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<div style="font-family:Times New Roman;">
 <div style="border:none;border-top:double windowtext 6.0pt;padding:0pt 0pt 0pt 0pt;"> <p style="border:none;margin:0pt 0pt .0001pt;padding:0pt;"><a name="scotch"></a><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p> </div>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">UNITED STATES<br>
SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington,
DC 20549</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">FORM S-8</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">REGISTRATION
STATEMENT UNDER THE SECURITIES ACT OF 1933</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;">American DG Energy Inc.</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of registrant
as specified in its charter)</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="font-size:10.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlNoTableShading --><b>Delaware</b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">04-3569304</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of<br>
  incorporation or organization)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt .7pt;width:2.38%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0pt .7pt 0pt .7pt;width:48.8%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
</table>

</div>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">45 First Avenue<br>
Waltham, Massachusetts 02451</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of principal
executive offices)</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">American Distributed
Generation Inc. 2001 Stock Incentive Plan</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">American DG Energy Inc.
2005 Stock Incentive Plan</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Full title of the Plans)</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Anthony S. Loumidis</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">American DG Energy Inc.</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">45 First Avenue</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Waltham, Massachusetts
02451</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">(781) 622-1117</font></b></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name, address and
telephone number of agent for service)</font></p>

<div style="line-height:9.0pt;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><hr size="1" width="160" noshade color="black" align="center" style="width:120.0pt;"></div>

<p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Copy to:</font></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Edwin L. Miller Jr.</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sullivan &amp; Worcester
LLP</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">One Post Office Square</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Boston, MA 02109</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Tel: (617) 338-2800</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Fax:
(617) 338-2880</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">CALCULATION
OF REGISTRATION FEE</font></b></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="33%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:33.02%;">
  <p align="left" style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><!-- SET mrlNoTableShading -->Title&nbsp;of&nbsp;Each&nbsp;Class&nbsp;of<br>
  Securities&nbsp;to&nbsp;be&nbsp;Registered</p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="14%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:14.28%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Amount&nbsp;to&nbsp;be<br>
  Registered(</font></b><font face="Times New Roman">1)</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:14.28%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Proposed&nbsp;Maximum<br>
  Offering&nbsp;Price<br>
  Per&nbsp;Share</font></b><font face="Times New Roman">(2)</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:14.28%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Proposed&nbsp;Maximum<br>
  Aggregate<br>
  Offering Price(</font></b><font face="Times New Roman">2)</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:14.28%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Amount&nbsp;of<br>
  Registration&nbsp;Fee(</font></b><font face="Times New Roman">2)</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:.34%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="33%" valign="top" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:33.02%;">
  <p style="margin:0pt 0pt .0001pt 10.0pt;page-break-after:avoid;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Common
  Stock</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:double windowtext 2.25pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:none;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="14%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:14.28%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4,000,000
  shares</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:double windowtext 2.25pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:none;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="13%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:13.28%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">0.70</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:double windowtext 2.25pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:none;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="13%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:13.28%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2,800,000</font></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:double windowtext 2.25pt;border-left:none;border-right:solid windowtext 1.0pt;border-top:none;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:1.2%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt 0pt 0pt 0pt;width:1.0%;">
  <p align="left" style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:left;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="13%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0pt .7pt 0pt 0pt;width:13.28%;">
  <p style="margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">85.96</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:.34%;">
  <p style="margin:0pt 0pt .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="247" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="107" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
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  <td width="7" style="border:none;"></td>
  <td width="99" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="99" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="9" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
  <td width="99" style="border:none;"></td>
  <td width="2" style="border:none;"></td>
 </tr>
</table>

<p style="font-size:10.0pt;margin:0pt 0pt 12.0pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>In accordance with
Rule 416 under the Securities Act of 1933, as amended, this registration
statement shall be deemed to cover any additional securities that may from time
to time be offered or issued to prevent dilution resulting from stock splits,
stock dividends or similar transactions.</p>

<p style="font-size:10.0pt;margin:0pt 0pt .0001pt 20.0pt;text-indent:-20.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font>There
currently is no public market for the securities of the registrant. Estimated
solely for purposes of this offering under Rule 457(h)(1) and Rule 457(c) of
the Securities Act of 1933, as amended, the proposed maximum offering price per
share and the proposed maximum aggregate offering price have been determined
based on the book value of the common stock of American DG Energy Inc.,
computed as of October 11, 2007.</p>


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</div><br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART I</font></b><a name="PartI_181755"></a></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION
REQUIRED IN THE SECTION 10(a) PROSPECTUS</font></b><a name="InformationRequiredInTheSection10_181806"></a></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 1. Plan Information.</font></b><a name="Item1_PlanInformation__181807"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The information required by Item 1 is included in
documents sent or given to participants in the plans covered by this
registration statement pursuant to Rule&nbsp;428(b)(1) of the Securities Act of
1933 (the &#147;Securities Act&#148;).</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 2. Registrant Information and
Employee Plan Annual Information.</font></b><a name="Item2_RegistrantInformationAndEmp_181809"></a></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">The written statement required by
Item 2 is included in documents sent or given to participants in the plans
covered by this registration statement pursuant to Rule&nbsp;428(b)(1) of the
Securities Act.</font></b></p>

<p style="font-weight:bold;margin:0pt 0pt .0001pt;page-break-after:avoid;text-align:center;text-transform:uppercase;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-transform:none;">PART II</font><a name="PartIi_181810"></a></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;text-transform:uppercase;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-transform:none;">INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</font><a name="InformationRequiredInTheRegistrat_181815"></a></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">Item 3. Incorporation of Documents by Reference.</font><a name="Item3_IncorporationOfDocumentsByR_181818"></a></b></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following additional documents, which have been
filed by the registrant with the Securities and Exchange Commission under the
Securities Exchange Act of 1934 (the &#147;Exchange Act&#148;), are incorporated by
reference in and made a part of this registration statement, as of their
respective dates:</font></p>

<p style="margin:0pt 0pt 12.0pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Annual Report on Form 10-KSB for the
fiscal year ended December 31, 2006.</font></p>

<p style="margin:0pt 0pt 12.0pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Quarterly Report on Form 10-QSB for
the period ended March 31, 2007.</font></p>

<p style="margin:0pt 0pt 12.0pt 36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Quarterly Report on Form 10-QSB for
the period ended June 30, 2007.</font></p>

<h1 style="font-weight:normal;margin:0pt 0pt 12.0pt 36.0pt;page-break-after:avoid;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(d)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; The description of the registrant&#146;s common stock contained
in the registration statement on Form 10-SB filed with the Securities and
Exchange Commission on November 2, 2006, as amended, and all further amendments
or reports filed for the purpose of updating such description.</font></h1>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All documents subsequently filed by the registrant pursuant
to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing
of a post-effective amendment which indicates that all securities offered have
been sold or which deregisters all securities then remaining unsold, shall be
deemed to be incorporated by reference in this registration statement and to be
part hereof from the date of filing of such documents.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 4. Description of Securities.</font></b><a name="Item4_DescriptionOfSecurities__181820"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 5. Interests of Named Experts
and Counsel.</font></b><a name="Item5_InterestsOfNamedExpertsAndC_181820"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.<a name="NotApplicable__181821"></a></font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 6. Indemnification of Directors
and Officers.</font></b><a name="Item6_IndemnificationOfDirectorsA_181822"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Delaware General Corporation Law and the
registrant&#146;s charter and by-laws provide for indemnification of its directors
and officers for liabilities and expenses that they may incur in such
capacities.&#160; In general, directors and
officers are indemnified with respect to actions taken in good faith in a
manner reasonably believed to be in, or not opposed to, the best interests of
the registrant, and with respect to any criminal action or proceeding, actions
that the indemnitee had no reasonable cause to believe were unlawful.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The registrant also maintains directors and officers
liability insurance.</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 7. Exemption from Registration
Claimed.</font></b><a name="Item7_ExemptionFromRegistrationCl_181824"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 8. Exhibits.</font></b><a name="Item8_Exhibits__181829"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Exhibit Index immediately preceding the exhibits
is incorporated herein by reference.</font></p>

<p style="margin:0pt 0pt 12.0pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9. Undertakings.</font></b><a name="Item9_Undertakings__181840"></a></p>

<p style="margin:0pt 0pt 12.0pt;page-break-after:avoid;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">1.<font style="font-style:italic;"><i>&nbsp;&nbsp; Item
512(a) of Regulation&nbsp;S-K.</i></font>&nbsp;&nbsp; The undersigned registrant
hereby undertakes:</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To
file, during any period in which offers or sales are being made, a
post-effective amendment to this registration statement: <i>(i) </i>to include any prospectus required by
Section&nbsp;10(a)(3) of the Securities Act; <i>(ii)</i> to reflect in the prospectus any
facts or events arising after the effective date of the registration statement
(or the most recent post-effective amendment thereof) which, individually or in
the aggregate, represent a fundamental change in the information set forth in
the registration statement; and <i>(iii)</i> to include any material information
with respect to the plan of distribution not previously disclosed in the
registration statement or any material change to such information in the
registration statement; <i>provided</i>,
<i>however</i>, that paragraphs
(i)&nbsp;and (ii)&nbsp;do not apply if the information required to be included
in a post-effective amendment by those paragraphs is contained in reports filed
with or furnished to the Commission by the registrant pursuant to section 13 or
section 15(d) of the Exchange Act that are incorporated by reference in this
registration statement.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; That,
for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial <i>bona fide</i> offering thereof.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; To
remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the
offering.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(4)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Not
applicable.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(5)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Not
applicable.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(6)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Not
applicable.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2.<font style="font-style:italic;"><i>&nbsp;&nbsp; Item 512(b) of Regulation&nbsp;S-K.</i></font>&nbsp;&nbsp; The
undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the registrant&#146;s annual
report pursuant to Section&nbsp;13(a) or Section&nbsp;15(d) of the Exchange Act
that is incorporated by reference in the registration statement shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.<font style="font-style:italic;"><i>&nbsp;&nbsp; Item 512(h) of Regulation&nbsp;S-K.</i></font>&nbsp;&nbsp; Insofar as
indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the registrant
pursuant to the foregoing provisions, or otherwise, the registrant has been
advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses incurred or
paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;text-align:center;text-transform:uppercase;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;text-transform:none;">SIGNATURES</font><a name="Signatures_181850"></a></b></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:36.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements
of the Securities Act, the registrant certifies that it has reasonable grounds
to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this registration statement on Form S-8 to be signed on its behalf
by the undersigned, thereunto duly authorized, in Waltham, Massachusetts, on
October 11, 2007.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="50%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:50.48%;">
  <p style="font-size:10.0pt;margin:0pt 0pt .0001pt;"><!-- SET mrlNoTableShading --></p>
  </td>
  <td width="49%" colspan="2" valign="top" style="padding:0pt .7pt 0pt 0pt;width:49.52%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AMERICAN
  DG ENERGY INC.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="50%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:50.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="45%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:45.3%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="50%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:50.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="45%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:45.3%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ JOHN N. HATSOPOULOS</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="50%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:50.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="45%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:45.3%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John N. Hatsopoulos</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="50%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:50.48%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.22%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="45%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:45.3%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Executive Officer</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>

<p align="center" style="margin:0pt 0pt 12.0pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">POWER OF ATTORNEY AND SIGNATURES</font></b><a name="PowerOfAttorneyAndSignatures_181946"></a></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:72.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The undersigned officers and directors of the company hereby constitute
and appoint John N. Hatsopoulos, Barry J. Sanders and Anthony S. Loumidis, and
each of them singly, with full power of substitution, our true and lawful
attorneys-in-fact and agents to take any actions to enable the company to
comply with the Securities Act, and any rules, regulations and requirements of
the Commission, in connection with this registration statement, including the
power and authority to sign for us in our names in the capacities indicated
below any and all amendments to this registration statement and any other
registration statement filed pursuant to the provisions of Rule 462 under the
Securities Act.</font></p>

<p style="margin:0pt 0pt 12.0pt;text-indent:72.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p align="left" style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:left;"><!-- SET mrlNoTableShading -->Signature</p>
  </td>
  <td width="3%" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="41%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Title</font></b></p>
  </td>
  <td width="4%" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="15%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Date</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;/s/ GEORGE N. HATSOPOULOS</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chairman of the Board</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">George N.
  Hatsopoulos</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ JOHN N.
  HATSOPOULOS</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Executive Officer</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John N.
  Hatsopoulos</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Executive Officer)</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ ANTHONY S.
  LOUMIDIS</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Anthony S.
  Loumidis</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Financial &amp; Accounting Officer)</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ EARL R.
  LEWIS</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Earl R. Lewis</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ CHARLES T.
  MAXWELL</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Charles T.
  Maxwell</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ ALAN D.
  WEINSTEIN</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October 11, 2007</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="34%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:34.7%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Alan D.
  Weinstein</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:3.96%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="41%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:41.64%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:4.58%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="15%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:15.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p> <br><hr size="3" width="100%" noshade color="#010101" align="center">

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<br clear="all" style="page-break-before:always;">



<p style="margin:0pt 0pt 12.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:auto;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;">EXHIBIT INDEX</font><a name="ExhibitIndex_182104"></a></b></p>

<p style="font-weight:bold;margin:0pt 0pt 12.0pt;page-break-after:avoid;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:normal;">The following are the exhibits are to this
registration statement (all of which have been filed herewith):</font></b></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;font-family:Times New Roman;width:100.0%;">
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  <td width="7%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p style="font-size:8.0pt;font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><!-- SET mrlNoTableShading -->Exhibit No.</p>
  </td>
  <td width="2%" valign="bottom" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></b></p>
  </td>
  <td width="89%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p align="left" style="font-weight:bold;line-height:8.0pt;margin:0pt 0pt .0001pt;text-align:left;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;">Description</font></b></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.1</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#151;</font></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion of Sullivan &amp; Worcester LLP</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#151;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Sullivan &amp; Worcester LLP (contained
  in the opinion of Sullivan &amp; Worcester LLP filed herewith as Exhibit 5.1)</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#151;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Vitale, Caturano &amp; Co., Ltd.</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.3</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#151;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Carlin, Charron &amp; Rosen, LLP</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr style="page-break-inside:avoid;">
  <td width="7%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:7.92%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24</font></p>
  </td>
  <td width="2%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:2.98%;">
  <p align="center" style="margin:0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&#151;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0pt .7pt 0pt 0pt;width:89.1%;">
  <p style="margin:0pt 0pt .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Powers of Attorney (included in the signature page
  to this registration statement)</font></p>
  </td>
 </tr>
</table>

<p style="line-height:1.0pt;margin:0pt 0pt 12.0pt;"><font size="1" face="Times New Roman">&nbsp;</font></p>


 <p style="margin:24.0pt 0pt .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5</font></p>
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{"company-data": {"conformed-name": "AMERICAN DG ENERGY INC", "cik": "0001378706", "assigned-sic": "4900", "irs-number": "043569304", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-146628", "film-number": "071167341"}, "business-address": {"street1": "45 FIRST AVENUE", "city": "WALTHAM", "state": "MA", "zip": "02451", "phone": "781-622-1120"}, "mail-address": {"street1": "45 FIRST AVENUE", "city": "WALTHAM", "state": "MA", "zip": "02451"}}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington,
DC 20549
FORM S-8
REGISTRATION
STATEMENT UNDER THE SECURITIES ACT OF 1933
American DG Energy Inc.
(Exact name of registrant
as specified in its charter)
Delaware
04-3569304
(State or other
  jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
45 First Avenue
Waltham, Massachusetts 02451
(Address of principal
executive offices)
American Distributed
Generation Inc. 2001 Stock Incentive Plan
American DG Energy Inc.
2005 Stock Incentive Plan
(Full title of the Plans)
Anthony S. Loumidis
Chief Financial Officer
American DG Energy Inc.
45 First Avenue
Waltham, Massachusetts
02451
(781) 622-1117
(Name, address and
telephone number of agent for service)
Copy to:
Edwin L. Miller Jr.
Sullivan & Worcester
LLP
One Post Office Square
Boston, MA 02109
Tel: (617) 338-2800
Fax:
(617) 338-2880
CALCULATION
OF REGISTRATION FEE
Title of Each Class of
Securities to be Registered
Amount to be
Registered(
1)
Proposed Maximum
Offering Price
Per Share
(2)
Proposed Maximum
Aggregate
Offering Price(
2)
Amount of
Registration Fee(
2)
Common
  Stock
4,000,000
  shares
$
0.70
$
2,800,000
$
85.96
(1)
In accordance with
Rule 416 under the Securities Act of 1933, as amended, this registration
statement shall be deemed to cover any additional securities that may from time
to time be offered or issued to prevent dilution resulting from stock splits,
stock dividends or similar transactions.
(2)
There
currently is no public market for the securities of the registrant. Estimated
solely for purposes of this offering under Rule 457(h)(1) and Rule 457(c) of
the Securities Act of 1933, as amended, the proposed maximum offering price per
share and the proposed maximum aggregate offering price have been determined
based on the book value of the common stock of American DG Energy Inc.,
computed as of October 11, 2007.
PART I
INFORMATION
REQUIRED IN THE SECTION 10(a) PROSPECTUS
Item 1. Plan Information.
The information required by Item 1 is included in
documents sent or given to participants in the plans covered by this
registration statement pursuant to Rule 428(b)(1) of the Securities Act of
1933 (the "Securities Act").
Item 2. Registrant Information and
Employee Plan Annual Information.
The written statement required by
Item 2 is included in documents sent or given to participants in the plans
covered by this registration statement pursuant to Rule 428(b)(1) of the
Securities Act.
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
Item 3. Incorporation of Documents by Reference.
The following additional documents, which have been
filed by the registrant with the Securities and Exchange Commission under the
Securities Exchange Act of 1934 (the "Exchange Act"), are incorporated by
reference in and made a part of this registration statement, as of their
respective dates:
(a)           Annual Report on Form 10-KSB for the
fiscal year ended December 31, 2006.
(b)           Quarterly Report on Form 10-QSB for
the period ended March 31, 2007.
(c)           Quarterly Report on Form 10-QSB for
the period ended June 30, 2007.
(d)           The description of the registrant's common stock contained
in the registration statement on Form 10-SB filed with the Securities and
Exchange Commission on November 2, 2006, as amended, and all further amendments
or reports filed for the purpose of updating such description.
All documents subsequently filed by the registrant pursuant
to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act prior to the filing
of a post-effective amendment which indicates that all securities offered have
been sold or which deregisters all securities then remaining unsold, shall be
deemed to be incorporated by reference in this registration statement and to be
part hereof from the date of filing of such documents.
Item 4. Description of Securities.
Not applicable.
Item 5. Interests of Named Experts
and Counsel.
Not applicable.
Item 6. Indemnification of Directors
and Officers.
The Delaware General Corporation Law and the
registrant's charter and by-laws provide for indemnification of its directors
and officers for liabilities and expenses that they may incur in such
capacities.  In general, directors and
officers are indemnified with respect to actions taken in good faith in a
manner reasonably believed to be in, or not opposed to, the best interests of
the registrant, and with respect to any criminal action or proceeding, actions
that the indemnitee had no reasonable cause to believe were unlawful.
The registrant also maintains directors and officers
liability insurance.
2
Item 7. Exemption from Registration
Claimed.
Not applicable.
Item 8. Exhibits.
The Exhibit Index immediately preceding the exhibits
is incorporated herein by reference.
Item 9. Undertakings.
1.
Item
512(a) of Regulation S-K.
The undersigned registrant
hereby undertakes:
(1)           To
file, during any period in which offers or sales are being made, a
post-effective amendment to this registration statement:
(i)
to include any prospectus required by
Section 10(a)(3) of the Securities Act;
(ii)
to reflect in the prospectus any
facts or events arising after the effective date of the registration statement
(or the most recent post-effective amendment thereof) which, individually or in
the aggregate, represent a fundamental change in the information set forth in
the registration statement; and
(iii)
to include any material information
with respect to the plan of distribution not previously disclosed in the
registration statement or any material change to such information in the
registration statement;
provided
,
however
, that paragraphs
(i) and (ii) do not apply if the information required to be included
in a post-effective amendment by those paragraphs is contained in reports filed
with or furnished to the Commission by the registrant pursuant to section 13 or
section 15(d) of the Exchange Act that are incorporated by reference in this
registration statement.
(2)           That,
for the purpose of determining any liability under the Securities Act, each
such post-effective amendment shall be deemed to be a new registration
statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial
bona fide
offering thereof.
(3)           To
remove from registration by means of a post-effective amendment any of the
securities being registered which remain unsold at the termination of the
offering.
(4)           Not
applicable.
(5)           Not
applicable.
(6)           Not
applicable.
2.
Item 512(b) of Regulation S-K.
The
undersigned registrant hereby undertakes that, for purposes of determining any
liability under the Securities Act, each filing of the registrant's annual
report pursuant to Section 13(a) or Section 15(d) of the Exchange Act
that is incorporated by reference in the registration statement shall be deemed
to be a new registration statement relating to the securities offered therein,
and the offering of such securities at that time shall be deemed to be the
initial bona fide offering thereof.
3.
Item 512(h) of Regulation S-K.
Insofar as
indemnification for liabilities arising under the Securities Act may be
permitted to directors, officers and controlling persons of the registrant
pursuant to the foregoing provisions, or otherwise, the registrant has been
advised that in the opinion of the Commission such indemnification is against
public policy as expressed in the Securities Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such
liabilities (other than the payment by the registrant of expenses incurred or
paid by a director, officer or controlling person of the registrant in the
successful defense of any action, suit or proceeding) is asserted by such
director, officer or controlling person in connection with the securities being
registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of
appropriate jurisdiction the question whether such indemnification by it is
against public policy as expressed in the Securities Act and will be governed
by the final adjudication of such issue.
3
SIGNATURES
Pursuant to the requirements
of the Securities Act, the registrant certifies that it has reasonable grounds
to believe that it meets all of the requirements for filing on Form S-8 and has
duly caused this registration statement on Form S-8 to be signed on its behalf
by the undersigned, thereunto duly authorized, in Waltham, Massachusetts, on
October 11, 2007.
AMERICAN
  DG ENERGY INC.
By:
/s/ JOHN N. HATSOPOULOS
John N. Hatsopoulos
Chief Executive Officer
POWER OF ATTORNEY AND SIGNATURES
The undersigned officers and directors of the company hereby constitute
and appoint John N. Hatsopoulos, Barry J. Sanders and Anthony S. Loumidis, and
each of them singly, with full power of substitution, our true and lawful
attorneys-in-fact and agents to take any actions to enable the company to
comply with the Securities Act, and any rules, regulations and requirements of
the Commission, in connection with this registration statement, including the
power and authority to sign for us in our names in the capacities indicated
below any and all amendments to this registration statement and any other
registration statement filed pursuant to the provisions of Rule 462 under the
Securities Act.
Pursuant to the requirements of the Securities Act of 1933, this
registration statement has been signed by the following persons in the
capacities and on the dates indicated.
Signature
Title
Date
/s/ GEORGE N. HATSOPOULOS
Chairman of the Board
October 11, 2007
George N.
  Hatsopoulos
/s/ JOHN N.
  HATSOPOULOS
Chief Executive Officer
October 11, 2007
John N.
  Hatsopoulos
(Principal Executive Officer)
/s/ ANTHONY S.
  LOUMIDIS
Chief Financial Officer
October 11, 2007
Anthony S.
  Loumidis
(Principal Financial & Accounting Officer)
/s/ EARL R.
  LEWIS
Director
October 11, 2007
Earl R. Lewis
/s/ CHARLES T.
  MAXWELL
Director
October 11, 2007
Charles T.
  Maxwell
/s/ ALAN D.
  WEINSTEIN
Director
October 11, 2007
Alan D.
  Weinstein
4
EXHIBIT INDEX
The following are the exhibits are to this
registration statement (all of which have been filed herewith):
Exhibit No.
Description
5.1
—
Opinion of Sullivan & Worcester LLP
23.1
—
Consent of Sullivan & Worcester LLP (contained
  in the opinion of Sullivan & Worcester LLP filed herewith as Exhibit 5.1)
23.2
—
Consent of Vitale, Caturano & Co., Ltd.
23.3
—
Consent of Carlin, Charron & Rosen, LLP
24
—
Powers of Attorney (included in the signature page
  to this registration statement)
5