Michigan case is one of several legal disputes as Trump administration uses emergency powers to force a half-dozen coal-fired plants from closing

In a defeat for the Trump administration, a federal court on Friday ruled that the energy department exceeded its authority when it forced a Michigan coal-fired power plant to stay open past its scheduled retirement date last year.

The energy secretary, Chris Wright, had said the 64-year-old JH Campbell Generating plant was needed to ensure reliable electricity in the region, and he used emergency powers to keep it operating. Environmental groups and three states – Michigan, Illinois and Minnesota – went to court to try to overturn orders keeping the plant online.

Solar supplied 12.8% of US electricity in May even as Trump boosts coal over clean energy

Even as Donald Trump boosts coal over clean energy, solar power is hitting new milestones in the US and remains the leading source of new power.

Data released on Wednesday by the global energy thinktank Ember, along with a report by the Solar Energy Industries Association (Seia) and analytics firm Wood Mackenzie, show the continued growth of solar and decline of coal in the United States despite federal policy. In May, for the first time, solar supplied more of the nation’s electricity than coal, or 12.8%, Ember said. Coal supplied 12.2%, its fourth-lowest monthly share ever.