Enlarge / If you're going to charge your car at home, why not also use it as a storage battery when it's just parked there? (credit: Monty Rakusen/Getty Images)
Disaster preparedness is becoming a bit more mainstream as the effects of climate change and the fallibility of human institutions become more clear. The auto industry has followed this trend, with more than one pointing to the fact that an electric vehicle is essentially a giant backup battery that could power your home for a few days in the event of an emergency.
Now, Pacific Gas and Electric (PG&E) will begin testing bidirectional charging in California with new pilot programs announced this week at General Motors and Ford.
Bidirectional charging got its first big boost after the 2011 Tōhoku-Oki earthquake, and in 2017, Nissan told Ars that several thousand EV-to-grid installations had already been completed in Japan. But at the time, the company had no immediate plans to enable the function here in the US. Since then, Nissan has conducted other vehicle-to-grid experiments, such as powering a convenience store.
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