The Campaign to Protect Rural England (CPRE) gathered an expert panel last week to debate the future of solar energy in the UK, and the room was split. The question at its core: should we cover fields with panels, or push harder for rooftop installations? For homeowners, the answer matters more than the politics.
As reported by CPRE, the charity’s panel explored how to balance the UK’s renewable energy targets with the need to protect green spaces. The outcome is not yet policy, but the direction of travel is clear: ministers are listening to both sides.
Why this debate affects your energy bill
About 1.5 million UK homes now have solar panels, according to the Energy Saving Trust. But the vast majority of new solar capacity comes from large ground-mounted farms, many on agricultural land. CPRE’s concern is that unchecked solar sprawl could damage landscapes and biodiversity. The counter-argument, from developers and government, is that utility-scale solar is cheaper per kilowatt-hour and helps meet net-zero targets faster.
For a homeowner, the tension creates an opportunity. If planning rules tighten for ground-mount solar, the government may need to incentivise rooftop installations to keep deployment on track. That could mean higher export tariffs, lower VAT on installations (already at 0% until 2027), or streamlined planning for home arrays. A typical 3.5 kWp system costs between £5,000 and £8,000 and can save £300–£500 a year on electricity bills, depending on usage and orientation.
Who qualifies, and who doesn’t
Not every home is a good candidate for solar. The Energy Saving Trust recommends a roof facing within 90 degrees of south, with little shading, and a structural condition that can hold the weight. But even north-facing roofs can work with modern panels, particularly if you add a battery to store midday generation for evening use.
EPC impact is significant. A typical installation can lift a D-rated home to a C, and a C to a B. That matters because from 2025, landlords in England will need a minimum EPC rating of C for new tenancies, solar is one of the few single upgrades that can shift a rating by two bands.
The catch is grid capacity. In some areas, especially rural ones, the local distribution network is full. Ofgem’s new ‘first ready, first connected’ queue, effective from November 2024, is built to prioritise projects that are genuinely ready to connect. For homeowners, this could mean faster approvals for small systems, but only if the local substation has headroom.
What it costs a typical 3-bed semi
Installation costs have fallen sharply. A 4 kW system with a 5 kWh battery now costs around £9,000–£12,000 installed, down from £15,000 in 2019. The Smart Export Guarantee (SEG) pays 5–15p per kWh for exported electricity, though rates vary by supplier. Octopus Energy’s Outgoing Fixed tariff pays 15p/kWh, one of the best on the market.
But the real savings come from self-consumption. A household using 4,000 kWh a year, with a 4 kW system and battery, can cover 60–80% of its own usage. At current price cap rates of 24.5p/kWh, that’s a saving of £600–£800 annually. Payback periods now run 8–12 years, down from 15 years a decade ago.
Yet the CPRE debate highlights a blind spot: the UK still has no national strategy for rooftop solar. The government’s Solar Taskforce, launched in 2023, has focused on large-scale deployment. A shift toward rooftop targets, say, a million more homes by 2030, would require changes to permitted development rights and stronger enforcement of new-build solar requirements.
What you can do now
Check your roof’s suitability using the Energy Saving Trust’s solar calculator. If you’re a homeowner, get quotes from at least three MCS-certified installers. Apply for a home battery through the ECO4 scheme if you’re on a low income or receive certain benefits, grants can cover full installation. For landlords, solar plus battery is one of the few upgrades that can lift an EPC from E to C in a single project.
If you’re planning a new build or major renovation, specify solar-ready roofing and a battery-ready inverter. The cost of adding panels later is roughly double the cost of including them at build stage. And if you live in a conservation area or listed building, check local planning rules early, some councils are more flexible than others.
The CPRE panel may not have settled the solar land-use debate, but it has put rooftop solar back on the agenda. For UK homeowners, that is good news. The choice between fields and roofs is not binary, but the smart money is on the roof.
Frequently Asked Questions
Not directly, but if policy shifts toward rooftop solar due to landscape concerns, the government may introduce new incentives such as higher export tariffs or streamlined planning rules. Prices are already falling, a 4 kW system now costs £5,000–£8,000 before battery.
Typically yes. Solar panels can lift a property by up to two EPC bands. For a D-rated home, adding a 4 kW system with battery often achieves a C rating, which is the minimum for new tenancies from 2025. But check with an accredited assessor, other measures like loft insulation may also be needed.
