TrustMark & Government Programmes

TrustMark is the only Government Endorsed Quality scheme covering work a consumer chooses to have carried out in or around their home. 

To demonstrate compliance with the most up to date PAS standards and to ensure a sufficient consumer protection process and guarantees are in place, the following schemes and subsidies require a business to be registered with TrustMark. 

Energy Company Obligation (ECO)


The Electricity and Gas (Energy Company Obligation) (Amendment) Order 2019 came into force on 1st January 2020 and includes a requirement for ECO measures to be installed by, or under the responsibility of, a person who is registered with TrustMark for the measure and for the work to be lodged into the TrustMark Data Warehouse.


Green Homes Grant Local Authority Delivery (GHGLAD)


In July 2020, the Chancellor announced £2 billion of support through the Green Homes Grant to save households money; cut carbon; and create green jobs. The Green Homes Grant comprises up to £1.5 billion of support through energy efficiency vouchers and up to £500m of support allocated to Local Authority delivery partners, through the GHGLAD.

The Green Homes Grant is a key part of the government’s plan to ‘build back greener’ and support the transition to net-zero carbon emissions by 2050.

The energy efficiency measures carried out under GHGLAD must be completed by a TrustMark Registered Business.  This requirement is not mandated by BEIS but by the Local Authorities themselves. Where TrustMark Registered Businesses install low carbon technologies, they must also be registered with the Microgeneration Certification Scheme (MCS).

TrustMark Registered Businesses can download the Installer Requirements here.


Sustainable Warmth


Sustainable Warmth is a competition being launched to bring together two fuel poverty schemes (LAD Phase 3 and HUG Phase 1) into a single funding opportunity for Local Authorities (LAs).

The two schemes that make-up the Sustainable Warmth competition have a shared goal to contribute to the aims set out in the Sustainable Warmth: Protecting Vulnerable Households in England Strategy.

Funding is available to upgrade homes both on and off-gas grid and is comprised of:

1. LAD Phase 3: A third phase of LAD with £200m available. LAD3 has a refined scope to support low-income households heated by mains gas.

2. HUG Phase 1: £150m for low-income households with homes off-gas grid

For more information, you can find it on the government website here


Social Housing Decarbonisation Fund (SHDF)


The SHDF Demonstrator project is an initial investment to learn lessons and catalyse innovation in retrofitting for the Social Housing Decarbonisation Fund, for which the manifesto committed £3.8 billion of new funding.

These projects will demonstrate innovative approaches to retrofitting social housing at scale, using a whole-house approach. The projects will retrofit over 2,300 homes to bring them up to Energy Performance Certificate (EPC) band C or higher.

Details of the 17 local authorities to be awarded funding are available on the following page. Projects are expected to complete by December 2021.

Warm Home Discount Scheme (WHD)


In line with the overarching direction of government policy ambition that energy efficiency measures installed under government schemes will be carried out by TrustMark Registered Businesses. The 2021/2022 extension to the Warm Home Discount Scheme (WHD) includes a new requirement that boilers and central heating systems installed and repaired under the scheme are carried out by a TrustMark Registered Business and work must be lodged into the TrustMark Data Warehouse.

The 2021/2022 extension to the Warm Home Discount Scheme (WHD), SY11 includes a new requirement that boilers and central heating systems installed and repaired under the scheme are carried out by a TrustMark Registered Business and work must be lodged onto the TrustMark Data Warehouse. Currently, the requirement is to ensure a measure is lodged on the TrustMark Data Warehouse within 30 calendar days of the installation handover date.

Following feedback from the supply chain, TrustMark, Ofgem and BEIS have jointly decided to temporarily remove the lodgement handover date check from WHD to enable businesses to complete lodgement. This will come into force by 15/11/2021 in order to allow businesses to minimise their measure backlog.

Please note, the 30 days calendar handover date check will be reinstated from 16 December 2021. This means measures with a handover on or after 16 December 2021 will be required to be lodged within the 30 calendar days of the installation handover date.

The WHD is a government scheme for England, Scotland and Wales that supports low-income households with heating their homes.

The following document sets out defined Framework Operating Requirements for installations and repairs delivered under the WHD 2021/2022 extension.


Building Partnerships


TrustMark is also working with Sero, who through the Optimised Retrofit Programme has been awarded more than £7m in funding from the Welsh Government. The Optimised Retrofit project will see circa 1,400 homes across Wales made more energy efficient.

You can find out more about what they are doing by visiting their website.


Become TrustMark Registered


Generally, all work must be carried out with PAS 2030:2019 and or MCS certification and in compliance with the relevant PAS 2030:2019 annexe and or MCS installation standard (MIS) and PAS 2035:2019. Lodgement to the Data Warehouse must be made by a TrustMark registered Retrofit Coordinator.

Businesses wishing to apply for TrustMark registration should visit our online application form or for further information email us at

Make it even easier for customers to find you and grow your business

To become TrustMark registered, select a Scheme Provider to support your application
Not all schemes offer the same trades, so you may have to be a member of more than one
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