctions that occurred in January of 2008 were 
successful.  However,  the  recent  disruption  in  the  financial  and  capital  markets  has  resulted  in  reduced  liquidity  of 
these auction rate debt securities and increased the liquidity risk associated with these securities as the auctions that 
have occurred beginning in February 2008 have not been successful. Each of the auction rate debt securities includes 
contractual provisions to deal with these events. The Company will continue to receive interest income on these debt 
securities; however, the interest rates will be at the maximum rate defined for each security. The default interest rates 
will be received until there is a successful auction or the Company sells these securities in the open market. As of 
December 31, 2008, these securities have been reclassified to trading securities and have been pledged as collateral for 
a Credit Line Agreement entered into by the Company with a third-party lender in December 2008. Prior to the transfer 
of these securities to trading securities in December 2008, the Company recorded other than temporary impairment 
charges on these securities of $10,224,346. There were no significant changes in the fair value of these securities from 
the time of their transfer into trading securities in December 2008 through December 31, 2008. 

There were no unrealized losses in the securities available-for-sale securities portfolio at December 31, 2008. The 

contractual maturities of securities available-for-sale securities are all in the year ended December 31, 2009. 

The following are estimated fair values and unrealized losses of the Company’s available-for-sale securities that 

were in an unrealized loss position as of December 31, 2007:

Less than 12 months

More than 12 months

Corporate Debt Securities  . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Government Sponsored Enterprise Securities . . . . . . . . . . . .  

Estimated 
Fair Value

Unrealized 
Losses

$ 9,822,341   $(40,236) 
  4,987,950     (12,050) 
$14,810,291   $(52,286) 

F-19

Unrealized 
Losses

Estimated 
Fair Value
$ 5,088,140   $(16,344)
—  
$ 5,088,140   $(16,344)

— 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
 
 
 
 
 
 
 
   
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The above table represents 7 securities where the current estimated fair value was less than the related amortized 
cost  at  December  31,  2007.  These  unrealized  losses  do  not  reflect  any  deterioration  of  the  credit  worthiness  of  the 
issuers of the securities and are not considered to be other than temporary. All securities are of investment grade. 

The Company recognized gross gains, gross losses and proceeds on available-for-sale securities for each of the 

years ended December 31 as follows:

Proceeds on sales  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Proceeds on maturities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Gross realized gains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Gross realized losses  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

2008

2007
$ 159,849,925   $ 24,859,823   $ 29,284,989
  106,924,255     531,780,745     823,683,523
80,318
12,396

404,074    
14,890    

162,890    
45,227    

2006

6. 

PROPERTY, PLANT AND EQUIPMENT 

Property, plant and equipment at December 31, 2008 and 2007 consist of the following:

Land  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Building improvements  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Software, machinery and equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Less accumulated depreciation and amortization  . . . . . . . . . . . . . . . . . . . . . . . . . . .  
Property, plant, and equipment, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

December 31, 
2008

$
90,000 
  14,557,080 
8,615,636 
  29,779,651 
  53,042,367 
  (35,272,393)
$ 17,769,974 

December 31, 
2007
  $
90,000 
    14,557,080 
    8,580,001 
    29,147,823 
    52,374,904 
    (31,310,109)
  $ 21,064,795 

Depreciation expense was $4.4 million, $3.7 million and $3.1 million for the years ended December 31, 2008, 
2007 and 2006, respectively, and was included in research and development and selling, general and administrative 
expenses on the accompanying consolidated statements of operations.

7.  GOODWILL AND OTHER INTANGIBLE ASSETS 

Goodwill is tested for impairment annually or more frequently when events or circumstances indicate that the 
carrying  value  more  likely  than  not  exceeds  its  fair  value.  As  a  result  of  the  uncertain  economic  environment  in 
general and the decline in our stock price during the fourth quarter of 2008, indicative of a potential devaluation of 
the Company’s assets, the Company performed a goodwill impairment assessment under SFAS 142. As a result of this 
assessment, the Company has determined that a goodwill impairment has occurred and has recorded an impairment 
charge of $45.8 million.

The  test  for  goodwill  impairment,  as  defined  by  SFAS  No.  142  is  a  two-step  approach.  The  first  step  of  the 
goodwill impairment test requires a determination of whether or not the fair value of goodwill is less than its carrying 
value. If so, the second step is required, which involves an analysis reflecting the allocation of the fair value determined 
in the first step (as if it was the purchase price in a business combination). This process may result in the determination 
of a new amount of goodwill. If the calculated fair value of the goodwill resulting from this allocation is lower than 
the carrying value of the goodwill in the reporting unit, the difference is reflected as a non-cash impairment loss. The 
purpose of the second step is only to determine the amount of goodwill that should be recorded on the consolidated 
balance sheet. The recorded amounts of other items on the consolidated balance sheet are not adjusted.

We estimate the fair value of our single reporting unit using “market” and “income” valuation approaches. The 
“market”  valuation  approach  estimates  our  enterprise  value,  which  is  comprised  of  our  market  capitalization.  The 
“income” valuation approach estimates our enterprise value using a net present value model, which discounts projected 
free cash flows (DCF) of our business at a computed weighted average cost of capital as the discount rate. 

F-20

 
 
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

In  the  fourth  quarter  of  2008,  as  a  result  of  completing  the  first  step  of  the  goodwill  impairment  test,  we 
determined that the carrying value of our goodwill exceeded its fair value, which required us to perform the second 
step of the goodwill impairment test. The second step of the goodwill impairment test, which included consideration of 
the Company’s market capitalization as well as discounted cash flow projections and estimations of the fair values of 
identified assets and liabilities and intangible assets with estimated useful lives, indicated that goodwill was impaired 
and  we  recorded  a  non-cash  goodwill  impairment  charge  of  $45.8  million,  all  of  which  is  classified  as  goodwill 
impairment in the accompanying 2008 consolidated statement of operations. 

The  carrying  amount  of  goodwill  and  changes  in  the  carrying  amount  of  goodwill  for  the  year  ended 

December 31, 2008, were as follows:

Goodwill at December 31, 2007 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Increase related to tax purchase accounting adjustment . . . . . . . . . . . . 
Goodwill impairment charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Impact of foreign currency translation . . . . . . . . . . . . . . . . . . . . . . . . . . 
Goodwill at December 31, 2008 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

$ 51,399,497
1,017,641 
  (45,842,656)
(6,574,482)
—

$

Intangible  assets  consisting  of  acquired  technology  and  customer  relationships  related  to  Cellex  and  General 
Hydrogen  are  amortized  using  a  straight-line  method  over  their  useful  lives  of  8  years.  Amortization  expense  for 
acquired intangible assets during the years ended December 31, 2008, 2007 and 2006 was $2.2 million, $1.6 million, 
and $0, respectively. Amortization related to the assets acquired as part of Cellex and General Hydrogen is described 
more fully in Note 3, Acquisitions.

Identifiable intangible assets which have indefinite lives are tested at least annually for impairment. As a result 
of the uncertain economic environment in general and the decline in our stock price during the fourth quarter of 2008, 
the Company performed an impairment assessment in accordance with SFAS No. 144 as of December 31, 2008 and has 
determined that no impairment exists.

8.  CREDIT LINE AGREEMENT AND AUCTION RATE DEBT SECURITIES REPURCHASE AGREEMENT

In December 2008, the Company entered into a Credit Line Agreement with a third-party lender with a maximum 
availability of $62.9 million. As of December 31, 2008, the Company has drawn down $62.9 million on this line of 
credit. The Company’s auction rate debt securities included in trading securities on the consolidated balance sheets are 
pledged as collateral for the Credit Line Agreement. The fair value of the auction rate debt securities is $52.7 million 
at December 31, 2008. The Credit Line Agreement bears interest at a variable rate equal to the average rate of interest 
earned by the Company on the auction rate debt securities pledged as collateral for the Credit Line Agreement. The 
interest rate on the line of credit advances was 2.4% at December 31, 2008. Interest accrued on the advances on the 
Credit Line Agreement between its origination in December 2008 through December 31, 2008 was not significant.

The advances on the Credit Line Agreement is repayable on demand by the third-party lender. If the third-party 
lender exercises its right to demand repayment of the advances under the Credit Line Agreement prior to June 30, 2010 
(the date upon which the Company can first exercise its rights under the Repurchase Agreement discussed below), 
the third-party lender is required to arrange alternative financing on terms substantially the same as the Credit Line 
Agreement or the third party lender must repurchase the auction rate debt securities pledged as collateral for the Credit 
Line Agreement at their par value, which is $62.9 million at December 31, 2008.

In December 2008, the Company also entered into a Repurchase Agreement with the third-party lender such that 
the Company may require the third-party lender to repurchase the auction rate debt securities pledged as collateral 
for the Credit Line Agreement, at their par value, from June 30, 2010 through July 2, 2012 as full settlement for the 
advances on the Credit Line Agreement. The Company has elected to record this item at its fair value in accordance 
with SFAS No. 159. At December 31, 2008 the fair value of this item is approximately $10.2 million and is recorded 
as an asset on the consolidated balance sheets and as a gain on the consolidated statements of operations. The change 
in the fair value of the Repurchase Agreement between its origination in December 2008 through December 31, 2008 
was not significant.

F-21

 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

9.  ACCRUED EXPENSES 

Accrued expenses at December 31, 2008 and 2007 consist of:

Accrued payroll and compensation related costs . . . . . . . . . . . . . . . . . .  
Accrued restructuring costs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Other accrued liabilities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

2008

2007

$ 2,694,177   $ 1,729,424
  4,393,085    
— 
  2,858,054     3,780,380
$ 9,945,316   $5,509,804

10.  REPAYABLE GOVERNMENT ASSISTANCE

During the year ended December 31, 2000, the Company’s wholly-owned subsidiary, Plug Power Canada Inc., 
formerly  known  as  Cellex  Power  Products  Inc.,  entered  into  an  Industrial  Research  Assistance  Program  (IRAP) 
Repayable  Contribution  Agreement  with  the  National  Research  Council  of  Canada  (NRC)  under  which  it  received 
contributions  totaling  Cdn$500,000  for  certain  development  activities.  The  agreement  with  the  NRC  provides  for 
payment  of  royalties  of  up  to  170%  of  the  contributions  received  subject  to  certain  conditions,  payable  quarterly, 
calculated at 3.5% of gross revenues. Plug Power Canada’s repayment obligation to the NRC exists from July 1, 2002 
to March 31, 2009. If by April 1, 2009, the total amount repaid to the NRC is less than the Cdn$500,000 contribution, 
then Plug Power Canada will continue to make the payments to the NRC until either the full Cdn$500,000 is repaid or 
until July 1, 2012, whichever comes first. The maximum liability under this repayment obligation is Cdn$850,000. If at 
any point Plug Power Canada’s repayments reach this amount, the obligation shall cease. 

The  Company  has  recorded  the  estimate  of  amounts  owed  under  this  arrangement  as  a  debt,  which  includes 
accrued  interest  that  is  determined  based  on  imputed  interest  rates.  Royalty  payments  are  recorded  as  a  reduction 
of the debt. Accordingly, liabilities relating to this agreement, including imputed interest, in the amount of $173,138 
and $369,331, respectively, have been recorded as repayable government assistance and current portion of repayable 
government  assistance  (other  current  liabilities)  in  the  consolidated  balance  sheets  as  of  December  31,  2008  and 
$572,473 and $213,500, respectively, have been recorded as repayable government assistance and current portion of 
repayable government assistance (other current liabilities) in the consolidated balance sheets as of December 31, 2007. 
The imputed interest is recorded as interest expense in the consolidated statement of operations. 

General Hydrogen Corporation and its wholly owned subsidiary General Hydrogen (Canada) Corporation, and 
Cellex  Power  Products,  Inc.  each  entered  into  agreements  with  Technology  Partnerships  Canada  (TPC)  during  the 
year  ended  December  31,  2005  for  the  development  of  early  market  fuel  cell  applications.  On  December  31,  2007, 
General Hydrogen Corporation merged with Plug Power Inc. and, subsequently, Plug Power Inc. contributed the wholly 
owned subsidiary General Hydrogen (Canada) Corporation to Plug Power Canada Inc. On January 1, 2008, General 
Hydrogen (Canada) Corporation, Plug Power Canada Inc. and Cellex Power Products, Inc. amalgamated as Plug Power 
Canada Inc. Under the former Cellex Power Products, Inc.’s TPC agreement (the Cellex TPC Agreement), TPC would 
contribute the lesser of Cdn$9.5 million or 33% of eligible costs incurred during the period July 2004 to June 2009. 
Following the completion of the development project, TPC would be entitled to recover its investment through royalty 
payments of 2.06% of gross revenues during the period January 1, 2010 to December 31, 2017, or until a Cdn$42.2 
million cap is reached, whichever occurred first. If, as of December 31, 2017, the cumulative royalty paid and owing 
had not reached Cdn$28.1 million, royalty payments would continue to be payable until Cdn$28.1 million was reached 
or until December 31, 2027, whichever occurred first. Under the former General Hydrogen Corporation and General 
Hydrogen  (Canada)  Corporation’s  TPC  agreement  (the  General  Hydrogen  TPC  Agreement),  TPC  would  contribute 
the  lesser  of  Cdn$9.0  million  or  32%  of  eligible  costs  incurred  though  June  2008.  Following  the  completion  of  the 
development project, TPC would be entitled to recover its investment through royalty payments of 1.98% of revenues 
during the period January 1, 2009 to December 31, 2016. If, as of December 31, 2016, the cumulative royalty paid and 
owing has not reached Cdn$22.9 million, royalty payments would continue to be payable until Cdn$22.9 million was 
reached or until December 31, 2026, whichever occurred first. 

F-22

 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

On  September  30,  2008  Plug  Power  Inc.,  Plug  Power  Canada  Inc.,  and  TPC  entered  into  Assumption  and 
Termination Agreements related to both the Cellex TPC Agreement and the General Hydrogen TPC Agreement. In 
consideration of the Assumption and Termination Agreements, Plug Power Inc. and Plug Power Canada Inc agreed to 
pay $2,235,244 to TPC. As a result of this agreement, the Company has recorded a gain on the termination of these 
agreements in the amount of $1,232,522 in interest and other income and net realized gains from available-for-sale 
securities in the consolidated statement of operations for 2008.

A  liability,  including  imputed  interest,  in  the  amount  of  $3,815,890  was  recorded  as  repayable  government 
assistance in the consolidated balance sheets as of December 31, 2007. The imputed interest is recorded as interest 
expense in the consolidated statement of operations. 

11.  RESTRUCTURING CHARGES 

On June 10, 2008, the Company adopted a restructuring plan to become a market and sales driven organization. 
The Company has refocused on the GenDrive motive power product where there has been significant customer interest 
in fuel cell power units. As part of the restructuring, the Company has reduced its workforce, cut back discretionary 
spending,  and  deferred  non  strategic  projects.  As  a  result  of  the  reduced  workforce  and  contract  cancellation,  the 
Company  recorded  restructuring  charges  in  the  amount  of  $3,744,801  within  selling,  general  and  administrative 
expenses in the consolidated statement of operations for 2008. At December 31, 2008, $402,721 remains as accrued 
expenses on the consolidated balance sheet.

The accrued restructuring charges are comprised of the following at December 31, 2008: 

Personnel Related . . . . . . . . . . . . . . . . . . . . . . . . .  
Contract Cancellation . . . . . . . . . . . . . . . . . . . . . .  
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Total Amount Expensed 
Twelve Months Ended 
December 31, 2008
$3,380,701
  364,100
$3,744,801

Total Amount Paid 
Twelve Months Ended 
December 31, 2008
$ 3,342,080
— 
$ 3,342,080

Remaining 
Accrual at 
December 31, 2008
$ 38,621
  364,100
$402,721

On December 18, 2008, the Company adopted a restructuring plan intended to focus the Company on revenue 
growth, improve organizational efficiency and position the Company for long-term profitability. As part of this plan, 
the Company implemented a reduction in workforce by eliminating 90 positions in addition to terminating purchase 
commitments and charging off inventory related to lapsed product lines. As a result, the Company recorded restructuring 
charges in the amount of $3,990,364 within selling, general and administrative expenses and $2,295,370 in cost of 
product and service revenue in the consolidated statement of operations for 2008. At December 31, 2008, $3,990,364 
remains as accrued expenses on the consolidated balance sheet.

The accrued restructuring charges are comprised of the following at December 31, 2008:

Personnel Related . . . . . . . . . . . . . . . . . . . . . . . .  
Purchase Commitment Cancellations  . . . . . . . .  
Inventory Non-Cash Write-Down  . . . . . . . . . . .  
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  

Total Amount Expensed 
Twelve Months Ended 
December 31, 2008
$2,653,597
  1,336,767
  2,295,370
$6,285,734

Total Amount Paid 
Twelve Months Ended 
December 31, 2008
$ — 
  — 
  N/A 
$ — 

Remaining 
Accrual at 
December 31, 2008
$2,653,597
  1,336,767
N/A
$3,990,364

F-23

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

12.  INCOME TAXES

The components of income/(loss) before income taxes for the years ended December 31, 2008, 2007 and 2006 are 

as follows:

Income/(loss) before income taxes:
United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  $ (91,543,000)
(30,157,000)
Foreign  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
  $ (121,700,000)

  $ (55,831,000)
(4,740,000)
  $ (60,571,000)

  $ (50,529,000)
219,000 
  $ (50,310,000)

2008

2007

2006

There was no current income tax expense for the years ended December 31, 2008, 2007 and 2006. The Company 
was  a  Limited  Liability  Company  (LLC)  until  its  merger  into  Plug  Power  Inc.  effective  November  3,  1999.  From 
inception  through  November  3,  1999,  the  Company  was  treated  as  a  partnership  for  federal  and  state  income  tax 
purposes and accordingly the Company’s income taxes or credits resulting from earnings or losses were payable by, or 
accrued to its members. Therefore, no provision for income taxes has been made prior to November 3, 1999.

Since November 3, 1999, the Company is taxed as a corporation for Federal and State income tax purposes and 
the effect of deferred taxes recognized as a result of the change in tax status of the Company have been included in 
operations. Deferred tax assets and liabilities are determined based on the temporary differences between the financial 
statement and tax bases of assets and liabilities as measured by the enacted tax rates.

The significant components of U.S. income tax (benefit) expense for the years ended December 31, 2008, 2007 

and 2006 are as follows:

Deferred tax benefit . . . . . . . . . . . . . . . . . . . . . . . . . . 
Net operating loss carryforward . . . . . . . . . . . . . . . . . 
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . 
Provision for income taxes . . . . . . . . . . . . . . . . . . . . . 

2008
$ (18,983,017)
(9,307,811)
  28,290,828 
—  
$

Years ended December 31,
2007
  $ (3,563,416)
    (18,477,874)
    22,041,290 
—  
  $

2006
  $ (2,615,824)
    (17,361,668)
    19,977,492 
—  
  $

The significant components of foreign income tax (benefit) expense for the years ended December 31, 2008 and 

2007 are as follows:

Deferred tax expense  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net operating loss carryforward, net . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provision for income taxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Year ended 
December 31, 
2008
$ 2,020,310 
786,486 
  (2,806,796)
—  
$

Year ended 
December 31, 
2007
  $
55,170 
    935,484 
    (990,654)
—  
  $

F-24

 
 
 
 
 
   
   
   
   
   
 
 
   
   
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company’s effective income tax rate differed from the Federal statutory rate as follows:

U.S. Federal statutory tax rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Deferred state taxes, net of federal benefit . . . . . . . . . . . . . . . . . . . . . . . 
Other, net  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Goodwill impairment charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Change in foreign tax rate  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Expiring net operating loss carryforward  . . . . . . . . . . . . . . . . . . . . . . . 
Adjustment to opening deferred tax balance . . . . . . . . . . . . . . . . . . . . . 
Tax credits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 
Change in valuation allowance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

2008 

Years ended December 31,
2007 
2006 
(35.0)%   (35.0)%   (35.0)%
(2.8)
(1.8)
  — 
0.1 
 — 
12.3 
  2.6 
0.8 
  2.4 
0.7 
(0.4)
0.8 
(1.6)
(0.3)
  34.8 
22.4 

(3.0)
.8 
 — 
  — 
.3 
.7 
(3.0)
  39.2 

0.0%  

0.0%  

0.0%

Deferred  income  taxes  reflect  the  net  tax  effects  of  temporary  differences  between  the  carrying  amounts  of 
certain assets and liabilities for financial reporting and the amounts used for income tax expense purposes. Significant 
components of the Company’s deferred tax assets and liabilities as of December 31, 2008 and 2007 are as follows:

Deferred tax assets and liabilities:

Intangible assets. . . . . . . . . . . . . . . . . . .
Non-employee stock-based 

U.S. 
Years ended December 31,
2007
2008

Foreign 
Years ended December 31,
2007
2008

$

(2,023,365)

  $

(1,955,220)

  $ (1,823,521)

  $ (2,655,111)

compensation . . . . . . . . . . . . . . . . . .

(500,642) 

320,956 

Gain on auction rate debt securities 

repurchase agreement. . . . . . . . . . . .

(3,885,251)

 —  

—  

—  

— 

— 

Impairment loss on available  

for sale securities . . . . . . . . . . . . . . .
Deferred revenue . . . . . . . . . . . . . . . . . .
Other reserves and accruals. . . . . . . . . .
Capital loss carryforwards. . . . . . . . . . .
Tax credit carryforwards . . . . . . . . . . . .
Property, plant and equipment . . . . . . . .
Amortization of stock-based 

3,885,251 
2,058,774 
1,792,292 
5,883,889 
9,858,749 
124,061 

 —  
1,250,299 
205,319 
6,768,435 
9,436,309 
874,982 

—  
—  
44,049 
—  
    1,209,903 
541,233 

— 
— 
139,491 
— 
    1,500,710 
279,784 

compensation . . . . . . . . . . . . . . . . . .

6,603,377 

3,873,037 

—  

— 

Research and development  

expenditures . . . . . . . . . . . . . . . . . . .
Repayable government assistance . . . . .
Net operating loss  . . . . . . . . . . . . . . . . .

15,960,000 
—  
  188,726,938 

—  
—  
179,419,127 

    3,309,462 
141,042 
    3,024,891 

5,891,782 
    1,198,190 
    4,655,275 

Total deferred tax assets  

and liabilities. . . . . . . . . . . . . . . .
Less valuation allowances . . . . . . . .

  228,484,073 
  (228,484,073)

    200,193,244 
    (200,193,244)

    6,447,059 
    (6,447,059)

    11,010,121 
    (11,010,121)

Net deferred tax assets  

and liabilities  . . . . . . . . . . . . . . . . . .

$

—  

  $

—  

  $

—  

  $

— 

The Company has recorded a valuation allowance, as a result of uncertainties related to the realization of its net deferred 
tax asset, at December 31, 2008 and 2007 of approximately $234.9 million and $211.2 million, respectively. The increase of 
the valuation allowance of approximately $23.7 million during 2008 relates to an $8.5 million increase from current year net 
operating losses and $19.2 million from deferred tax assets other than net operating losses. These amounts are offset in part 
by a decrease of $1.8 million as result of foreign currency fluctuation and $2.2 million due to current year change of deferred 
tax assets as a result of FIN 48. 

F-25

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
   
   
 
 
   
   
   
 
   
   
   
 
   
   
   
 
   
   
   
 
   
   
   
 
   
   
   
 
   
 
   
   
   
 
   
   
   
 
   
   
 
   
   
   
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The deferred tax assets have been offset by a full valuation allowance because it is more likely than not that the tax 
benefits of the net operating loss carryforwards and other deferred tax assets may not be realized. Included in the valuation 
allowance as of December 31, 2008 are $14.3 million of deferred tax assets resulting from the exercise of employee stock 
options, which upon subsequent realization of the tax benefits, will be allocated directly to paid-in capital. Included in the 
valuation allowance as of December 31, 2008 are $13.6 million of acquired deferred tax assets.

At December 31, 2008, the Company has unused Federal and State net operating loss carryforwards of approximately 
$602 million, of which $78.6 million was generated from the operations of H Power during the period May 31, 1989, 
through  the  date  of  the  H  Power  acquisition,  $2.7  million  was  generated  by  Cellex  through  the  date  of  the  Cellex 
acquisition, $44.1 million was generated by General Hydrogen through the date of the General Hydrogen acquisition, 
and $476.6 million was generated by the Company during the period November 3, 1999 through December 31, 2008. 
The  net  operating  loss  carryforwards  if  unused  will  expire  at  various  dates  from  2009  through  2028.  In  2008,  net 
operating loss carryforwards of $1,054,000 acquired as part of the H Power transaction expired.

Under Section 382 of the Internal Revenue Code, the use of loss carryforwards may be limited if a change in 
ownership of a company occurs. In 2007, the Company had determined that due to transactions involving the Company’s 
shares owned by significant shareholders, a change of ownership had occurred under the provisions of IRC Section 382. 
As the result of the prior year ownership change, approximately $481 million of the $602 million of net operating losses 
are subject to IRC Section 382 limitations and as the result of IRC Section 382 limitations, approximately $53.7 million 
of the net operating losses acquired from H Power will expire prior to utilization, and approximately $27 million of the 
net operating losses acquired from General Hydrogen will expire prior to utilization. Additionally, approximately $25 
million of H Power’s remaining net operating loss represent a FIN 48 unrecognized tax benefit. As the result of the IRC 
Section 382 limitations and the unrecognized tax benefits, these net operating losses are not reflected in the Company’s 
deferred tax asset as of December 31, 2008.

At  December  31,  2008,  the  Company  has  Federal  capital  loss  carryforwards  of  approximately  $15.5  million 
available to offset future capital gains that will expire at various dates from 2009 through 2011. At December 31, 2008, 
the  Company  has  US  Federal  Research  and  Experimentation  credit  carryforwards  of  approximately  $15.5  million 
available to offset future income tax that will expire at various dates from 2020 through 2028. Approximately $5.7 
million of the Company’s Research and Experimentation carryforwards represent an unrecognized tax benefit and are 
therefore, not reflected in the Company’s deferred tax asset as of December 31, 2008.

At  December  31,  2008,  the  Company  has  unused  foreign  net  operating  loss  carryforwards  of  approximately 
$14.7 million. The net operating loss carryforwards if unused will expire at various dates from 2009 through 2028. 
At December 31, 2008, the Company has Scientific Research and Experimental Development expenditures of $18.3 
million available to offset future taxable income. These expenditures have no expiry date. At December 31, 2008, the 
Company has Canadian investment tax credit (ITC) carryforwards of $1.9 million available to offset future income 
tax.  These  credit  carryforwards  if  unused  will  expire  at  various  dates  from  2009  through  2026.  Approximately  $3 
million of the net operating loss carryforwards, $5.6 million of the Scientific Research and Experimental Development 
expenditures  and  $701,000  of  the  Canadian  ITC  credit  carryforwards  represent  unrecognized  tax  benefits  and  are 
therefore, not reflected in the Company’s deferred tax asset as of December 31, 2008.

The Company intends to reinvest indefinitely any of its unrepatriated foreign earnings. The Company has not 
provided for US income taxes on these undistributed earnings of its foreign subsidiaries because management considers 
such earnings to be reinvested indefinitely outside of the U.S. If the earnings were distributed, the Company may be 
subject to both foreign withholding taxes and U.S. income taxes that may not be fully offset by foreign tax credits. 
Determination of the amount of this unrecognized deferred income tax liability is not practical.

F-26

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company adopted the provisions of FIN 48 on January 1, 2007. A reconciliation of the beginning and ending 

amount of unrecognized tax benefits is as follows:

Unrecognized tax benefits balance at beginning of year . . . . . . . . . . . . .
Additions for tax positions of prior years . . . . . . . . . . . . . . . . . . . . . . . . .
Reductions based on tax positions related to the current year . . . . . . . . .
Reductions for tax positions of prior years  . . . . . . . . . . . . . . . . . . . . . . .
Settlements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Currency translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unrecognized tax benefits balance at end of year . . . . . . . . . . . . . . . . . .

2008
$16,119,790
  2,518,182

2007
$15,200,161
866,762
(23,485)
—
—
76,352
$ 16,119,790

—  
—  
—  

(488,847)
$18,149,125 

As a result of the implementation of FIN 48, the Company recognized $0 increase in the liability for unrecognized 
tax benefits. During the year ended December 31, 2008, the Company did not recognize any additional tax liabilities 
related to uncertain tax positions.

The Company recognizes accrued interest and penalties related to unrecognized tax benefits as a component of 
income tax expense. This accounting policy did not change as a result of the adoption of FIN 48. During the year ended 
December 31, 2008, the Company recognized $1.0 million in interest and penalties. The Company had $1.0 million in 
interest and penalties accrued at December 31, 2008. This amount related to purchase accounting and was allocated 
directly to goodwill.

The Company files income tax returns in the U.S. federal jurisdiction and various state and foreign jurisdictions. 
In the normal course of business the Company is subject to examination by taxing authorities. Open tax years in the 
U.S. range from 2005 to 2008. Open tax years in the foreign jurisdictions range from 2002 to 2008. However, upon 
examination in subsequent years, if net operating losses carryforwards and tax credit carryforwards are utilized, the 
U.S. and foreign jurisdictions can reduce net operating loss carryforwards and tax credit carryforwards utilized in the 
year being examined if they do not agree with the carryforward amount. As of December 31, 2008, the Company was 
not under audit in the U.S. or non-U.S. taxing jurisdictions. No significant changes to the amount of unrecognized tax 
benefits are anticipated within the next twelve months.

13.  STOCKHOLDERS’ EQUITY

From inception through December 31, 2008, our stockholders in the aggregate have contributed $636.3 million in 
cash, net of issuance costs, to the Company, including a net $214.4 million as a result of our June 29, 2006 transaction 
with Smart Hydrogen Inc. (the Buyer). The Company sold 395,000 shares of Class B Capital Stock, a class of preferred 
stock of the Company, which were convertible into 39,500,000 shares of common stock of the Company, and 11,240 
shares of common stock of the Company to the Buyer. 

In December 2008, Smart Hydrogen Inc. sold to OJSC (Third Generation Company of the Wholesale Electricity 
Market) (OGK-3) all 395,000 shares of the Company’s Class B Capital Stock as well as 5,126,939 shares of the Company’s 
common stock. This sale triggered the automatic conversion of the Company’s Class B Capital Stock into 39,500,000 
shares of common stock, and the termination of all the rights and obligations attached to the Class B Capital Stock. 
The rights and obligations attached to the Class B Capital Stock that terminated included, but were not limited to, the 
right to appoint directors, veto rights and voting support obligations under the Investor Rights Agreement dated as of 
June 29, 2006, as amended (the Investor Rights Agreement). OGK-3 has executed a joinder agreement to the Investor 
Rights Agreement and is prohibited from transferring its shares of the Company’s Common Stock to a competitor of 
the Company. OGK-3 is also bound by the same standstill provisions that applied to Smart Hydrogen, as set forth in the 
Investor Rights Agreement. This transfer and conversion triggered a change of control pursuant to Section 17 of our 
1999 Stock Option and Incentive Plan; and, therefore, each outstanding Stock Option Right automatically became fully 
exercisable and conditions and restrictions on each outstanding Restricted Stock Award, Deferred Stock Award and 
Performance Share Award that relates solely to the passage of time and continued employment were removed.  

F-27

 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Preferred Stock

The  Company  has  authorized  5.0  million  shares  of  preferred  stock,  par  value  $.01  per  share.  The  Company’s 
certificate of incorporation provides that shares of preferred stock may be issued from time to time in one or more 
series. The Company’s Board of Directors is authorized to fix the voting rights, if any, designations, powers, preferences, 
qualifications, limitations and restrictions thereof, applicable to the shares of each series. As of December 31, 2008, 
there were no shares of preferred stock issued and outstanding.

Common Stock

The Company has one class of common stock, par value $.01 per share. Each share of the Company’s common 
stock is entitled to one vote on all matters submitted to stockholders. As of December 31, 2008 there were 128,164,003 
shares of common stock issued and outstanding.

The following represents changes in stockholders’ equity since inception.

No. of 
Preferred 
Shares

No. of  
Common 
Shares

No. of 
Treasury 
Shares

Cash 
Contribution

Noncash  
Contribution

Total 
Capital 
Contribution

Accumulated 
Other 
Comprehensive 
Income (Loss)

Deficit  
Accumulated  
During the  
Development 
Stage

Treasury 
Stock

Total  
Stockholders’ 
Equity

 — 

 — 

—  $

 — 

$

 — 

$

 — 

$

 —  $

(5,903,340) $

 —  $

(5,903,340)

 — 

4,750,000 

— 

4,750,000 

— 

4,750,000 

 — 
 — 

4,750,000 
9,500,000 

 — 

 — 

— 
— 

— 

— 

 — 
4,750,000 

4,750,000 (a)
4,750,000 

4,750,000 
9,500,000 

 — 

7,750,000 

— 

— 

— 

7,750,000 

Company . . . . . .

 — 

4,950,000 

 — 

2,700,000 

— 

3,000,000 

550,000(a)

3,550,000 

— 

— 
— 

— 

— 

— 

 — 

— 

4,750,000 

 — 
(5,903,340)

(9,615,963)

— 

— 

— 
— 

— 

— 

4,750,000 
3,596,660 

(9,615,963)

7,750,000 

— 

3,550,000 

1997
Net Loss  . . . . . . . . . .
DTE Energy 

Company 
(Issuance at 1.00 
per share) . . . . . .

Mechanical 

Technology 
Incorporated  . . .

1998
Net Loss  . . . . . . . . . .
DTE Energy 

Mechanical 

Technology 
Incorporated  . . .

Stock based 

compensation 
and other 
noncash 
transactions . . . .

 — 
 — 

 — 
7,650,000 

— 
— 

 — 
10,750,000 

212,000 (c)
762,000 

212,000 
11,512,000 

— 
— 

— 
(9,615,963)

— 
— 

212,000 
1,896,037 

F-28

 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

No. of 
Preferred 
Shares

No. of  
Common 
Shares

No. of 
Treasury 
Shares

Cash 
Contribution

Noncash  
Contribution

Total 
Capital 
Contribution

Accumulated 
Other 
Comprehensive 
Income (Loss)

Deficit  
Accumulated  
During the  
Development 
Stage

Treasury 
Stock

Total  
Stockholders’ 
Equity

1999
Net Loss  . . . . . . . . . .
Edison Development 
Corporation . . . .

Mechanical 

Technology 
Incorporated  . . .

General Electric 

— 

 — 

— 

 — 

 — 

 4,004,315 

— 

28,697,782 

— 

— 

— 

28,697,782 

 — 

 6,254,315 

— 

24,000,000 

8,897,782 (a)

32,897,782 

Company . . . . . .

— 

 5,250,000 

— 

37,500,000 

11,250,000 (b)

48,750,000 

Other private 

investors . . . . . . .

 — 

 3,549,850 

— 

25,045,000 

Initial public 

offering-net . . . .

 — 

 6,782,900 

 — 

92,971,878 

Stock option 

exercises  . . . . . .

 — 

24,128 

 — 

41,907 

— 

— 

— 

25,045,000 

92,971,878 

41,907 

— 

— 

— 

— 

— 

— 

— 

(33,469,312)

— 

(33,469,312)

— 

— 

— 

— 

— 

— 

— 

28,697,782 

— 

32,897,782 

— 

48,750,000 

— 

25,045,000 

— 

92,971,878 

— 

41,907 

Stock based 

compensation 
and other 
noncash 
transactions . . . .

2000
Net Loss  . . . . . . . . . .
Stock option 

exercises  . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock issued for 
development 
agreement  . . . . .

Stock issued for 
equity in 
affiliate  . . . . . . .

Stock based 

compensation 
and other 
noncash 
transactions . . . .

 — 
 — 

 — 
25,865,508 

 — 
 — 

 — 
208,256,567 

978,800(c)

21,126,582 

978,800 
229,383,149 

— 
— 

— 
(33,469,312)

— 
— 

978,800 
195,913,837 

 — 

 — 

 — 

632,378 

— 

— 

 — 

3,793,028 

— 

 32,717 

— 

 408,452 

— 

— 

— 

 3,793,028 

 408,452 

 — 

104,869 

 — 

 7,000 

— 

— 

 — 

5,000,000 (d)

5,000,000 

 — 

827,750 (e)

 827,750 

 — 

— 

(86,241,899)

 — 

(86,241,899)

 — 

 — 

— 

 — 

— 

 — 

 3,793,028 

 — 

 — 

408,452 

 — 

 — 

 5,000,000 

 — 

 — 

 827,750 

 — 
 — 

 3,041 
780,005 

— 
— 

 — 
4,201,480 

8,936,779 (c)

 14,764,529 

 8,936,779 
18,966,009 

 — 
 — 

— 
(86,241,899)

 — 
 — 

 8,936,779 
(67,275,890)

F-29

 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

No. of 
Preferred 
Shares

No. of  
Common 
Shares

No. of 
Treasury 
Shares

Cash 
Contribution

Noncash  
Contribution

— 

 — 

 — 
— 

 — 

 — 

416,666 

 416,666 
4,575,000 

 760,531 

— 

— 

— 
— 

— 

 — 

4,800,000 

4,800,000 
51,588,551 

 2,051,954 

 — 

 — 

 — 
 — 

 — 

4,800,000 

4,800,000 
51,588,551 

 2,051,954 

 — 

 73,132 

— 

730,592 

 — 

 730,592 

 — 

 — 

3,000,000 (d)

 3,000,000 

5,000,000 (f)

 5,000,000 

Total 
Capital 
Contribution

Accumulated 
Other 
Comprehensive 
Income (Loss)

Deficit  
Accumulated  
During the  
Development 
Stage

Treasury 
Stock

Total  
Stockholders’ 
Equity

 — 

 — 

(73,112,027)

— 

 (73,112,027)

— 

 — 
 — 

— 

 — 

 — 

 — 

 — 

 — 
 — 

 — 

 — 

 4,800,000 

 — 
 — 

 4,800,000 
51,588,551 

 — 

 2,051,954 

 — 

 — 

 730,592 

 — 

 — 

— 

3,000,000 

 — 

 5,000,000 

 — 
63,971,097 

2,013,177 (c)

 10,013,177 

 2,013,177 
73,984,274 

 — 
 — 

 — 
(73,112,027)

 — 
— 

 2,013,177 
 872,247 

 — 

 — 

(47,218,326)

 — 

 (47,218,326)

 — 

 — 

 96,336 

 — 

 — 
 — 

189,084 
6,527,415 

 — 

 — 

 — 

138,567 

— 

— 

— 
— 

— 

— 

— 

708,931 

 — 

 — 

 — 

708,931 

395,679 

 — 

 78,208 

— 

395,679 

 — 

243,383 

— 

 — 

2,000,000 (d)

2,000,000 

 — 
1,104,610 

1,807,593 (c)
 3,807,593 

1,807,593 
4,912,203 

 — 
 — 

— 
 — 

 — 

213,987 
674,145 

 — 
11,700,000 

 35,033 

— 
— 

— 
— 

— 

 — 
54,967,204 

 84,973 

 — 

 90,380 

— 

348,605 

 — 
 — 

 — 

 — 

 — 
54,967,204 

 84,973 

348,605 

 — 

9,063,080 

 — 
 — 

 965,143 
21,853,636 

— 

— 
— 

 — 

46,260,576 (g)

46,260,576 

 — 
55,400,782 

2,966,797 (c)

 49,227,373 

 2,966,797 
 104,628,155 

F-30

 — 

 — 

 — 

 — 
 — 

 — 
— 

 — 

 — 

 — 

 — 
 — 

 — 

 — 

708,931 

 — 

 — 

 395,679 

 — 

 — 

 2,000,000 

— 
(47,218,326)

 — 
 — 

 1,807,593 
(42,306,123)

 (53,038,802)
 — 

 — 

— 
 — 

 — 

 (53,038,802)
 54,967,204 

 84,973 

 — 

— 

 348,605 

 — 

 — 

 46,260,576 

 — 
 (53,038,802)

 — 
 — 

 2,966,797 
51,589,353 

2001
Net Loss  . . . . . . . . . .
Edison Development 
Corporation . . . .

General Electric 

Company . . . . . .
Public offering-net . .
Stock option 

exercises  . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock issued for 
development 
agreement  . . . . .

Stock option issued 

to affiliate  . . . . .

Stock based 

compensation 
and other 
noncash 
transactions . . . .

2002
Net Loss  . . . . . . . . . .
Stock option 

exercises  . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock issued for 
development 
agreement  . . . . .

Stock based 

compensation 
and other 
noncash 
transactions . . . .

2003
Net Loss  . . . . . . . . . .
Public offering, net . .
Stock option 

exercises  . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock issued in 

acquisition of 
H Power . . . . . . .

Stock based 

compensation . . .

 
 
 
 
2004
Net Loss  . . . . . . . . . .
Stock option 

exercises  . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock based 

compensation . . .

Change in 

unrealized loss 
on marketable 
securities . . . . . .

2005
Net Loss  . . . . . . . . . .
Public offering, 

Unrealized gain on 

available for sale 
securities . . . . . .

2006
Net Loss  . . . . . . . . . .
Stock offering 

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

No. of 
Preferred 
Shares

No. of  
Common 
Shares

No. of 
Treasury 
Shares

Cash 
Contribution

Noncash  
Contribution

Total 
Capital 
Contribution

Accumulated 
Other 
Comprehensive 
Income (Loss)

Deficit  
Accumulated  
During the  
Development 
Stage

Treasury 
Stock

Total  
Stockholders’ 
Equity

 — 

 — 

 (46,738,827)

 — 

 (46,738,827)

 — 

501,308 

— 

 — 

501,308 

409,413 

 — 

 409,413 

 — 

4,137,202 (c)

4,137,202 

 — 

 — 

 — 

 — 

 — 

 501,308 

 — 

 — 

 — 

 409,413 

 — 

 4,137,202 

 — 
910,721 

 — 
 4,137,202 

 — 
5,047,923 

(482,391)
(482,391)

 — 
 (46,738,827)

 — 
 — 

 (482,391)
 (42,173,295)

 — 

 — 

 — 

 — 

 — 

 95,960 

 71,709 

332,500 

— 
 — 

 — 
 500,169 

— 

— 

— 

— 

— 
— 

 — 

 — 

— 

 — 

 — 

 — 

 (51,743,462)

 — 

 (51,743,462)

net  . . . . . . . . . . .

 — 

12,000,000 

— 

70,580,736 

Stock option 

exercises  . . . . . .

 — 

 82,082 

— 

516,686 

Stock issued under 
employee stock 
purchase plan . . .

Stock based 

 — 

 78,702 

compensation . . .

 — 

 323,586 

374,149 

 — 

 374,149 

 — 

2,888,685 (c)

2,888,685 

 — 

 — 

 — 

 — 

 — 

 — 

 — 

— 

— 

 70,580,736 

 — 

 516,686 

 — 

 374,149 

 — 

 2,888,685 

 — 

 — 

 — 

70,580,736 

516,686 

 — 
— 

 — 
12,484,370 

— 
71,471,571 

 — 
 2,888,685 

 — 
74,360,256 

225,271 
 225,271 

 — 
(51,743,462)

 — 
 — 

 225,271 
22,842,065 

— 

— 

— 
— 

 — 

— 

 — 

 — 

— 

 — 

 — 

 (50,309,587)

 — 

 (50,309,587)

(Issued at 5.50 
per share net  
of purchase 
cost) . . . . . . . . . . 395,000 

Stock option 

11,240 

 — 

214,442,129 (h)

exercises  . . . . . .

 — 

 7,958 

 — 

31,351 

Stock issued under 
employee stock 
purchase plan . . .

Stock based 

 — 

 100,669 

compensation . . .

 — 

 839,800 

 — 

 — 

364,668 

—

— 

— 

214,442,129 

31,351 

364,668 

— 

 — 

— 

 — 

 — 

 — 

 — 

 — 

 — 

 214,442,129 

 — 

 31,351 

 — 

 364,668 

 — 

 4,858,100 

— 

4,858,100(c)

4,858,100 

Unrealized gain on 

available for sale 
securities . . . . . .

— 
395,000 

 — 
959,667 

 — 
 — 

 — 
 214,838,148 

— 
4,858,100

 — 
219,696,248 

 186,640 
 186,640 

 — 
 (50,309,587)

 — 
 — 

 186,640 
 169,573,301 

F-31

 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

No. of 
Preferred 
Shares

No. of  
Common 
Shares

No. of 
Treasury 
Shares

Cash 
Contribution

Noncash  
Contribution

Total 
Capital 
Contribution

Accumulated 
Other 
Comprehensive 
Income (Loss)

Deficit  
Accumulated  
During the  
Development 
Stage

Treasury 
Stock

Total  
Stockholders’ 
Equity

 — 

 — 

 — 

— 

—

 — 

 — 

 (60,570,816)

 — 

 (60,570,816)

2007
Net Loss  . . . . . . . . . .
Stock option 
exercises 
(Issued at 
average cost 
of 1.00 
per share) . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock based 

Unrealized gain on 

available for sale 
securities . . . . . .

Foreign currency 

translation  
gain  . . . . . . . . . .
Warrants issued  . . . .

2008
Net Loss  . . . . . . . . . .
Stock option 
exercises 
(Issued at 
average cost 
of 1.00 
per share) . . . . . .

Stock issued under 
employee stock 
purchase plan . . .

Stock based 

Unrealized gain on 

available for sale 
securities . . . . . .

Foreign currency 
translation 
loss . . . . . . . . . . .
Treasury stock  . . . . .

Total as of 

December 31, 
2008 . . . . . . . . . .

 — 

 — 

 — 

 — 

 — 

151,237 

 — 

 151,237 

 — 

 65,515 

205,808 

—

—

 151,237 

 205,808 

compensation . . .

— 

871,255 

 — 

5,299,300(c)

5,299,300 

— 

 — 

 — 

 — 

 — 

 151,237 

 — 

 — 

 — 

 205,808 

 — 

5,299,300 

 — 

 — 
 — 
 — 

 — 

 — 

 — 

 — 
 — 
1,088,007 

— 
 — 
 — 

 — 
 — 
 357,045 

—

—

1,405,715 (i)
6,705,015 

— 

 141,897 

 — 

 — 

 141,897 

 — 
 1,405,715 
 7,062,060 

 7,739,141 
 — 
 7,881,038 

 — 
 — 
 (60,570,816)

 — 
— 
 — 

 7,739,141 
 1,405,715 
 (45,627,718)

 — 

 — 

 — 

 — 

—

 — 

 — 

(121,700,024)

 — 

(121,700,024)

 — 

3,935 

 — 

 3,935 

 — 

 111,402 

 307,579 

—

—

 3,935 

 307,579 

compensation . . .

— 

 665,744 

6,658 

7,258,897 (c)

 7,265,555 

Conversion of 
Preferred 
Stock  . . . . . . . . . (395,000)

39,500,000 (j)

 — 

 — 

 — 

—

— 

 — 

— 

 — 

 — 

 — 

 — 

 3,935 

 — 

 — 

 — 

 — 

— 

 307,579 

7,265,555 

 — 

 — 

 — 

 — 

 — 

 155,688 

 — 

 — 

 155,688 

 — 
 — 
(395,000)

— 
 — 
40,281,081 

 — 
402,114 
402,114  $

 — 
 — 
318,172 

—
—
$ 7,258,897

 — 
 — 
7,577,069 

$

(8,325,499)
 — 

 — 
(8,325,499)
 (743,586)
— 
$ (8,169,811) $ (121,700,024) $(743,586) $(123,036,352)

 — 
(743,586)

— 128,164,003

402,114 $ 636,330,193

$130,299,153

$ 766,629,346

$  (359,253) $(639,662,385) $(743,586) $ 125,864,122

F-32

 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

a. 

b. 

c. 

Since inception, Mechanical Technology Incorporated has contributed in-process research and development of 
$4,042,640; certain net assets at inception of $707,360; $2,000,000 of deferred rent related to a below market lease 
for office and manufacturing facilities; $500,000 of in-kind services; land and buildings valued at approximately 
$4,697,782; and research contracts valued at approximately $2,250,000.

In February 1999, the Company issued 2,250,000 shares of common stock to GE MicroGen, Inc. in exchange for 
a 25% interest in GE Fuel Cell Systems, LLC. The fair value of the shares issued of $11,250,000 was recorded 
under the balance sheet caption “Investment in affiliates”. 

These issuances primarily represent stock based compensation issued to employees, consultants and others for 
services performed. These amounts are recorded at the fair value of the issuance on the grant date.

d.  Represents the fair value of shares issued to Engelhard Corporation for the development and supply of advanced 

catalysts as part of a development agreement.

e.  Represents the fair value of shares issued for ownership interest in Advanced Energy Incorporated.

f. 

Represents  the  fair  value  of  an  option  to  purchase  725,000  shares  of  the  Company’s  common  stock  issued  to 
GE  Power  Systems  Equities,  Inc.  as  part  of  the  amendment  to  the  GE  Fuel  Cell  Systems  LLC  distribution 
agreement. 

g.  Represents the fair value of shares issued related to the acquisition of H Power.

h.  On June 29, 2006, Smart Hydrogen, Inc. purchased 395,000 shares of Class B Capital Stock, a class of preferred 

stock, along with the 11,240 shares of common stock.

i. 

j 

On May 4, 2007, the shareholders of General Hydrogen received warrants to purchase up to 571,429 shares of Plug 
Power Common Stock. See Note 3, Acquisitions.

On  December  20,  2008  the  395,000  shares  of  Class  B  capital  stock  was  converted  into  39,500,000  shares  of 
common stock.

14.  EMPLOYEE BENEFIT PLANS

1999 Employee Stock Purchase Plan

In 1999, the Company adopted the 1999 Employee Stock Purchase Plan (the Plan) under which employees are 
eligible to purchase shares of the Company’s common stock at a discount through periodic payroll deductions. The 
Plan is intended to meet the requirements of Section 423 of the Internal Revenue Code. Purchases occur at the end 
of six month offering periods at a purchase price equal to 85% of the market value of the Company’s common stock 
at either the beginning of the offering period or the end of the offering period, which ever is lower. Participants may 
elect to have up to 10% of their pay withheld for purchase of common stock at the end of the offering period, up to a 
maximum of $12,500 within any offering period. The Company has reserved 1,000,000 shares of common stock for 
issuance under the Plan. The Company issued 111,402, 65,515 and 100,669 shares of stock under the Plan during 2008, 
2007, and 2006, respectively.

Under  SFAS  No.  123(R),  the  15%  discount  and  the  look-back  feature  are  considered  compensatory  items  for 
which expense must be recognized. The Company values Plan shares as a combination position consisting of 15% of a 
share of nonvested stock and 85% of a six-month stock option. The value of the nonvested stock is estimated based on 
the trading value of the Company’s common stock at the beginning of the offering period, and an expected life of six 
months. The resulting per-share value is multiplied by the shares estimated to be purchased during the offering period 
based on historical experience to arrive at a total estimated compensation cost for the offering period. The estimated 
compensation cost is recognized on a straight-line basis over the offering period.

F-33

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Stock Option Plans (the Option Plans)

1997 Stock Option Plan

Effective  July  1,  1997,  the  Company  established  a  stock  option  plan  to  provide  employees,  consultants,  and 
members of the Board of Directors the ability to acquire an ownership interest in the Company (1997 Stock Option 
Plan). Options for employees issued under this plan generally vested 20% per year and expire ten years after issuance. 
Options  granted  to  members  of  the  Board  generally  vested  50%  upon  grant  and  25%  per  year  thereafter.  Options 
granted to consultants generally vested one-third on the expiration of the consultant’s initial contract term, with an 
additional one-third vesting on each of the next two anniversaries thereafter. At December 31, 2008, there were 84,428 
options outstanding and vested under this plan. Although no further options will be granted under this plan, the options 
previously granted will be exercisable for shares of common stock until their expiration dates are reached.

1999 Stock Option and Incentive Plan 

Effective August 16, 1999, the Company established a stock option plan to encourage and enable the officers, 
employees, independent directors and other key persons (including consultants) of the Company and its subsidiaries 
upon whose judgment, initiative and efforts the Company largely depends for the successful conduct of its business to 
acquire a proprietary interest in the Company (1999 Stock Option Plan).

At December 31, 2008 there were approximately 6.0 million options granted and outstanding and 4.0 million options 
available to be issued under the 1999 Stock Option Plan. The number of shares of common stock available for issuance under 
the Plan will increase by the amount of any forfeitures under the 1999 Stock Option Plan and under the 1997 Stock Option 
Plan. The number of shares of common stock under the 1999 Stock Option Plan will further increase January 1 and July 1 
of each year by an amount equal to 16.45% of any net increase in the total number of common shares of stock outstanding. 
The  1999  Stock  Option  Plan  permits  the  Company  to:  grant  incentive  stock  options;  grant  non-qualified  stock  options; 
grant stock appreciation rights; issue or sell common stock with vesting or other restrictions, or without restrictions; grant 
rights to receive common stock in the future with or without vesting; grant common stock upon the attainment of specified 
performance goals; and grant dividend rights in respect of common stock. Options for employees issued under this plan 
generally vest in equal annual installments over periods of three or four years and expire ten years after issuance. Options 
granted to members of the Board generally vest one year after issuance. Options granted to consultants generally vested one-
third on the expiration of the consultant’s initial contract term, with an additional one-third vesting on each of the next two 
anniversaries thereafter. To date, options granted under the 1999 Stock Option Plan have vesting provisions ranging from 
immediate vesting to five years in duration and expire ten years after issuance.

Compensation cost associated with employee stock options represented approximately $3.9 million of the total 
share-based payment expense recorded for the year ended December 31, 2008.  This $3.9 million includes $1.6 million 
in accelerated stock option expense recorded as a result of the change in control as described in Note 13, Stockholders’ 
Equity.  The Company estimates the fair value of stock options and shares issued under the employee stock purchase 
plan using a Black-Scholes valuation model consistent with the provisions of FAS 123R and SAB 107, and the resulting 
fair  value  is  recorded  as  compensation  cost  on  a  straight-line  basis  over  the  option  vesting  period.  Key  inputs  and 
assumptions used to estimate the fair value of stock options include the grant price of the award, the expected option 
term, volatility of the Company’s stock, an appropriate risk-free rate, and the Company’s dividend yield. Estimates of 
fair value are not intended to predict actual future events or the value ultimately realized by employees who receive 
equity awards, and subsequent events are not indicative of the reasonableness of the original estimates of fair value 
made by the Company. The assumptions made for purposes of estimating fair value under the Black-Scholes model 
for the 1,114,750, 1,317,450 and 1,168,450 options granted during the years ended December 31, 2008, 2007 and 2006, 
respectively were as follows:

Dividend yield:
Expected term of options (years):
Risk free interest rate:
Volatility:

2008
0%
6

2007
0%
6

2006
0%
6

   2.56%-3.45%    3.77%-5.04%    4.37%-5.05%

61%-84%   

55%-62%   

60%-65%

F-34

 
  
  
  
  
  
  
  
  
  
  
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

The Company’s estimate of an expected option term was calculated in accordance with the SAB 110 simplified 
method for calculating the expected term assumption. The estimated stock price volatility was derived based upon a 
blend of implied volatility and the Company’s actual historic stock prices over the past six years, which represents the 
Company’s best estimate of expected volatility.

A summary of stock option activity for the year December 31, 2008 is as follows:

Options outstanding at December 31, 2007 . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exercised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Expired . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Options outstanding at December 31, 2008 . . . . . . . . .
Options exercisable at December 31, 2008 . . . . . . . . . .
Options fully vested at December 31, 2008 . . . . . . . . .

Shares
6,578,313 
1,114,750 
(3,935)
(489,484)
(1,079,840)
6,119,804 
6,119,804 
6,119,804 

Weighted
Average
Exercise Price 
$ 9.14 
2.83 
1.00 
3.64 
6.85
$8.84 
$8.84 
$8.84 

Weighted
Average
Remaining
Contractual
Terms
5.9

Aggregate
Intrinsic Value

5.6
5.6
5.6

$18,750 
$18,750 
$18,750 

The weighted average grant date fair value of options granted during the years ended December 31, 2008, 2007 
and 2006 was $1.68, $1.92 and $3.00, respectively. The total intrinsic value of options exercised during the year ended 
December 31, 2008 was approximately $7,800. As of December 31, 2008, there was no unrecognized compensation 
cost related to stock option awards to be recognized in future years. The total fair value of stock options that vested 
during years ended December 31, 2008 and 2007 was approximately $3.9 million and $2.7 million, respectively. 

The following table summarizes information about the stock options outstanding and exercisable under the Option 

Plans at December 31, 2008:

Exercise Price range
$ 0.00 – 14.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14.01 – 28.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
28.01 – 42.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
42.01 – 56.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
56.01 – 70.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
70.01 – 84.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
84.01 – 98.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
98.01 – 112.00 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Options Outstanding and Exercisable
Weighted 
Average 
Remaining 
Contractual 
Term 
(years)
6.0
1.4
—
1.4
1.4
1.1
1.5
1.2
5.6

Weighted 
Average 
Exercise 
Price
$ 6.00
17.82
—
44.42
66.35
83.50
96.22
106.75
8.84

Shares
5,555,189
355,375
—
98,000
21,000
10,200
67,240
12,800
6,119,804

Restricted stock awards vest in equal installments over a period of one to four years. Restricted stock awards 
were valued based on the closing price of the Company’s common stock on the date of grant, and compensation cost 
is recorded on a straight-line basis over the share vesting period. The Company recorded expense of approximately 
$1.8 million associated with its restricted stock awards in 2008. This $1.8 million includes $0.3 million in accelerated 
restricted stock expense recorded as a result of the change in control as described in Note 13, Stockholders’ Equity. 
As  of  December  31,  2008,  there  was  no  unrecognized  compensation  cost  related  to  restricted  stock  awards  to  be 
recognized in future years.

F-35

 
 
 
 
 
 
 
 
 
 
 
 
 
PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

A summary of restricted stock activity for the year ended December 31, 2008 is as follows:

Unvested restricted stock at December 31, 2007 . . . . . . . . . . . . . . . . . . . . . .
Granted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Forfeited . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Vested . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unvested restricted stock at December 31, 2008 . . . . . . . . . . . . . . . . . . . . . .

Aggregate 
Intrinsic 
Value
$ 2,810,756
407,240
(250,271)
(2,967,725)
—

Shares
784,697
158,500
(79,378)
(863,819)

— $

For  the  years  ended  December  31,  2008,  2007,  and  2006,  the  Company  recorded  expense  of  approximately 

$8.6 million, $5.4 million, and $4.3 million respectively, in connection with its share based payment awards.

401(k) Savings & Retirement Plan

The Company offers a 401(k) Savings & Retirement Plan to eligible employees meeting certain age and service 
requirements. This plan permits participants to contribute 100% of their salary, up to the maximum allowable by the 
Internal Revenue Service regulations. Participants are immediately vested in their voluntary contributions plus actual 
earnings or less actual losses thereon. Participants are vested in the Company’s matching contribution based on years of 
service completed. Participants are fully vested upon completion of three years of service. During 2002, the Company 
began funding its matching contribution in common stock. Accordingly, the Company has issued 379,189, 279,054 and 
199,124 shares of common stock to the Plug Power Inc. 401(k) Savings & Retirement Plan during 2008, 2007 and 2006, 
respectively.

The Company’s expense for this plan, including the issuance of shares, was approximately $835,000, $962,000 

and $915,000 for years ended December 31, 2008, 2007 and 2006, respectively.

15.  OTHER RELATED PARTY TRANSACTIONS

Pursuant to the Second Amendment to the Amended and Restated Distribution Agreement dated May 13, 2005, 
the Company currently has a non-exclusive distribution agreement with DTE Energy Technologies, Inc. (DTE), an 
affiliate of Edison Development Company and DTE Energy Corporation, for the states of Michigan, Ohio, Illinois, and 
Indiana. According to the most recent amendments to the agreement, the Company may sell directly or negotiate non-
exclusive distribution rights with third parties for the GenCore, GenSite and GenSys2T products in these four states. 
For every product sold directly by the Company or by a third party within Michigan, Ohio, Illinois and Indiana the 
Company has agreed to pay a 5% commission to DTE based on sales price of units shipped to the above noted states. 
The distribution agreement expires on December 31, 2014.

As of December 31, 2008 and 2007, the Company had no payables due to DTE under this commission provision 

and no outstanding receivables from DTE.

16.  FAIR VALUE OF FINANCIAL INSTRUMENTS 

The  following  disclosure  of  the  estimated  fair  value  of  financial  instruments  is  made  in  accordance  with  the 
provision  of  SFAS  No.107,  Disclosures  About  Fair  Value  of  Financial  Instruments.  Although  the  estimated  fair 
value amounts have been determined by the Company using available market information and appropriate valuation 
methodologies, the estimates presented are not necessarily indicative of the amounts that the Company could realize 
in current market exchanges.

The following methods and assumptions were used by the Company in estimating its fair value disclosures for 

financial instruments:

Cash  and  cash  equivalents,  accounts  receivable,  accrued  interest  receivable  and  payable,  and  notes 
receivable: The carrying amounts reported in the consolidated balance sheets approximate fair value because of 
the short maturities of these instruments.

F-36

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

17.  SUPPLEMENTAL DISCLOSURES OF CASH FLOWS INFORMATION

The following represents required supplemental disclosures of cash flows information and non-cash financing 

and investing activities which occurred during the years ended December 31, 2008, 2007 and 2006:

Cash paid for interest . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stock-based compensation accrual impact. . . . . . . . . . . . . . . . . . 
Change in unrealized gain/loss on  

2008

2007

2006

$

—
(1,341,324)

$

— $ 160,124
591,970

(247,054)

available-for-sale securities . . . . . . . . . . . . . . . . . . . . . . . . . . .

155,688

141,897

186,640

Estimated fair value of net assets acquired  

and liabilities assumed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Decrease) increase to broker for security purchase  . . . . . . . . . .
Restricted shares forfeited  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transfer to trading securities – auction  

—
—
(124,945)

58,512,893
(5,000,000)
—

—
5,000,000
—

rate debt securities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

52,650,654

—

—

18.  COMMITMENTS AND CONTINGENCIES

Alliances and development agreements

BASF

In 2006, BASF SE, a German Societas Europaea (SE) corporation, acquired Engelhard, with whom we have a 
Development Agreement and a Supply Agreement. With its acquisition, BASF inherited Engelhard’s obligations to the 
Company under both of these agreements. The Development Agreement, dated April 5, 2004, is for the development 
of  advanced  catalysts  to  increase  the  overall  performance  and  efficiency  of  the  Company’s  fuel  processor  and  will 
expire on December 31, 2010. The Supply Agreement, also dated April 5, 2004, is a requirements contract whereby the 
Company agrees to buy from BASF and BASF agrees to sell to the Company, 100% of the Company’s requirements for 
catalyst materials, as developed under the Development Agreement, the price to be determined January 1st of each year 
by BASF, until the agreement’s expiration date of December 31, 2010.

Home Energy Station

We have been developing technology in support of the automotive fuel cell market under a series of  agreements 
with  Honda  R&D  Co  Ltd.  of  Japan  (Honda),  a  subsidiary  of  Honda  Motor  Co.,  Ltd.  Under  these  agreements,  the 
Company  has  developed,  on  a  joint  and  exclusive  basis,  and  tested  four  phases  of  prototype  fuel  cell  systems  that 
provide electricity and heat to a home or business, while also providing hydrogen fuel for a fuel cell vehicle (the Home 
Energy Station). Since 2003, the Company has successfully demonstrated four successive prototype generations of the 
Home Energy Station at Honda R&D Americas’ facility in Torrance, California and at Plug Power’s facility in Latham. 
In  2009  we  will  continue  to  provide  service  for  the  current  model  of  the  Home  Energy  Station  located  at  Honda’s 
Torrance, California facility.

General Electric Company (GE) Entities

On February 27, 2006, the Company, GE MicroGen, Inc., and GE restructured their service and equity relationships 
by terminating the joint venture and the associated distributor and other agreements, and entering into a new development 
collaboration agreement. Under the new agreement, the Company and GE (through its Global Research unit) have agreed 
to collaborate on programs including but not limited to development of tools, materials and components that can be applied 
to various types of fuel cell products. The Company and GE mutually agreed to extend the terms of the new development 
collaboration agreement such that the Company is obligated to purchase $1 million of services from GE in connection 
with this collaboration prior to December 31, 2009. As of December 31, 2008 the obligation remaining under the contract 
was approximately $400,000. The development collaboration agreement is scheduled to terminate on the earlier of (i) 
December 31, 2014 or (ii) upon the completion of a certain level of program activity.

F-37

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

NYSERDA

The  Company  has  an  obligation  to  repay  the  New  York  State  Environmental  Research  and  Development 
Authority (NYSERDA) according to royalty payment provisions in each of the Company’s past and present NYSERDA 
agreements. For sales made by a New York State manufacturer, the Company must pay a royalty to NYSERDA at a rate 
of 0.5% of net sales of products developed under the NYSERDA programs; or, for a non-new York State manufacturer, 
the  Company  must  pay  a  royalty  to  NYSERDA  at  a  rate  of  3%  of  net  sales.  The  royalty  payments  are  currently 
calculated at 0.5% of net sales of our GenCore and GenSys products because we are a New York State manufacturer 
and both of these products were developed using some percentage of NYSERDA monies. The Company’s maximum 
liability  under  the  NYSERDA  royalty  provisions  is  one  times  the  aggregate  total  amount  of  monies  received  from 
NYSERDA. If the total amount received from NYSERDA under an individual agreement is not paid back in royalties 
to NYSERDA within fifteen (15)years from the date of that individual agreement, then that amount is deducted from 
the aggregate total amount due under the royalty provisions. As of December 31, 2008 and 2007, approximately $15,000 
and $17,000, respectively have been recorded as accrued expenses in the consolidated balance sheets related to the 
royalty provisions.

Leases

As of December 31, 2008 and 2007, the Company has no capital leases outstanding. The Company has several 
noncancelable operating leases, primarily for warehouse facilities and office space that expire over the next five years. 
Rental  expense  for  operating  leases  during  2008,  2007,  and  2006  was  approximately  $1,909,000,  $1,600,000  and 
$350,000, respectively.

Future minimum lease payments under noncancelable operating leases (with initial or remaining lease terms in 

excess of one year) as of December 31, 2008 are:

Year ending December 31
2009  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2010 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2011 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2012 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2013 and thereafter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total minimum lease payments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating leases
$1,661,469
1,314,855
875,500
—
—
$3,851,824

Concentrations of credit risk

Concentrations of credit risk with respect to receivables exist due to the limited number of select customers that 
the Company has initial commercial sales arrangements. To mitigate credit risk, the Company applies standard credit 
approvals and performs appropriate evaluation of a prospective customer’s financial condition. At December 31, 2008, 
five customers comprise approximately 62.0% of the total accounts receivable balance, with each customer individually 
representing 22.3%, 11.7%, 10.6%, 10.1% and 7.3% of total accounts receivable, respectively.

At December 31, 2007, five customers comprise approximately 55.4% of the total accounts receivable balance, 
with  each  customer  individually  representing  16.3%,  13.1%,  10.3%,  8.5%  and  7.2%  of  total  accounts  receivable, 
respectively.

The Company has cash deposits in excess of federally insured limits. The amount of such deposits is essentially 

all cash at December 31, 2008.

Employment Agreements

The Company is party to employment agreements with certain executives which provide for compensation and 

certain other benefits. The agreements also provide for severance payments under certain circumstances.

F-38

PLUG POWER INC. AND SUBSIDIARIES 
(A Development Stage Enterprise)
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—(Continued)

Early Commercial Purchase Agreement

On  October  15,  2007,  the  Company  and  Wal-Mart  Stores  East,  LP  (Wal-Mart)  signed  an  Early  Commercial 
Purchase Agreement for GenDrive units. Under this agreement, the Company has certain commitments to provide for 
the maintenance/service of the units sold as well as supply of hydrogen to Wal-Mart for up to seven years from the date 
of commissioning. The Company also provides certain indemnifications related to this agreement to Wal-Mart. As of 
September 30, 2008, all units sold to Wal-Mart have been placed in service. 

19.  GEOGRAPHIC INFORMATION

As discussed in Note 3, Acquisitions, the Company acquired businesses in Canada during 2007. Prior to these 
acquisitions,  substantially  all  of  the  Company’s  revenue  was  recognized  in  the  United  States.  The  following  is  a 
summary of revenue for the years ended December 31, 2008 and 2007, based on physical location of the subsidiary 
making the sale:

United States . . . . . . . . . . . . . . . . . . . . . . .
Canada  . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008

Product and service 
revenue
$4,442,432
224,863
$4,667,295

2008
Research and 
development 
contract 
revenue
$ 10,779,553
2,454,469
$13,234,022

2007

Product and service 
revenue
$2,792,923
289,033
$ 3,081,956

2007
Research and 
development 
contract 
revenue
$11,982,095
1,206,572
$13,188,667

Long-lived assets, representing the sum of net book value of property, plant, and equipment plus intangible assets, 

goodwill and other assets, based on physical location as of December 31, 2008 and 2007, are as follows: 

United States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Canada  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Total  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2008
$ 20,871,248
9,911,038
$ 30,782,286

2007
$29,388,998
60,185,561
$ 89,574,559

20.  UNAUDITED QUARTERLY FINANCIAL DATA (IN THOUSANDS, EXCEPT PER SHARE DATA)

Product and service revenue . . . . . . . . . . . . . . . . . . . . . . .
Contract revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss per share:

Quarters Ended

March 31, 
2008

$

850
2,887
(20,728)

June 30, 
2008
$ 1,130
3,702
(22,867)

September 30, 
2008
$ 1,271
2,783
(13,810)

December 31, 
2008
$ 1,416
3,862
(64,295)

Basic and diluted . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(0.24)

(0.26)

(0.16)

(0.69)

Product and service revenue . . . . . . . . . . . . . . . . . . . . . . .
Contract revenue . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Net loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss per share:

Quarters Ended

March 31, 
2007

$

462
2,168
(11,183)

June 30, 
2007

$

676
3,331
(16,727)

September 30, 
2007
$ 1,199
3,336
(15,176)

December 31, 
2007

$

745
4,354
(17,485)

Basic and diluted . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(0.13)

(0.19)

(0.17)

(0.20)

F-39

CORPORATE INFORMATION

PLUG POWER EXECUTIVE OFFICERS

BOARD OF DIRECTORS

Andrew Marsh 
President, Chief Executive Officer and Director

Jeffrey M. Drazan 
Director

Gerald A. Anderson 
Senior Vice President and Chief Financial Officer

Mark A. Sperry 
Senior Vice President and General Manager  
of Continuous Power Division

Gerard L. Conway, Jr. 
Senior Vice President, General Counsel  
and Corporate Secretary

CORPORATE HEADQUARTERS

PLUG POWER INC 
968 Albany Shaker Road 
Latham, NY 12110 
518.782.7700 
www.plugpower.com

STOCK TRANSFER AGENT AND REGISTRAR
American Stock Transfer and Trust Company 
6201 15th Avenue 
Brooklyn, NY 11219 
(800) 937-5449

INDEPENDENT AUDITORS
KPMG LLP 
515 Broadway 
Albany, NY 12207 
(518) 427-4600

Larry G. Garberding 
Co-Founder of Plug Power Inc. 
Director

Maureen O. Helmer 
Director

Andrew Marsh 
Director

George C. McNamee 
Co-Founder of Plug Power Inc. 
Chairman of the Board

Gary K. Willis 
Director

STOCK EXCHANGE LISTING
Plug Power’s common stock is traded on the NASDAQ 
national market under the symbol “PLUG.”

FORM 10-K
Plug Power’s Annual Report on Form 10-K for the 
fiscal year ended December 31, 2008, filed with the 
Securities Exchange Commission is available upon 
request. The Form 10-K and exhibits may be obtained 
by writing to Investor Relations, Plug Power Inc, 968 
Albany Shaker Road, Latham, NY 12110.