More than 200,000 households installed solar panels in 2024, a record that shatters the previous high set in 2023. The data, published by the Department for Energy Security and Net Zero, shows domestic installations now account for over 60% of all new solar capacity in the UK. This is not a story about giant solar farms in the desert. This is about semi-detached houses in Milton Keynes, terraces in Manchester, and bungalows in Cornwall.
The boom is happening despite, or perhaps because of, a cost-of-living crisis that has pushed energy bills to historic highs. As reported by Public Sector Executive, the surge is driven by households seeking to cut bills and reduce carbon footprints. But the real question for homeowners is: will this boom last, and should you join it now?
What the record means for your energy bill
A typical 4 kW solar panel system costs between £5,000 and £7,000 installed, according to the Energy Saving Trust. For a household using 3,500 kWh of electricity per year, that system can generate roughly 3,400 kWh annually, covering nearly all daytime usage. At current price cap rates of 24.5p per kWh, that translates to savings of around £400–£600 a year on bills, depending on how much energy you use when the sun shines.
But the headline savings understate the real benefit. The Smart Export Guarantee (SEG) pays households for surplus electricity exported to the grid. Rates vary by supplier, Octopus Energy offers 15p per kWh, while others pay as little as 4p. A household that exports half its generation could earn an extra £100–£150 a year. Combined with savings, the total benefit can reach £700 annually.
Yet the payback period remains a sticking point. At current installation costs, a typical system pays for itself in 8–12 years. With solar panels lasting 25–30 years, that leaves 13–18 years of near-free electricity. The catch is that many households move house every 10–15 years, meaning the payback may not fully materialise before you sell. However, EPC improvements, solar panels can lift a property from band D to band C, add resale value, as buyers increasingly prioritise energy efficiency.
Grid connection delays are easing, but batteries are the real big improvement
One of the biggest barriers to solar adoption has been grid connection delays. Until recently, households in some regions faced waits of up to six months for a grid connection approval. New data from Ofgem shows average connection times have fallen from 18 weeks in 2023 to 12 weeks in 2024, thanks to streamlined application processes and increased network capacity.
But the grid isn’t the only bottleneck. The real shift in 2024 has been the rise of battery storage. A 5 kWh battery, enough to store the surplus from a typical afternoon’s generation, costs around £2,000–£3,000 installed. With batteries, households can use solar power in the evening, when electricity is most expensive, effectively doubling the savings. Octopus Energy’s ‘Flux’ tariff, which pays higher rates for midday exports and charges lower rates for overnight imports, makes batteries even more attractive.
The Energy Saving Trust estimates that a solar-plus-battery system can cut a household’s grid electricity use by up to 80%, compared to 40% for solar alone. That pushes the payback period down to 7–10 years for a combined system. But the upfront cost, typically £8,000–£10,000, remains a barrier for many.
Who qualifies for grants, and who doesn’t
The government’s main support scheme, the Boiler Upgrade Scheme, does not cover solar panels, it’s for heat pumps and biomass. However, the Smart Export Guarantee remains in place, and the Energy Company Obligation (ECO4) scheme provides free or subsidised solar panels for low-income households in certain circumstances. Eligibility is limited to those receiving qualifying benefits and living in homes with an EPC rating of D or below.
For most households, the only financial incentive is the 0% VAT rate on solar panels and batteries, introduced in 2022 and extended to 2027. That saves around £1,000 on a typical £7,000 installation. But unlike heat pumps, solar panels receive no upfront grant under current government programmes. The Labour government has promised a ‘Local Power Plan’ with community solar projects, but details on household-level support remain vague.
What this misses is the missed opportunity for renters. As of 2024, only 1% of rented homes have solar panels, compared to 10% of owner-occupied homes. The government’s proposed ‘Minimum Energy Efficiency Standard’ for rented properties, requiring an EPC rating of C by 2030, could force landlords to install solar, but enforcement has been repeatedly delayed. For now, tenants are largely locked out of the solar boom.
The record installation figures are a vote of confidence from British households. But the boom is unevenly distributed, skewed toward homeowners with capital and south-facing roofs. For those who can afford it, the economics are increasingly compelling. For those who can’t, the promise of cheaper, cleaner electricity remains just out of reach.
Households considering solar should check their roof orientation, shading, and local SEG rates before buying. For most, a 4 kW system with a 5 kWh battery offers the best balance of cost and savings. Applications for grid connection should be submitted early, even with faster approvals, demand is high. The next deadline for the 0% VAT rate is 31 March 2027. Don’t wait until then to decide.
Frequently Asked Questions
A typical 4 kW system costs between £5,000 and £7,000 installed. Adding a 5 kWh battery increases the total to £8,000–£10,000. Prices have fallen by about 20% since 2022, but vary by installer and roof complexity.
In most cases, no. Solar panels are considered 'permitted development' for homes, provided they don't protrude more than 200mm from the roof and are not on a listed building or in a conservation area. Always check with your local planning authority before installing.
