ECO4 in Cardiff and the surrounding areas.
Make your home warmer, lower your energy bills, and cut carbon emissions with ECO4 support available across Cardiff and the surrounding South Wales area.
ECO4 Grants in Cardiff — Save Energy, Reduce Costs, Stay Warm
If you’re a homeowner or private tenant in Cardiff or the wider South Wales region, you may be eligible for funding through the UK Government’s ECO4 scheme (Energy Company Obligation).
ECO4 provides grants for energy-efficient home improvements designed to make your home warmer, reduce your energy bills, and help lower carbon emissions.
The scheme runs until March 2026 and supports households throughout Cardiff and nearby areas, including Penarth, Barry, St Mellons, Llanrumney, Ely, Canton, Pontypridd, Caerphilly, Rhoose, Cowbridge, and Bridgend.
Eligible properties may receive upgrades such as modern heating systems, insulation, ventilation improvements, smart heating controls, and renewable technologies, including solar panels.
Our Cardiff-based team manages the entire process for you — from checking eligibility to arranging installation — using only TrustMark-registered and PAS-accredited installers.
Start improving your home today:
- ✅ Check if your Cardiff property qualifies for ECO4 funding
- ✅ Arrange a free home energy assessment
- ✅ Enjoy lower bills and a more energy-efficient, comfortable home
➡️ Start your free ECO4 eligibility check now — it only takes a few minutes and could unlock over £30,000 of government-funded home upgrades.
What is ECO4?
ECO4 is the UK Government’s Energy Company Obligation scheme running until March 2026.
It funds energy-efficiency improvements in eligible homes through obligated energy suppliers.
The aim is to improve EPC ratings, reduce household energy costs, and help tackle fuel poverty. Many ECO4 grants exceed £30,000.
Who can qualify?
You may be eligible if any of the following apply:
Financial or EPC criteria
- Your household’s total gross annual income is below £31,000, or
- You receive qualifying income-related benefits (e.g., Universal Credit, Pension Credit), and
- Your home has a low EPC rating of E, F, or G
Health-related eligibility (via ECO4 Flex)
You may also qualify if someone in the home suffers from:
- A cardiovascular condition
- A respiratory disease
- Limited mobility
- Immunosuppression
Areas we cover across Cardiff & South Wales
- Cardiff: St Mellons, Llanrumney, Canton, Ely, Splott, Grangetown, Penylan, Roath, Whitchurch, Llandaff, and more
- Vale of Glamorgan: Penarth, Barry, Dinas Powys, Cowbridge, Llantwit Major, Rhoose
- Rhondda Cynon Taf: Pontypridd, Llantrisant, Tonyrefail, Porth
- Caerphilly County Borough: Caerphilly, Bedwas, Ystrad Mynach, Abertridwr
- Bridgend: Bridgend town, Pyle, Pencoed, Brackla
What can ECO4 fund?
Funding is tailored to your home and eligibility. Common improvements include:
Insulation
- Cavity wall insulation
- External or internal solid wall insulation
- Loft insulation
- Room-in-roof insulation
Renewable Technologies
- Solar PV panels
- Air Source Heat Pumps
Heating & Controls
- Smart thermostats and heating controls
- High-efficiency heating upgrades (where applicable), including Air Source Heat Pumps
How the process works
- Quick eligibility check — provide your postcode, tenure, and a few basic property details.
- Free home assessment — we review EPC information and arrange a survey if needed.
- Funding confirmation — we confirm whether ECO4 covers the full cost or if a small contribution is required.
- Installation — accredited installers complete the upgrades with minimal disruption.
- Aftercare — documentation, warranties, and support provided after installation.
Why choose our local Cardiff team?
- End-to-end support from eligibility checks through to aftercare
- Specialist knowledge of Cardiff property types and building styles
- Network of trusted, accredited assessors and installers
Landlords & Letting Agents
ECO4 can help improve EPC ratings in private rented properties. We handle tenant communication, gain necessary permissions, and schedule works to minimise disruption or void periods.
