Changes To The MCS... Coming Soon!
- Nick Lundie
- Nov 12, 2024
- 3 min read

Understanding the Upcoming Changes to the MCS Scheme |
The Microgeneration Certification Scheme (MCS) has been a cornerstone of quality assurance for small-scale renewable energy installations in the UK since 2007. As the renewable energy sector evolves, so too must the standards that govern it. In January 2025, MCS introduced a series of significant changes aimed at enhancing both installer experience and consumer protection.
Key Changes to the MCS Scheme |
Shift in Assessment Focus
Previously, MCS assessments placed considerable emphasis on administrative processes and quality management systems. The redeveloped scheme transitions towards evaluating the actual quality of installed systems. This means that assessments will now prioritize on-site performance and the effectiveness of installations over back-office documentation.
Introduction of a Risk-Based Compliance Model
A new risk-based model has been implemented to determine the frequency and intensity of compliance assessments. Installers with a history of high-quality work and minimal complaints may experience fewer assessments, while those with complex operations or higher complaint rates might undergo more frequent evaluations.
Designation of Technical Supervisors
Each installation now requires sign-off by a designated Technical Supervisor. This role replaces the previous Nominated Technical Person (NTP) requirement, ensuring that a qualified individual directly oversees and approves the quality and compliance of every installation.
Centralized Complaint Management
MCS has taken a more active role in handling consumer complaints. The scheme now serves as a single point of contact for consumers wishing to escalate issues, offering proactive case management and clear routes to Alternative Dispute Resolution (ADR) providers when necessary.
Simplification of Scheme Documentation
To improve accessibility, MCS has restructured its scheme documents. The technical requirements have been streamlined into focused "technical truths," making it easier for installers to understand and comply with the standards.
Changes to Consumer Code Membership and Insurance-Backed Guarantees (IBGs)
Under the redeveloped scheme, membership of a Consumer Code is no longer mandatory. Additionally, while the requirement to purchase IBGs has been removed, MCS is developing a new financial protection mechanism to safeguard consumers, ensuring they continue to have confidence in the quality and reliability of their installations.
Implementation Timeline |
The transition to the redeveloped MCS scheme is designed to be gradual. Throughout 2025 and into 2026, there will be a rolling transition period. Installers are encouraged to familiarize themselves with the new requirements and prepare for the changes. MCS is collaborating closely with Certification Bodies to support them in updating their accreditation, ensuring a smooth transition for all parties involved.
Preparing for the Changes |
Installers should continue to comply with the current scheme requirements until officially transitioned to the redeveloped scheme by their Certification Body. This includes maintaining any existing memberships and certifications. It's advisable to review the new scheme documents, attend informational webinars, and engage with Certification Bodies to ensure readiness for the upcoming changes.
Conclusion |
The redevelopment of the MCS scheme represents a significant step forward in promoting quality and consumer confidence in the renewable energy sector. By focusing on the actual performance of installations, simplifying compliance processes, and enhancing consumer protection mechanisms, MCS aims to foster a more robust and trustworthy environment for both installers and consumers.
As renewable energy gains traction, more businesses are seeking MCS (Microgeneration Certification Scheme) certification. This certification not only sets a high standard for installations but also ensures consumer confidence, giving you an edge in the sustainable energy market. In this post, we’ll guide you through the MCS assessment process, how to join the scheme, and what costs are involved.

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