Sunrgi is going to extremes to lower the cost of electricity from the sun.
The start-up on Tuesday came out of stealth and described its solar concentrator technology and business plans.
It has built a prototype device that magnifies light 1,600 times onto expensive germanium solar cells. The company intends to produce the devices in 12 to 15 months, and says they will capable of generating electricity at 5 cents a kilowatt hour--competitive with coal-fired power plants.
By focusing light onto high-end cells, the device can convert 37 percent of sunlight to electricity--substantially higher than the 15 to 20 … Read more