LOS ANGELES (AP) — More than a year after California endorsed a proposal to extend the lifespan of its last nuclear power plant, disputes continue to swirl about the safety of its decades-old reactors, whether more than $1 billion in public financing for the extension could be in jeopardy and even if the electricity is needed in the dawning age of renewables. Late last month, a state judge tentatively approved the blueprint to keep the Diablo Canyon Nuclear Power Plant operating for an additional five years, until 2030. The proposal, which could get finalized later this month, imposed several conditions, including that federal nuclear safety regulators greenlight the longer run and that a state loan supporting the extension is not canceled.