One solar panel system is being installed every three minutes in the UK right now. That is roughly 480 a day, or 14,400 a month, a rate not seen since the early days of the Feed-in Tariff in 2011. The driver, as reported by The Times, is not a government scheme or a price drop. It is the Iran-Israel conflict and the fear that global energy supplies could be disrupted at any moment.
Why the Iran conflict matters for your roof
Households are not waiting for policy. They are acting on the simple arithmetic that a 4 kW solar array, roughly 10-12 panels, can cut an annual electricity bill by 40-60%, or about £450-£700 a year at current price cap levels. The Energy Saving Trust calculates that a south-facing system in Manchester generates around 3,400 kWh annually, worth roughly £680 at the October 2024 price cap of 24.5p per kWh.
But the maths has shifted because of geopolitics. The Strait of Hormuz, through which 20% of the world’s oil passes, is within missile range of Iran. UK wholesale electricity prices are already 15% higher than they were a year ago, according to Ofgem data. Every spike in wholesale prices improves the payback period for solar. The catch is that installation costs have also risen, a typical system now costs £5,000-£8,000, up from £4,000-£6,000 pre-pandemic, driven by higher panel and inverter prices.
Who is installing, and who is missing out
The surge is concentrated in owner-occupied homes with south-facing roofs. Flats and terraced houses with limited roof space or complex tenures are largely excluded. The government’s Smart Export Guarantee pays 5-15p per kWh for exported electricity, but the rate is set by suppliers and varies wildly. Octopus Energy pays 15p; some smaller suppliers pay as little as 3p. That difference alone can be worth £60-£120 a year for a typical household.
Renters and social housing tenants have no direct route to solar unless their landlord installs it. The Social Housing Decarbonisation Fund has allocated £1.8 billion over 10 years, but uptake remains slow. For the majority of UK homeowners, the decision now hinges on whether they can afford the upfront cost and whether they plan to stay in the property for at least 8-10 years.
EPC impact and resale value
Solar panels can lift an EPC rating by one or two bands. A D-rated home with a 4 kW system and battery storage can reach a C or even a B. That matters because from 2025, landlords will need a minimum EPC rating of C for new tenancies. For homeowners, the uplift adds an estimated 5-10% to property value, according to estate agent data cited by the Energy Saving Trust. A £300,000 home with solar and battery could sell for £315,000-£330,000, enough to cover the installation cost.
But do not assume every roof is suitable. Shading from trees or neighbouring buildings can slash generation by 30-50%. East-west roofs generate about 20% less than south-facing ones. The Microgeneration Certification Scheme (MCS) database now lists over 4,000 accredited installers, but lead times have stretched to 8-12 weeks in some regions. Homeowners should get at least three quotes and ask for a shading analysis before signing anything.
What this means for your next move
The window for cheap solar is not closing, it is narrowing. Panel prices have stabilised after a 30% drop in 2023, but tariffs on Chinese imports could push them up again. The government’s zero-rate VAT on solar installations (suspended until March 2027) saves roughly £200-£400 on a typical system. Households on standard variable tariffs can apply through the Energy Company Obligation (ECO4) scheme if they receive certain benefits, but eligibility is tight.
If you are considering solar, start now. Check your roof orientation on Google Maps or a solar survey app. Get MCS-accredited quotes. Compare SEG rates from suppliers. And factor in a battery, a 5 kWh battery costs £1,500-£2,500 but can double your self-consumption rate, cutting bills by another £150-£250 a year. The Iran conflict may fade from the headlines, but the logic of generating your own electricity is not going anywhere.
Frequently Asked Questions
For a typical 4 kW system costing £6,000-£8,000, the payback period is 8-12 years depending on location, roof orientation, and how much of the generated electricity you use directly. Adding battery storage extends the payback by 2-4 years but increases long-term savings.
Yes, but generation drops by about 20% for east-west roofs and 30% for north-facing ones. A 4 kW system on an east-west roof will generate around 2,700 kWh annually instead of 3,400 kWh. The payback period extends by 2-3 years but can still be worthwhile.
