Energy and CO2 implications of decarbonization strategies for China beyond efficiency: Modeling 2050 maximum renewable resources and accelerated electrification impacts

•China LEAP model used to assess multi-sector decarbonization strategies to 2050.•Energy, CO2 impacts of accelerated electrification and renewables are assessed.•2025 CO2 peak feasible under 4 strategies, peak levels vary from 10.2 to 10.7 GtCO2.•Faster electrification’s CO2 impact depend on pace of power sector decarbonization.•Demand-side renewable has similar CO2 reduction impact as power decarbonization.