About ESS

Two men in high visibility jackets and hard hats inspecting equipment outdoors

Learn about the ESS, IPART’s role and how you can get involved

Access the legislation governing the ESS and our annual reports on the scheme’s performance and our key performance indicators.

Our publications explained and where you can keep up-to-date with the latest versions

All you need to know about the Registry of Certificates like who can access it and how to register, transfer and surrender certificates

Woman in high visibility vest and hard hat with clipboard inspecting indoor factory equipment

Answers to common questions including:

  • Energy savings certificates
  • Applying for accreditation
  • Original and nominated energy savers
  • Calculation methods

Information about our online system TESSA that supports the Energy Savings Scheme