I Was Wrong About the Limits of Solar; PV Is Becoming Dirt Cheap.

The price of solar power is falling faster than many thought was possible. Harvard’s David Keith comes honest with us about solar power: “Facts have changed. I was wrong.” The unsubsidized electricity cost from industrial-scale solar PV in the most favorable locations is now well below $40 per megawatt-hour and could very easily be below $20 per megawatt-hour by 2020. Compared to other new sources of supply, this would be the cheapest electricity on the planet.

http://electrek.co