Alongside your rating, every EPC includes a recommendation report. It lists measures that could improve the property's modelled energy performance, with indicative costs and the rating the software calculates if they were installed.
The assessor does not simply choose which recommendations appear on the EPC.
Recommendations are triggered by the property information collected during the assessment and generated through the approved EPC methodology and software.
How the report is built
Current rating
Calculated from the property data recorded during your assessment.
Recommended measures
Generated by the approved methodology from that same data, with indicative costs and savings.
Potential rating
The rating the software calculates if the listed measures were installed.
A is the most energy efficient. Ratings are calculated from a score out of 100.
- A92+
- B81–91
- C69–80
- D55–68
- E39–54
- F21–38
- G1–20
Illustrative scale. Your rating is produced by the approved assessment methodology using the data collected at your property.
Current and potential ratings
Your certificate shows two numbers: the current rating, calculated from the property as assessed, and a potential rating, calculated as if the recommended measures were in place. The potential rating is a modelled figure, not a guarantee.
Improvements also interact — installing one measure can change the benefit calculated for another, which is why the report is best read as a whole rather than line by line.
Common questions
Before your assessment
Run through the preparation checklist, or see what an assessment costs.