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Home Battery Storage Permit Requirements in Michigan (2025)

Last updated: June 2025

Michigan Bottom Line: A permit is required in all Michigan jurisdictions. Michigan uses the Michigan Building Code. Typical fees: $175–$375. Detroit metro cities, Grand Rapids, and Lansing all have online permit portals. DTE Energy and Consumers Energy handle interconnection (3–5 weeks). Most cities review permits in 7–14 days.

How Michigan Battery Permits Work

Michigan has the Michigan Building Code (MBC) enforced by local building departments. Michigan adopted the 2015 NEC (with updates in some jurisdictions to 2020 NEC). All residential battery storage installations require a permit. The Michigan Department of Licensing and Regulatory Affairs (LARA) licenses electrical contractors.

The Permit Process

Most Michigan cities process residential electrical permits in 7–14 days. Detroit, Grand Rapids, Lansing, Ann Arbor, and Flint all have online permit portals. DTE Energy serves SE Michigan; Consumers Energy serves much of the rest of the state. Both have residential interconnection application processes for grid-tied battery storage.

Documents Required

Required: permit application, single-line diagram, UL 9540 spec sheets, Michigan LARA-licensed electrical contractor info, site plan. Michigan requires an EC2 electrical contractor license for residential work.

  1. Permit application — from your local building department
  2. Single-line electrical diagram
  3. Equipment spec sheets with UL 9540 listing
  4. Licensed contractor license number
  5. Site plan

FAQ — Michigan

In virtually all incorporated areas of Michigan, yes. Always verify with your specific local building department before proceeding without a permit.
Typical review times range from 5 to 21 business days depending on your city. Your installer can give a current estimate for your specific jurisdiction.
Most reputable installers handle permit filing as part of the installation package. Confirm this is included before signing and ask for the permit number once issued.
Informational only — not legal or electrical advice. Verify with your local building department.
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