Storing Power with Molten Salt – MIT Technology Review

See on Scoop.itMicro generation – Energy & Power systems

A small startup based in Emeryville, California, will build a pilot-scale energy storage system that could provide a cheaper, more practical way of storing large amounts of electricity and help enable the power grid accommodate large amounts of renewable energy.

Halotechnics has announced a deal with a partner to construct a one-megawatt plant that will store energy in molten salts—a technique previously used to store energy at some large solar thermal plants. The company says it will cost half as much as battery storage, and could compete with the cheapest way of storing large amounts of electricity—pumping water up a hill and using it to drive a turbine as gravity brings it back down.

Halotechnics is developing a new kind of system that uses a new molten salt chemistry to store energy from any source of electricity. It uses electricity to drive a heat pump, which can take low temperature heat. Halotechnics’s innovation is developing molten salts with the properties that allow them to store heat from off-the-shelf heat pumps. Developing the salts involved the use of a robotic system that combines many different types of salts and tests the properties of the resulting mixture, allowing it to quickly develop mixtures that have different properties.

 

See on www.technologyreview.com

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