In November of 2023, the governor of Michigan signed a package of climate bills (Executive Office of the Governor 2023) that sets a 100 percent clean electricity target for 2040, one of the earliest in the United States (CESA n.d.). In 2020, the governor issued an executive order setting a goal for the state to reach net zero carbon emissions by 2050 (Executive Directive 2020-10 2019); in 2022, the MI Healthy Climate Plan was released, outlining actions the state could take by 2030 to work toward that goal (EGLE 2022). The state’s largest investor-owned utilities had previously set voluntary decarbonization targets: DTE for 2050 (DTE Energy 2019) and Consumers Energy for 2040 (Consumers Energy 2020). Fall 2023’s legislative package included six pieces of legislation: SB 271 on clean electricity, HB 5120 on renewables permitting, SB 277 on siting solar on farmland, SB 273 on efficient electrification, SB 519 on helping workers transition out of the fossil sector, and SB 502 on the utility integrated resource planning (IRP) process. This brief compares the provisions of the legislation with the state’s existing plan and utility plans to evaluate the progress the state has made toward institutionalizing electricity decarbonization. 2. Background