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<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>UNITED STATES</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>SECURITIES AND
EXCHANGE COMMISSION</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>Washington, D.C.&nbsp;
20549</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>FORM 8-K</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>CURRENT REPORT</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>Pursuant to
Section 13 or 15(d) of the</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>Securities
Exchange Act of 1934</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>Date of Report (Date
of earliest event reported)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>October 28, 2009</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b><u>PLUG POWER INC.</u></b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>(Exact Name of
Registrant as Specified in Charter)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";' align="center">
<b><u>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</u></b><u>Delaware&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 000-27527&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 22-3672377</u></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";' align="center">(State or Other Jurisdiction&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (Commission
File Number)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (IRS Employer</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";' align="center">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; of Incorporation)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Identification
No.)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<u>968 Albany Shaker
Road, Latham, New York&nbsp; 12110</u></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>&nbsp;(Address of
Principal Executive Offices) (Zip Code)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>Registrant's
telephone number, including area code: (518) 782-7700</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>_____________________________________________________</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>&nbsp;(Former Name or
Former Address, if Changed Since Last Report)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the
registrant under any of the following provisions (<i>see </i>General
Instruction A.2. below):</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<font face="Wingdings">&#111;</font>&nbsp;&nbsp; Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<font face="Wingdings">&#111;</font>&nbsp;&nbsp; Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<font face="Wingdings">&#111;</font>&nbsp;&nbsp; Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<font face="Wingdings">&#111;</font>&nbsp;&nbsp; Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-right:0in; margin-top:0in' align="left">
&nbsp;</p><hr color="#000080">
<br clear=all
style='page-break-before:always'>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='font-size:12.0pt;font-family:"Times New Roman"; margin-left:0in; margin-right:0in'>
<b>Item 5.02&nbsp; Departure of Directors or Certain Officers;
Election of Directors; Appointment of Certain Officers; Compensatory
Arrangements of Certain Officers</b></p>
<p style='font-size:12.0pt;font-family:"Times New Roman"; margin-left:0in; margin-right:0in'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; On October 28, 2009,
the Compensation Committee of the Board of Directors of Plug Power Inc. (the &#147;Company&#148;)
approved the grant of restricted stock units to&nbsp;a number of employees,
including each of the Company&#146;s executive officers.</p>
<p style='font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in; margin-left:0in; margin-right:0in'>Each of the Company&#146;s executive
officers received a long-term incentive award of performance-based restricted
stock units (&#147;RSUs&#148;).&nbsp; The RSUs will vest based upon the achievement, at the
threshold, target or stretch level, of certain performance targets for the
one-year periods ending December 31, 2010, 2011 and 2012 with respect to the
Company&#146;s revenues and earnings per share.&nbsp; Achievement of the revenue target
in any year will result in the vesting of up to 25% of the RSUs subject to
vesting in such year.&nbsp; Achievement of the earnings per share target in any year
will result in the vesting of up to 75% of the shares subject to vesting in
such year.&nbsp; The percentage of the total RSUs subject to vesting each year is
20% for 2010, 25% for 2011 and 55% for 2012.&nbsp; All RSUs earned based on
achievement of the performance targets for any year will vest within 75 days
after the end of such year.</p>
<p style='font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in; margin-left:0in; margin-right:0in'>The following table summarizes, for
each of the Company&#146;s Chief Executive Officer and four other named executive
officers, the total number of RSUs granted and the number of RSUs that would
vest if all performance targets are achieved at the target level:</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;&nbsp;&nbsp;</font></p>
<table border="0" style="border-collapse: collapse" width="100%" id="table1" cellpadding="0">
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
&nbsp;</p>
		</td>
		<td align="center">
<font style="font-size: 10.0pt">Total Number </font></td>
		<td align="center">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
&nbsp;</p>
		</td>
		<td align="center">
<font style="font-size: 10.0pt">of RSUs Granted&nbsp;&nbsp;&nbsp;&nbsp; </font>
		</td>
		<td align="center">
<font style="font-size: 10.0pt">Number of RSUs</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Name and Title&nbsp;</font></p>
		</td>
		<td align="center">
<font style="font-size: 10.0pt">(Number Vesting at Stretch Level)&nbsp; </font>
		</td>
		<td align="center">
<font style="font-size: 10.0pt">Vesting at Target Level</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;</font></p>
		</td>
		<td>&nbsp;</td>
		<td>&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Andrew Marsh</font></p></td>
		<td align="right">
<font style="font-size: 10.0pt">&nbsp; 1,289,063</font></td>
		<td align="right">
<font style="font-size: 10.0pt">1,171,875</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">President and Chief</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Executive Officer</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Gerald A. Andersen</font></p></td>
		<td align="right">
<font style="font-size: 10.0pt">793,271</font></td>
		<td align="right">
<font style="font-size: 10.0pt">721,155</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Senior Vice President and</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Chief Financial Officer</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Mark A. Sperry</font></p></td>
		<td align="right">
<font style="font-size: 10.0pt">613,990</font></td>
		<td align="right">
<font style="font-size: 10.0pt">558,173</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Senior Vice President and GM</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">of Continuous Power Division</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Gerard L. Conway, Jr.&nbsp;</font></p></td>
		<td align="right">
<font style="font-size: 10.0pt">475,962</font></td>
		<td align="right">
<font style="font-size: 10.0pt">&nbsp;432,693</font></td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Senior Vice President,
General</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
	<tr>
		<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">Counsel and Corporate
Secretary</font></p>
		</td>
		<td align="right">&nbsp;</td>
		<td align="right">&nbsp;</td>
	</tr>
</table>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 10.0pt">&nbsp;</font></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<b>Item&nbsp;5.03.&nbsp; Amendments to Articles of Incorporation
or Bylaws; Change in Fiscal Year</b></p>
<p style='margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";margin-top:4.5pt;margin-right:0in;margin-bottom:0in;margin-left:0in;
margin-bottom:.0001pt;text-indent:.5in'>On October 28, 2009, the Board of Directors
of the Company approved an amendment and restatement of the Company&#146;s By-laws
(the &#147;Restated By-laws&#148;), which amendment and restatement became effective
immediately.&nbsp; The Restated By-laws (i)&nbsp;eliminate the notice as a means to
properly bring business before an annual meeting of stockholders,
(ii)&nbsp;further clarify that the advance notice by-law provisions apply to
all stockholder proposals and nominations, (iii)&nbsp;require stockholders who
provide advance notice of proposals or nominations to disclose additional
information as part of such notice, including information as to whether the
stockholder has entered into any hedging, derivative or other transactions with
respect to the Company&#146;s securities and (iv) provide for electronic
transmission of communications.</p>
<p style='margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-right:0in; margin-top:0in' align="left">
&nbsp;</p><hr color="#000080">
<br clear=all
style='page-break-before:always'>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;line-height:13.0pt'>&nbsp;</p>
<p style='margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";margin-top:4.5pt;margin-right:0in;margin-bottom:0in;margin-left:0in;
margin-bottom:.0001pt;text-indent:.5in'>&nbsp;</p>
<p style='margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";margin-top:9.0pt;margin-right:0in;margin-bottom:0in;margin-left:0in;
margin-bottom:.0001pt;text-indent:.5in'>The description of the changes to the
Company&#146;s By-laws is qualified in its entirety by reference to the Third
Amended and Restated By-laws filed as Exhibit 3.1 to this Form 8-K, which are
incorporated by reference.&nbsp; A copy of the Third Amended and Restated By-laws
marked to show changes from the prior By-laws is filed as Exhibit 3.2 to this
Form 8-K.</p>
<p style='margin-right:0in;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";margin:0in;margin-bottom:.0001pt'>&nbsp;&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<b>Item 9.01.&nbsp; Financial Statements and Exhibits.</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<b>&nbsp;</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (d) Exhibits</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<div align=left>
	<table class=MsoTableGrid border=0 cellpadding=0
 style='border-collapse:collapse' width="100%">
		<tr>
			<td valign=bottom style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			<u>Exhibit Number</u></p>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			&nbsp;</p></td>
			<td valign=bottom style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			<u>Description</u></p>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			&nbsp;</p></td>
		</tr>
		<tr>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>3.1</p>
			</td>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			Third Amended
  and Restated By-laws of Plug Power Inc.</p></td>
		</tr>
		<tr>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>3.2</p>
			</td>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Third Amended and Restated By-laws of Plug Power Inc.
  (marked version)</p></td>
		</tr>
	</table></div>
<pre style='margin:0in;margin-bottom:.0001pt;font-size:10.0pt;font-family:"Courier New";margin-left:1.0in;text-indent:-1.0in'>&nbsp;</pre>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:1.5in;text-indent:-1.0in'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:1.5in;text-indent:-1.0in'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<hr color="#000080"><br clear=all
style='page-break-before:always'>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>SIGNATURE</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>Pursuant
to the requirements of the Securities Exchange Act of 1934, the Registrant has
duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;text-indent:.5in'>&nbsp;</p>
<div align="left">
	<table border="0" style="border-collapse: collapse" width="100%" id="table2" cellpadding="0">
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:justify;text-indent:.5in'>&nbsp;</p>
			</td>
			<td>PLUG POWER INC.</td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
			</td>
			<td>&nbsp;</td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
			</td>
			<td>&nbsp;</td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
			</td>
			<td>&nbsp;</td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-right:-18.2pt'>
Date:&nbsp;&nbsp;&nbsp; November 2, 2009</p></td>
			<td>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; By: <u>/s/ Gerard L. Conway, Jr.</u></td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
			</td>
			<td>Name:&nbsp; Gerard L. Conway, Jr.</td>
		</tr>
		<tr>
			<td>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
			</td>
			<td>Title:&nbsp;&nbsp;&nbsp; General Counsel</td>
		</tr>
	</table>
</div>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</p>
<p style='margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-right:0in; margin-top:0in' align="left">
<i>&nbsp;</i></p><hr color="#000080">
<br clear=all
style='page-break-before:always'>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>
<b>EXHIBIT INDEX</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<font style="font-size: 11.0pt">&nbsp;</font></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<div align=left>
	<table class=MsoTableGrid border=0 cellpadding=0
 style='border-collapse:collapse' width="100%">
		<tr>
			<td valign=bottom style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			<u>Exhibit Number</u></p>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			&nbsp;</p></td>
			<td valign=bottom style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			<u>Description</u></p>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
			&nbsp;</p></td>
		</tr>
		<tr>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>3.1</p>
			</td>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Third Amended and Restated By-laws of Plug Power Inc.</p>
			</td>
		</tr>
		<tr>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>3.2</p>
			</td>
			<td valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
			<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Third Amended and Restated By-laws of Plug Power Inc.
  (marked version)</p></td>
		</tr>
	</table></div>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>
<b>&nbsp;</b></p>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>

</body>

</html>
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{"company-data": {"conformed-name": "PLUG POWER INC", "cik": "0001093691", "assigned-sic": "3620", "irs-number": "223672377", "state-of-incorporation": "DE", "fiscal-year-end": "1210"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-34392", "film-number": "091151859"}, "business-address": {"street1": "968 ALBANY-SHAKER ROAD", "city": "LATHAM", "state": "NY", "zip": "12110", "phone": "5187827700"}, "mail-address": {"street1": "968 ALBANY-SHAKER ROAD", "city": "LATHAM", "state": "NY", "zip": "12110"}}
Prepared by E-Services - www.edgar2.com
UNITED STATES
SECURITIES AND
EXCHANGE COMMISSION
Washington, D.C. 
20549
FORM 8-K
CURRENT REPORT
Pursuant to
Section 13 or 15(d) of the
Securities
Exchange Act of 1934
Date of Report (Date
of earliest event reported)
October 28, 2009
PLUG POWER INC.
(Exact Name of
Registrant as Specified in Charter)
Delaware                             
        000-27527                                     22-3672377
(State or Other Jurisdiction                 (Commission
File Number)                      (IRS Employer
of Incorporation)                                                                                       Identification
No.)
968 Albany Shaker
Road, Latham, New York  12110
(Address of
Principal Executive Offices) (Zip Code)
Registrant's
telephone number, including area code: (518) 782-7700
_____________________________________________________
(Former Name or
Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the
registrant under any of the following provisions (
see
General
Instruction A.2. below):
o
Written
communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting
material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
240.14d-2(b))
o
Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
240.13e-4(c))
Item 5.02  Departure of Directors or Certain Officers;
Election of Directors; Appointment of Certain Officers; Compensatory
Arrangements of Certain Officers
On October 28, 2009,
the Compensation Committee of the Board of Directors of Plug Power Inc. (the "Company")
approved the grant of restricted stock units to a number of employees,
including each of the Company's executive officers.
Each of the Company's executive
officers received a long-term incentive award of performance-based restricted
stock units ("RSUs").  The RSUs will vest based upon the achievement, at the
threshold, target or stretch level, of certain performance targets for the
one-year periods ending December 31, 2010, 2011 and 2012 with respect to the
Company's revenues and earnings per share.  Achievement of the revenue target
in any year will result in the vesting of up to 25% of the RSUs subject to
vesting in such year.  Achievement of the earnings per share target in any year
will result in the vesting of up to 75% of the shares subject to vesting in
such year.  The percentage of the total RSUs subject to vesting each year is
20% for 2010, 25% for 2011 and 55% for 2012.  All RSUs earned based on
achievement of the performance targets for any year will vest within 75 days
after the end of such year.
The following table summarizes, for
each of the Company's Chief Executive Officer and four other named executive
officers, the total number of RSUs granted and the number of RSUs that would
vest if all performance targets are achieved at the target level:
Total Number
of RSUs Granted
Number of RSUs
Name and Title
(Number Vesting at Stretch Level)
Vesting at Target Level
Andrew Marsh
1,289,063
1,171,875
President and Chief
Executive Officer
Gerald A. Andersen
793,271
721,155
Senior Vice President and
Chief Financial Officer
Mark A. Sperry
613,990
558,173
Senior Vice President and GM
of Continuous Power Division
Gerard L. Conway, Jr.
475,962
432,693
Senior Vice President,
General
Counsel and Corporate
Secretary
Item 5.03.  Amendments to Articles of Incorporation
or Bylaws; Change in Fiscal Year
On October 28, 2009, the Board of Directors
of the Company approved an amendment and restatement of the Company's By-laws
(the "Restated By-laws"), which amendment and restatement became effective
immediately.  The Restated By-laws (i) eliminate the notice as a means to
properly bring business before an annual meeting of stockholders,
(ii) further clarify that the advance notice by-law provisions apply to
all stockholder proposals and nominations, (iii) require stockholders who
provide advance notice of proposals or nominations to disclose additional
information as part of such notice, including information as to whether the
stockholder has entered into any hedging, derivative or other transactions with
respect to the Company's securities and (iv) provide for electronic
transmission of communications.
The description of the changes to the
Company's By-laws is qualified in its entirety by reference to the Third
Amended and Restated By-laws filed as Exhibit 3.1 to this Form 8-K, which are
incorporated by reference.  A copy of the Third Amended and Restated By-laws
marked to show changes from the prior By-laws is filed as Exhibit 3.2 to this
Form 8-K.
Item 9.01.  Financial Statements and Exhibits.
(d) Exhibits
Exhibit Number
Description
3.1
Third Amended
  and Restated By-laws of Plug Power Inc.
3.2
Third Amended and Restated By-laws of Plug Power Inc.
  (marked version)
SIGNATURE
Pursuant
to the requirements of the Securities Exchange Act of 1934, the Registrant has
duly caused this report to be signed on its behalf by the undersigned hereunto
duly authorized.
PLUG POWER INC.
Date:    November 2, 2009
By:
/s/ Gerard L. Conway, Jr.
Name:  Gerard L. Conway, Jr.
Title:    General Counsel
EXHIBIT INDEX
Exhibit Number
Description
3.1
Third Amended and Restated By-laws of Plug Power Inc.
3.2
Third Amended and Restated By-laws of Plug Power Inc.
  (marked version)