Solar Panel Installation in California
A contractor installs hardware for a Tesla Powerwall battery unit at a home in San Jose, California. | Photo by David Paul Morris/Bloomberg via Getty Images

Tesla and California utility PG&E launched a new program that will pay eligible Powerwall owners to send extra electricity to the grid when it’s vulnerable to blackouts. Working together, the Powerwalls create a “virtual power plant” that can help keep the lights on during emergencies or energy shortages.

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