Meeting MEES 2027 with a Solar PPA
How a solar PPA can lift your EPC rating to B by April 2030 — and the modelling required to prove it to the asset manager.
The MEES timeline
The minimum to let non-domestic property in England and Wales is EPC E, and two widely-quoted deadlines have changed: the interim EPC C by 2027 was DROPPED, and EPC B moved to a proposed 2031, narrowed to buildings over 1,000 m² (smaller units stay at E), subject to secondary legislation. Many commercial buildings still sit at D/E, so the retrofit case has not gone away — the date has.
Why PPA delivers MEES uplift
Adding solar PV improves the EPC calculation — typically lifting a property by 1-2 letter grades depending on existing fabric and PV capacity.
How much PV you need
For a typical 5,000 m² UK office building rated EPC D, lifting toward B usually requires:
- Solar PV equivalent to 30-50% of annual electricity demand
- LED lighting throughout (separate from PPA)
- Roof / cavity insulation upgrades where applicable
- Heat pump consideration (where heating is fossil-fuel)
Working back from the proposed 2031 EPC B target
- 2031: proposed EPC B target for buildings over 1,000 m² (subject to secondary legislation)
- 2030: system commissioned, EPC re-issued
- 2029: heads-of-terms signed, build underway
- 2028: provider selection complete
- 2027: RFP issued to providers
- Now: roof condition + EPC baseline assessment
What landlords need to do now
- Run current EPC assessments — know your baseline
- Model PV potential per building
- Engage tenants — if cost is passed through service charge or rent
- Co-ordinate with planned LED + insulation retrofits
See what tariff your site qualifies for
A 60-second form gives us enough to match your site to providers and return an indicative tariff range within one working day.
Get an indicative PPA tariffCheck what your roof could earn under a PPA
Meeting MEES 2027 with a Solar PPA — tell us about your site and we'll return an indicative p/kWh tariff for it. Reply by email within one working day.