Hawaii’s HB 623 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 June 2015, Hawaii enacted HB 623, a law requiring all electric power to come from renewable sources by 2045, effectively phasing out fossil fuels from electricity production.