A new federal order is requiring two aging coal-fired power plants in Indiana to remain open beyond their planned retirement dates, a move aimed at preventing potential electricity shortages and maintaining grid reliability.

Federal officials say the plants are needed to provide consistent power during periods of high demand and extreme weather, but the decision is drawing criticism from utilities and environmental groups.

Opponents argue the order could drive up electricity costs for customers while prolonging pollution from outdated facilities.

The move highlights a growing national debate over how to balance reliable energy supply with the transition to cleaner, more affordable power sources.