NICEIC has expanded its accreditation portfolio to include the Microgeneration Certification Scheme (MCS), opening a new pathway for installers in the renewable energy sector. The move allows heat pump, solar, and home battery installers to obtain MCS certification through the established electrical testing authority. This shifts market access dynamics for contractors who previously required separate MCS accreditation routes. The scheme directly impacts installer qualifications and customer eligibility for government incentives linked to renewable installations.