<SEC-DOCUMENT>0001104659-13-053287.txt : 20130705
<SEC-HEADER>0001104659-13-053287.hdr.sgml : 20130704
<ACCEPTANCE-DATETIME>20130703203143
ACCESSION NUMBER:		0001104659-13-053287
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20130703
FILED AS OF DATE:		20130705
DATE AS OF CHANGE:		20130703

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSALTA CORP
		CENTRAL INDEX KEY:			0001144800
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC SERVICES [4911]
		IRS NUMBER:				000000000
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-15214
		FILM NUMBER:		13954652

	BUSINESS ADDRESS:	
		STREET 1:		110 12TH AVE SW BOX 1900 STATION M
		STREET 2:		CALGARY ALBERTA T2P 2MI
		CITY:			CALGARY
		STATE:			A0
		ZIP:			T2P2M1
		BUSINESS PHONE:		403-267-4724

	MAIL ADDRESS:	
		STREET 1:		110-12TH AVENUE SW
		CITY:			CALGARY ALBERTA CANADA
		STATE:			A0
		ZIP:			T2P2M1
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>a13-16194_16k.htm
<DESCRIPTION>6-K
<TEXT>


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<p align="center" style="margin:0in 0in .0001pt;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:0in 0in .0001pt;text-align:center;"><b><font size="4" face="Times New Roman" style="font-size:14.0pt;font-weight:bold;">UNITED STATES<br> SECURITIES AND EXCHANGE COMMISSION<br> Washington, D.C. 20549</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="4" face="Times New Roman" style="font-size:14.0pt;font-weight:bold;">FORM&nbsp;6-K</font></b></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">For the month of July, 2013</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;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">TRANSALTA CORPORATION</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Translation of registrant&#146;s name into English)</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:11.0pt;font-weight:bold;">110-12</font></b><b><font size="1" style="font-size:7.0pt;font-weight:bold;position:relative;top:-3.0pt;">th</font></b><b><font size="2" style="font-size:11.0pt;font-weight:bold;">&#160;Avenue S.W., Box 1900, Station &#147;M&#148;, Calgary, Alberta, T2P 2M1</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">(Address of principal executive offices)</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Indicate by check mark whether the registrant files or will file annual reports under cover Form&nbsp;20-F or Form&nbsp;40-F.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Form 20-F____</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Form 40-F&nbsp;&nbsp;&nbsp; <u>X</u>&nbsp;&nbsp;&nbsp;&nbsp; </font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Indicate by check mark if the registrant is submitting the Form&nbsp;6-K in paper as permitted by Regulation S-T Rule&nbsp;101(b)(1): ____</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Indicate by check mark if the registrant is submitting the Form&nbsp;6-K in paper as permitted by Regulation S-T Rule&nbsp;101(b)(7): ____</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">I</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">The document listed below in this Section&nbsp;as 99.1 is being furnished, not filed, and will not be incorporated by reference into any registration statement filed by TransAlta Corporation under the Securities Act of 1933, as amended.</font></p>
<p style="margin:0in 0in .0001pt 40.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 40.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 40.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">99.1</font></p>    </td>
<td width="84%" valign="top" style="padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Material Change Report dated July&nbsp;3, 2013</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt 40.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="4" face="Times New Roman" style="font-size:14.0pt;font-weight:bold;">Signatures</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.</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;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="50%" colspan="3" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
<p style="margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">TransAlta Corporation</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">&nbsp;</font></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.76%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">By:</font></p>    </td>
<td width="23%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:23.76%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">/s/ <i>Maryse St.-Laurent</i></font></p>    </td>
<td width="22%" valign="top" style="padding:0in 0in 0in 0in;width:22.5%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.76%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="46%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:46.26%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Maryse St.-Laurent</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.76%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="46%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:46.26%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Vice-President and   Corporate Secretary</font></p>    </td>   </tr>  </table>
<p style="margin:0in 0in .0001pt 301.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 301.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 301.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 301.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt 301.5pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Date: July&nbsp;3, 2013</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">EXHIBIT&nbsp;INDEX</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">99.1</font></p>    </td>
<td width="84%" valign="top" style="padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">Material Change Report dated July&nbsp;3, 2013</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>
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<TYPE>EX-99.1
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<DESCRIPTION>EX-99.1
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<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Exhibit&nbsp;99.1</font></b></p>
<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Form&nbsp;51-102F3</font></b></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">MATERIAL CHANGE REPORT</font></b></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 1.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Name and Address of   Company</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:1.0pt;">&nbsp;</font></p>    </td>
<td width="84%" valign="top" style="padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">TransAlta Corporation</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">110 &#150; 12</font><font size="1" face="Arial" style="font-size:5.5pt;position:relative;top:-4.0pt;">th</font><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;Avenue SW</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Calgary, Alberta&nbsp; T2P 2M1</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>
<td width="84%" valign="top" style="padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 2.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Date of Material Change</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
<td width="84%" valign="top" style="padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">June&nbsp;26, 2013</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 3.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">News Release</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Press releases disseminated via   Marketwire on June&nbsp;26, 2013</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 4.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Summary of Material   Change</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">TransAlta   Corporation </font><font size="2" face="Arial" style="font-size:11.0pt;">announced on June&nbsp;26, 2013 that it is creating   TransAlta Renewables Inc. (&#147;TransAlta Renewables&#148;), providing investors with   the opportunity to invest directly in a highly contracted portfolio of   renewable power generation facilities. TransAlta will be the sponsor and   manager of TransAlta Renewables and will provide TransAlta Renewables with   its initial asset base. A preliminary prospectus qualifying the initial   public offering of TransAlta Renewables common shares to the public (the &#147;Offering&#148;)   was also filed on June&nbsp;26, 2013.&nbsp;&nbsp;   </font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 5.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Full Description of   Material Change</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">TransAlta   Corporation </font><font size="2" face="Arial" style="font-size:11.0pt;">announced on June&nbsp;26, 2013 that it is creating   TransAlta Renewables Inc. (&#147;TransAlta Renewables&#148;), providing investors with   the opportunity to invest directly in a highly contracted portfolio of   renewable power generation facilities. TransAlta will be the sponsor and   manager of TransAlta Renewables and will provide TransAlta Renewables with   its initial asset base. A preliminary prospectus qualifying the initial   public offering of TransAlta Renewables common shares to the public (the &#147;Offering&#148;)   was also filed on June&nbsp;26, 2013.</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="2" face="Arial" style="font-size:11.0pt;">TransAlta   intends to transfer </font><font size="2" face="Arial" style="font-size:11.0pt;">1,112   net MW of highly contracted wind and hydro power generation assets to   TransAlta Renewables upon completion of the Offering.</font><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp; TransAlta will be the primary source of   growth of TransAlta Renewables&#146; portfolio of renewable power generation   assets, by providing TransAlta Renewables with the opportunity to purchase,   or participate in the development of, renewable power generation facilities   with stable, long-term, contracted cash flows.&nbsp; TransAlta will continue to grow its   renewables portfolio through greenfield development and acquisitions.&nbsp; TransAlta will provide TransAlta Renewables   the opportunity to participate in those projects that meet the objectives of   TransAlta Renewables.</font></p>    </td>   </tr>  </table>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">1<a name="PB_1_050215_5335"></a></font></p>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="2" face="Arial" style="font-size:11.0pt;">Upon   completion of the Offering, TransAlta expects to hold an approximate 80-85%   interest in TransAlta Renewables.&nbsp;   TransAlta also expects to receive cash proceeds of approximately   $200-$250 million, depending on the size of the Offering, w</font><font size="2" face="Arial" style="font-size:11.0pt;">hich will be used to reduce debt and support TransAlta&#146;s   balance sheet.&nbsp; TransAlta will provide   all management, administrative and operational services r</font><font size="2" face="Arial" style="font-size:11.0pt;">equired   for TransAlta Renewables to operate, administer its assets and acquire   additional assets.</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;text-align:justify;"><font size="2" face="Arial" style="font-size:11.0pt;">Completion of the Offering is subject to, and conditional   upon, the receipt of all necessary approvals, including regulatory approvals.   The Offering is expected to close in August&nbsp;2013.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 6.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Reliance on Section&nbsp;7.1(2)&nbsp;of   National Instrument 51-102</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Not applicable.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 7.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Omitted Information</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
<td width="84%" height="1" valign="top" style="height:1.0pt;padding:0in .5pt 0in .5pt;width:84.78%;">
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Not applicable.</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 8.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Executive Officer</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">The name and business number of   the executive officer who is knowledgeable about the material change and this   report is:</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Maryse St.-Laurent</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Vice-President and Corporate   Secretary</font></p>
<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">Telephone:&nbsp; (403) 267-7110</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">&nbsp;</font></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Item 9.</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:11.0pt;font-weight:bold;">Date of Report</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="1" face="Arial" style="font-size:6.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><b><font size="1" face="Arial" style="font-size:6.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>   </tr>
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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Arial" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>    </td>
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<p style="margin:0in 0in .0001pt;"><font size="2" face="Arial" style="font-size:11.0pt;">July&nbsp;3, 2013</font></p>    </td>   </tr>  </table>
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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="3" face="Times New Roman" style="font-size:12.0pt;">2<a name="PB_2_050327_2897"></a></font></p>
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