The eight core accreditations
Each accreditation below is independently verifiable with the issuing body. We list the validation link directly for every entry.
MCS Commercial
Held since 2014Microgeneration Certification Scheme — Commercial
Why it matters: Mandatory for Smart Export Guarantee (SEG) eligibility and Salix PSDS funding eligibility. Indicates installer competence on commercial-scale systems.
MCS Commercial differs from MCS Domestic. Commercial certification requires demonstrated capability on three-phase systems, G99 grid connections, and commercial-scale capacity (typically 50 kWp+). MCS-certified installers must use MCS-certified products. Recertification annual.
Verify with issuing body →NICEIC Approved Contractor
Held since 2010National Inspection Council for Electrical Installation Contracting
Why it matters: Mandatory for any commercial electrical installation in the UK. Indicates electrical work meets BS 7671 (IET Wiring Regulations 18th Edition).
NICEIC Approved Contractor scheme requires annual technical assessment, ongoing CPD for engineers, and unscheduled site audits. All commercial solar electrical work issued under NICEIC certification, with EICR certificates valid for insurance, building control, and DNO acceptance.
Verify with issuing body →RECC
Held since 2014Renewable Energy Consumer Code
Why it matters: Consumer protection scheme covering renewable energy installations. Backed by the Chartered Trading Standards Institute (CTSI) and aligned with the Competition and Markets Authority.
RECC membership requires adherence to a specific Code of Conduct covering quoting, contract clarity, warranty terms, complaint handling, and member-funded compensation scheme. Independent dispute resolution via the CTSI-approved scheme.
Verify with issuing body →TrustMark
Held since 2014TrustMark — Government-Endorsed Quality Scheme
Why it matters: Government-endorsed scheme licensing tradespeople in regulated sectors. Required for several grant schemes including ECO4 and the Boiler Upgrade Scheme.
TrustMark licensees undergo background checks, financial probity verification, and ongoing customer satisfaction monitoring. Government-endorsed scheme means customer rights protection equivalent to a regulated trade.
Verify with issuing body →Insurance-Backed Warranty (IWA)
Held since 2014Insurance-Backed Warranty via QANW
Why it matters: Protects customers against installer business failure during the 10-year workmanship warranty period. Workmanship warranty stays in force even if the installer ceases trading.
QANW is an A-rated insurer (A.M. Best rating) underwriting the 10-year IWA on every commercial installation. Should the original installer go out of business, QANW honours the workmanship warranty directly. Essential commercial protection — the warranty most likely to be needed (installer business failure) is the one customers can't directly assess at point of sale.
Verify with issuing body →ISO 9001:2015
Held since 2016Quality Management System (UKAS-accredited)
Why it matters: Externally-certified evidence of consistent operational quality. Standard requirement in major commercial tenders and increasingly required by FTSE customers in supplier audits.
ISO 9001 certification requires documented management system covering customer satisfaction, leadership, planning, support, operation, performance evaluation, and improvement. Annual surveillance audits. Three-year recertification cycle.
Verify with issuing body →ISO 14001:2015
Held since 2017Environmental Management System (UKAS-accredited)
Why it matters: Environmental management consistency. Required in many public-sector tenders. Supports customer Scope 3 emissions reporting (supplier environmental practices).
ISO 14001 documents environmental aspects, legal compliance, environmental objectives, operational controls, and emergency response. Particularly relevant given the environmental nature of solar PV — demonstrates we walk what we sell.
Verify with issuing body →ISO 45001:2018
Held since 2019Occupational Health & Safety (UKAS-accredited)
Why it matters: OHS management system. CDM 2015 expects principal contractors to have OHS systems; major commercial sites increasingly require ISO 45001 in supplier RFPs.
ISO 45001 covers hazard identification, risk assessment, legal compliance, OHS objectives, operational controls, emergency preparedness. Particularly important for working-at-height solar installations.
Verify with issuing body →Additional qualifications and site competencies
Beyond the core eight, our delivery team holds:
- OZEV-approved installer: Workplace Charging Scheme grant work (£350/socket × 40 max). OZEV vouchers redeemed at install.
- CDM 2015 Principal Designer + Principal Contractor: Required for major commercial installations. We hold both designations.
- Working at Height (CITB) certified: All site engineers hold current Working at Height certification per Work at Height Regulations 2005.
- PASMA + IPAF: Mobile elevated work platform (MEWP) certifications for site engineers using scissor lifts and cherry pickers.
- Asbestos Awareness: All site staff hold UKATA-recognised asbestos awareness — important for pre-1999 commercial roof works.
- First aid at work: Multiple site engineers hold HSE-approved first-aid certifications; CDM-required for major projects.
Why we publish this
Trust is the single most under-served conversion lever in UK commercial solar. Most installer websites stop at logos in a footer. We publish the full accreditation register because every claim is independently verifiable with the issuing body — and verifiable claims are the foundation of buyer trust on a £100k+ purchase.
If you're comparing installers and any of these accreditations are missing or unverifiable on a competing proposal, that's a buyer signal worth knowing.