ECO4 Project Forms and Tables

ECO4 Measures Table

The ECO4 Measures Table provides information on eligible energy efficiency measures which suppliers can use to meet their obligations for measures installed from 1 April 2022 until 31 March 2026. The table includes the following information for each listed measure: 

• measure category 
• measure type 
• eligibility under each tenure type 
• measure name: format for notification to Ofgem. 

Additional information has also been provided for some measures.

The measure types listed are those which are present in the partial project scores matrix. Where the measure type is not listed in the table, then New Measures and Products should be conducted.

ECO4 Project Forms

The ECO4 Project Forms are used to provide evidence of measure eligibility.

The forms are compulsory for ECO4 Projects where the pre-installation RdSAP/SAP project survey is carried out from 1st November 2022.

Version 2.0 of the ECO4 project forms must be adopted by 15 September 2023 at the latest. Legislative amendments apply from 14 August 2023, irrespective of which version of the forms are used.

Please refer to the ECO4 Project Forms summary of updates document at the bottom of this page for further information.

You can access the following standardised reporting templates at the bottom of this page.

ECO4 Eligibility Requirements

This document is intended to be used to confirm the eligibility of properties receiving measures under the ECO4 Scheme.

ECO4 Pre-Installation Project Survey

This form is designed to collect project-level information before the installation of measures takes place.

ECO4 Pre-Installation Heating Checklist

The purpose of this form is to provide assurance that heating measures installed meet ECO4 requirements. It assesses a home’s pre-main heat source and status with regard to insulation pre-conditions.

ECO4 Post Installation Customer and Installer Declaration Form

The purpose of this form is to capture the details of the completed project and the measure/s within it.

ECO4 and The Great British Insulation Scheme and ECO Reporting and Evidencing Forum Privacy Notice

This privacy notice tells you what to expect when we collect your personal information under the Energy Company Obligation (ECO) or Great British Insulation Scheme.

ECO4 and the Great British Insulation Scheme -Templates to Evidence Private Domestic Premises and Social Housing

These templates are to be used in scenarios where the documents to be provided on request, as outlined in the ECO4 or Great British Insulation Scheme Delivery Guidance, are not available. For example, Land Registry extracts, or a tenancy/occupancy agreement.

Pre-Existing Loft Insulation Declaration

The purpose of this form is to declare the presence or absence of pre-existing loft insulation. It must be signed by the operative, occupier and, or landlord and can be used either for ECO4 or Great British Insulation Scheme. Where loft insulation is installed, this declaration must be completed and physically secured to the inside of the loft.

ECO4 File name convention

The below table provides details of the file naming convention suggested by OFGEM in order to simplify the reporting process for members of the supply chain for ECO4 Projects where the pre-installation RdSAP/SAP project survey is carried out from 1st November 2022.