PALM SPRINGS, CA – Giant wind turbines are powered by strong winds in front of solar panels on March 27, 2013 in Palm Springs, California. According to reports, California continues to lead the nation in green technology and has the lowest greenhouse gas emissions per capita, even with a growing economy and population. (
Credit: Kevork Djansezian/Getty

The rapidly dropping cost of renewable energy has upended energy economics in recent years, with new solar and wind plants now significantly cheaper than coal power.

But new research shows another major change is afoot: The cost of batteries has been declining so unexpectedly rapidly that renewables plus battery storage are now cheaper than even natural gas plants in many applications, according to a report released this week by Bloomberg New Energy Finance (BNEF).

BNEF analyzed pricing data from almost 7,000 power projects in 46 countries that span 20 energy technologies, including coal, gas, nuclear, battery storage, solar photovoltaics (PV), and wind.

They report that electricity prices “for onshore wind, solar PV and offshore wind have […]

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