Regulatory

EPC (Energy Performance Certificate)

An Energy Performance Certificate rates a property's energy efficiency from A to G, required when selling or renting and for accessing certain renewable energy incentives.

What is an EPC?

An Energy Performance Certificate (EPC) is a document that rates a property's energy efficiency on a scale from A (most efficient) to G (least efficient). It includes recommendations for improving efficiency.

EPC Ratings

RatingDescription
AMost efficient (92-100)
BVery efficient (81-91)
CEfficient (69-80)
DAverage (55-68)
EBelow average (39-54)
FPoor (21-38)
GLeast efficient (1-20)

When EPCs Are Required

EPCs are legally required when:

  • Selling a property
  • Renting to new tenants
  • Building a new property
  • Applying for certain government schemes

EPCs and Solar

For solar PV installations, EPCs are relevant because:

  • SEG eligibility - some suppliers require valid EPC
  • Improvement potential - shows how solar could improve rating
  • Property value - higher EPC can increase value

EPC Validity

  • EPCs are valid for 10 years
  • New EPC required if significant changes made
  • Solar installation can improve EPC rating

Getting an EPC

EPCs must be produced by accredited Domestic Energy Assessors (DEAs). The assessment typically takes 45-60 minutes and costs around 80-120 GBP.