Solar companies and setters calling homeowners in Michigan work under the federal telemarketing rules plus Michigan's own. Here is what each one means for a solar appointment floor, with the official source for every rule.
From official sources, checked September 26, 2026. General information, not legal advice.
The research found no Michigan telemarketer registration requirement in the statutes it reviewed. No telemarketer registration found in Home Solicitation Sales Act. Confirm before dialing.
MCL 445.111 to 445.117 reviewedMichigan sets its own window: 9 a.m. to 9 p.m. It covers unsolicited commercial calls; Penal Code offense framed around harassing intent. Set the dialer to the narrower of the state and federal windows.
MCL 750.540e(1)(f)Michigan relies on the National Do Not Call Registry. Federal list designated as the Michigan do not call list.
MCL 445.111a(5)Michigan has its own law on automated or recorded sales calls. No telephone solicitation using a recorded message, in whole or part. It can be stricter than the federal rules.
MCL 445.111a(1)Michigan requires the consent of all parties to record a call. Statute bars eavesdropping on private conversations without all parties' consent. Tell the homeowner the call is recorded before recording.
MCL 750.539a(2); MCL 750.539cMichigan uses the National Do Not Call Registry as its state list, bars recorded message sales calls, requires callers to identify the business, and treats unsolicited commercial calls received between 9 p.m. and 9 a.m. as a Penal Code matter.
The research found no Michigan statute written specifically for residential solar sales. General consumer and contract law still applies.
Michigan gives buyers 3 business days to cancel covered home solicitation sales (sales over $25). MCL 445.112 (Home Solicitation Sales Act)
Checked October 14, 2026. General information, not legal advice.
Federal rules and Michigan's own rules both apply: the National Do Not Call Registry, the calling window, consent rules for automated calls and texts, and any Michigan registration requirement. The Michigan rules page lists each one with its source. General information, not legal advice.
Michigan: 9 a.m. to 9 p.m. The federal window is 8 a.m. to 9 p.m. at the homeowner's location; use the narrower one.
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