The Energy Saving Trust has published two new reports this week that together paint a stark picture: the UK’s system for helping homeowners cut energy bills is broken at the advice stage. In one piece, the Trust argues that financial support for home energy efficiency is available but often poorly signposted. In the other, it calls for a national retrofit advice service to plug the gap left by inconsistent local provision. The two reports, released in the last six months, are not separate stories, they are two halves of the same problem.
What the Energy Saving Trust found
The Trust’s analysis, drawn from its own frontline work and local authority data, shows that fewer than one in five households eligible for the Great British Insulation Scheme have applied. The Boiler Upgrade Scheme, which offers £7,500 off a heat pump, has seen take-up concentrated in a handful of regions with active local advice hubs. In areas without such hubs, applications are a fraction of the expected rate. The Energy Saving Trust attributes this directly to the absence of trusted, independent advice at the point where a householder first considers an upgrade. ‘People don’t know what they don’t know,’ the report notes, and without a local adviser, they rarely find out.
The cost of confusion for a typical home
For a typical three-bed semi-detached house in the UK, using around 12,000 kWh of gas and 3,000 kWh of electricity per year, the gap between a poorly advised retrofit and a well-sequenced one is not trivial. A household that installs cavity wall insulation, loft insulation to 270mm, and an air-source heat pump could cut annual energy bills by roughly £800–£1,200, depending on the property’s starting EPC band. Yet many homeowners, lacking clear guidance, opt for a single measure, often a new boiler, that delivers a fraction of the savings. The Energy Saving Trust’s data suggests that a coordinated advice service could double the average saving per household by sequencing measures correctly.
Who pays, and who doesn’t
The financial support landscape is already crowded. ECO4, the Boiler Upgrade Scheme, the Great British Insulation Scheme, and the Home Upgrade Grant (HUG2) all offer different levels of subsidy for different households. But eligibility criteria vary by region, income, and property type, and local authorities often lack the resources to promote them. The result is a postcode lottery: a homeowner in Cornwall might receive a free home energy assessment and a fully funded heat pump, while a neighbour in rural Lincolnshire with identical bills gets nothing but a leaflet. A single, national advice service, accessible online and by phone, would level the playing field and ensure every household knows what it is entitled to.
What this misses, the grant cliff edge
But the Trust’s analysis stops short of addressing a deeper problem: the grants themselves are time-limited. ECO4 runs until March 2026. The Boiler Upgrade Scheme is currently funded until 2028 but has already seen budget reallocations. The Great British Insulation Scheme has been scaled back once. Even with perfect advice, a household that delays a year may find the grant has shrunk or vanished. The Energy Saving Trust’s call for a national advice service is welcome, but advice alone cannot fix a funding model that treats home energy efficiency as a short-term programme rather than a permanent entitlement.
What readers should do next
If you are considering an energy upgrade, start with the Energy Saving Trust’s own Home Energy Scotland or Home Energy Wales services, they remain the closest thing to a national advice line. Check your eligibility for ECO4 via the Ofgem website or your local authority. For heat pumps, the Boiler Upgrade Scheme now covers £7,500 of the installation cost; you must apply before you buy the equipment. And if your home is off the gas grid, the Home Upgrade Grant (HUG2) may cover insulation, solar PV, and heat pumps in full. The key is to act before the advice gap becomes a grant gap.
Frequently Asked Questions
The Trust warns that local retrofit advice services are 'patchy' and inconsistent, leaving many homeowners without the guidance they need to access grants and sequence upgrades effectively. It has called for a national retrofit advice service to replace the current fragmented system.
A typical three-bed semi-detached house could save £800–£1,200 per year on energy bills if insulation and a heat pump are installed in the correct order. Without good advice, savings are often far lower because households choose single measures like a new boiler instead of a full retrofit.
Key schemes include the Boiler Upgrade Scheme (£7,500 off a heat pump), ECO4 (free insulation and heating for low-income households), the Great British Insulation Scheme, and the Home Upgrade Grant (HUG2) for off-gas-grid homes. Eligibility varies by income, property type, and region.
