Hybrids Followup

I was following a link from Gristmill, the enviro blog, so it didn't occur to me to have my astroturf detectors on, but as several people have pointed out the Electrical Power Research Institute study I mentioned this morning is coming from an industry funded shop and could just be entirely made up. Maybe I was right in the first place, and hybrids really won't help much unless we change our electricity habits. I'm hoping the Gristmill people will revisit this and explain why I should find the utilities trustworthy on this point.