LOS ANGELES -- The California Public Utilities Commission will release Thursday a supplement to a September report that said generators withheld available power during blackouts, CPUC spokeswoman Terrie Prosper said Wednesday. ADVERTISEMENT The supplement, which will be released one hour before the commission's Thursday meeting, addresses generators' objections to the original report issued by Loretta Lynch, former president of the commission. Michael Peevey, who directed staff last October to investigate generator responses to the report, was promoted to president on New Year's Eve. "The supplemental report is a refinement of the analysis that was presented in the previous staff Wholesale...