About the ECO tool

We’ve developed this tool because we needed it to administer the Energy Company Obligation (ECO).

While we designed it to assist our administration, we’ve also made it publicly available to help others, such as energy companies, the wider supply chain and consumers.

What can the tool do?

We will use this tool to validate whether a CERO Rural or HHCRO Rural measure is in an eligible CERO Rural or HHCRO Rural area respectively. We do not require suppliers, or their supply chain, to use this tool.

You can use this tool to:

For help using the tool, download our ECO tool Help Guide


Eligibility for CERO Rural and HHCRO Rural may differ and depends on when a measure was/is to be installed. This tool refers to these different time periods as ‘ECO2t’ and ‘ECO3’. The table below details the time period for each:

ECO Time Period Comments
ECO2t 01 April 2017 to 30 September 2018 The ECO2t extension ran from 1 April 2017 and introduced a rural minimum requirement under CERO.
ECO3 1 October 2018 to 31 March 2022 The ECO3 Order is going through the parliamentary process and is anticipated to come into force in winter 2018; there is a possibility it will not be in force on 1 October 2018. Under article 13 of the draft ECO3 Order measures that are completed between 1 October 2018 and the date the ECO3 Order comes into force can contribute towards ECO3 where they are compliant with the ECO3 Order. Rural delivery under ECO3 will also have to meet the household eligibility criteria outlined in our guidance.

You can find further information about the CERO Rural and HHCRO Rural requirements under ECO at our webpage Energy Company Obligation.

Need Help?

For system support queries on this site please Report an Issue

For further guidance or for queries on scheme administration, please see our webpage Energy Company Obligation. Alternatively, contact us at eco@ofgem.gov.uk.

For details on ECO3, see the Government’s: ECO3 consultation response. For queries on legislation and the policy behind ECO please contact beisecoteam@beis.gov.uk.

Energy Suppliers

Energy suppliers obligated under ECO have the option to download a copy of the postcode database for integration with their own systems. This area is password protected, and the account details have been distributed to the energy suppliers.

Download postcode database

For copyright and disclaimer information please see: Copyright and Disclaimer
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