The clean-energy boom is about to be transformed. In a surprise move, U.S. lawmakers agreed to extend tax credits for solar and wind for another five years. This will give an unprecedented boost to the industry and change the course of deployment in the U.S.
The extension will add an extra 20 gigawatts of solar power, more than every panel ever installed in the U.S. prior to 2015, according to Bloomberg New Energy Finance (BNEF). The U.S. was already one of the world’s biggest clean-energy investors. This deal is like adding another America of solar power into the mix.
The wind credit will contribute another 19 gigawatts over five years. Combined, the extensions will spur more than $73 billion of investment and supply enough electricity to power 8 million U.S. homes, according to BNEF.
"This is massive," said Ethan Zindler, head of U.S. policy analysis at BNEF. In the short term, the deal will speed up the shift from fossil fuels more than the global climate deal struck this month in Paris and more than Barack Obama’s Clean Power Plan that regulates coal plants, Zindler said.
This is exactly the sort of bridge the industry needed. The costs of installing wind and solar power have dropped precipitously, by more than 90 percent since the original tax credits took effect, but in most places coal and natural gas are still cheaper than unsubsidized renewables. By the time the new tax credit expires, solar and wind will be the cheapest forms of new electricity in many states across the U.S.
The tax credits, valued at about $25 billion over five years, will drive $38 billion of investment in solar and $35 billion in wind through 2021, according to BNEF. The scale of the new projects will help push costs down further and will stimulate new investment that lasts beyond the extension of the credits.
Few people in the industry expected a five-year extension. Stocks soared. SolarCity, the biggest rooftop installer, surged 34 percent yesterday. SunEdison, the largest renewable-energy developer, climbed 25 percent, and panelmaker SunPower increased 14 percent.