California’s SB 100 Pathway: Electricity Decarbonization → Phasing Out the Use of Fossil Fuels for the Generation of Electricity → State Fossil Phaseout Legislation GenerallyPathway: Electricity Decarbonization → Phasing Out the Use of Fossil Fuels for the Generation of Electricity → Restricting Fossil-Fuel Powered Electric PlantsJurisdiction: States and State Governments → State Legislatures In 2018, California passed Senate Bill 100, requiring 100 percent carbon-free electricity by 2045, effectively phasing out coal and natural gas.