California's last nuclear facility is approaching its scheduled retirement date in 2025. But a new report Tuesday from Stanford University researchers, backed by President Barack Obama’s first energy secretary, is raising questions about whether the retirement plan should be revised. POLITICO’s Colby Bermel explains.   Annie Snider covers water issues for POLITICO Pro and is the host of POLITICO Energy.  Colby Bermel is the energy reporter for POLITICO California. Nirmal Mulaikal is a POLITICO audio host-producer.  Raghu Manavalan is the host-producer of the Playbook Daily Briefing and a senior editor for POLITICO audio. Irene Noguchi is the executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices