The average UK household energy bill could fall by more than a third if the country speeds up its switch to clean electricity, according to SSE. That is not a vague promise — it is a concrete number: 35 per cent off the current annual dual-fuel bill of roughly £1,700, or about £600 saved per year for a typical 3-bed semi. The claim, as reported by The Herald, comes from the energy giant’s submission to the government’s review of electricity market arrangements. But what does it mean for homeowners who are not yet generating their own power or running a heat pump?
Who qualifies — and who doesn’t
The 35 per cent figure assumes a world where most homes have ditched gas boilers for heat pumps, and where wind and solar provide the bulk of grid electricity. That is a long way from today’s reality: only about 300,000 heat pumps are installed in UK homes, against 23 million gas boilers. The savings also depend on network charges being restructured so that electricity is cheaper relative to gas — a change Ofgem has consulted on but not yet implemented. Homeowners on standard variable tariffs will see little immediate benefit unless they invest in the upgrades first.
What it costs a typical 3-bed semi
Installing an air-source heat pump costs between £7,000 and £13,000 after the Boiler Upgrade Scheme grant of £7,500. Adding solar panels adds another £5,000–£8,000. The total upfront outlay — £12,000 to £21,000 — is beyond many households, even with the grant. The Energy Saving Trust estimates a typical semi-detached home with a heat pump and solar could cut annual bills by £400–£700, depending on usage and insulation. That aligns with SSE’s 35 per cent headline, but only for those who can afford the capital spend.
The catch — and what the government can do
What SSE’s submission misses is the timing. The 35 per cent saving assumes the grid is fully decarbonised by 2035, but the government’s own target is 2035 for the power sector — and heat pump installations are running at less than half the rate needed. Network charges currently add about £150 to the average electricity bill; rebalancing them could cut that by a third, but the Treasury has resisted because it would reduce tax revenue from gas. Homeowners should not wait for policy to catch up. Those with an EPC rating of D or below can apply for the Great British Insulation Scheme, which covers up to 100 per cent of loft and cavity wall insulation costs.
Three steps to take now
First, check your EPC rating — homes rated C or above are better placed for heat pumps. Second, apply for the Boiler Upgrade Scheme before the current funding round closes; applications are open until March 2027 but budgets are limited. Third, compare electricity tariffs: some suppliers offer time-of-use rates that make heat pumps cheaper to run overnight. The 35 per cent saving is real, but it will not arrive by itself. Homeowners who act now will be the first to benefit when the grid finally catches up.
Frequently Asked Questions
For a typical 3-bed semi using 12,000 kWh of gas and 3,000 kWh of electricity, a heat pump and solar panels could cut annual bills by £400–£700, depending on insulation and tariff. That is roughly 25–40 per cent off the current average dual-fuel bill of £1,700.
The £7,500 grant covers about half the typical installation cost, but the remaining £5,000–£7,000 is still a significant outlay. Households on low incomes or with poor EPC ratings may qualify for additional support through local authority schemes or the Energy Company Obligation.
