MCS solar installer checks

Understand the claim before comparing installers

MCS certification is technology-specific. Check the current company entry and the scope relevant to solar PV, batteries or solar thermal rather than relying on a logo.

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

Check the company that will carry out the work

Match the trading and legal names on the quotation with the official entry. Ask for the certification number and clarify which business carries out and certifies the installation. If the sales company uses an installation partner, check that partner separately.

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 which installation documents and certificates you will receive and when. For export payments or funding, check the actual programme requirements rather than assuming a badge establishes eligibility.

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 MCS category. They are starting points for checking company claims, not a list of independently verified current members.