The price cap will rise by £63 in October, the third increase this year. Now Ofgem has approved a £2bn hydro scheme in Badenoch, a remote beauty spot in the Highlands, and the cost of that infrastructure will land on household bills too. The question is whether the long-term gain justifies the short-term pain.
As reported by the Strathspey Herald, local residents fear major disruption during construction, trucks, roads, noise. But for homeowners across the UK, the disruption is financial: network costs already account for roughly 20-25% of a typical electricity bill, and large-scale projects like this push that share higher.
Who pays for the hydro scheme
Ofgem’s approval means the project can proceed, but the cost is recovered through electricity network charges. These are set by the regulator and passed to suppliers, who add them to every household bill. For a typical 3-bed semi using 2,900 kWh of electricity a year, network charges currently sit around £200-£250 annually. A £2bn project spread across millions of customers adds roughly £20-£30 per household per year over the construction period, according to industry estimates from Energy Systems Catapult.
The catch is that this hydro scheme will generate low-carbon electricity for decades, reducing the need for gas-fired power plants that drive price spikes. But the benefit won’t appear on bills until the late 2020s at the earliest. In the meantime, households on standard variable tariffs, around 80% of UK homes, will see a slow creep in standing charges.
What it means for your EPC and energy costs
Improving your EPC rating is the most direct way to cut bills, regardless of grid-level projects. The hydro scheme does nothing for your home’s energy efficiency. Solar panels, heat pumps, and better insulation reduce the amount of electricity you buy from the grid. A typical solar array (3.5 kWp) can save £300-£600 a year on electricity bills, according to the Energy Saving Trust. That dwarfs the £20-£30 annual cost of the hydro scheme.
Heat pumps also benefit: the Boiler Upgrade Scheme offers £7,500 towards installation, and running costs are typically lower than gas heating when paired with solar. The hydro scheme increases the share of renewable electricity on the grid, which makes heat pumps greener over time, but the upfront savings come from your own roof, not a Highland valley.
Real-world action for homeowners
Ofgem’s decision shows grid infrastructure is a collective cost. The best hedge against rising network charges is to reduce your reliance on the grid altogether. That means:
- Get a smart meter to track usage and shift consumption to off-peak times (night rates can be 50% cheaper).
- Install solar panels before the end of the 2025-26 financial year, when the 0% VAT rate on energy-saving materials ends.
- Apply for the Boiler Upgrade Scheme before March 2027 to lock in the £7,500 grant for a heat pump.
- Check if you qualify for the Great British Insulation Scheme, loft and cavity wall insulation can save £300-£600 a year.
Households on standard variable tariffs can switch to a fixed deal if rates fall further, but Ofgem data shows the cheapest fixes are currently 5-10% below the cap. The hydro scheme won’t change that calculus, it’s a long-term bet on grid decarbonisation. Your short-term savings come from efficiency, not waiting for a dam in the Highlands.
Frequently Asked Questions
Yes, indirectly. Network charges, which make up about 20-25% of your bill, will rise slightly to cover the cost of the project. The increase is estimated at £20-£30 per year for a typical household, spread over the construction period.
No. Solar panels and heat pumps reduce your grid reliance and save money immediately, £300-£600 a year for solar. The hydro scheme won't lower bills until the late 2020s, and your home's EPC rating only improves with your own upgrades.
