TrustMark solar company checks

Understand the claim before comparing installers

TrustMark is a government-endorsed quality scheme. Check the current registered business and relevant work through TrustMark before relying on a directory badge.

Use the official Trustmark information. Source checked 19 September 2026.

Check the company that will carry out the work

Match the registered business with the legal name on the quote and confirm the work category. Read the scheme’s homeowner information and clarify the responsible scheme provider if you need to check a claim.

A company website may contain an old badge, and a similarly named business may be a different legal entity. If the official source and company information disagree, ask the scheme operator or business to clarify before treating the claim as current. We do not independently certify directory entries.

Agree the scope and paperwork

Ask what financial protection, workmanship cover and complaints route applies to your particular job. A directory category does not establish funding eligibility, and scheme membership should not replace a written specification and comparison of proposals.

Tell the contractor whether you need a new installation, a battery retrofit or repairs to an existing system. Ask about recent experience with your equipment and property type, postcode coverage and who responds to problems after handover. A company's credentials alone do not tell you whether it accepts your particular job.

Compare companies using the same brief

Give shortlisted companies the same address, requirements and existing-system information. Request exact equipment models, a survey scope, installed price, exclusions and separate product and workmanship warranty terms. Check the assumptions behind output or savings estimates and ask for changes to the agreed scope in writing.

Use our battery installation guide for storage questions, repair guide for existing faults, or services and brands directory to explore other requirements.

The records below carry an existing Trustmark category. They are starting points for checking company claims, not a list of independently verified current members.