More about the ESS

An ESC is a tradeable certificate. ACPs create ESCs from eligible activities. Scheme participants surrender ESCs. 

ESS activities and equipment must meet eligibility requirements. 

These are specific activities that are excluded from the scheme. They cannot be used to create ESCs. 

ESS left hand side

Eligible fuels under the ESS include electricity, gas and others. 

Fuel switching activities can be eligible under the ESS if they meet certain requirements. 

Find out more about the legal framework governing the ESS. 

The ESS Rule applies to ACPs and their energy saving activities. It is updated regularly. 

ESS lower right

Latest ESS news

All ESS news
Heat pump hot water heater
industry: ESS industry: PDRS

Update your fact sheets

16 Oct 2025
Switch to the latest fact sheets by November 17, 2025What has changedWe have updated three fact sheets: HEERHEER heat pump water heatersIHEAB…
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Lighting Applicants
industry: ESS

Information on the end of Commercial Lighting

8 Oct 2025
Information on Commercial Lighting upgrades With commercial lighting implementations ending 31 March 2026, we remind Accredited Certificate…
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TESSA  - Users
industry: ESS

Clarification of Total Thermal Capacity values and change to accepted product list

24 Sep 2025
Total Thermal Capacity for IHEAB implementations clarified in ESS Rule changeThe latest change to the ESS Rule introduced an updated definition for…
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