Over 270,000 energy efficiency measures installed in the year to September 2025 under the Energy Company Obligation (ECO) scheme, as Autumn budget confirms cuts to energy subsidies.
In this visualisation, we have mapped the number of ECO measures installed and households upgraded by Westminster Constituency in Great Britain.
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Geodata analysis
This morning, the Department for Energy Security and Net Zero released new figures showing a total of 4,360,000 ECO measures have been installed since the start of the scheme, January 2013 to September 2025, with over 270,000 installations taking place in the last year alone. These measures encompass a range of upgrades, including everything from heat pump and solar photovoltaic installations to wall insulation.
The data comes as Chancellor Rachel Reeves announced her decision to terminate the ECO scheme, opting instead to deliver direct cuts to energy bills as part of her Autumn Budget.
The forthcoming energy bill reductions are projected to save households an average of £150 next year. By comparison, measures installed under the fourth iteration of the ECO scheme (ECO4) achieved a total estimated saving of £189 million in annual energy bills from 949,800 total installations.
The Polimapper data team has now mapped the most recent ECO data at the constituency level to illustrate the areas that have benefitted most from the scheme.
The constituencies of Bradford West and Bradford East saw the highest rate of measures installed, at 1,031 and 961 installations per 1,000 households, respectively. This was closely followed by Birmingham Perry Barr (845) and Leicester East (773).
Conversely, London areas such as Battersea, Richmond Park, and Hammersmith and Chiswick are likely to be less impacted, owing to the low prevalence of measures installed under the scheme – at below 20 installations per 1,000 households.
Soundbites
Responding to the budget, Ian Rippin, chief executive at MCS: “MCS is disappointed by the Government’s decision to end the Energy Company Obligation (ECO4) in today’s Budget […]. Government incentives have played an important role in increasing access to home-grown energy for households across the UK, including under ECO4.”
“With ECO4 now set to end on 31 March 2026 and the Warm Homes Plan not yet published, this lack of continuity in support is likely to create substantial challenges for businesses, hinder sector growth, and adversely affect households that would rely on the scheme.”
On scrapping the ECO scheme, Rachel Reeves, chancellor of the exchequer: “It costs households £1.7 billion a year on their bills and for 97 per cent of families in fuel poverty, the scheme has cost them more than it has saved. It is a failed scheme”.
“So, I am scrapping that scheme along with taking other legacy costs off bills. And as a result, I can tell you today that, for every family we are keeping our promise to get energy bills down and cut the cost of living with £150 cut from the average household energy bill from April.”