Solar companies and setters calling homeowners in Maryland work under the federal telemarketing rules plus Maryland'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 Maryland telemarketer registration requirement in the statutes it reviewed. No registration found in Maryland telemarketing statutes reviewed. Confirm before dialing.
Md. Code, Com. Law 14-2201 to 14-2205, 14-3201, 14-4501 to 14-4503Maryland sets its own window: 8 a.m. to 8 p.m. It covers telephone solicitations, including automated dialing and recorded message calls. Set the dialer to the narrower of the state and federal windows.
Md. Code, Com. Law 14-4502(c)(1)Maryland relies on the National Do Not Call Registry. State law makes federal do not call violations state violations.
Md. Code, Com. Law 14-3201Maryland has its own law on automated or recorded sales calls. Prior express written consent for automated or recorded solicitations. It can be stricter than the federal rules.
Md. Code, Com. Law 14-4502(a)(3)Maryland requires the consent of all parties to record a call. A party may record when all parties give prior consent. Tell the homeowner the call is recorded before recording.
Md. Code, Cts. & Jud. Proc. 10-402(c)(3)Maryland requires prior express written consent for solicitations using an automated selection or dialing system or a recorded message, bars solicitations from 8 p.m. to 8 a.m., limits same subject calls to three per 24 hours, and requires all party consent to record.
The research found no Maryland statute written specifically for residential solar sales. General consumer and contract law still applies.
Maryland gives buyers 3 business days to cancel covered home solicitation sales (sales of $25 or more). For home improvement contracts, buyers get until the fifth business day, or the seventh if they are 65 or older (Com. Law 14-302.1). Whether a solar installation is a home improvement contract depends on the facts. Md. Code, Com. Law 14-302
Checked October 14, 2026. General information, not legal advice.
Federal rules and Maryland's own rules both apply: the National Do Not Call Registry, the calling window, consent rules for automated calls and texts, and any Maryland registration requirement. The Maryland rules page lists each one with its source. General information, not legal advice.
Maryland: 8 a.m. to 8 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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