If you’re thinking about installing solar panels, you may have heard the term ‘MCS certificate’ mentioned by installers, energy suppliers or export tariff providers.
It sounds like head-scratching paperwork, but it’s one of the most important documents you receive after your solar panel installation.
While not always a legal necessity, an MCS certificate shows your solar PV system has been installed to recognised standards by an approved installer. That makes it very important if you want to get paid for the electricity you export back to the grid, as Smart Export Guarantee suppliers usually ask for MCS certification or an equivalent approved certificate.
On this page, our expert team answers the question for you: what is an MCS certificate for solar?
What does MCS mean?
MCS stands for Microgeneration Certification Scheme.
It’s a UK quality assurance scheme for small-scale renewable energy systems, including solar panels, heat pumps, battery storage and other low-carbon technologies.
For solar panels, an MCS certificate confirms that your installation has been registered through the MCS scheme. This means the system should have been designed, installed, and commissioned by an MCS-certified installer using suitable certified products.
Why does an MCS certificate matter?
An MCS certificate can help with several things.
- It gives you confidence that your installation is safe and efficient.
- It also gives you useful paperwork for your own records, selling your home in the future, warranty checks, and energy supplier applications.
- Most importantly, it can be needed if you want to apply for a Smart Export Guarantee tariff.
Solar panels often produce more electricity than your home is using at certain times of the day. Instead of that surplus energy going unused, it can be exported to the grid. The Smart Export Guarantee (SEG) is the scheme that allows you to get paid for any surplus electricity you export back to the National Grid.
A SEG tariff allows an energy supplier to pay you for that exported electricity.
To apply, your supplier will usually ask for certain documents. These may include your MCS certificate (or an equivalent scheme, such as Flexi-Orb), proof of address, meter details, DNO approval and other installation information. The exact requirements can vary by supplier.
Do you legally need an MCS certificate for solar panels?
An MCS certificate isn’t a legal requirement for solar panels. However, it does make things much simpler, for the reasons mentioned above.
Without an MCS certificate or equivalent approved certification, you may not be able to apply for export payments. And with no clear proof of installation standards, you could face extra questions around warranties, insurance or future property paperwork.
So, while an MCS certificate isn’t the equivalent of ‘permission to have solar panels’, it does make things much more straightforward.
The best approach? Choose an MCS-certified installer. The price is unlikely to be much different from a non-MCS installer, and it’s by far the safest route.
You can check your solar installer’s MCS certification, or look for an MCS-certified installer, here.
What information is on an MCS certificate?
An MCS certificate includes important details about your solar installation, such as:
- The property’s address
- The installation date
- The technology installed
- The system capacity
- The installer’s details
- The MCS certificate number
- Confirmation that the installation has been registered
Keep this document safe. You may need it when applying for export payments, changing supplier, selling your home or checking your installation records in the future.
When do you receive an MCS certificate?
You should receive your MCS certificate after your solar installation has been completed and registered.
The installer normally handles this process. Once the installation has been commissioned and added to the MCS database, the certificate can be issued and sent to you.
If you’ve had solar panels installed and haven’t received your certificate, contact your installer and ask whether the system has been registered yet.
Your MCS certificate is important, but it’s not the only document you should expect after a solar installation. You may also receive:
- Electrical installation paperwork
- Product warranties
- Solar panel and inverter details
- User manuals
- DNO notification or approval documents
- Handover documents
- Metering information
- Battery storage documents, if a battery has been installed
Again, keep all this information safe, as you’ll need it. A good installer should explain what each document means and why you need it.
What if you don’t have an MCS certificate?
If you don’t have an MCS certificate, the first step is to contact the company that installed your solar panels. Ask whether they were MCS certified at the time of installation and whether your system was registered.
If the system was installed by an MCS-certified installer and registered correctly, you should usually be able to recover the details or request a replacement certificate.
However, if your system wasn’t installed under the MCS scheme, the situation gets a bit more complicated. In some cases, another installer can’t fully inspect the system to confirm its compliance with MCS, so it isn’t possible to issue a certificate.
In some cases, there may not be a simple way to certify the system retrospectively. You may need further inspection, remedial work, or advice from a qualified solar installer. This can become expensive, which is one reason why it’s worth checking your installer’s certification before you agree to the work.
Need help with solar panel installation?
At Electrical Innovations, our team is fully MCS-certified. We’ve installed custom solar PV systems for homeowners like you around the Midlands and beyond.
We always take the time to design a tailored solar setup based on your property and energy needs, maximising your investment and making your life more straightforward.
If you’re interested in learning more about how we can help you save money on your bills, contact our team today. Let’s discuss your solar project and find out what system works best for your home.
