Chromasun, maker of multifunctional solar systems, has developed a prototype air conditioner that is powered by the sun. 

Chromasun’s device is 75 percent efficient. The device – at 10 foot by 4 foot sealed box – is essentially a utility scale solar thermal plant and a utility-scale concentrating solar PV plant in miniature. It contains mirrors, receivers and a concentrator for generating solar thermal energy as well as silicon solar cells.

The heat – roughly 65 percent of the power generated – gets exploited to run the air conditioners while the PV-generated electricity is used locally to offset grid power. Because there are spaces between the mirrors, sunlight can be used to light the interior below. Smaller devices will later come out for the residential market.

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