Notice Re: Revision to Q3/08 Report

October 31, 2008

NOTICE TO MARKET PARTICIPANTS

Re: Revision to Q3/08 Report

The MSA published its Q3/08 Report on October 27, 2008. A participant has pointed out an error that affects Table II in Section 4 of the report on Page 14. The table compares revenues from sales of DDS with those from providing spinning reserves.  The values for on- and off-peak spin were median values rather than the intended average values indicated in the table headings. The values in Table II have been corrected as well as the necessary changes to the preceding text. The revised version of the 2008 Quarterly Report is now posted to our web site.

We apologize for the error and any inconvenience that it may have caused.

Regards,

“Original Signed”

Mike Nozdryn-Plotnicki

Manager, Market Monitoring

Created: 10/31/2008