Last updated: 1 April 2026

London · Energy Grants Guide

Energy Grants in Croydon

Free insulation, solar panels, heat pumps and boiler replacements for eligible households in London Borough of Croydon. 47% of local properties may qualify. Fuel poverty rate: 12.4%. Check eligibility below.

Energy Grants & Fuel Poverty in Croydon

Croydon is south London's largest borough by population and has an unusually diverse housing stock. The town centre's high-rise developments contrast sharply with the leafy 1930s suburbs of Purley, Sanderstead, and Selsdon. It's the suburban semi-detached belt that presents the biggest energy efficiency opportunity — tens of thousands of properties with original unfilled cavity walls, single-glazed bay windows, and uninsulated lofts.

GBIS funding is particularly relevant in Croydon, where many homeowners don't qualify for ECO4 on income grounds but live in poorly insulated properties. The scheme's council tax band-based eligibility means most of Croydon's 1930s suburbs qualify for free or subsidised cavity wall and loft insulation without any means test. The council estimates that 40,000 Croydon properties could benefit from GBIS — making it one of the largest potential targets for the scheme in London.

An estimated 40,000 Croydon properties could benefit from GBIS funding — one of the largest potential targets for the scheme in London.

How ECO4 Is Delivered in Croydon

Despite Croydon Council's well-documented financial challenges (the council effectively declared bankruptcy in 2020), the borough's energy advice services have been maintained through partnerships with Croydon Voluntary Action and a network of community organisations. These partners deliver LA Flex assessments, energy advice, and ECO4 referrals in the most deprived wards — New Addington, Fieldway, and Broad Green — where fuel poverty is highest. The community-based delivery model has proved resilient to council budget cuts because it relies on voluntary sector capacity rather than council staff.

Available Grants in Croydon

Residents in the London Borough of Croydon area can access several government-funded energy efficiency schemes:

ECO4 Scheme

The ECO4 provides 100% free energy improvements to qualifying households. In Croydon, 2,760 measures installed to date. Most common: Cavity wall insulation (39%).

Great British Insulation Scheme (GBIS)

The GBIS provides free or subsidised insulation to properties in council tax bands A-D. No means test required.

Boiler Upgrade Scheme (BUS)

£7,500 towards an air source heat pump or £5,000 towards ground source. Available to all homeowners with a valid EPC.

Warm Home Discount

£150 discount on your electricity bill each winter.

EPC Ratings in Croydon

Analysis of 128,400 EPC certificates in Croydon:

47%
ECO4 Eligible (D-G)
12.4%
Fuel Poverty Rate
65
Avg EPC Score

Rating Distribution

A
0.6%
B
8.0%
C
44.4%
D
30.6%
E
11.2%
F
3.4%
G
1.8%

47% of properties rated D-G — around the national average. Fuel poverty: 12.4% (19,500 households), close to the national average of 13.1%.

Housing Stock

157,200 households. Common construction: 1930s suburban semis with cavity walls, average build year 1948.

TypeShare
Semi-detached28%
Flat30%
Terraced22%
Detached14%
Bungalow6%

Most Common ECO4 Measures

2,760 installations to date:

  • Cavity wall insulation
  • Loft insulation
  • Boiler replacement
  • Draught-proofing

Average annual saving: £560

LA Flex Eligibility — Croydon

London Borough of Croydon — LA Flex (SOI v3.2, May 2025)

Income threshold: £36,000

Delivery partner: Croydon Council Sustainable Communities

Targets 1930s suburban semi-detached belt. Referrals from SLaM NHS. Despite financial challenges, community energy advice network maintained.

Local Installers

16 TrustMark-registered and 5 MCS-certified installers serving Croydon. Key areas: Thornton Heath, South Norwood, New Addington, Broad Green, Waddon

Croydon Energy Strategy

Climate Crisis Commission recommended street-by-street insulation. Partnership with Croydon Voluntary Action for community energy advice.

How to Apply

  1. Check eligibility — use our checker
  2. Get matched with TrustMark installers in Croydon
  3. Free survey — assessor recommends measures
  4. Installation — at no cost, usually 4-8 weeks

Contact London Borough of Croydon: https://www.croydon.gov.uk/environment/energy or 020 8726 6000

FAQs — Croydon

How many homes in Croydon qualify for ECO4?

Approximately 47% of assessed properties in Croydon have EPC D or below. Combined with benefits and LA Flex, an estimated 19,500 households could access free improvements.

What is the LA Flex income threshold in Croydon?

London Borough of Croydon's LA Flex income threshold is £36,000. Targets 1930s suburban semi-detached belt. Referrals from SLaM NHS. Despite financial challenges, community energy advice network maintained.

How many installers serve Croydon?

16 TrustMark-registered and 5 MCS-certified installers serve the Croydon area.

What is the fuel poverty rate in Croydon?

Croydon's fuel poverty rate is 12.4% (19,500 households), close to the national average of 13.1%.

How much can I save with ECO4 in Croydon?

Average annual saving: £560. Most common measure: Cavity wall insulation (39%).

📋 Sources & Data

Disclaimer: Independent information service. Not affiliated with London Borough of Croydon or gbe.gov.uk. Data from published sources; verify with your local authority. Last reviewed: 4 March 2026.

Check your eligibility in Croydon

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