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EXHIBIT 10.5

To:    Deutsche Bank AG, London Branch
Winchester House
1 Great Winchester Street
London EC2N 2DB
    
Re:    Calculation Agent Adjustment Notice

Date:    August 30, 2011
_____________________________________________________________________________________

Ladies and Gentlemen:

We are in receipt of the Calculation Agent Adjustment Notice (the “Notice”)
dated June 29, 2011 sent by the Calculation Agent to us. Capitalized terms not
otherwise defined in this letter will have their definitions set forth in the
Notice.
We agree that the table set forth in the Notice under “Tender Offer Adjustment”
is hereby superseded with the following revised Strike Price Adjustments (the
“Revised Strike Price Adjustments”):
 
Deutsche Reference Number
Old Strike Price
New Strike Price
2014 Warrants
328335
$38.50
$26.40
2015 Warrants (Base)
375283
$27.03
$24.00
2015 Warrants (Additional)
376539
$27.03
$24.00

We acknowledge and accept that neither this letter nor the Revised Strike
Adjustments limit or modify the other provisions of the Confirmations.

Very truly yours,

SUNPOWER CORPORATION

By: /s/ Dennis Arriola        
Name: Dennis Arriola
Title: EVP & Chief Financial Officer

77 Rio Robles
SUNPOWER
P: 1.408.240.5500
San Jose, CA 95134-1850 USA
www.sunpowercorp.com
F: 1.408.240.5400

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Agreed and accepted:

DEUTSCHE BANK AG, LONDON BRANCH,
as Calculation Agent

By: /s/ Lars Kestner        
Name: Lars Kestner
Title: Managing Director

By: /s/ Michael Sanderson    
Name: Michael Sanderson
Title: Managing Director

77 Rio Robles
SUNPOWER
P: 1.408.240.5500
San Jose, CA 95134-1850 USA
www.sunpowercorp.com
F: 1.408.240.5400