Naturally Interesting

Sunrgi expects to be producing solar energy at $0.05 / kWh (equivalent to coal) within the next 12-15 months. How do they do it? By using glass to concentrate the solar power 1600 times and focus it on a tiny square of the most efficient photovoltaic material on the planet.

Photovoltaic material is expensive, but glass is cheap, so Sunrgi’s method effectively brings down the price of solar to be as cheap as coal. An added benefit is that there is no need for an expensive system to track the movement of the sun.