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<title>Plub Power 8K</title>



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<div style='page:Section1;'>

<p style='margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:Times New Roman;margin-bottom:12.0pt; margin-left:0in; margin-right:0in; margin-top:0in'><b>&nbsp;</b></p>

<p style='margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:Times New Roman;margin-bottom:12.0pt; margin-left:0in; margin-right:0in; margin-top:0in'><b>&nbsp;</b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&nbsp;</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&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";line-height:1.0pt'>&nbsp;</p>

<p style='margin-bottom:.0001pt;text-align:center;font-family:Times New Roman;margin-bottom:12.0pt; margin-left:0in; margin-right:0in; margin-top:0in'><b>
<font size="4">UNITED STATES</font></b></p>

<p style='margin-bottom:.0001pt;text-align:center;font-family:Times New Roman;margin-bottom:12.0pt; margin-left:0in; margin-right:0in; margin-top:0in'><b>
<font size="4">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style='margin-top:0in;margin-right:0in;margin-bottom:24.0pt;margin-left:0in;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-bottom:12.0pt'>Washington, D.C. 20549</p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;'>_______________________________</p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:Arial;margin-bottom:12.0pt'>&nbsp;</p>

<p style='margin-bottom:.0001pt;text-align:center;font-family:Times New Roman;margin-bottom:12.0pt; margin-left:0in; margin-right:0in; margin-top:0in'><b>
<font size="4">FORM 8&#8209;K</font></b></p>

<p style='margin-top:0in;margin-right:0in;margin-bottom:24.0pt;margin-left:0in;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-bottom:12.0pt'>CURRENT REPORT</p>

<p style='margin-top:0in;margin-right:0in;margin-bottom:24.0pt;margin-left:0in;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-bottom:12.0pt'>Pursuant to Section 13 or
15(d) of the<br>
Securities Exchange Act of 1934</p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;'><i>__________________________________</i></p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;'>&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):&nbsp; <b><u>September 15, 2011</u></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";'>&nbsp;</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'><b>
	<font style="font-size: 14.0pt; text-decoration:underline">&nbsp;&nbsp;&nbsp;&nbsp; PLUG POWER INC.&nbsp;&nbsp;&nbsp;&nbsp; </font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-bottom:.25in'><font style="font-size: 10.0pt">(Exact
name of registrant as specified in charter)</font></p>

<div align="center">

<table class=MsoNormalTable border=0 cellpadding=0
 style='margin-left:0pt;border-collapse:collapse' width="100%">
 <tr>
  <td width="33%" valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
  <div style='border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center;border:none;
  padding:0in'><b>Delaware</b></p>
  </div>
  </td>
  <td width="34%" valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
  <div style='border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center;border:none;
  padding:0in'><b>1-34392</b></p>
  </div>
  </td>
  <td width="33%" valign=top style='padding-left:5.4pt; padding-right:5.4pt; padding-top:0in; padding-bottom:0in'>
  <div style='border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 1.0pt 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center;border:none;
  padding:0in'><b>22-3672377</b></p>
  </div>
  </td>
 </tr>
 <tr>
  <td width="33%" 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";text-align:center'>(State or Other
  Jurisdiction<br>
  of Incorporation)</p>
  </td>
  <td width="34%" 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";text-align:center'>(Commission File
  Number)</p>
  </td>
  <td width="33%" 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";text-align:center'>(IRS Employer<br>
  Identification No.)</p>
  </td>
 </tr>
</table>

</div>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-top:.25in'><u>968
  Albany Shaker Road, Latham, New York&nbsp; 12110<br>
</u><font style="font-size: 10.0pt">(Address of Principal Executive
Offices)&nbsp; (Zip Code)</font></p>

<p style='margin:0in;margin-bottom:.0001pt;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;margin-top:.25in'><u>(518)
782-7700<br>
</u><font style="font-size: 10.0pt">(Registrant&#146;s telephone number,
including area code)</font></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; </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;&nbsp;
<font face="Wingdings">o </font>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;&nbsp;
<font face="Wingdings">o </font>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">o </font>&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">o </font>&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: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";'><font style="font-size: 11.0pt">&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; </font></p>

<div style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>

<hr size=2 width="100%" noshade color=navy align=center>

</div>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&nbsp;</p>

</div>

<font face="Times New Roman">

<b><br clear=all
style='page-break-before:always'>
</b>

</font>

<div style='page:Section2;'>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&nbsp;</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&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";line-height:1.0pt'>&nbsp;</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><b>Item 7.01 &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Regulation
FD Disclosure</b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><b>&nbsp;</b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><font style="font-size: 10.0pt">Plug
Power Inc. has updated its standard investor presentation a copy of which is
attached to this report as Exhibit 99.1 and incorporated herein by reference.
The Reconciliation of Non-GAAP Measures table is referenced as Exhibit&nbsp; 99.2</font></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><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";text-autospace:none'><font style="font-size: 10.0pt">The
information set forth in this Item 7.01, including Exhibit 99.1 and 99.2 attached
hereto, is intended to be furnished and shall not be deemed &#147;filed&#148; for
purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the
&#147;Exchange Act&#148;), or otherwise subject to the liabilities of that section, nor
shall it be deemed incorporated by reference in any filing under the Securities
Act of 1933, as amended, or the Exchange Act, except as expressly set forth by
specific reference in such filing.</font></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><b><font style="font-size: 10.0pt">&nbsp;</font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><b><font style="font-size: 10.0pt">&nbsp;</font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'><b>Item 9.01 Financial Statements and Exhibits. </b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-autospace:none'><b>&nbsp;</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";'>(d)&nbsp;Exhibits.</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>

<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width="93%"
 style='width:93.0%;margin-left:.25in;border-collapse:collapse'>
 <tr>
  <td width="19%" valign=bottom style='width:19.24%;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'><b>Exhibit&nbsp;Number</b></p>
  </td>
  <td width="0%" valign=bottom style='width:.68%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'><b>&nbsp;</b></p>
  </td>
  <td width="80%" valign=bottom style='width:80.08%;border:none;border-bottom:
  solid windowtext 1.0pt;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'><b>Title</b></p>
  </td>
 </tr>
 <tr>
  <td width="19%" valign=top style='width:19.24%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td width="0%" valign=bottom style='width:.68%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td width="80%" valign=top style='width:80.08%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="19%" valign=top style='width:19.24%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>99.1</p>
  </td>
  <td width="0%" valign=bottom style='width:.68%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td width="80%" valign=top style='width:80.08%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Slide presentation dated September 2011</p>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
 </tr>
 <tr>
  <td width="19%" valign=top style='width:19.24%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>99.2</p>
  </td>
  <td width="0%" valign=bottom style='width:.68%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td width="80%" valign=top style='width:80.08%;padding:0in 0in 0in 0in'>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Reconciliation of Non-GAAP Measures</p>
  </td>
 </tr>
</table>

<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";'>&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>
<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";'>&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>
<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>

<div style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'>

<hr size=2 width="100%" noshade color=navy align=center>

</div>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&nbsp;</p>

</div>

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style='page-break-before:always'>


</font>


<div style='page:Section3;'>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&nbsp;</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";line-height:1.0pt'>&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";line-height:1.0pt'>&nbsp;</p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:1.0in;text-indent:-1.0in'>&nbsp;</p>

<p style='margin-top:0in;margin-right:0in;margin-bottom:24.0pt;margin-left:0in;text-align:center;font-size:12.0pt;font-family:"Times New Roman";font-weight:bold;'>SIGNATURES</p>

<p style='margin-top:0in;margin-right:0in;margin-bottom:6.0pt;margin-left:0in;text-indent:10.5pt;font-size:10.0pt;font-family:"Times New Roman";text-indent:.5in'><font style="font-size: 12.0pt">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.</font></p>
<p style='margin-top:0in;margin-right:0in;margin-bottom:6.0pt;margin-left:0in;text-indent:10.5pt;font-size:10.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
<p style='margin-top:0in;margin-right:0in;margin-bottom:6.0pt;margin-left:0in;text-indent:10.5pt;font-size:10.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>

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		<td width="40%">&nbsp;</td>
		<td width="60%">

<p style='margin-top:0;margin-bottom:0;page-break-after:avoid;font-size:12.0pt;font-family:"Times New Roman";page-break-after:auto'>PLUG POWER
INC.</p>

		</td>
	</tr>
	<tr>
		<td width="40%">&nbsp;</td>
		<td width="60%">

&nbsp;</td>
	</tr>
	<tr>
		<td width="40%">&nbsp;</td>
		<td width="60%">

&nbsp;

		</td>
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		<td width="60%">

&nbsp;</td>
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	<tr>
		<td width="40%">
		<p style="margin-top: 0; margin-bottom: 0">Date:&nbsp; September 15, 2011</td>
		<td width="60%">

<p style='margin-top:0in;margin-bottom:12.0pt;font-size:12.0pt;font-family:"Times New Roman";margin-top:0;margin-bottom:
0in;margin-bottom:0;'>By: <u>/s/ Andrew Marsh</u></p>

		</td>
	</tr>
	<tr>
		<td width="40%">&nbsp;</td>
		<td width="60%">

<p style='margin-top:0in;margin-bottom:12.0pt;font-size:12.0pt;font-family:"Times New Roman";margin-top:0;margin-bottom:
0in;margin-bottom:0;'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Andrew
Marsh</p>

		</td>
	</tr>
	<tr>
		<td width="40%">&nbsp;</td>
		<td width="60%">

<p style='margin-top:0in;margin-bottom:12.0pt;font-size:12.0pt;font-family:"Times New Roman";margin-top:0;margin-bottom:
0in;margin-bottom:0;'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Chief
Executive Officer</p>

		</td>
	</tr>
</table>

<pre style='margin:0in;margin-bottom:.0001pt;font-size:10.0pt;font-family:"Courier New";color:#000033;margin-left:.5in'>&nbsp;</pre>

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Plub Power 8K
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):
September 15, 2011
PLUG POWER INC.
(Exact
name of registrant as specified in charter)
Delaware
1-34392
22-3672377
(State or Other
  Jurisdiction
of Incorporation)
(Commission File
  Number)
(IRS Employer
Identification No.)
968
  Albany Shaker Road, Latham, New York  12110
(Address of Principal Executive
Offices)  (Zip Code)
(518)
782-7700
(Registrant's telephone number,
including area code)
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 7.01        Regulation
FD Disclosure
Plug
Power Inc. has updated its standard investor presentation a copy of which is
attached to this report as Exhibit 99.1 and incorporated herein by reference.
The Reconciliation of Non-GAAP Measures table is referenced as Exhibit  99.2
The
information set forth in this Item 7.01, including Exhibit 99.1 and 99.2 attached
hereto, is intended to be furnished and shall not be deemed "filed" for
purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the
"Exchange Act"), or otherwise subject to the liabilities of that section, nor
shall it be deemed incorporated by reference in any filing under the Securities
Act of 1933, as amended, or the Exchange Act, except as expressly set forth by
specific reference in such filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits.
Exhibit Number
Title
99.1
Slide presentation dated September 2011
99.2
Reconciliation of Non-GAAP Measures
SIGNATURES
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:  September 15, 2011
By:
/s/ Andrew Marsh
Andrew
Marsh
Chief
Executive Officer