In 2023, Public Act 235 (PA235) was enacted, which required utilities to update certain portions of their DG tariffs. These specific sections included increasing the size of eligible DG program projects up to 550kW, and increasing the eligible generation capacity each customer is eligible to build up to 110% of customer’s electricity consumption for the previous 12 months. A Distributed Generation and Interconnection workgroup was established to address these changes. Pursuant to the July 23, 2024 Order in U-21767, each utility filed an updated DG tariff to implement the requirements of PA235 in the following individual dockets, all of which were approved by the Commission on March 13, 2025:
Alpena Power Company – U-21794
Consumers Energy Company – U-21796
DTE Electric Company – U-21798
Indiana Michigan Power Company U-21795
Northern States Power Company – U-21793
Upper Michigan Energy Resources Corporation – U-21790
Upper Peninsula Power Company – U-21791
Prior to operating a distributed generation project, a customer must properly interconnect the project with the utility. The MPSC has established electric utility interconnection and net metering standards.
Typical customer electric generation technologies include solar photovoltaic systems, wind turbines, and on-farm anaerobic digestion systems. These systems are located on the customer's premises. See the Energy Information Administration website for more detailed information on these generation technologies.
If you are considering installing an electric generation project, check with your utility’s interconnection staff to learn about the process for interconnecting with the utility’s distribution system.
SEIA Residential Consumer Guide to Solar Power
DSIREUSA.org
DSIRE is a comprehensive source of information on state, local, utility, and federal incentives and policies that promote renewable energy and energy efficiency.
Energy Calculators
The US DOE provides calculators to evaluate the payback period of a renewable energy system.
MPSC Distributed Generation Program Blank Report
Distributed Generation and Legacy Net Metering Programs Report for Calendar Year 2021
