Which upgrades should you perform? Check out FSEC's site which has results of real world testing they've done on energy efficient upgrades...and of course, lots of info on Solar Power.
Go Florida Solar Energy Center and UCF!
Plugin...Recharge covers the electrifying subject of the Charging Infrastructure for EVs/PHEVs.
EVSE = Electric Vehicle Supply Equipment = EV Chargers
There is no better way for each of us to reduce GHG emissions and reduce our dependence on foreign oil than switching to an EV (short of not owning a car).