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.

We update the information in this table on a monthly basis and have included a breakdown of notified measures by category.

The Energy Company Obligation 4 register

The Energy Company Obligation 4 register functionality is undergoing development. We aim to provide a view on projects and supplier compliance progress against their Energy Company Obligation 4 obligations in the coming months.

Measures

Notified Energy Company Obligation 4 measures by category

The table below shows the measures submitted to Ofgem as of 7 March 2024.

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 ECO3 Interim ECO4
Boiler - Repair of an efficient heating system  -    -  
Boiler - Replacement of a broken efficient heating system  1,807  51
Boiler - Upgrade of an efficient heating system to a renewable heating system  -   10,926
Boiler - Upgrade of an inefficient heating system  1  31,959
Boiler - Upgrade to Unknown*  -    49
Cavity Wall Insulation  12,755  15,390
District Heating Connection  2  1,272
Electric Storage Heater (ESH) - Repair of a broken efficient ESH  -  -  
ESH - Replacement of a broken efficient ESH  -    3
ESH - Upgrade of an inefficient heater  1,731  1,538
First time central heating to a non-renewable heating system  1,809  7,145
First time central heating to a renewable heating system  73  5,312
First time central heating to an unknown heating system*  -  23
Heating controls  5,188  183,568
Loft Insulation  4,064  44,707
Other Insulation**  35  2,104
Park Home Insulation  -    393
Room-in-roof Insulation  292  6,577
Solar PV  103  18,021
Solid Wall Insulation  1,585  25,058
Underfloor Insulation 901  1,102
Grand Total 30,346 355,198

Table commentary

A total of 85,259 Energy Company Obligation 4 projects have been submitted, an increase of 8,189 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.

Publications and updates