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Originator-Name: webmaster@www.sec.gov
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<SEC-DOCUMENT>0001104659-10-051688.txt : 20101217
<SEC-HEADER>0001104659-10-051688.hdr.sgml : 20101217
<ACCEPTANCE-DATETIME>20101007210032
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-10-051688
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20101007

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ATLANTIC POWER CORP
		CENTRAL INDEX KEY:			0001419242
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC, GAS & SANITARY SERVICES [4900]
		IRS NUMBER:				550886410
		STATE OF INCORPORATION:			A1
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		FLOOR 25
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
		BUSINESS PHONE:		617-977-2701

	MAIL ADDRESS:	
		STREET 1:		200 CLARENDON STREET
		STREET 2:		FLOOR 25
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02116
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>

<html>

<head>






</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><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:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ATLANTIC POWER CORPORATION<br>
</font></b><font size="2" style="font-size:10.0pt;">200 Clarendon St., Floor 25<br>
Boston, Massachusetts 0211</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">October&nbsp;7
  2010</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">VIA
EDGAR AND FACSIMILE</font></u></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Scott
Anderegg</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Securities
and Exchange Commission</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Division
of Corporate Finance</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">100 F Street, N.E.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Washington, D.C. 20549</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Re:</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Atlantic Power Corporation (the &#147;Registrant&#148;)</font></b></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Registration Statement on Form&nbsp;S-1 (File
No.&nbsp;333-168855)</font></u></b></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Dear
Mr.&nbsp;Anderegg:</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to Rule&nbsp;461
under the Securities Act of 1933, as amended, the Registrant hereby requests
acceleration of effectiveness of its registration statement on Form&nbsp;S-1
(File No.&nbsp;333-168855) at 2:00&nbsp;p.m. Eastern Time on October&nbsp;13,
2010, or as soon as practicable thereafter. By separate letter, the
underwriters of the issuance of the securities being registered have joined in
this request for acceleration.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In connection with this
request, the Registrant acknowledges that:</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&nbsp; should the
Securities and Exchange Commission (the &#147;Commission&#148;) or the staff, acting
pursuant to delegated authority, declare the filing effective, it does not
foreclose the Commission from taking any action with respect to the filing;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)&nbsp; the action of the
Commission or the staff, acting pursuant to delegated authority, in declaring
the filing effective, does not relieve the Registrant from its full responsibility
for the adequacy and accuracy of the disclosure in the filing; and</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)&nbsp; the Registrant may
not assert staff comments and the declaration of effectiveness as a defense in
any proceeding initiated by the Commission or any person under the federal
securities laws of the United States.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="360" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Very
  truly yours,</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="360" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="360" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Atlantic
  Power Corporation</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="360" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="28" valign="top" style="padding:0in 0in 0in 0in;width:21.15pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="332" colspan="2" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:248.85pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/
  Patrick J. Welch</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="28" valign="top" style="padding:0in 0in 0in 0in;width:21.15pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="46" valign="top" style="border:none;padding:0in 0in 0in 0in;width:34.2pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="286" valign="top" style="border:none;border-top:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:214.65pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Patrick
  J. Welch</font></p>
  </td>
 </tr>
 <tr>
  <td width="360" valign="top" style="padding:0in 0in 0in 0in;width:3.75in;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="28" valign="top" style="padding:0in 0in 0in 0in;width:21.15pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="46" valign="top" style="padding:0in 0in 0in 0in;width:34.2pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="286" valign="top" style="padding:0in 0in 0in 0in;width:214.65pt;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief
  Financial Officer</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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