Electricity generation increased 1.2 percent to 39,883,391 megawatthours in 2015 from 39,431,291 megawatthours in 2014. Most of Nebraska's electricity was generated by coal and nuclear power plants (60.6 percent and 25.9 percent, respectively). Plants using wind generated 7.97 percent, hydroelectric power generated 4.22 percent, natural gas generated 1.08 percent, other biomass generated 0.18 percent, and petroleum generated 0.02 percent.
In 2015, electricity generation by hydroelectric power increased 45.54 percent from 2014, generation by wind increased 16.21 percent, generation by other biomass increased 10.54 percent, generation by natural gas increased 6.17 percent, and generation by nuclear power increased 2.21 percent. Electricity generation by petroleum decreased 85.67 percent from 2014, and generation by coal decreased 5.91 percent.
Nuclear electric power generation decreased 37 percent from 2010 to 2011 and 16.32 percent from 2011 to 2012, which was due to the shutdown of the Fort Calhourn Nuclear Plant for the 2010 maintenance period and then from the 2011 flood.
There was an increase in electricity generation from other biomass from electric generators, electric utilities, between 1992–1998, because the Sheldon plant, operated by Nebraska Public Power District, was producing electricity from tire chips. There was no generation reported from this renewable energy source after 1998. The process was discontinued, because it was not considered cost–effective.
Also see the Generating Units report, the Units and Capacity by Energy Source report, and the Units and Capacity by Energy Source and Year of Initial Operation report for additional information.