MCS, the UK's quality mark for small-scale renewable energy installations, is replacing its previous certification model with a redeveloped scheme rolling out through 2026. The changes affect how installers are assessed, which documents they must keep, and what financial protection they must give. If your software handles MCS compliance, it needs updating. If it does not handle MCS compliance at all, you are doing it manually, and now is a good time to stop.
The old scheme treated every installer the same way. The new one does not. MCS calls it simpler, focused on outcomes, and answerable to consumer protection standards. The key changes:
Under the previous scheme, every installer faced the same assessment schedule regardless of track record. An installer with a clean record may now need a site assessment only every three years, and not every year. A clean record means no faults found, a steady business, and no complaint upheld. For well-run businesses, this is a significant reduction in compliance burden and cost.
The software implication: your system must keep a clean record of every installation, every certificate, and every customer interaction. The benefit of risk-based assessment only materialises if your documentation is complete and searchable. A missed certificate or a gap in your records could trigger more frequent assessment.
Every installer must give the customer an MCS-approved financial protection product to customers for every installation. This is not optional. The product protects the consumer if the installer ceases trading or fails to honour warranty obligations.
Your software must know which financial protection covers each installation. It must hold the policy details. It must put the documents in the handover pack for the customer.
The redeveloped scheme shifts emphasis from process compliance (did you follow the checklist?) to outcome compliance (does the installation perform as specified?). This means performance monitoring data, commissioning records, and post-installation validation become more important in the documentation trail.
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| Platform | MCS Certificate Tracking | Financial Protection | Handover Packs | Notes |
|---|---|---|---|---|
| Payaca | Yes (built-in) | Manual tracking | Partial | Only dedicated UK clean tech platform. Handles MCS proposals out of the box. |
| IAA E2E Platform | Yes | Yes | Yes | Free for IAA members. Built specifically for MCS compliance, both current and redeveloped. |
| Pylon | No | No | Partial | Solar design and proposal tool. Not a compliance platform. |
| OpenSolar | No | No | No | Free solar design tool. No UK compliance features. |
| Jobber / SimPRO | No | No | No | Generic field service tools. MCS compliance is entirely manual. |
The new scheme rests on your record. A clean record buys you a site assessment every three years instead of every year. That makes the record worth something, and worth checking.
Most installers hold that record as documents. Certificates in folders, policy numbers in a spreadsheet, handover packs as PDFs. Each of those is something a person can write, so each is something a person can rewrite.
On engage.re each certificate, protection policy and commissioning record is a declared record with a permanent identifier. Every action goes to a signed log, and each entry holds the hash of the one before it. Nothing can be added or replaced later without breaking the chain, so your clean record is evidence rather than a claim.
Every installer we build for shares that foundation, so a change to MCS is made once for all of them. We explain that in bespoke software for a whole sector.
Some firms do 100 installations a year or more, with several teams, on both solar and heat pumps. For them the gap is wide between what a general platform gives and what MCS asks for. That makes a strong case for a system of your own.
A system built around the way you work can run the whole MCS chain for you. The survey. The design. The installation. The commissioning. The certificate you send. The financial protection you assign. The handover pack it writes. The warranties it follows. It can also handle BUS grant documentation, DNO applications, and post-installation performance monitoring in one place rather than across three or four separate tools.
The MCS Redeveloped Scheme rewards clean records with reduced assessment frequency. A system that ensures nothing falls through the cracks directly affects your bottom line by keeping you in the lowest assessment tier.
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