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Warm Homes Programme

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Welsh Government Warm Homes, which includes the Arbed and Nest schemes, provides funding for energy efficiency improvements to low income households and those living in deprived communities across Wales.

It supports our commitments to:

  • reduce climate change, 
  • help eradicate fuel poverty,
  • boost economic development and regeneration in Wales. 

Both schemes consider a whole house approach to home energy efficiency improvements. This helps to tackle harder to treat homes where the impact of fuel poverty tends to be most severe.

Since 2012, we have invested over £150 million and improved over 27,000 homes, reducing energy bills and helping households to heat their homes at a more affordable cost. 

In 2015 – 16 the Nest scheme received £25.5 million and improved 6162 homes.  Arbed received £19 million and improved 1971 properties.

Cold calls warning

We have been made aware of businesses and doorstep callers who are falsely claiming to install energy efficiency measures at domestic properties on behalf of the UK or the Welsh Government. These businesses have been requesting up-front payment for the work, or offering solar panels at a significant loan cost.  Some of these businesses are currently operating in areas such as Pentre and Tylorstown in Rhondda Cynon Taf where legitimate Welsh Government funded schemes are in progress.

The Welsh Government Warm Homes schemes, Nest and Arbed, do not cold call householders. They do not require any payment from householders and they do not offer loan deals.

If you are approached and offered home energy efficiency improvements you should ensure that:

  • You know the name and address of the organisation contacting you and are provided with their business documentation.
  • You know the name of the scheme you are being offered.
  • You are provided with confirmation in writing of the work that will be carried out at the property, who will be carrying out the work,  how long  the work will take and how much you are expected to contribute to the cost.
  • You think carefully before agreeing to any work, particularly before paying any money in advance of work being completed.
  • If you are asked to pay for work, you check first whether you are eligible for free improvements under the Welsh Government Warm Homes Nest scheme.

If you suspect that an organisation is wrongly claiming to be offering Welsh Government funded home energy efficiency improvements, you can contact your local Trading Standards Office.

If you would like advice on making your home more energy efficient or to check if you are eligible for a package of free home energy efficiency improvements, you can contact the Warm Homes Nest scheme on Freephone 0808 808 22 44 or via the Nest website.


Arbed has two delivery approaches. One is the EU funded element of the scheme which has been delivered for Welsh Government by procured scheme managers.  The other is through us continuing to provide grant funding to local authorities, to enable them to manage energy efficiency schemes in their areas.

Retro-fitting measures and technologies considered under Arbed include: 
  • Solid wall insulation,
  • Loft insulation and draught proofing,
  • Boiler and heating system upgrades (controls),
  • Heat pumps,
  • The provision of energy saving advice.
Since 2012 over 60 schemes have been delivered under both parts of Arbed, creating over 1,000 local jobs and exceeding our targets for reducing greenhouse gas emissions and reducing the impact of fuel poverty on households in Wales.

Community Benefits

The schemes have a strong emphasis on the delivery of community benefits by using the local supply chain, providing job growth and engaging with the communities and schools in the areas. See the links for some Arbed case studies.  


The Nest scheme (external link) provides householders living in Wales with access to free advice and support to help them reduce their energy bills. Those meeting Nest’s eligibility criteria can access a free package of energy efficiency measures. Further details can be found by calling the Nest helpline Tel: 0808 808 2244

Nest measures are designed for individual properties so there is no standard package. Measures can include:

  • a new gas boiler,
  • central heating system,
  • insulation,
  • newer technologies such as air source heat pumps.  
This scheme does not include windows and doors.

British Gas is the scheme manager for Nest. The Energy Saving Trust is a sub-contractor to British Gas and provides the front end service. Small and medium sized enterprises across Wales are sub-contracted by Nest to install agreed energy efficiency measures at domestic properties. The Nest scheme does not cold call households and all marketing materials carry the ‘Nest’ and Welsh Government logos.

The contract for the Nest scheme ends on 31 March 2018. The 12 week public consultation period for the Nest scheme replacement is now closed and our response to the public consultation was published 23 December 2016.