SMUD manages to be vastly cheaper even after dealing with the colossal failure of Racho Seco. They built a poor performing nuclear power plant, decommissioned it early, and are still paying to store the waste decades later because the federal government never met their commitment to provide long-term waste storage.

https://www.nukefree.org/news/20yearsaftersacramentovotedtoshutranchoseco,smudhasdiversifiedenergysources