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Dan Haar: United Technologies Battery Could Upend The Power Business

Dan Haar: United Technologies Battery Could Upend The Power Business

A few years ago, when the parent company owned businesses that made fuel cells and jet-based power plants, scientists at the United Technologies Research Center in East Hartford worked on a rechargeable battery that could, in theory at least, store electricity not just for large applications, and not just for buildings and factories, but for the whole grid.

The idea was to make it not just work, but work in a unit that could be manufactured and sold at a price that made sense.

Now that theory is proving true with a battery that might change the game for solar and wind power, and for electric grids in developing nations. The technology, using a liquid solution of vanadium and...

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