Coal-fired electricity generation was down more than 25% and hit a first-quarter low in the U.S.

Analysts say the U.S. coal industry hasn’t been able to fully capitalize on the surge in demand

Coal ash contains a slew of toxic elements. The Tennessee Supreme Court is weighing the latest effort to block the workers’ cases.

Traditionally, when coal prices spike, many plants switch to natural gas. But with natural gas prices at record highs too, some power providers are at a loss.