The Federal Energy Regulatory Commission released data for January showing that all new energy created in the month was generated from renewable energy sources.
According to the report, 77.8 percent of new power generated in January was created by wind power, while 21.7 percent was solar power and 0.5 percent was biomass-fired power.
Those numbers are drastically different from January 2012, when more than 70 percent of new power generating capacity was provided by fossil fuels. In that month 47.7 percent of new capacity was created by coal-fired sources and 26.3 percent was provided by natural gas fired units.
Wind power was the largest source of new generation last month, adding 958 MW of power capacity. Solar power added 267 MW and biomass-fired sources added 6 MW.
Renewable sources still rank behind fossil fuels in total installed operating generating capacity, however. According to FERC, natural gas-fired sources provide 42.37 percent and coal provides 29.04 percent of total installed capacity. Wind power produces 5.17 percent of the total, while solar power provides .38 percent and biomass-fired sources produce 1.29 percent of total installed capacity.
