Critics argue there is little value in protecting a “dying” part of the power portfolio. They are misguided. Put aside the financial difficulties facing FirstEnergy. Keeping Davis-Besse in operation makes sense here just as it does in New York. Nuclear power is a proven source of clean energy. If anything, its presence should be expanded, improved versions of the technology in the works. Deny financial help as climate change deepens its grip? That is a strange argument for environmentalists to make.