ECO guidance

Here you can access guidance and information on the legislative provisions of the ECO2 Order and how we administer the scheme.

The documents below apply to all measures installed on or after 1 April 2015. Any measures installed prior to this date should comply with our previous guidance.

Guidance Date Published
ECO2 2015-2017 Guidance: Administration 1 April 2015
ECO2 2015-2017 Guidance: Delivery 1 April 2015
Publication Date Published
ECO2 Guidance note : Private domestic premises 17 June 2015
ECO2 Guidance note: Loft insulation measures where insulation has recently been removed 16 June 2015

ECO Toolkit

1 April 2015

ECO2 Notice of ‘minded to’ decisions to refuse or revoke 1 April 2015
ECO2 Notifying a supplier of a decision to refuse or revoke 1 April 2015
ECO2 Notice of receipt of an application for extension 1 April 2015
CSV File Format Specification 1 April 2015
ECO2 Chartered surveyor recommended measure report 1 April 2015
ECO2 Privacy Policy 1 April 2015
ECO2 Appropriate Guarantees 1 April 2015
ECO2 AWG Guidance note 30 March 2015
ECO2 District Heating Pre-Conditions (Insulation): Technical Report Template 20 March 2015
ECO2 Electric Storage Heater (ESH) Assessment Checklist  20 March 2015
ECO2 Boiler Assessment Checklist 20 March 2015
ECO2 Technical Monitoring Non-Access Guidance 20 March 2015
ECO2 Virgin Loft Insulation Declaration Template 20 March 2015

ECO2 Monitoring Questions

(For measures installed on and after 1 June 2015)

19 March 2015

ECO Technical Monitoring Questions

(For measures installed between 1 April 2015 and 31 May 2015)

21 May 2014
Bespoke ECO2 software for calculating savings: features for software development 10 March 2015
Home Heating Cost Reduction Obligation (HHCRO): Templates to evidence private domestic premises 2 March 2015
ECO2 Measures Table 4 February 2015
ECO2.1 Data Dictionary 30 January 2015
ECO2 Notification Template

30 January 2015

What our guidance does

It covers the three ECO obligations, outlining:

  • which energy suppliers are obligated under the scheme

  • how they can meet their obligations

  • when and what they need to report on, and

  • information on ECO measures.

What it doesn’t do

It’s not intended as a definitive guide to the legislative provisions of The Electricity and Gas (Energy Company Obligation) Order 2014 (ECO2 Order).

Suppliers are responsible for ensuring that they, and any members of the supply chain acting on their behalf, comply with the applicable requirements of the law.

Need help?

If you have any questions about these documents or on any other area of ECO, please contact us.

Publications and updates

  • Published: 17th Jun 2015
  • Guidance
  • 1 Associated documents
This document is to help suppliers and the supply chain in providing evidence for private domestic premises. It supports the current ECO Guidance: Delivery.

  • Published: 16th Jun 2015
  • Guidance
  • 1 Associated documents
Information on notifying, monitoring and calculating savings for loft insulation measures where pre-existing insulation has recently been removed.

  • Published: 1st Apr 2015
  • Factsheets, Guidance
  • 1 Associated documents
This document lists the guarantees that Ofgem has reviewed and consider to meet the criteria for an appropriate guarantee under the Energy Company Obligation (ECO).

  • Published: 1st Apr 2015
  • Open letters & correspondence
  • 0 Associated documents
This update explains how we have amended the way we let energy suppliers know if we have refused or revoked approval of an energy efficiency measure under the Energy Company Obligation (ECO).

  • Published: 1st Apr 2015
  • Factsheets
  • 1 Associated documents
This document explains how Ofgem will collect, use, and protect personal information that it obtains under the Energy Company Obligation (ECO) scheme.

  • Published: 1st Apr 2015
  • Factsheets
  • 1 Associated documents
Before installing certain Energy Company Obligation (ECO) energy efficiency measures in homes, they must be recommended by a chartered surveyor, or via a Green Deal report.

  • Published: 1st Apr 2015
  • Open letters & correspondence
  • 1 Associated documents
This explains how we let energy suppliers know that we have received an application to extend the notification deadline for a completed measure under the Energy Company Obligation (ECO).

  • Published: 1st Apr 2015
  • Guidance
  • 1 Associated documents
The administration guidance is aimed mainly at suppliers, describing the processes that suppliers and Ofgem follow to meet the requirements of the ECO2 Order.

  • Published: 1st Apr 2015
  • Open letters & correspondence
  • 0 Associated documents
This explains how we let energy suppliers know we intend to refuse or revoke approval of an energy efficiency measure under the Energy Company Obligation (ECO).

  • Published: 1st Apr 2015
  • Guidance
  • 1 Associated documents
The delivery guidance is aimed at suppliers and the broader supply chain, describing how to deliver measures that are eligible to contribute towards the ECO targets.

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