The ECO scheme stands for Energy Company Obligation which in a nutshell is a government scheme with an end goal of reducing carbon emissions and tackling fuel poverty in vulnerable households, those with low incomes, pensioners and people living with disabilities. The ECO3 scheme is a 3rd phase of the ECO scheme.

To achieve these aims, obligated energy suppliers must promote energy saving measures that not only improve inefficient heating systems but result in cost savings on energy bills. This could be via replacing broken boilers, changing old storage heaters for new or optimising home insulation. 

Each obligated energy supplier (the big six are good examples) must fund the installation of the above measures and their funding target is based on its overall share of the domestic energy market. This means the bigger the supplier, the more funding they must put into the ECO scheme. 

It is up to the obligated energy companies to determine which measures they choose to fund, the level of funding they provide and the installer they choose to work with. In some instances, you may be asked to contribute to the cost of the installation. 

All of the obligated suppliers need to align with a network of installers that can carry out the energy improvements within the homes. To become an accredited installer for the ECO scheme, there are stringent rules in place so that only the best can be selected.


From 1 January 2020, all installers must be TrustMark or equivalent registered businesses, in order to deliver measures under ECO. Most energy services under ECO must be installed by, or under the responsibility of a person who is registered with TrustMark, or an equivalent.

The majority of installations will need to be carried out by a PAS (Publicly Available Specification) certified installer and will have a registration number. CMC have all the relevant and necessary credentials (including PAS) to carry out ECO installations, so you can feel safe in our reliable and licensed hands.

In order to benefit from the ECO3 funding you must own your own home or have the permission of your landlord, including if your property is owned by a social housing provider or management company. To find out more about eligibility criteria, please visit our Am I Eligible for an ECO Grant page.

If you find that you do not qualify due to not meeting the necessary criteria for fuel poverty or vulnerability to cold, you may still be eligible for ‘in-fill’ funding. If your property is in the same terrace as, immediately adjacent to, or in the same building as households that do meet those criteria, you could qualify for solid wall insulation. It is up to your local authority to determine whether you or a member of a qualifying household are eligible.

For further information about this, please give us a call and we can discuss options with you.



  • Boiler Grants - the Government is offering a boiler grant to qualifying households so that they can have an energy efficient gas central heating boiler to replace an old broken boiler.

  • Storage Heater Grants - this provides funding to replace electric room heaters, electric panel heaters or old, faulty and inefficient electric storage heaters with new modern energy efficient storage heaters.

  • First Time Central Heating Grants – available for homes which DO NOT have, and have NEVER previously had a central heating system, this funding provides the install of the following types of central heating boiler:

    • Mains Gas Boiler

    • Biomass Boiler

    • Air Source Heat Pump

    • Ground Source Heat Pump



  • Insulation Grants - as part of the ECO scheme, poorly insulated homes may be eligible for roof or wall insulation grants. This includes:

    • Loft Insulation – due to the fact heat rises it should come as no surprise that up to 25% of the heat created can be lost through the roof of a home. Insulating your roof is quick way to reduce your energy usage.

    • Room in Roof Insulation Grants – as part of the ECO scheme, if you have an uninsulated but usable loft room with a permanent staircase up to it you may qualify for a grant to install insulation.

    • Cavity Wall Insulation Grants - free cavity wall insulation is funded under ECO for qualifying households, helps to keep in the warmth, which in turn saves energy and reduces your heating bills.

    • External Wall Insulation Grants - if your home has solid brick external walls or solid stone external walls which have no insulation, you may qualify for a Solid Wall Insulation Grant.