Here are some fun facts on the wind and solar revolution.

Rooftop solar is growing worldwide by 50% per year. In 1985 solar cost $12 per watt, but today’s prices are closer to 36 cents per watt. Every five hours the world adds 23 MW of solar—which was the global installed capacity in 1985.

In January of 2014 Denmark got 62% of its electricity from wind. In 2013 Ireland got 17% of its electricity from wind, and Spain and Portugal both exceeded 20% from wind. Today China gets more electricity from wind (91,000 MW) than it does from nuclear reactors. The United States is second in the world in installed wind turbines, with South Dakota and Iowa obtaining over 26% of their electricity from wind…

The renewable energy revolution will enable civilization to stop the growth of highly polluting fossil fuels. It will enable society to leave the majority of the remaining reserves of fossil fuels alone and unburned. Acceleration of this revolution helps in solving many problems and is a key to restoring and maintaining the life support systems of the earth.