MCS — the Microgeneration Certification Scheme — keeps coming up when people research solar panels or battery storage. Here’s a plain explanation of what it is and why it matters.
What MCS covers
MCS is a UK quality assurance scheme for low-carbon technologies — solar PV, solar thermal, battery storage, air source and ground source heat pumps, and biomass systems. It sets standards for both the products used and the installers who fit them.
Why it matters in practice
The most concrete reason to care about MCS is the Smart Export Guarantee (SEG). If you want to get paid for electricity you export to the grid from your solar panels, your installation must be carried out by an MCS-certified installer. Without it, you simply can’t access export payments — and that’s money you’d otherwise be leaving on the table over the lifetime of the system.
Beyond the SEG, some mortgage lenders, insurers, and planning authorities expect MCS certification for renewable installations. It also comes with a workmanship warranty and consumer protection as part of the scheme.
Is it legally required?
No — but it’s strongly advisable. An installer without MCS certification can legally fit solar panels, but they can’t certify the installation for SEG payments or many grant schemes. It’s not a box-ticking exercise; it’s how you know the work has been done to a standard that qualifies for the financial benefits solar is supposed to bring.
How to check
The MCS Find a Contractor tool lets you search by location and technology type. Any legitimate MCS-certified installer will be listed there.
We’re MCS-certified and based in Bristol. If you’re looking at solar, battery storage, or other renewable technology, get in touch and we’ll talk you through your options.
