ECO2t Guidance and Associated Documents

Publication date
1st October 2018
Information types
Policy areas

The documents below apply to all ECO2t measures installed between 1 April 2017 and 30 September 2018.

Any measures installed between 1 April 2015 and 31 March 2017 should comply with our ECO2 guidance, which is available on our ECO2 guidance page. Any measures installed before this date should comply with our previous guidance, which is available in the overview of previous schemes section of our website.

Any measures installed on or after 1 October 2018, should comply with our ECO3 guidance and associated documents available on our ECO guidance page. At the time of publication, the draft ECO Order is still subject to parliamentary process, however we expect suppliers to use these documents from 1 October 2018 onwards.

ECO2t Key Scheme Resources (From 1 April 2017 to 30 September 2018)


Date Published

Energy Company Obligation 2017-18 (ECO2t) Guidance: Administration

12 April 2017

Energy Company Obligation 2017-18 (ECO2t) Guidance: Delivery

12 April 2017

Summary of amendments to the ECO2 guidance for ECO2t 

12 April 2017


 Date Published

ECO2t Measures Table 2 Feb 2017
ECO2t Data Dictionary 2 Feb 2017
ECO2t Notification Template 2 Feb 2017
ECO2t Appropriate Guarantees 28 Feb 2017

ECO2t Pre-existing Loft Insulation Declaration

28 Feb 2017
ECO2t Notifying a supplier of a decision to refuse or revoke measures 28 Feb 2017
ECO2t Open letter: Standards of installation for room-in-roof insulation 16 Mar 2017
ECO2t Help to Heat Group guidance note 16 Mar 2017
ECO2t FAQs for Domestic Consumers 16 Mar 2017
ECO2t Boiler Assessment Checklist 16 Mar 2017
ECO2t Electric Storage Heater Assessment Checklist 16 Mar 2017
ECO2t Address formatting guidance note 16 Mar 2017

ECO2t HHCRO Templates to evidence private domestic premises

16 Mar 2017

ECO2t Social housing E, F and G declaration 28 Mar 2017
ECO2t Deemed scores 28 Mar 2017
ECO2t Privacy policy 30 Mar 2017
ECO2t Notice of receipt of an application for extension 30 Mar 2017
The ECO tool 30 Mar 2017
ECO2t District heating pre-conditions (insulation): Technical report template 31 Mar 2017
ECO2t Toolkit 31 Mar 2017
ECO2t Appropriate methodologies 04 May 2017
ECO2t Monitoring 04 May 2017

ECO2t Determining whether premises are domestic premises

22 May 2017
ECO2t Guidance Note: private domestic premises 31 May 2017