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Industry Guide Solar · COMPLIANCE

TCPA & SMS Compliance for Solar Contractors

The TCPA and CAN-SPAM compliance playbook tailored for solar contractors — TCPA class actions don't discriminate by trade size — every SMS to a non-consented number is a $500-$1,500 hit.

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By Trailfire
· Updated July 17, 2026 · 8 min read · Built for Solar →

Key Takeaways for Solar

  • Transactional SMS (appointment confirmation, review request after a residential PV install) needs Prior Express Consent — a lower bar.
  • Marketing SMS (cross-sell, win-back, promotional) needs Prior Express Written Consent — a higher bar with checkbox + disclosure.
  • 10DLC registration is mandatory for business SMS. Without it, carriers throttle or block your messages entirely.
  • Quiet hours: 9 AM-8 PM in the recipient's local timezone. Stricter than federal default, satisfies all state rules.

Why this matters for Solar businesses

Solar businesses send a lot of SMS — appointment reminders, "tech on the way" notifications, review requests, promotional offers. Each non-compliant message exposes you to $500-$1,500 per-violation TCPA penalties. A single class action settles in the $1M-$10M range for businesses your size.

The Solar-specific angle

For solar contractors, the key consent boundary is between transactional and marketing SMS. A review request tied to a completed residential PV install is transactional — prior express consent suffices (the customer gave you their phone number for service purposes). A win-back campaign or cross-sell promotion (a seasonal offer sent to a past panel inspection customer) is marketing — requires prior express written consent with a checkbox. License #s also matter on the SMS side if you reference services that require licensing in your state. Your license-required states for solar include: every regulated state — electrical contractor license required, often plus solar/PV certification.

A solar business sending 1,000 marketing SMS without proper PEWC consent is exposed to $500,000-$1.5M in TCPA liability. The plaintiffs' bar specializes in finding these.

How Heliosun Solar would set this up

Consider Heliosun Solar, a solar operation serving San Diego, CA. A typical residential PV install job at the 1455 Ocean View Way address triggers the following automation:

  1. Technician taps "Job Complete" in the field — residential PV install marked done.
  2. 4 hours later, Aaron receives an SMS asking for a Google review.
  3. Review request mentions panel inspection specifically — feeds Local Pack keyword relevance.
  4. If Aaron leaves a 4+ star review, a 25-card postcard campaign fires to neighbors around 1455 Ocean View Way.
  5. Aaron also gets a referral link — both they and a referred neighbor get a discount on the next job.
  6. Compliance: 9 AM-8 PM quiet hours respected, opt-out logged, license # auto-included on postcards where required.

Read the full pillar guide

This page covers the solar-specific angle. For the complete mechanics — full timing tables, all the templates, the FTC and TCPA detail, and the response-framework playbooks — read the foundational pillar:

Pillar Guide

TCPA & CAN-SPAM Compliance for Service Businesses

The comprehensive playbook covering every angle of this topic for local service businesses.

Read the full pillar guide

More Solar Guides

Built for Solar businesses

Trailfire automates the playbook in this guide for solar contractors — review requests, neighborhood postcards, referrals, and compliance — wired together as one growth engine.