Bloomberg reports:

The chief executive of the world’s largest private coal company sat before a group of U.S. lawmakers who wanted to know whether the fuel had a future. He didn’t hesitate. “Coal,” he said, “is the future.”

It was 2010. Coal supplied nearly half of America’s power, the executive testified, and was growing more than 1.5 times faster than oil, natural gas, nuclear and renewables combined. Global demand was on pace to rise 53% within two decades. And renewable energy? Not an option. “Wind and solar comprise just 1% of today’s U.S. energy mix,” Gregory Boyce, then the chief executive of Peabody Energy Corp., told the members of Congress. “It is unrealistic to suggest that renewables could replace conventional baseload fuels.”

Not quite. This April, for the first time ever, renewable energy supplied more power to America’s grid than coal—the clearest sign yet that solar and wind can now go head-to-head with fossil fuels. In two-thirds of the world, they’ve become the cheapest forms of power.

Solar and wind will power half the globe by 2050, based on BloombergNEF forecasts. By that time, coal and nuclear will have all but disappeared in the U.S., forced out by cheaper renewables and natural gas.

The market triumph of renewable energy marks the biggest victory yet in the fight against global warming. Solar and wind are proliferating not because of moral do-gooders but because they’re now the most profitable part of the power business in most of the world. An industry that once relied on heavy subsidies and was propped up by government mandates is now increasingly standing on its own. [Continue reading…]