Doubtless old hat for most of you boffins, but saw a Book Channel piece with Sherry Boschert, who discussed at some length a scheme new to me, using the battery capacity of plug-in hybrids as a peak-power reserve for the grid, and how it might be effected, as well as the more obvious advantages of plug-in hybrids. http://www.sherryboschert.com/ n.b. It's a book plug. No relation to me, commercial or otherwise. Jack -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist