Energy Company Obligation (ECO)

This page includes all the key documents and information on the ECO4 scheme as well as contacts for further information if you can’t find it here.

Contacts, guidance and resources


To contact an obligated supplier please see Obligated supplier contact details

If you have a query for the ECO team not answered on these pages please email


If you have a complaint about your installation please see the complaints process web page

Guidance documents for installers and other members of the supply chain

See key guidance relating to the Energy Company Obligation (ECO) scheme administered by Ofgem.

ECO4 forums and working groups 

Find out about the work of the Energy Company Obligation (ECO) Stakeholder forums run by Ofgem.

ECO public reports and data 

To see how energy suppliers are progressing towards reaching their targets for this obligation, and the number and types of measures installed, you can visit this dedicated page to view the published monthly reports

Counter Fraud

We take allegations of fraud seriously. To find out how to report suspected fraud, and our role in preventing it, please see our section on Counter fraud.