EPC Rating Improvements from Solar: MEES 2028 Compliance Guide
With MEES tightening to EPC B by 2030, commercial solar can significantly improve your property's energy rating and ensure compliance.
Solar and EPC Ratings
The Minimum Energy Efficiency Standards (MEES) regulations prohibit letting commercial property below minimum EPC ratings. With standards tightening to EPC B by 2030, solar installation can significantly improve ratings and ensure compliance.
Current and Future MEES Requirements
| Date | Minimum EPC | Penalty |
|---|---|---|
| Current | E | Up to £150,000 |
| April 2027 | C (proposed) | TBC |
| April 2030 | B (proposed) | TBC |
How Solar Improves EPC
Solar panels reduce a building's carbon emissions by offsetting grid electricity, directly improving the EPC rating. Impact depends on:
- System size relative to building consumption
- Building's existing rating
- Other energy efficiency measures
Typical EPC Improvements
Solar can typically improve EPC by 1-2 bands:
- D to C: Moderate system often sufficient
- C to B: May need larger system or additional measures
- B to A: Typically requires solar plus other improvements
Financial Implications
Properties failing MEES face:
- Inability to let or renew leases
- Significant fines (up to £150,000)
- Reduced property value
- Difficulty securing financing
Investment Case
Solar installation for MEES compliance delivers dual returns: rental income protection and energy cost savings. The investment typically pays back through energy savings while maintaining property value and lettability.