With the future of MEES (Minimum Energy Efficiency Standards) under review and the EPC reform consultation now closed, there’s a lot of uncertainty around what’s next. But there are steps you can take now to stay compliant and protect your assets
Energy Performance Certificates (EPCs) are required when a property is:
- Sold, let, or newly constructed (including when a building is subdivided or combined).
- A valid EPC must be less than 10 years old and is always the most recent one lodged on the register.
- EPCs are categorised into Levels 3, 4, and 5:
Levels 3 & 4 use the standard SBEM methodology
Level 5 uses dynamic simulation modelling (DSM) for more accurate results — often producing better EPC ratings.
Many buildings are now entering their second cycle of expiring EPCs. While there’s currently no legal requirement to renew, maintaining an up-to-date EPC makes good business sense — particularly ahead of expected changes.
EPC Reform – What’s changing?
The EPC Reform Consultation closed in February 2025, with implementation expected in late 2026.
Key proposals include:
The government has indicated existing EPCs will remain valid for their current 10-year term, with new rules applying only to new EPCs. This makes now the ideal time to renew, locking in validity before the changes take effect.
Why Carbon factors matter:
EPC ratings are calculated using carbon emission factors that change over time. Updates in June 2022 significantly reduced the carbon factor for electricity (by 73% since 2013).
That means:
- Buildings with electric heating could see an improved EPC rating simply by reassessment.
- Buildings with fossil fuel systems may worsen under new assessments.
- Re-evaluating your EPCs now could identify easy wins — no improvement works needed.
MEES – The road ahead
Current MEES regulations require all privately rented non-domestic buildings to achieve a minimum E rating.
Future proposals include:
A Band B target by 2031, with an interim milestone of Band C by 2027 (subject to further consultation). The latest government update (October 2025) suggests timelines may shift slightly, but the direction of travel is clear: higher energy efficiency standards are coming.
Key considerations
- Do you have EPCs lodged before June 2022 that could now achieve a higher rating?
- Do you have EPCs expiring in late 2026 that might fall under the new shorter validity rules?
- Are you planning refurbishments and want clarity on how future MEES changes could affect your rating?
If you’re unsure where your risk lies, we’ve got you covered.
How SOCOTEC can help
Our team of accredited energy assessors and sustainability specialists will:
- Review your existing EPCs and identify where re-assessment could add value.
- Use advanced DSM modelling to achieve more accurate results.
- Develop a clear compliance plan aligned with upcoming MEES and EPC reforms.
Make sure your EPCs are up to date and compliant
Speak to our Energy & Compliance team today — we’ll give your building portfolio our full attention and make sure you’re prepared for the next regulatory cycle.
Contact Katy Quilter today on 07977218892 or B&RE-Sustainability@socotec.co.uk
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