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ECO4 Delivery Guidance
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ECO4 Contacts, Guidance and Resources’
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The ECO4 Delivery guidance and measures table are for suppliers and the supply chain. They provide guidance on the fourth Energy Company Obligation scheme, ECO4, including:
- how a supplier meets its obligations
- the eligibility of different homes and the households that occupy them
- the eligibility of different energy efficiency measures
- the measure and project notification processes
- measure and project scores
- technical and score monitoring
- auditing and counter-fraud processes
See the summary of updates document for summaries of changes between versions of the Delivery Guidance and Measures Table.
You can find other ECO4 guidance documents on our Contacts, Guidance and Resources page.
Main document
[ECO4 Delivery Guidance v3.0 [PDF, 3.25MB]
Subsidiary documents
[ECO4 Measures Table v4.0 [XLSX, 82.46KB]
](https://www.ofgem.gov.uk/sites/default/files/2025-08/ECO4%20Measures%20Table%20v4.0.xlsx)
[Summary of updates to ECO4 Delivery Guidance and Measures Table [PDF, 330.71KB]
Related links
ECO4 Contacts, Guidance and Resources’