California’s last nuclear power plant will close by 2025 under an accord announced Tuesday, ending three decades of safety debates that helped fuel the national anti-nuclear power movement. The state’s largest utility, Pacific Gas & Electric Co., and environmental groups announced the agreement on the Diablo Canyon nuclear plant, which sits along a Pacific Ocean bluff on California’s central coast. Environmentalists had pressed the Nuclear Regulatory Commission for years to close Diablo, given its proximity to seismic faults in the earthquake-prone state. …