Peer-to-peer energy storage

One problem with electricity is that it’s difficult to store. A power plant has to be capable of generating sufficient power for peak demand on a few summer afternoons, even though most of the year the plant will be underutilized. One wild idea is to store energy in electric car batteries at night, then consume it during the day to offset these peak demand days. This was described by Ed Legge of the Edison Electric Institute:

Legge: Plug-in hybrids actually are one way that could give us a giant virtual battery.

Legge says some utilities eventually hope to borrow electricity from electric car batteries during peak energy hours. The cars would recharge at night, when demand is at its lowest.

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