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<title>Plug Power 8-K</title>


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<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b><font style="font-size: 13.5pt">&nbsp;</font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b><font style="font-size: 13.5pt">&nbsp;</font></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:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b><font style="font-size: 13.5pt">UNITED STATES</font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b><font style="font-size: 13.5pt">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b>Washington,
D.C. 20549</b></p>

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

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

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b><font style="font-size: 18.0pt">FORM 8&#8209;K</font></b></p>

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

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:12.0pt;text-align:center'><b>Pursuant
to Section 13 or 15(d) of the<br>
Securities Exchange Act of 1934</b></p>

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

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";text-align:center'><b>&nbsp;</b></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; March 23, 2012</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>

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

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  <td width=174 valign=top style='width:33%;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'><b>Delaware</b></p>
  </td>
  <td width=213 valign=top style='width:34%;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'><b>1-34392</b></p>
  </td>
  <td width=182 valign=top style='width:33%;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'><b>22-3672377</b></p>
  </td>
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  <td width=174 valign=top style='width:33%;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 <br>
  Jurisdiction<br>
  of Incorporation)</p>
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  <td width=213 valign=top style='width:34%;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=182 valign=top style='width:33%;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>
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<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-top:.25in;text-align:center'><b><u>968
Albany Shaker Road, Latham, New York&nbsp; 12110<br>
</u></b><b><font style="font-size: 10.0pt">(Address of Principal Executive
Offices)&nbsp; (Zip Code)</font></b></p>

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

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

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<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;&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;&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>
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2</p>

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<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";'><b>Item 3.03&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Material Modification to Rights of
Security Holders.</b></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-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>On March 23, 2012, the Board of
Directors of Plug Power Inc. (the &#147;<u>Company</u>&#148;) approved an amendment to
our Shareholder Rights Agreement dated as of June 23, 2009 (the &#147;<u>Rights
Amendment</u>&#148;), to exempt affiliates and associates of AWM Investments
Company, including but not limited to Special Situations Technology Fund,
L.P.,&nbsp; Special Situations Technology Fund II, L.P., and Special Situations
Private Equity Fund, L.P., from purchasing shares of the Company&#146;s common stock in
the public offering announced on March 22, 2012, so long as such purchasers and
their affiliates and associates do not at any time beneficially own shares of our common
stock equaling or exceeding three percent more than the percentage of the then outstanding
shares of common stock beneficially owned by such purchasers and their
affiliates and associates immediately following the closing of the offering.&nbsp;
As a result, such ownership by any such purchaser will not trigger the
exercisability of the preferred share purchase rights that would give each
holder the right to receive upon exercise one ten-thousandth of a share of our
Series A Junior Participating Cumulative Preferred Stock.&nbsp; A copy of the
amendment will be filed in an amendment to this Current Report on Form 8-K.</p>
<p style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
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<p style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
<p style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>
<p style='margin-top:0in;margin-right:0in;margin-bottom:12.0pt;margin-left:0in;font-size:12.0pt;font-family:"Times New Roman";text-indent:.5in'>&nbsp;</p>

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3</p>

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<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-bottom:12.0pt'><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";margin-bottom:24.0pt;text-align:center'><b>SIGNATURES</b></p>

<p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-bottom:6.0pt;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";margin-bottom:6.0pt;text-indent:.5in'><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";margin-bottom:6.0pt;text-indent:.5in'><font style="font-size: 10.0pt">&nbsp;</font></p>

<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0 width="100%"
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  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td style='padding:0in 0in 0in 0in' width="60%">
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:13.65pt'>PLUG POWER INC.</p>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:13.65pt'>&nbsp; </p>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:13.65pt'>&nbsp; </p>
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  <td style='padding:0in 0in 0in 0in' width="40%">
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>Date:&nbsp; March 23, 2012</p>
  </td>
  <td style='padding:0in 0in 0in 0in' width="60%">
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:13.65pt'>By: <u>&nbsp; /s/ Andrew Marsh&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </u></p>
  </td>
 </tr>
 <tr>
  <td style='padding:0in 0in 0in 0in' width="40%">
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
  </td>
  <td style='padding:0in 0in 0in 0in' width="60%">
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:36.35pt'>Andrew Marsh</p>
  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";margin-left:36.35pt'>Chief Executive Officer.</p>
  </td>
 </tr>
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  <p style='margin:0in;margin-bottom:.0001pt;font-size:12.0pt;font-family:"Times New Roman";'>&nbsp;</p>
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  </td>
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4</p>

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Plug Power 8-K
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):  March 23, 2012
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))
2
Item 3.03        Material Modification to Rights of
Security Holders.
On March 23, 2012, the Board of
Directors of Plug Power Inc. (the "
Company
") approved an amendment to
our Shareholder Rights Agreement dated as of June 23, 2009 (the "
Rights
Amendment
"), to exempt affiliates and associates of AWM Investments
Company, including but not limited to Special Situations Technology Fund,
L.P.,  Special Situations Technology Fund II, L.P., and Special Situations
Private Equity Fund, L.P., from purchasing shares of the Company's common stock in
the public offering announced on March 22, 2012, so long as such purchasers and
their affiliates and associates do not at any time beneficially own shares of our common
stock equaling or exceeding three percent more than the percentage of the then outstanding
shares of common stock beneficially owned by such purchasers and their
affiliates and associates immediately following the closing of the offering. 
As a result, such ownership by any such purchaser will not trigger the
exercisability of the preferred share purchase rights that would give each
holder the right to receive upon exercise one ten-thousandth of a share of our
Series A Junior Participating Cumulative Preferred Stock.  A copy of the
amendment will be filed in an amendment to this Current Report on Form 8-K.
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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:  March 23, 2012
By:
/s/ Andrew Marsh
Andrew Marsh
Chief Executive Officer.
4