A California start-up has saved thousands of used electric vehicle battery packs from landfills by diverting them into an energy storage facility.

BWU Storage Solutions made a million bucks last year selling stored renewable energy to the CA power grid, thanks to 1,300 used battery packs from Toyota and Honda EVs.

Worn out over long years of powering cars, the batteries nevertheless have continued use as a way to store excess solar and wind energy for times when the sun isn't shining and the wind isn't blowing.

Over the next decade, millions of battery packs will need to be dismantled and recycled or will need a second use at a facility like B2U to prevent them from being sent to landfills.

Grid storage in large-demand states like California is a useful destination for these battery packs, and could potentially lower storage costs by 40% estimates the San Diego Times.

B2U's Sierra facility has 25 megawatts of storage capacity capable of fitting any EV into their system. They are seeking to use Japanese investment capital to expand their operations to Texas and California.

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