Nearly half a million dollars had already been spent when the study was halted, the Interior Department's inspector general found.
Coal burning, and carbon emissions, are on the rise again.
New research finds that coal is not at all out of the picture.
By 2019, a federal energy report forecasts, natural gas will provide 34 percent of U.S. electricity and coal 28 percent — making gas the top fuel for electricity generation, a role held by coal as recently as 2015.
The Trump administration's proposal to kill the Obama-era climate regulation draws praise in West Virginia.
Andrew Wheeler changed his tune once Trump articulated an energy and environmental platform — and once it became increasingly clear Trump would win the GOP nomination.
The 43-page proposal, expected to be made public in the coming days, argues that President Barack Obama's administration overstepped its legal authority in implementing the Clean Power Plan.
The Trump administration is working to promote development by weakening environmental laws and public access to government information, according to reports from an invitation-only meeting.
Commerce Secretary Wilbur Ross, Labor Secretary Alexander Acosta and Energy Secretary Rick Perry attended the National Mining Association's fall board of directors meeting at the hotel owned by the president.
The Energy Department announced new loan guarantees for a struggling nuclear plant — and a controversial new policy that could pay coal and nuclear plants for keeping the grid stable.