Are Solar Panels Worth It in Sussex? (Honest Answer from a Local Installer)
We’ve installed solar panels on over 2,000 homes and businesses across Sussex since 2011. We’ve fitted them to terraced houses in Brighton, farmhouses in the South Downs, bungalows in Worthing, and commercial warehouses in Crawley. And the question we’re asked more than any other — before a quote, before a survey, before anything — is always the same:“Is it actually worth it?”
It’s a fair question. Solar panels aren’t cheap. A typical system with battery storage costs upwards of £10,000. That deserves an honest, straight answer — not a sales pitch. So here it is, based on our own installation data and 14 years of working in this county.Why Sussex Is One of the Best Places in the UK for Solar
Let’s start with the geography, because it matters more than most people realise. Sussex is among the sunniest parts of the United Kingdom. Lewes, in East Sussex, receives around 1,357 kilowatt-hours of solar energy per square metre every year — that’s 24% higher than the UK national average. West Sussex fares similarly well, with coastal towns like Bognor Regis and Worthing recording up to 1,920 sunshine hours per year, and peak summer days that can exceed nine hours of useful generation. This isn’t just a pleasant statistic. More sunlight means more electricity generated, which means higher savings and a shorter payback period compared to a homeowner in, say, Manchester or Edinburgh with the exact same system. Over 45,000 Sussex households already have solar panels installed with an MCS certificate — that’s around 6.2% of all homes in East and West Sussex, and higher than the UK average. These are your neighbours. Many of them are generating a significant portion of their own electricity and earning money back through the Smart Export Guarantee. They decided it was worth it. Here’s why they’re right.What Does a Solar System Cost in Sussex?
There’s no single price for solar — it depends on your roof, your energy usage, and the system size that’s right for you. But based on installations we’ve completed across Sussex in 2025 and 2026, here are typical figures: Domestic solar only (no battery):- 10 panels (4–4.5kWp system) — typically £6,000–£8,000 installed
- Includes scaffolding, all equipment, grid connection, and monitoring
- 10 panels + 5kWh battery — typically £10,000–£12,000 installed
- 10 panels + 10kWh battery — typically £13,000–£16,000 installed
How Much Can You Actually Save?
This is the real question, and the answer varies — but it’s rarely disappointing. A typical 4kWp solar system on a south-facing Sussex roof will generate around 4,000 kilowatt-hours of electricity per year. Given that the average UK home uses roughly 3,500kWh annually, a well-designed system can meet a large portion of your energy needs. In practical terms, this is what our Sussex customers typically report: Without battery storage: The system offsets your daytime energy use while the sun shines. You’ll still draw from the grid in the evenings. Savings typically range from £400–£700 per year, depending on how much of the solar generation you actually use. With battery storage: The battery captures the excess generation during the day and releases it in the evening, so you’re using your own electricity around the clock. Savings jump considerably, typically reaching £800–£1,200 per year for a household with a 5–10kWh battery. With an Octopus Intelligent or similar smart tariff: As an Octopus Energy Trusted Partner, we can also set you up with tariffs that pay you to export surplus electricity (the Smart Export Guarantee), and charge your battery cheaply overnight. Some customers effectively eliminate their electricity bills during summer months entirely.What’s the Payback Period for Sussex Homes?
A question we get asked on every survey. Based on our installations, the average payback period for a Sussex solar system is:- Solar only: 8–12 years
- Solar + battery: 7–10 years (because you save more of what you generate)
- Solar + battery + smart tariff: can fall below 7 years for homes with higher energy usage
Is There Any Way to Get Solar for Free in Sussex?
Possibly — if your household is eligible. Through our sister company, ECO4 South, we help Sussex households access the government’s ECO4 scheme, which provides fully funded energy efficiency upgrades — including solar panels — to eligible properties. ECO4 is aimed at households receiving certain means-tested benefits, including:- Universal Credit
- Income-based Jobseeker’s Allowance
- Child Tax Credit
- Pension Credit (Guarantee Credit)
- Income Support
What About Sussex’s Coastal Weather and Cloudy Days? This is probably the most common concern we hear — “does solar actually work when it’s cloudy?” Yes. Modern solar panels generate electricity in overcast conditions, not just direct sunshine. They respond to daylight, not just heat. Sussex’s coastal climate — while occasionally grey — still delivers far more usable solar irradiance than most of the UK. Even in January, a well-designed system will produce a meaningful amount of electricity. In summer, a 10-panel system in Brighton or Worthing can generate enough electricity in a single day to cover a family’s entire usage. In winter, generation drops, but most customers with battery storage find they’re still significantly reducing their grid dependence year-round. We’ve installed solar on north-facing roofs, flat roofs, pitched roofs, and even listed buildings in conservation areas across Sussex. Our in-house design team optimises every system for the specific orientation and shading of your property — there’s rarely a roof we can’t work with.
Questions We Get Asked Every Week
“Will I need planning permission?” For most domestic installations in Sussex, no. Solar panels on residential properties are permitted development. The exceptions are listed buildings, certain conservation areas, and ground-mounted systems. If your property does require planning permission, we handle the application in-house. “What happens if I move house? Solar panels add value and are a strong selling point, particularly as energy costs remain high. Your installation comes with full MCS certification documentation, which is exactly what solicitors and surveyors need during a property sale. “What maintenance do solar panels need?” Very little. We fit bird protection netting as standard to every installation, which prevents the most common cause of damage. Panels are self-cleaning in rain, and we recommend a professional clean every two to three years. We offer a full aftercare and maintenance package for peace of mind. “Do you install battery storage on its own?” Yes — if you already have solar panels (including older feed-in tariff systems), we can retrofit battery storage to your existing installation, allowing you to start storing and using more of your own generation.The Straight Answer Is solar worth it in Sussex? Yes — and more so here than almost anywhere else in the UK. The combination of high local solar irradiance, rising energy costs, a 0% VAT rate on installations, Smart Export Guarantee payments, and the potential for ECO4 grant funding makes Sussex one of the most favourable places in the country to go solar in 2026. We won’t pretend it’s the right decision for every household — if your roof is heavily shaded, in very poor condition, or you’re planning to move within a year, we’ll tell you that honestly on survey. But for the vast majority of the homeowners we meet across Brighton, Worthing, Crawley, Horsham, Eastbourne, Hastings, Chichester, and everywhere in between — solar is one of the best financial decisions they’ve made.
