‘Sun in a box’ would store renewable energy for the grid

Tallbloke's Talkshop


This may or may not have its uses, but any idea that the whole world could get electricity mainly from the sun and the wind is not credible, with today’s technology at least.

MIT engineers have come up with a conceptual design for a system to store renewable energy, such as solar and wind power, and deliver that energy back into an electric grid on demand, says TechExplore.

The system may be designed to power a small city not just when the sun is up or the wind is high, but around the clock.

The new design stores heat generated by excess electricity from solar or wind power in large tanks of white-hot molten silicon, and then converts the light from the glowing metal back into electricity when it’s needed.

The researchers estimate that such a system would be vastly more affordable than lithium-ion batteries, which have been proposed…

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