Wales Heat Pump Report: Nest Scheme Impact and Trends

Wales occupies a unique position in the UK heat pump landscape. Welsh homeowners can access both the UK-wide BUS grant and the devolved Nest scheme, giving them more support options than their English counterparts. With a housing stock that includes substantial rural, off-gas-grid areas alongside dense Valley communities, Wales presents both opportunities and challenges for heat pump deployment. This report analyses the data, assesses the impact of the Nest scheme, and identifies what makes Wales' transition distinctive.

Wales has approximately 1.4 million households, with about 22% not connected to the mains gas grid — a higher proportion than England. These off-gas-grid homes, predominantly in rural mid and west Wales, are heated by oil, LPG, or electric storage heaters and face some of the highest heating costs in the UK. For these households, the economic case for a heat pump is compelling. For the full UK context, see our renewable heating scorecard.

Wales Heat Pump Overview

The Nest Scheme Explained

The Nest scheme is Wales' flagship energy efficiency programme, funded by the Welsh Government and delivered in partnership with local authorities. Unlike the BUS grant (which provides a flat cash contribution toward a purchase), Nest provides free home energy improvements — including heat pumps — to eligible households.

Nest Eligibility

• Must be a homeowner or private tenant in Wales
• Receiving means-tested benefits (Universal Credit, Pension Credit, etc.) OR
• Living in an energy-inefficient home (EPC D-G) with a health condition affected by cold
• Property must be the applicant's main residence

Eligible households can receive a complete package of improvements at no cost — potentially including loft insulation, wall insulation, a new heat pump, and upgraded heating controls. The typical value of a Nest package is £5,000-£15,000, with heat pump installations among the most valuable measures.

BUS Grant in Wales

Wales is part of the BUS grant scheme alongside England. The grant (£7,500, or £9,000 for air-to-water or ground source heat pumps replacing oil or LPG in homes without mains gas, from 21 July 2026 to 31 March 2027) is available to eligible Welsh homeowners regardless of income, providing an alternative route for those who do not qualify for Nest. Welsh homeowners therefore have access to more support channels than their English counterparts — BUS for the general population and Nest for those on lower incomes. For full BUS details, see our grants guide.

Regional Patterns Within Wales

Rural Wales: The Sweet Spot

Rural west and mid Wales is a natural fit for heat pumps. Homes are predominantly off the gas grid, heated by expensive oil or LPG. Large gardens accommodate outdoor units easily. Switching from oil can save roughly £500-£1,000 a year at October 2026 prices (heating oil about 11.4p/kWh, indicative); for LPG, compare against your own delivery price. Combined with the £9,000 BUS grant for eligible oil and LPG homes or the Nest scheme, the economics are compelling. Many rural Welsh homes can also benefit from solar panels given the relatively open roof aspects.

The Valleys Challenge

The South Wales Valleys present a different challenge. Housing is predominantly terraced, much of it Victorian or Edwardian with solid walls. Household incomes are lower, making upfront costs a greater barrier. However, Nest and ECO4 specifically target these communities, and the combination of insulation improvements with heat pump installation can dramatically reduce energy bills for some of Wales' most fuel-poor households. Our eligibility checker helps identify available support.

Welsh-Language Support

The Welsh Government requires publicly funded services to be available in Welsh. Nest provides advice, assessments, and documentation in Welsh, ensuring Welsh-speaking communities can access support in their first language. This is an important consideration in areas like Gwynedd, Anglesey, and Ceredigion where Welsh is the dominant everyday language.

Outlook for Wales

Wales is well-positioned for continued heat pump growth. The combination of BUS and Nest provides comprehensive coverage across income levels, rural areas have strong financial incentives to switch, the Welsh Government has committed to ambitious decarbonisation targets, and growing installer capacity is reducing waiting times. The main challenges remain solid-wall insulation for Valleys housing, installer availability in rural areas, and raising awareness among gas-connected urban households in Cardiff, Swansea, and Newport.

Frequently Asked Questions

What grants are available in Wales?

BUS grant (£7,500, or £9,000 for eligible oil and LPG homes off the gas grid until 31 March 2027), Nest scheme (free for eligible), ECO4, and some local authority schemes.

What is the Nest scheme?

A Welsh Government scheme providing free energy improvements including heat pumps to eligible households.

How many heat pumps are installed in Wales?

Approximately 50,000-55,000, representing ~3.5-3.8% penetration.

Does the BUS grant apply in Wales?

Yes — the same grant as England (£7,500, or £9,000 for eligible oil and LPG homes off the gas grid until 31 March 2027), applied for in the same way through MCS installers.

Are there enough installers in Wales?

36 MCS companies per 100,000 households — above UK average but with gaps in rural areas.