<SEC-DOCUMENT>0001104659-21-066496.txt : 20210514
<SEC-HEADER>0001104659-21-066496.hdr.sgml : 20210514
<ACCEPTANCE-DATETIME>20210514092410
ACCESSION NUMBER:		0001104659-21-066496
CONFORMED SUBMISSION TYPE:	S-8 POS
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210514
DATE AS OF CHANGE:		20210514
EFFECTIVENESS DATE:		20210514

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:		S-8 POS
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-172926
		FILM NUMBER:		21922214

	BUSINESS ADDRESS:	
		STREET 1:		3 ALLIED DRIVE
		STREET 2:		SUITE 155
		CITY:			DEDHAM
		STATE:			MA
		ZIP:			02026
		BUSINESS PHONE:		617-977-2400

	MAIL ADDRESS:	
		STREET 1:		3 ALLIED DRIVE
		STREET 2:		SUITE 155
		CITY:			DEDHAM
		STATE:			MA
		ZIP:			02026
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8 POS
<SEQUENCE>1
<FILENAME>tm2116319d2_s8pos.htm
<DESCRIPTION>S-8 POS
<TEXT>
<HTML>
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     <TITLE></TITLE>
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<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="text-align: center; margin-top: 0; margin-bottom: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange Commission
on May 14, 2021 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-172926</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-197940</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: right"><B>Registration No. 333-219001</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>&nbsp;&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"></P>

<!-- Field: Rule-Page --><DIV STYLE="margin-top: 0; margin-bottom: 0; width: 100%"><DIV STYLE="font-size: 1pt; border-top: Black 2pt solid; border-bottom: Black 1pt solid">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;<B>&nbsp;</B></P>



<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES </B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Washington, DC 20549</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>______________________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>POST-EFFECTIVE AMENDMENT NO. 1 TO:</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Form S-8 Registration Statement No. 333-172926</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Form S-8 Registration Statement No. 333-197940</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Form S-8 Registration Statement No. 333-219001</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNDER </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>THE SECURITIES ACT OF 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>______________________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATLANTIC POWER CORPORATION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Exact name of registrant as specified in its charter)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>______________________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR>
    <TD STYLE="vertical-align: top; text-align: center; width: 49%"><B>British Columbia, Canada</B></TD>
    <TD STYLE="vertical-align: bottom; width: 2%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: center; width: 49%"><B>55-0886410</B></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(State or other jurisdiction of</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">incorporation or organization)</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P></TD>
    <TD STYLE="vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: top">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(I.R.S. Employer</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Identification No.)</P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; padding-bottom: 1pt; text-align: center"><B>3 Allied Drive, Suite 155, Dedham, MA</B></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center"><B>02026</B></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-size: 10pt">(Address of Principal Executive Offices)</FONT></TD>
    <TD STYLE="vertical-align: bottom"><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-size: 10pt">(Zip Code)</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>______________________</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATLANTIC POWER HOLDINGS, INC. THIRD AMENDED
AND RESTATED LONG-TERM INCENTIVE PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>ATLANTIC POWER HOLDINGS, INC. FIFTH AMENDED
AND RESTATED LONG-TERM INCENTIVE PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Full title of the plans)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Terrence Ronan<BR>
Chief Financial Officer</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Atlantic Power Corporation<BR>
3 Allied Drive, Suite 155<BR>
Dedham, Massachusetts 02026<BR>
(617) 977-2400 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Name, address and telephone number, including
area code, of agent for service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I><BR>
</I>Copies to:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Craig B. Brod</B></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Benet J. O&rsquo;Reilly<BR>
    Cleary Gottlieb Steen &amp; Hamilton LLP<BR>
    One Liberty Plaza<BR>
    New York, New York 10006<BR>
    (212) 225-2000</B></P></TD>
    <TD STYLE="width: 50%; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>William Gorman<BR>
Goodmans LLP<BR>
Bay Adelaide Centre-West Tower<BR>
333 Bay Street, Suite 3400<BR>
Toronto, Ontario M5H 2S7<BR>
(416) 979-2211</B></FONT></TD></TR>
  </TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;<B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of
 &ldquo;large accelerated filer,&rdquo; &ldquo;accelerated filer,&rdquo; &ldquo;smaller reporting company,&rdquo; and &ldquo;emerging growth
company&rdquo; in Rule 12b-2 of the Exchange Act (Check one):</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 21%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Large accelerated filer</FONT></TD>
    <TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 49%"><FONT STYLE="font-family: Wingdings; font-size: 10pt">&uml;</FONT></TD>
    <TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 26%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Accelerated filer</FONT></TD>
    <TD STYLE="width: 1%">&nbsp;</TD>
    <TD STYLE="width: 1%"><FONT STYLE="font-family: Wingdings; font-size: 10pt">x</FONT></TD></TR>
  <TR>
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Non-accelerated filer</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Wingdings">&#168;</FONT> (Do not check if a smaller reporting company)<FONT STYLE="font-family: Wingdings; font-size: 10pt"></FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Smaller reporting company</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Wingdings; font-size: 10pt">x</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Emerging growth company</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-family: Wingdings; font-size: 10pt">&uml;</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><FONT STYLE="font-family: Times New Roman, Times, Serif">If an emerging
growth company, indicate by check mark if the registrant has elected not to use the extended transition period for &nbsp;complying with
any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. </FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;<B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>DEREGISTRATION OF SECURITIES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 24.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">This Post-Effective Amendment No. 1 relates to
the following Registration Statements on Form S-8 (collectively, the &ldquo;Registration Statements&rdquo;) of Atlantic Power Corporation,
a corporation continued under the laws of British Columbia (the &ldquo;Registrant&rdquo;), filed with the Securities and Exchange Commission
(the &ldquo;SEC&rdquo;) and is being filed to deregister any and all securities that remain unsold or otherwise unissued under such Registration
Statements:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><A HREF="http://www.sec.gov/Archives/edgar/data/1419242/000110465911015323/a11-8096_1s8.htm" STYLE="-sec-extract: exhibit">Registration No. 333-172926, filed with the SEC on March 18, 2011</A>, pertaining to the registration of an aggregate of 1,000,000 of
the Registrant&rsquo;s common shares, no par value (&ldquo;Common Shares&rdquo;) and the associated share purchase rights (the &ldquo;Rights&rdquo;),
under the Atlantic Power Holdings, Inc. Third Amended and Restated Long-Term Incentive Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><A HREF="http://www.sec.gov/Archives/edgar/data/1419242/000110465914058309/a14-18372_1s8.htm" STYLE="-sec-extract: exhibit">Registration No. 333-197940, filed with the SEC on August 7, 2014</A>, pertaining to the registration of an aggregate of 2,000,000 of
the Registrant&rsquo;s Common Shares and Rights under the Atlantic Power Holdings, Inc. Fifth Amended and Restated Long-Term Incentive
Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.25in"></TD><TD STYLE="width: 0.25in"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD><A HREF="http://www.sec.gov/Archives/edgar/data/1419242/000110465917041845/a17-15766_1s8.htm" STYLE="-sec-extract: exhibit">Registration No. 333-219001, filed with the SEC on June 27, 2017</A>, pertaining to the registration of an aggregate of 3,000,000 of the
Registrant&rsquo;s Common Shares and Rights under the Atlantic Power Holdings, Inc. Fifth Amended and Restated Long-Term Incentive Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">On May 14, 2021, pursuant to an Arrangement
Agreement and Plan of Arrangement, dated as of January 14, 2021, by and among the Registrant, Atlantic Power Preferred Equity Ltd., an
corporation continued to the jurisdiction of British Columbia, Atlantic Power Limited Partnership, an Ontario limited partnership, Tidal
Power Holdings Limited, a United Kingdom private limited company (&ldquo;BidCo&rdquo;), and Tidal Power Aggregator, LP, a Cayman Islands
limited partnership (the &ldquo;Arrangement Agreement&rdquo;), BidCo acquired all outstanding Common Shares (the &ldquo;Arrangement&rdquo;).</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">As a result of the Arrangement, the Registrant
has terminated all offerings of the Registrant&rsquo;s securities pursuant to its existing registration statements under the Securities
Act of 1933, as amended, including the Registration Statements. In accordance with undertakings made by the Registrant in the Registration
Statements to remove from registration, by means of a post-effective amendment, any of the securities that had been registered for issuance
that remain unsold at the termination of the offering, the Registrant hereby removes from registration all of such securities of the Registrant
registered but not sold or otherwise issued under the Registration Statements, if any, as of the date hereof. Each Registration Statement
is hereby amended, as appropriate, to reflect the deregistration of such securities, and the Registrant hereby terminates the effectiveness
of each Registration Statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">Pursuant to the requirements of the Securities
Act of 1933, 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 Post-Effective Amendment No. 1 to the Registration Statements on Form S-8 to be signed on its behalf by the
undersigned, thereunto duly authorized, in the Town of Dedham, Commonwealth of Massachusetts, on May 14, 2021.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in"></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD COLSPAN="3">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; font-size: 10pt">&nbsp;</TD>
    <TD COLSPAN="2"><B>ATLANTIC POWER CORPORATION</B></TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-align: center; font-size: 10pt">&nbsp;</TD></TR>
  <TR>
    <TD STYLE="vertical-align: top; width: 50%; font-size: 10pt"></TD>
    <TD STYLE="width: 5%"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">By:</FONT></TD>
    <TD STYLE="border-bottom: Black 1pt solid; vertical-align: bottom; width: 45%; text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ TERRENCE RONAN</FONT></TD></TR>
  <TR STYLE="vertical-align: bottom">
    <TD STYLE="font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center; font-size: 10pt"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Terrence Ronan</FONT></TD></TR>
  <TR>
    <TD STYLE="vertical-align: bottom; font-size: 10pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="vertical-align: top">
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>Executive Vice President and Chief Financial
    Officer</I></P>
    <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><I>(Principal Financial and Accounting Officer)</I></P></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in"><B></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; width: 32%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Signature</B></FONT></TD>
    <TD STYLE="width: 1%; text-align: center">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; width: 38%; text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Title</B></FONT></TD>
    <TD STYLE="width: 1%; text-align: center">&nbsp;</TD>
    <TD STYLE="border-bottom: black 1pt solid; width: 28%; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>Date</B></FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ James J. Moore, Jr.</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">President, Chief Executive
Officer and Director</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">May 14, 2021</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">James J. Moore, Jr.</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(principal executive officer)</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Terrence Ronan</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Executive Vice President and Chief Financial Officer</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">May 14, 2021</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Terrence Ronan</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(principal financial and accounting officer)</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Kevin T. Howell</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Chairman of the Board</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">May 14, 2021</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Kevin T. Howell</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Richard Foster Duncan</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">May 14, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Richard Foster Duncan</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Danielle S. Mottor</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">May 14, 2021</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Danielle S. Mottor</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: black 1pt solid; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Gilbert S. Palter</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Director</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">May 14, 2021</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Gilbert S. Palter</FONT></TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: left">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD>
    <TD STYLE="text-align: center">&nbsp;</TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURE OF AUTHORIZED U.S. REPRESENTATIVE
OF THE REGISTRANT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">Pursuant to the Securities Act, the undersigned,
the duly authorized representative in the U.S. of Atlantic Power Corporation, has signed this registration statement or amendment thereto
on May 14, 2021.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.25in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
  <TR STYLE="vertical-align: top">
    <TD STYLE="text-align: left; width: 50%; padding-right: 5.4pt; padding-left: 5.4pt"></TD>
    <TD STYLE="width: 5%"><FONT STYLE="font: 10pt Times New Roman, Times, Serif">By:&nbsp;</FONT></TD>
    <TD STYLE="width: 45%; border-bottom: black 1pt solid; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">/s/ Terrence Ronan</FONT></TD></TR>
  <TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Terrence Ronan</FONT></TD></TR>
  </TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;&nbsp;</P>

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    <!-- Field: /Page -->

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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