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A 19th-century idea might lead to cleaner cars, larger-scale renewable energy.
The government’s energy research agency is spending $30 million to demonstrate cheap solar power that’s available day and night.
Sun Catalytix is making a new type of flow battery that could store hours’ worth of energy on the grid.
The government funds a factory to make battery materials, but it’s not even clear they’ll be needed.
Eos Energy Storage says its zinc-air battery can store energy to meet peak power needs for less.
A Pittsburgh company says its battery has the long life and cheap cost needed to be practical for energy storage.
Utilities are installing devices that make ice at night to replace air-conditioning during times of peak power demand.
New ultracapacitor material could be fabricated directly on chips and solar cells.
Nanopore arrays combine high power and storage capacity.
A government-funded start-up claims it can make ionic liquid energy storage feasible.