A battery system that stores excess energy when it’s plentiful will power an apartment building in Buffalo, New York, when the grid is strained and electricity is costly.

President Donald Trump is on Washington’s National Mall on Wednesday for a campaign-style rally that he hopes gets Americans excited about his presidency and the nation's 250th anniversary celebrations.

California intends to sue the Trump administration over its deal to end an offshore wind project proposed off the state’s central coast.

California is investigating one of the Trump administration’s deals to end an offshore wind project.