According to a recent U.S. Department of Energy study, there is so much excess energy on the U.S. grid nightly that if every light-duty car and truck in America today used plug-in hybrid technology, 73 percent of them could be plugged in and “fueled” without constructing a single new power plant. So much for the myth that electric vehicles will cause more emissions.

The Portland Press has a great article on the potential benefits of harnessing this excess energy and making the switch to plug-in vehicles. Apparently, each night there is a large amount of renewable power generation capacity that sits idle. Tapping into this source by plugging in our vehicles at night would harness a vastly unused portion of the U.S. grid. From the article,

“Studies have shown that plug-in hybrids produce at least 67 percent fewer harmful emissions than a standard gasoline-powered car. Even when accounting for emissions from the production of electricity, national studies have shown greenhouse gas production would fall by almost 40 percent if plug-in hybrids became commonplace. Plug-in hybrids could easily be expected to get over 100 miles per gallon of gasoline, and owners would do most of their refueling at home where the equivalent cost of electricity is about $1 per gallon.”

The most interesting thing about this revelation is that the infrastructure is already there. We don’t have to worry about supporting plug-in vehicles with refueling stations or special sources of energy. Every home is a source of fuel. The grid is more than happy to accommodate the extra load. Seems like a pretty good way to reduce oil consumption, drop emissions, and save a buck.