Energy Company Obligation public reports and data

Energy Company Obligation public reports and data

Energy Company Obligation 3 interim measures

The Energy Company Obligation 4 order commenced on 27 July 2022 and will run to 31 March 2026. Measures delivered between 1 April 2022 to 26 July 2022 will contribute to Energy Company Obligation 4 delivery and will be known as Energy Company Obligation 3 Interim measures as they are delivered in accordance with Energy Company Obligation 3 regulations.

Suppliers had to notify us of any Energy Company Obligation 3 interim measures installed between 1 April 2022 and 26 July 2022 by the end of September 2022.

Any Energy Company Obligation 4 measures completed between 27 July 2022 and 31 July 2022 also had to be notified by the end of September 2022.

Any measures completed on or after 1 August 2022 must be notified by the end of the month following the month in which installation of a measure was completed.

Progress towards Obligation

Progress towards Phase 1, 2 and 3

To achieve its ECO obligations, a supplier must install measures that qualify under the scheme and deliver annual bill savings for the household.

ECO4 sets a main obligation called the Home Heating Cost Reduction Obligation (HHCRO), which requires energy suppliers to achieve a total of £224.3 million in annual bill savings for domestic premises by 31 March 2026.

The obligation is divided between energy suppliers based on their respective shares of the domestic gas and electricity market.

A supplier meets its obligations under ECO4 by promoting qualifying actions (‘measures’) at eligible domestic premises, and must do so in full no later than 31 March 2026.
           
The overall obligation period for ECO4 runs from the commencement of the ECO4 Order on 27 July 2022 to 31 March 2026 and is split into four phases:

•    Phase 1: 27 July 2022 to 31 March 2023
•    Phase 2: 1 April 2023 to 31 March 2024
•    Phase 3: 1 April 2024 to 31 March 2025
•    Phase 4: 1 April 2025 to 31 March 2026

A supplier’s total obligation is determined by adding together their obligations for each phase. They must meet their total obligation by the end of 31 March 2026.

Measures

Notified Energy Company Obligation 4 measures by category

The table below shows the measures submitted to Ofgem as of 10 February 2025.

This does not include Energy Company Obligation 4 measures that have been notified as exemption measures. For further details on exemption measures, please refer to: Energy Company Obligation (ECO4) Guidance: Delivery.

Measure Type Surplus Actions ECO3 Interim ECO4 Total
Boiler - Repair of an efficient heating system 0 0 0 0
Boiler - Replacement of a broken efficient heating system 1,847 1,804 247 3,898
Boiler - Upgrade of an efficient heating system to a renewable heating system 0 0 22,928 22,928
Boiler - Upgrade of an inefficient heating system 4 1 55,136 55,141
Boiler - Upgrade to Unknown* - - 2 2
Cavity Wall Insulation 13,724 12,723 21,966 48,413
District Heating Connection  0 2 1,317 1,319
ESH - Repair of a broken efficient ESH - - 0 0
ESH - Replacement of a broken efficient ESH 0 0 0 0
ESH - Upgrade of an inefficient heater 1,749 1,724 4,690 8,163
First time central heating to a non-renewable heating system 2,775 1,802 11,008 15,585
First time central heating to a renewable heating system 32 72 9,422 9,526
First time central heating to an unknown heating system* - - 0 0
Heating controls 15,809 5,169 341,930 362,908
Loft Insulation 11,883 4,039 78,998 94,920
Other Insulation** 100 35 3,843 3,978
Park Home Insulation 29 0 753 782
Room-in-roof Insulation 946 290 13,162 14,398
Solar PV 138 103 38,005 38,246
Solid Wall Insulation 6,956 1,570 55,725 64,251
Underfloor Insulation 4,703 896 1,355 6,954
Grand Total 60,695 30,230 660,487 751,412

Table commentary

A total of 160,560 Energy Company Obligation 4 projects have been submitted, an increase of 5,159 projects from the previous month.

*A small number of measures have been submitted with an invalid post main heating source for the property, suppliers will be required to update this information

**Other Insulation includes the following measure types – flat & pitched roof insulation, solid floor insulation, window glazing, draught proofing and higher performance external doors. These measures are grouped together given the low delivery volumes.

Percentage of energy company progress towards obligations and cap

Data is accurate as of 10 February 2025. 

Notified delivery refers to measures and projects which suppliers have submitted to the Energy Company Obligation 4 register. The notified percentage will count partial project scores from non-approved measures, where the measures and projects are still undergoing their eligibility review.

Approved delivery refers to those that have passed eligibility reviews to count towards the obligation target. The approved percentage will count full project scores from approved projects. Where a project has been completed but yet to be approved, partial project scores from the approved associated measures are used.

Please note that:

  • due to notification and validation errors, there are measures and projects which do not have scores generated, meaning the current progress figures do not reflect 100% of delivery towards ECO4. As of 10 February 2025, the data shows progress for 95.6% of delivery, therefore actual delivery is likely to be higher 
  • progress from approved surplus actions carried over from ECO3 is now reflected in the data

Publications and updates