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How powerful is the world's biggest battery?

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As of 2020, the world’s biggest lithium-ion battery is hooked up to the Southern California power grid and can provide enough power for about 250,000 homes. But it's actually not the biggest battery in the world: a pair of lakes are. How can lakes be a battery? Explore how inventors are rethinking what a battery can be, and how these surprising solutions could help us achieve a sustainable future.

Why are batteries essential in helping us switch to renewable energy sources?

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About Plan for Zero

Climate change is one of the biggest challenges we face today, and the stakes could not be higher. To avoid the worst effects of a warming world - which will be catastrophic - humans need to stop adding greenhouse gases to the atmosphere. TED-Ed created a video series which provides a plan to meet those goals, based on an urgent, authoritative book by Bill Gates, How to Avoid a Climate Disaster. Avoiding a climate disaster won’t be easy, but it’s possible. Learn more »

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  • Video created by TED-Ed
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