I saw the production Chevrolet Volt yesterday, just one of many plug-in electric or hybrid-electric vehicles that are being planned, from automakers including Nissan and Toyota.
The idea, the companies tell us, is that we'll be able to charge these electric vehicles during "off-peak" hours -- presumably in the evening -- when power requirements are low and prices go down.
But if we're all using air conditioning and lights and water heaters and electrical appliances during the day, and we've got several million electric vehicles all plugged in and charging once we go to bed at night ... then exactly when will "off-peak" be?
