MIT Researchers Propose an Ancient Technology to Store Clean Energy

Anew proposal from MIT researchers looks at how firebricks, clay bricks used in ovens as far back as 3,000 years ago, could play a role in fueling a world that's independent of carbon energy.

What makes a firebrick — a brick made of refractory ceramic material — so ideal for this use is that they're able to retain heat for long periods of time if properly insulated.

The theoretical system these researchers created, called the Firebrick Resistance-heated Energy Storage (FIRES), would use the bricks as a repository for excess electric energy.

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