Old EV Batteries Could Power Two-Thirds of China's Grid
Retired electric vehicle batteries might solve China's biggest renewable energy challenge. Instead of ending up in landfills, these used batteries could store clean power for millions of homes.
China's growing pile of old electric vehicle batteries just became a massive solution to one of renewable energy's toughest problems.
Researchers discovered that used EV batteries could meet two-thirds of China's energy storage needs. These retired batteries would charge up when solar panels and wind turbines produce extra power, then release that electricity during peak demand times like mornings, evenings, and cold winter months.
Right now, gas and coal plants fill those gaps when the sun doesn't shine and wind doesn't blow. But China is building huge amounts of grid storage to save renewable energy for later use, and old EV batteries offer a ready-made solution that's already manufactured and paid for.
The timing couldn't be better. China leads the world in electric vehicle adoption, which means millions of car batteries will reach the end of their automotive life in coming years. While these batteries lose enough capacity to make driving range impractical, they still have plenty of life left for stationary storage.
Instead of mining new materials and building batteries from scratch, power companies could give these batteries a second career. Vehicle batteries typically retire when they drop to 70-80% of original capacity, but that's more than enough to store grid power where batteries don't need to be lightweight or compact.
The Ripple Effect
This approach solves multiple challenges at once. It reduces mining for new battery materials, keeps toxic components out of landfills, and makes renewable energy more reliable and affordable. Countries like the United States, United Kingdom, and Australia are watching closely as they face similar storage needs.
The model also makes electric vehicles more economically attractive. If manufacturers can sell retired batteries for grid storage, they can reduce the upfront cost of new EVs. That helps more families afford clean transportation while building the infrastructure for clean energy.
China's renewable energy revolution just found its missing piece, and it was hiding in plain sight all along.
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Based on reporting by New Scientist
This story was written by BrightWire based on verified news reports.
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