As the number of electric vehicles, or plug-in hybrids increases, there is a good chance that they may put greater strain on the grid with a lot of vehicles going for a recharge simultaneously. Google is currently working on a solution to this problem, by integrating vehicles with the electric grid so as to minimize strain and help utilities charge better.
Google is currently working on creating a software that would help meet this end. The idea obviously is to avoid a large number of vehicles getting plugged in at the same time. The software would monitor usage, and find the perfect time to recharge the vehicle, thus avoiding charging during times of peak and high demand, and putting less strain on the grid.
Customers who choose such options may be allowed for credit from the utilities in return. A couple of years back, Google also explored the possibilities of having the plug-in hybrids feed their stored energy back to the grid, and create a potential back-up power source.