Cost of Solar Thermal Installation
across the UK

# Solar Thermal Installation Trade Body Accreditation

Solar thermal installers in the UK are typically accredited through schemes such as the Microgeneration Certification Scheme (MCS), which is the primary certification body for renewable heating systems and is required to access government incentive schemes like the Renewable Heat Incentive (RHI). Other relevant accreditations include membership with trade bodies such as the Solar Trade Association (STA), which provides industry standards and best practice guidance, or certification from schemes like OFTEC (Oil Firing Technical Association) for heating engineers working with solar thermal systems. REAL Assurance and CHAS are also recognised for demonstrating a provider's commitment to health, safety, and environmental standards. For installers working on new builds or major renovations, Building Regulations compliance certification is essential. These accreditations essentially confirm that a company has met specific training, insurance, and quality standards set by the industry, rather than being self-appointed experts.

To verify a provider's credentials, you should request their MCS certificate number and check it directly on the official MCS website, which maintains a searchable register of approved installers. Ask for evidence of public liability insurance, usually a minimum of £6 million for renewable energy work, and request references from recent customers if possible. Checking that they hold appropriate qualifications such as NVQ Level 3 in plumbing and heating, or equivalent certification, is also wise. It matters because unaccredited installers may cut corners on safety, use substandard materials, or leave you ineligible for government grants or warranty protection. An accredited provider gives you legal recourse if something goes wrong and provides assurance that the system has been installed to recognised standards.

Accredited solar thermal installers typically charge 10 to 20 percent more than unaccredited alternatives, reflecting their investment in training, compliance, insurance,