Steve Greenberg, who runs a "solar power plant" in Berkeley
Michael Bluejay runs an analytical Saving Electricity page full of interesting info
Jessi
Stuart
Don B
Simon C
Harold
David B
Ed, an actor with a show on HGTV called Living with Ed, about economical green living. He has a positive http://fixingtheplanet.com and promotes the intriguing http://greenswitch.tv (an RF-base whole house switch that includes your thermostat, etc).