Energy Company Obligation ECO4 Flex

The Energy Company Obligation (ECO4) scheme supports low income and vulnerable households by providing free energy upgrades to their homes. The scheme will improve the least energy efficient homes helping to meet the Government’s fuel poverty and net zero commitments.

The ECO4 scheme will run until March 2026.

The flexible approach for local authorities to identifying fuel poor and vulnerable households who may benefit from heating and energy saving measures is referred to as ECO4 Flex.


Eligibility for the scheme is based on households adhering to at least one of the four available routes:

Route 1

Standard Assessment Procedure (SAP) bands D, E, F or G owner-occupied households and private rented sector E, F or G households with an income of less than £31,000.

Route 2

SAP bands E, F or G owner occupier and private rented sector households that meet a combination of two of the following proxies:

  • Proxy 1: Homes in Lower Super Output Areas 1-3 (LSOA)
  • Proxy 2: A person living at the premises receives a Council Tax reduction on the grounds of low income
  • Proxy 3: A person living at the premises is considered to be vulnerable to the cold under the National Institute for Health and Care Excellence (NICE) Guidance: Recommendation 2, for a reason other than their low income
  • Proxy 4: A child living at the premises is eligible for free school meals, due to low-income
  • Proxy 5: A householder supported by the Local Energy Advice Partnership (LEAP), which supports low income and vulnerable households as per the NICE Guidance
  • Proxy 6: A household referred to us for support by their energy supplier or Citizen's Advice, because they have been identified as struggling to pay their electricity and gas bills

Proxies 1 and 3 cannot be used together.

Route 3

SAP bands D, E, F or G households that have been identified by their doctor or GP as vulnerable, with an occupant whose health conditions may be impacted further by living in a cold home. These health conditions must be cardiovascular, respiratory, immunosuppressed, or limited mobility related.

This is because we have identified a positive correlation between households who suffer from long-term health conditions and living in poorly insulated homes.

Route 4

SAP band D, E, F or G households that are referred under Route 4: Bespoke Targeting. We may work with AgilityEco and energy suppliers to submit applications to the Government Department for Business, Energy and Industrial Strategy where they have identified low income and vulnerable households, who are not already eligible under the existing routes.

How to apply

Our ECO Flex Administration project is managed by AgilityEco, who can assess households as part of their free Local Energy Advice Partnership (LEAP) programme. LEAP offers a range of energy advice and an experienced advisor can talk you through the support available via ECO and the eligibility requirements, as well as other grants and schemes that might be suitable for you. To apply for LEAP please visit the LEAP website or call 0800 060 7567.

For general enquiries relating to the Statement of Intent for the scheme please email AgilityEco at

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