How the £28bn Grid Overhaul Will Raise UK Bills But Unlock Cheaper, Clean Power

UK households are expected to see higher energy bills over the next decade after the energy regulator approved a £28 billion package to upgrade Britain’s gas and electricity networks, with total network charges forecast to rise by about £108 per home by 2031. Regulators argue that while bills will go up in the short term, investing now should avoid even higher costs later by reducing grid bottlenecks and exposure to volatile gas prices as more low-carbon power – including solar PV – connects to the system.

The approved £28 billion is part of a wider investment plan that could reach about £90 billion by 2031 across both gas and electricity networks, making it the biggest grid modernisation programme in generations. Around £17.8 billion will go into maintaining and reinforcing Britain’s gas networks, while about £10.3 billion will be spent on electricity transmission projects such as new power lines, substations and advanced control systems. In total, regulators estimate that this will add roughly £48 a year to network charges for gas and £60 for electricity by 2031, taking the gross impact on the typical household bill to around £108 per year.

However, once expected savings from a stronger, less constrained grid are included – particularly lower “constraint” payments and reduced reliance on imported gas – Ofgem calculates that the net increase should be closer to £30 per household per year, or under £3 a month, by 2031. The logic is that a more capable grid lets cheaper renewable power flow freely from where it is generated to where it is needed, cutting expensive curtailment and helping to stabilise wholesale prices over time.

For homeowners, this means network charges will become a bigger and more visible line on bills even as unit prices fluctuate with global markets. Households that invest in solar PV and battery storage will be better placed to shield themselves from these rising network costs by generating and using more of their own electricity, particularly at peak times when grid fees and wholesale prices can be highest.

Atlantic Renewables’ team of experts can help you design a solar PV and battery system that reduces your dependence on grid electricity and softens the impact of rising network charges over the coming decade.

Why Such a Large Grid Upgrade is Needed

The grid upgrade is being driven by three main pressures: replacing ageing assets, connecting huge volumes of renewable generation, and supporting the electrification of heat and transport. National Grid has warned that electricity demand could increase by around 50% by 2035 as heat pumps and electric vehicles become mainstream, with even faster growth in some local areas.

Without major investment, parts of the existing transmission network would become a bottleneck, forcing wind farms and solar parks to be switched off even when they could produce cheap, clean power. Constraint payments to generators already cost consumers billions over recent years; strengthening the grid is expected to cut these costs by around £80 per household cumulatively by 2031 compared with doing nothing.

For solar PV owners and those considering installing panels, a stronger grid also opens the door to better export opportunities, smarter tariffs and more scope to add technologies such as batteries and EV chargers without running into local connection barriers. That makes now a good time to consider future-proofing your property with a well-designed solar-plus-storage system.

How Much More Will Households Actually Pay?

According to Ofgem’s determinations for the 2026–2031 period, the £28 billion of upfront investment will filter through to bills mainly via higher network charges. The regulator’s modelling suggests that by 2031:

• Around £48 of a typical annual bill increase will be linked to gas networks, largely covering asset replacement and safety-related maintenance.
• Around £60 will be associated with electricity transmission spending, which funds about 80 major projects to expand and modernise the high-voltage grid.

Overall, this results in an estimated gross rise of £108 per household per year by 2031. After accounting for avoided constraint costs and lower wholesale prices enabled by the stronger grid, Ofgem reports that the net effect should be about £30 per year – though the precise impact on any given household will vary with usage, tariff type and future market conditions.

From a budgeting perspective, households should assume that, even if the headline energy price cap falls, the “wires and pipes” component of bills will trend upward as this investment programme rolls out. Generating more of your own power through rooftop solar PV is one of the most reliable ways to push back against that structural increase.

What This Means for Businesses and Industry

Businesses will also see higher network fees, with Ofgem indicating that small commercial users such as holiday lets or retail kiosks might face network charge rises of around £60 per year, while a medium-sized factory could see an increase approaching £10,000 annually by 2031 before savings are netted off. For energy-intensive sites, this makes on-site solar PV and battery storage a compelling hedge not just against wholesale prices but also against rising grid-use charges and potential future capacity or peak-time tariffs.

At the same time, the upgrade should enable faster connections for new industrial projects, data centres, logistics hubs and electrified manufacturing, supporting economic growth and the UK’s net zero pathway. That interplay between higher near-term costs and long-term system benefits is at the heart of the current debate about fairness and affordability.

Atlantic Renewables works with commercial clients to integrate solar PV and battery systems that reduce exposure to both energy and network price risk, while improving ESG performance and resilience.

Why Solar PV and Batteries Matter More as Network Costs Rise

As network and infrastructure costs increase, the value of each kilowatt-hour generated on your own roof rises, because it displaces not just wholesale energy but also part of the network and policy costs embedded in every unit you buy from the grid. Consumer guides suggest that a typical 4 kW domestic solar system can already cut annual electricity bills by several hundred pounds, with payback times improving as grid prices and charges rise.

Adding battery storage lets households store excess daytime solar and use it during evening peaks when grid electricity is most expensive, further reducing exposure to rising network costs and time-of-use differentials. As part of a broader shift towards a decentralised, flexible energy system, well-sited rooftop solar and batteries also help reduce strain on the very networks that are being upgraded.

Atlantic Renewables’ engineers can model your home’s consumption, solar potential and tariff options to size a PV-plus-battery system that makes the most of both current and future price structures.

Practical Steps for UK Households to Manage Rising Bills

Even though network-driven bill increases are largely outside household control, there are several practical steps to reduce overall energy costs and increase resilience:

• Improve efficiency: upgrading insulation, ventilation and heating controls remains the cheapest way to cut gas and electricity use before prices and charges are applied.
• Install solar PV: rooftop systems can now be installed at historically low prices per kilowatt, and falling hardware costs have shortened payback periods in many parts of the UK.
• Add battery storage: pairing solar with a battery maximises self-consumption and enables smart-tariff strategies such as off-peak charging and peak-time discharge.

Atlantic Renewables can guide you through each of these steps where they involve solar PV and battery storage, ensuring your investment is optimised for the coming decade of grid upgrades and evolving tariffs.

Get in touch

If you are concerned about higher energy bills as the £28 billion grid upgrade proceeds and want to use solar PV and battery storage to take control of your costs, please get in touch with Atlantic Renewables and our team of experts will be happy to help. Call us on 0161 207 4044 to start taking advantage of your new solar system today.