M&E Contrax Resources
MCS Accreditation | Why it Matters When Choosing a Solar Installer
Resource Highlights:
MCS stands for Microgeneration Certification Scheme. It is the UK quality mark for small-scale renewable energy installations, covering solar panels, battery storage, heat pumps, and related technologies.
Without an MCS-certified installation, you cannot access the Smart Export Guarantee, the Boiler Upgrade Scheme, or most other government-backed financial incentives for renewable energy.
MCS accreditation is held by the installer, not the equipment. The certification confirms that the company has met defined standards for competency, processes, insurance, and quality of work, and that these are audited regularly.
Written by Lee Bullingham, Solar PV Installation Lead, M&E Contrax Renewables. Last reviewed: June 2026.
What being MCS Accredited is, what it means, and why it matters
MCS is not the same as being a good salesperson or having a professional-looking website. It is an independently assessed mark that requires ongoing compliance. Checking that your installer holds it before you sign anything takes 30 seconds on the MCS installer finder at mcscertified.com and is worth doing for every quote you receive. Here at M&E Contrax Renewables, we are MCS accredited meaning we can support you through your renewable energy journey and apply for Government grants on your behalf. You can read more about the latest BUS grant here.
This guide explains more about this important certification for any solar, battery and heat pump installation, as well as how to check your installer holds it.
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What MCS stands for and what it covers
MCS stands for Microgeneration Certification Scheme. It is the UK’s quality framework for small-scale renewable energy installations and the products used in them.
The scheme covers solar photovoltaic panels, battery storage systems, air source heat pumps, ground source heat pumps, wind turbines, and other small-scale generation technologies. For most homeowners and businesses in Devon, the relevant certifications are solar PV, battery storage, and heat pumps.
MCS is not a government body. It operates as an independent not-for-profit organisation and is approved by the Department for Energy Security and Net Zero as the standard required for access to government grant schemes and incentive payments. The MCS website at mcscertified.com publishes the register of certified installers and certified products, which is publicly searchable.
Why MCS certification matters to you as a customer
The practical reason most customers care about MCS is financial. Without it, the following are unavailable to you:
The Smart Export Guarantee
The SEG pays you for surplus electricity your solar panels export to the grid. It is the ongoing income stream that improves the financial return from a solar installation for the life of the system. SEG eligibility requires that the installation was carried out by an MCS-certified installer and that the system holds an MCS certificate. An installation completed by a non-MCS installer does not qualify, regardless of how well the physical work was done.
Find out more about The Smart Export Guarantee here
The Boiler Upgrade Scheme
The BUS provides a grant of £7,500 towards an air source heat pump installation. The grant voucher is applied by the installer at the point of sale. An MCS-certified installer is a requirement. If your installer is not MCS-certified, the grant cannot be claimed.
Find out more about the BUS grant here
The Warm Homes Local Grant
Funded installations through Devon’s local councils for eligible households are only carried out by MCS-certified installers. If you are applying for a funded installation, the installer will be MCS-certified as a condition of the scheme.
Find out more about the Warm Homes Local Grant here
Your installation warranty
Many product manufacturers tie their extended warranties to MCS-certified installations. A solar panel manufacturer warranting a panel to 25 years may require that the installation was MCS-certified for that warranty to be valid.
Beyond the financial reasons, MCS accreditation is a meaningful quality signal. It requires the installer to demonstrate competency in system design, product selection, installation, and commissioning, and to be audited on these regularly. It is not a one-time test.
What MCS certification actually requires of an installer
MCS accreditation is not straightforward to obtain and it is not automatic. An installer applying for MCS certification must meet a defined set of requirements covering several areas.
Competency
The installer must demonstrate that the people carrying out installations hold the appropriate qualifications for the technology they are installing. For solar PV, this includes relevant electrical qualifications and solar-specific training. For heat pumps, it includes refrigeration and heat pump-specific certifications. Qualifications are checked at the point of certification and must be maintained.
Quality management system
The installer must have documented procedures covering how surveys are carried out, how systems are designed, how installations are managed, how commissioning is completed, and how complaints are handled. These procedures are reviewed by the MCS auditors.
Insurance
The installer must hold appropriate public liability insurance and professional indemnity cover. The levels required are defined by MCS and confirmed at audit.
Audit
MCS-certified installers are subject to audit by an approved certification body. The audit checks that the installer continues to meet the scheme’s requirements in practice, not just on paper. Installations are reviewed, documentation is checked, and customer-facing processes are assessed. Installers who do not pass an audit can have their certification suspended or withdrawn.
Consumer code compliance
Most MCS-certified installers are also registered with a consumer code such as RECC, the Renewable Energy Consumer Code. Consumer codes provide additional protections for customers including pre-contract information standards, a requirement for fair contract terms, and access to an independent complaints resolution process.
The difference between MCS, NICEIC, and RECC
These three accreditations appear frequently on solar and renewable energy installer websites, sometimes interchangeably. They are different things.
MCS covers the design, specification, and installation of renewable energy systems specifically, solar panels, batteries, heat pumps. It focuses on the technology and the quality of the renewable energy installation.
NICEIC is the leading electrical safety certification body in the UK. It covers the competence of the electricians and electrical installation work carried out on a property. An NICEIC-approved installer is assessed and audited for the standard of electrical work, including wiring, consumer units, and all associated electrical installation. For solar PV and battery storage, the electrical installation is a significant part of the overall project. An installer who holds both MCS and NICEIC accreditation has met two separate sets of independently audited standards covering both the solar system specifically and the electrical installation more broadly.
RECC, the Renewable Energy Consumer Code, is a consumer protection code rather than a technical standard. It sets requirements around how installers communicate with customers, present quotations, and handle complaints. RECC registration means the installer has agreed to specific consumer protection standards and that customers have access to an independent dispute resolution service if something goes wrong.
M&E Contrax Renewables holds all three. MCS covers our solar, battery, and heat pump installations. NICEIC approval covers the electrical installation work carried out by our in-house engineers. RECC registration covers our consumer-facing processes and provides our customers with independent redress if needed.
How to check whether an installer is MCS-certified
The MCS installer register is publicly accessible at mcscertified.com/find-an-installer. You can search by postcode and technology type. The result shows the installer’s name, the technologies they are certified for, and whether their certification is currently active.
This check takes under a minute and is worth doing for every installer who provides you with a quote. The presence of an MCS logo on a website or brochure does not confirm that certification is current. The register does.
When requesting quotes, you can also ask the installer to provide their MCS certificate number. An MCS-certified installer will have this readily available and will be happy to provide it. Reluctance to provide a certificate number is a signal worth noting.
What an MCS-certified installation produces
At the end of an MCS-certified installation, the installer registers the system on the MCS database and issues an MCS certificate for the installation. This document includes the system specification, the date of installation, the installer’s MCS number, and the address of the property.
The MCS certificate is the document that enables you to register for the Smart Export Guarantee. It is also the document that confirms the installation qualifies for grant funding where relevant, and that may be required for product warranty claims. It should be kept in a safe place, as it will be needed for the life of the system.
M&E Contrax Renewables handles the MCS registration and provides the completed certificate as part of every installation handover. You do not need to chase the paperwork.
MCS and the 2025 scheme redevelopment
MCS went through a significant redevelopment of its installer scheme in 2025. The changes strengthened the technical requirements for installers, updated the competency framework to reflect the current range of technologies and system types, and introduced revised audit procedures.
The purpose of the redevelopment was to raise the bar for installer quality and consumer protection as the renewable energy market has grown. For customers, the practical effect is that MCS certification is a more rigorous standard in 2026 than it was several years ago. An installer who has maintained MCS accreditation through the redevelopment process has met the updated requirements.
M&E Contrax Renewables and MCS
M&E Contrax Renewables has held MCS accreditation for solar PV, battery storage, and heat pump installations. Every renewable energy installation we complete is MCS-registered, and we provide the MCS certificate as part of the handover pack for every project.
We also hold NICEIC approval for electrical installation work and are registered with RECC for consumer protection.
You can find more about our accreditations here
If you are comparing installers and want to verify our current MCS accreditation status, search for M&E Contrax on the MCS installer finder at mcscertified.com
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MCS Accredited | NICEIC Approved | RECC Registered | Newton Abbot, Devon | 24/7 aftercare
FAQs
MCS certification means the installer has met defined standards for competency, processes, and quality management, and has been audited on these. It is a meaningful quality indicator and the best independent check available to customers before commissioning an installation. It does not make it impossible for an installation to have a problem, but it does mean that the installer operates within a framework of standards and has access to audit and complaint resolution processes if something goes wrong.
No. SEG eligibility requires an MCS-certified installation. If your existing installation was carried out before MCS certification was established, or by a non-certified installer, you cannot access the SEG through the main route. There is a legacy route for some older systems, but it does not apply to recent installations by non-certified companies.
The MCS certificate for your installation remains valid regardless of what happens to the installer. Your SEG registration, warranty claims, and grant compliance are tied to the certificate and the system, not to the ongoing trading status of the installer. The installer’s consumer code registration may provide additional protection in cases where the installer ceases trading during or shortly after an installation.
Yes. MCS is a UK-wide scheme and operates the same standards in England, Scotland, and Wales. The government grant schemes that require MCS certification, including the Boiler Upgrade Scheme and the Smart Export Guarantee, apply across Great Britain.
If your installation was completed by an MCS-certified installer, you should have received an MCS certificate as part of the handover documentation. If you are not sure whether your existing installation has one, you can search the MCS installation database at mcscertified.com using your postcode.
Further reading
Choosing the right solar installer
Last reviewed: June 2026. MCS scheme requirements and government grant eligibility criteria are subject to change. Always verify current requirements at mcscertified.com and gov.uk.
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