Highview Power
Stores energy by super-cooling air and storing it in liquid form in large tanks. The energy is recovered by converting the liquid air back into a gas and using it to run a turbine. Website
Private/Startup
Arkenlight
Radiovoltaic technology that recycles nuclear waste to create long-life batteries. Micropower only. Website
Form Energy
Iron-air batteries are big and heavy, but relatively cheap per kilowatt-hour. Good for grid storage.Can discharge over a much longer timeframe than lithium-ion. A one megawatt system capable of 100-hour discharge time requires about one acre of land. They also offer a “grid modeling toolkit” which is software to model power grids. Website
CarbonCapture
Capturing carbon from the atmosphere and selling carbon credits. Website
Jetson
The long-awaited promise of flying cars. Website
NDB
Self-charging batteries using nuclear waste. Website
SkyCool
Radiative cooling which actually radiates energy to space. Website
Cambridge Photon Technology
Increased efficiency solar panels. Website
Sunew
Organic photovoltaics. Website
Heliatek
Organic photovoltaics. Website