U.S. coal producers don't want a trade war. But they might get one if President Trump pushes forward with tariffs on foreign steel and aluminum.

America's solar industry has ridden a roller coaster over the first half of 2018.

The Massachusetts Senate unanimously passed a carbon pricing bill yesterday evening, handing climate hawks a major victory after a series of national setbacks.

Corporate America has emerged as a leading buyer of renewable energy in recent years. Now, U.S. cities are getting in on the act.

Koch Industries Inc. acquired 20,052 shares in FirstEnergy Corp. during the first three months of 2018, filings with the Securities and Exchange Commission show.