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<SEC-DOCUMENT>0001104659-08-048792.txt : 20081024
<SEC-HEADER>0001104659-08-048792.hdr.sgml : 20081024
<ACCEPTANCE-DATETIME>20080731085816
<PRIVATE-TO-PUBLIC>
ACCESSION NUMBER:		0001104659-08-048792
CONFORMED SUBMISSION TYPE:	CORRESP
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20080731

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			SUNCOR ENERGY INC
		CENTRAL INDEX KEY:			0000311337
		STANDARD INDUSTRIAL CLASSIFICATION:	PETROLEUM REFINING [2911]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			A0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		CORRESP

	BUSINESS ADDRESS:	
		STREET 1:		112 4TH AVENUE SW PO BOX 38
		STREET 2:		CALGARY
		CITY:			ALBERTA CANADA
		STATE:			A0
		ZIP:			T2P 2V5
		BUSINESS PHONE:		4032698100

	MAIL ADDRESS:	
		STREET 1:		112 FOURTH AVE SW BOX 38
		STREET 2:		CALGARY
		CITY:			ALBERTA CANADA
		ZIP:			T2P 2V5

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	SUNCOR INC
		DATE OF NAME CHANGE:	19970430

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	GREAT CANADIAN OIL SANDS & SUN OIL CO LTD
		DATE OF NAME CHANGE:	19791129
</SEC-HEADER>
<DOCUMENT>
<TYPE>CORRESP
<SEQUENCE>1
<FILENAME>filename1.htm
<TEXT>

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<head>





</head>

<body lang="EN-US">

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

<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;">July&nbsp;31,
2008</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;">Donald
F. Delaney</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">United
States 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., U.S.A.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">20549-7010</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;">Dear
Mr.&nbsp;Delaney:</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="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.28%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Re:</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="93%" valign="top" style="padding:0in .7pt 0in .7pt;width:93.22%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Suncor
  Energy Inc.</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.28%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="93%" valign="top" style="padding:0in .7pt 0in .7pt;width:93.22%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Form&nbsp;40-F
  for Fiscal Year Ended December&nbsp;31, 2007 (&#147;Form&nbsp;40-F&#148;)</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.28%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="93%" valign="top" style="padding:0in .7pt 0in .7pt;width:93.22%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Filed
  March&nbsp;4, 2008</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in .7pt 0in .7pt;width:4.28%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in .7pt 0in .7pt;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="93%" valign="top" style="padding:0in .7pt 0in .7pt;width:93.22%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">File
  No.&nbsp;001-12384</font></b></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;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">We
have received your letter of June&nbsp;30, 2008 with respect to our Form&nbsp;40-F
for our fiscal year ended December&nbsp;31, 2007.&#160; Please find below, for your consideration,
each of your comments, followed by our response.</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;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Form&nbsp;40-F</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;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Financial
Statements</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;"><b><u><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Statements
of Earnings and Comprehensive Income, page&nbsp;58</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 .5in;text-indent:-.5in;"><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;&#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><font size="2" style="font-size:10.0pt;">We note the
increasing volume of your energy marketing and trading activities which
approximated C$2.9 billion in 2007.&#160;
Considering the magnitude of this activity and its increasing importance
to your operations, it appears that the associated disclosures should be
expanded to more adequately and sufficiently address the salient aspects of
these activities to include information such as the types of contracts, fair
values aggregated by source, methods and significant assumptions used to
estimate fair values, reconciliation of beginning and ending carrying values
and sensitivities to estimates utilized.</font></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">While our energy marketing and trading activities have increased in
volume, including both physical and financial trading, the relative importance
to our operations is not considered significant. We disclosed the types of
contracts we entered into at December&nbsp;31, 2007 on page&nbsp;72 of our Form&nbsp;40-F
Financial Statements (swaps, forwards and options) and we have indicated that
these are </font></i></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>

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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 style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">energy contracts.&#160; These energy
contracts are comprised of crude oil, natural gas and heating oil contract,
with crude oil representing the majority of the contracts at December&nbsp;31,
2007. We will modify the wording in our next quarterly filing to describe what
is included in energy contracts.</font></i></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">We have disclosed fair values at December&nbsp;31, 2007 by energy
assets and liabilities on page&nbsp;72 of our Form&nbsp;40-F Financial
Statements.</font></i></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Starting January&nbsp;1, 2008, Canadian GAAP required companies to
disclose methods and significant assumptions used to estimate fair values.&#160; We have disclosed the following on page&nbsp;28
of our unaudited financial statements in our Q2 2008 Form&nbsp;6-K regarding
disclosure on methods and assumptions used to determine fair values:</font></i></p>

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

<p style="margin:0in 37.0pt .0001pt 75.0pt;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">&#147;The estimated fair values of recognized financial instruments have
been determined based on the company&#146;s assessment of available market
information and appropriate valuation methodologies based on industry accepted
third-party models; however, these estimates may not necessarily be indicative
of the amounts that could be realized or settled in a current market
transaction.&#148;</font></i></p>

<p style="margin:0in 37.0pt .0001pt 75.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">We have included sensitivities on page&nbsp;32 of our unaudited
financial statements in our Q2 2008 Form&nbsp;6-K regarding the impact of a
change in crude oil and natural gas on our financial instruments. This
information will be included in our 2008 Form&nbsp;40-F Financial Statements.</font></i></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">We have disclosed the beginning and ending carrying values/fair values
as well as activity in the year of our net energy trading assets (liabilities)
on page&nbsp;73 of our December&nbsp;31, 2007 Form&nbsp;40-F Financial
Statements.</font></i></p>

<p style="margin:0in 0in .0001pt .5in;"><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;">Note 7 &#151;
Financial Instruments, page&nbsp;69</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 .5in;text-indent:-.5in;"><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;&#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><font size="2" style="font-size:10.0pt;">In subsection (c)&nbsp;of
this note, you describe your activities associated with certain energy
marketing and trading activities, in which you use physical and financial
derivative instruments, including swaps, forwards and options.&#160; Please tell us how you determined that these instruments
qualify for derivative accounting under U.S. GAAP, particularity giving
consideration to the guidance contained in EITF 01-8.</font></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">The Energy Marketing and Trading activities described in Note 7(c)&nbsp;qualify
for derivative accounting as the nature of the instruments used in both the
physical and financial trading activities meet the definition of a derivative
as outlined in FAS 133 paragraph 6.&#160; In
addition, the physical and financial trading activities described in this
section are all commodities based (i.e. crude oil and natural </font></i></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>

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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 style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">gas) that have been considered in relation to the guidance outlined in
EITF &#151; 01-8, and were determined to be outside its scope.&#160; EITF &#151; 01-8 deals with determining whether an
arrangement is a lease.&#160; Since a lease
conveys the right to use property, plant or equipment, our commodity purchase
and sale transactions do not meet this definition.&#160; We will continue to evaluate future
activities in respect to this guidance.</font></i></p>

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

<p style="margin:0in 0in .0001pt .5in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3.</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;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Please expand
your disclosure, with respect to your energy marketing and trading activities,
to address the nature and extent of the market risk that is associates with
these transactions. Additionally, please tell us whether there are any purchase
commitments related to these contracts as of December&nbsp;31, 2007 and, if so,
the nature, term and amounts corresponding to such commitments.</font></p>

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

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">Starting January&nbsp;1,
2008, Canadian GAAP required companies to disclose additional information on
financial instruments such as market risk.&#160;
Please see page&nbsp;31 of our unaudited financial statements in our Q2
2008 Form&nbsp;6-K filing for information on market risk affecting these
contracts. This information will be included in our 2008 Form&nbsp;40-F.</font></i></p>

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

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">At December&nbsp;31,
2007, Suncor had purchase commitments relating to crude oil predominately for
refinery supply and natural gas for physical trading.&#160; Crude oil commitments consisted of market
price evergreen contracts for a total volume of 148 thousand barrels per day of
crude oil, of which most have industry standard 30-day cancellation clauses.&#160; Natural gas commitments consist of fixed
price contracts with a total volume of 14 million GJ within a price range of
Cdn$6.00-$7.67 per GJ and having terms extending to December&nbsp;2008, as well
as market price contracts for a total volume of 40 million GJ with terms
extending to April&nbsp;2009. Disclosure of these purchase commitments will be
included in our 2008 Form&nbsp;40-F.</font></i></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><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;">Note 20
&#151; Differences between Canadian and U.S. Generally Accepted Accounting
Principles, page&nbsp;86</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 .5in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.</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;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">We read your
disclosure which explains and reconciles the differences that exist between
your primary Canadian GAAP balance sheets and statements of earnings and
comprehensive income, and the corresponding U.S. GAAP financial statements.
Please tell us why your disclosure does not also include a similar explanation
and reconciliation for your statements of cash flows, as required by Item
17(c)(2)(iii)&nbsp;of Form&nbsp;20-F. Such reconciliation is required pursuant
to General Instruction C(2)&nbsp;of Form&nbsp;40-F.</font></p>

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

<p style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">We have reviewed our December&nbsp;31, 2007 Form&nbsp;40-F disclosure
as it relates to Item 17(c)(2)(iii)&nbsp;of Form&nbsp;20-F.&#160; While there are no material differences in
cash flows reported in our Canadian GAAP financial statements from those that
would be presented under US GAAP, we recognize that this is not specifically
stated in </font></i></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>

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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 style="margin:0in 0in .0001pt .5in;"><i><font size="2" face="Times New Roman" style="font-size:10.0pt;font-style:italic;">our disclosure.&#160; We will continue
to evaluate the nature of any future cash flow differences under US GAAP, and
ensure specific disclosure is made in our future filings, even where
differences are not material, in accordance with Form&nbsp;40-F requirements.</font></i></p>

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

<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, we acknowledge that:</font></p>

<p style="margin:0in 0in .0001pt .25in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</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; </font><font size="2" style="font-size:10.0pt;">Suncor Energy Inc. is responsible for the
adequacy and accuracy of the disclosure in the filing;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</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; </font><font size="2" style="font-size:10.0pt;">Staff comments or changes to disclosure in
response to staff comments do not foreclose the Commission from taking any
action with respect to the filing; and</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.25in;"><font size="2" face="Symbol" style="font-size:10.0pt;">&#183;</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; </font><font size="2" style="font-size:10.0pt;">Suncor Energy Inc. may not assert staff
comments 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 .75in;text-indent:-.25in;"><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;">We
trust this information assists you with your review.</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;">Sincerely,</font></p>

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

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/
  J. Kenneth Alley</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">J.
  Kenneth Alley</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Senior
  Vice President and Chief Financial Officer</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<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>

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

</div>
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