About the CSCO tool

We’ve developed this tool because we needed it to administer the Carbon Saving Communities Obligation (CSCO), under the Energy Companies 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 CSCO measure is in an eligible CSCO area. 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 CSCO tool Help Guide


Eligibility for CSCO may differ and depends on when a measure was/is to be installed. This tool refers to these different time periods as ‘ECO1’, ‘ECO1.2’ and ‘ECO2’. The table below details the time period for each:

ECO Time Period Comments
ECO1 01/10/12 to 31/03/14 The ECO scheme first started on 1 January 2013 but measures could be installed from 1 October 2012.
ECO1.2 01/04/14 to 31/03/15 The ECO scheme changed in 2014 and introduced more eligible areas for measures installed from April 2014.
ECO2 01/04/15 to 31/03/17
The ECO2 scheme runs from 1 April 2015.
Postcode information has been provided for the ECO2 scheme before the start of the scheme so that installations can be planned in advance of the scheme starting

You can find further information about the CSCO requirements under ECO at our webpage Energy Companies 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 Companies Obligation. Alternatively, contact us at eco@ofgem.gov.uk.

For queries on legislation and the policy behind ECO please see the ECO pages on 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
This site uses a session cookie which holds no information about the user and is deleted by the browser when the session ends. By continuing to use the site you are agreeing to these terms. Close