Choosing a solar installer is about more than price. Our recognised certifications, technical assessments and consumer-code membership provide independent reassurance before, during and after your installation. Our team invests in technical training, regular assessment and recognised industry certification so customers receive a safe, compliant and properly documented solar PV or battery installation. These registrations are not simply website badges. They represent ongoing responsibilities covering competence, installation standards, customer service and fair trading. Each organisation has a different role. Together they provide assurance covering technical work, renewable installation standards and customer care. NAPIT is a Government-approved, UKAS-accredited Certification Body operating within the building services and fabric sector. MCS is the UK quality mark for small-scale renewable energy technologies. Its standards cover how systems are designed and installed using certified products. TrustMark is the UK’s Government Endorsed Quality Scheme. Registered Businesses commit to required standards of technical competence, customer service and trading practices. HIES is a Chartered Trading Standards Institute-approved Consumer Code specialising in renewable and home-energy installations. Accreditation matters because customers need confidence that the system has been designed and installed correctly—and that appropriate support and consumer protections are available if something goes wrong. Confirm the business on the relevant NAPIT, MCS and TrustMark online registers rather than relying solely on a displayed logo. Look for a site-specific design, realistic generation estimate, clear equipment details, warranties and an itemised scope. Read the contract, deposit protection, workmanship warranty and complaints process before making payment. Speak to Mr Solar about a properly designed, accredited solar PV or battery installation.Qualifications that give you confidence.
Professional standards backed by independent schemes
Four recognised layers of quality and protection
NAPIT Registered
Check the NAPIT register →
MCS Certified
Find an MCS installer →
TrustMark Registered
Check TrustMark registration →
HIES Consumer Code
Learn about HIES protection →
Standards, documentation and a clear route for support
Three sensible checks for any solar installer
Check registrations
Review the proposal
Confirm protection
Choose your installer with confidence.
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Accredited • Assessed • Consumer Focused
NAPITRegistered electrical contractor
MCSCertified renewable installer
TrustMarkGovernment Endorsed Quality
HIESConsumer code membership
Mr Solar qualifications
Our accreditations
NAPITRegistered Business
Registration: NAP-68241
MCSCertified Installer
Certification: NAP-68241
TrustMarkRegistered Business
Membership: 2974725
HIESConsumer Code
Consumer protection membership
Protection beyond installation day
Technical competenceWork is carried out within assessed areas of competence and applicable standards.
Correct paperworkEligible installations receive the required certificates and system documentation.
Consumer safeguardsHIES protections apply in accordance with the scheme’s current eligibility and terms.
Clear accountabilityRecognised schemes provide standards, processes and routes for raising concerns.
Verify before you appoint
Accreditation and consumer-protection benefits are subject to the relevant organisation’s current rules, scope, eligibility and terms. Customers are encouraged to verify registrations directly with each scheme.