Pennsylvania could become the latest state to bail out struggling nuclear reactors under a bill introduced March 11 by a state lawmaker.

The measure from State Rep. Tom Mehaffie (R) could aid plants owned by Exelon Corp., FirstEnergy Solutions Corp., and Talen Energy.

It comes after similar measures have passed in New York, New Jersey, Connecticut, and Illinois.

Lawmakers are pushing to protect reactors to save jobs and meet clean energy goals as cheap gas has eroded the economics of nuclear power.

The debate in Pennsylvania will play out in a state that has benefited from gas production in the...