87% of British adults cannot identify where their energy bill spend goes. That is the finding of a new poll, and it explains why so few households take action on the one thing they can control: their own home’s efficiency.
The survey, reported by The Herald, asked 2,000 UK adults to estimate the breakdown of their bill. Only 13% got within 10 percentage points of the real split. The rest had no idea that wholesale energy, the gas and electricity itself, accounts for roughly 45% of the total. Network charges, which cover pipes and wires, take another 25%. Policy costs, green levies and social schemes, eat 15%. Supplier margins and operating costs make up the rest.
What this means for your annual bill
Ofgem’s price cap for a typical dual-fuel household paying by direct debit now stands at £1,736 per year. That means about £780 goes to wholesale energy, £434 to network charges, and £260 to policy costs. The remaining £262 covers the supplier’s admin, profit, and VAT.
The catch is this: you cannot negotiate wholesale costs. You cannot opt out of network charges. But you can shrink the volume of energy you buy, and that cuts every line item proportionally. A 20% reduction in usage saves roughly £350 a year at current prices.
Energy Saving Trust data suggests the average 3-bed semi loses 35% of its heat through walls and roof. Loft insulation costs around £300 to install and saves £200 a year. Cavity wall insulation runs £500-£1,500 and saves £250 annually. Those are payback periods of 18 months to 6 years, better than any savings account.
Who qualifies, and who doesn’t
The Great British Insulation Scheme, launched in 2023, offers free or subsidised insulation to households with an EPC rating of D or below and living in council tax bands A-D in England and Wales. The Boiler Upgrade Scheme provides £7,500 off a heat pump in England and Wales, enough to make the switch cost-competitive with a new gas boiler.
Yet take-up remains low. Only 120,000 households applied for the insulation scheme in its first year, against a target of 300,000. The government blames lack of awareness. The Herald’s poll suggests a deeper problem: people don’t know what they’re spending, so they don’t know why they should act.
What to do by end of 2024
First, get your Energy Performance Certificate. It costs £60-£120 and tells you exactly where heat is escaping. Second, check eligibility for the Great British Insulation Scheme at gov.uk. Applications close when funding runs out, and it will. Third, if your boiler is more than 10 years old, get a quote for a heat pump under the Boiler Upgrade Scheme before the grant cap drops in April 2025.
Households on standard variable tariffs can also switch to a fixed deal. Ofgem data shows the cheapest fix is about £100 a year below the price cap. That is £100 you can put towards insulation, or simply keep.
The 87% figure is a scandal of complexity, not of ignorance. Energy bills are opaque by design. But once you pull back the curtain, the path to lower costs is clear: insulate, electrify, and fix your tariff. Start with the free tools at the Energy Saving Trust website. Your bill will thank you.
Frequently Asked Questions
Wholesale energy costs (the gas and electricity itself) make up about 45% of the typical bill, according to Ofgem. You cannot control this price, but you can reduce the amount you use, and that cuts every other cost proportionally.
Yes, if your household has an EPC rating of D or below and you live in council tax bands A-D in England or Wales. The Great British Insulation Scheme covers cavity wall and loft insulation at no cost. Apply through gov.uk before funding runs out.
