MEES timeline
2018: minimum EPC E for new lettings. 2023: minimum EPC E for all continuing lettings. 2027 (proposed): minimum EPC C for new lettings. 2030 (proposed): minimum EPC B for all commercial property. The 2027 and 2030 thresholds remain subject to regulatory finalisation but UK government policy direction is clear.
Why solar PV is dominant intervention
For 200,000 sqft warehouse: solar 1 MW = 4.2yr payback + 8-14 EPC points (D to B). LED upgrade = 2.3yr payback + 2-4 points. Roof insulation = 8yr payback + 3-5 points. Solar wins on absolute EPC uplift and combined energy cost saving.
Portfolio rollout strategy
For institutional landlords with 50-500 properties: portfolio MEES gap analysis identifying which buildings are below EPC B; standardised lease addenda template; pre-vetted installer panel; single insurer review process; consolidated EPC monitoring. Sequencing prioritised by lease event timing.
EPC reassessment
After PV commissioning, EPC reassessment by qualified non-domestic energy assessor. New EPC valid 10 years. Cost £400-£1,200. Some councils offer subsidised reassessment as part of business decarbonisation programmes.
Common questions
When is the EPC B deadline?
There is no EPC B deadline in law yet. The June 2026 government position proposes EPC B by 2031 for let commercial buildings over 1,000 m², dropped the earlier EPC C 2027 interim, and confirmed "EPC B by 2030" was never law. The enforceable minimum today is EPC E — but most institutional landlords are planning to EPC B anyway, sequenced around lease events.
What if our warehouse already has EPC C?
EPC C buildings need to reach B by 2030. Required uplift typically 1-4 EPC points. Achievable with moderate solar PV install (300-800 kW) often combined with LED lighting upgrade.