From the harbour at Chichester to the old streets of Rye, Sussex is one of the sunniest corners of the country, and its homeowners are increasingly putting that daylight to work. After the Ofgem price cap rose again in July 2026, solar has become one of the clearest ways for Sussex households to take the sting out of their energy bills.
This is your complete guide to going solar in East and West Sussex: what it costs, what you can save, the local planning points to know, and how to choose an installer you can trust. It comes from Cre8 Zero, an MCS-certified solar, battery and EV charging installer based in Brighton, right in the heart of the county it serves.
The Sussex advantage: why the South Coast suits solar
Let us clear up a common myth first. Solar panels do not need heat, they need daylight, and the Sussex coast has plenty of it. This stretch of the South Coast enjoys some of the highest levels of solar irradiance in the UK, meaning panels here generate strongly across the year, including on bright but cool days.
That advantage runs the length of the county, from the West Sussex plain around Chichester and Worthing to the East Sussex coast at Eastbourne, Hastings and Bexhill. Inland towns like Crawley, Haywards Heath, Burgess Hill and Crowborough benefit too, often with larger roofs and less shading than dense coastal terraces.
Key takeaway: Sussex is one of the better places in Britain for solar, so a well-designed system here works hard for its owner.
How much do solar panels cost in Sussex in 2026?
Costs depend on your roof, the size of the system and whether you add a battery, so treat these as indicative ranges rather than fixed quotes.
- 3kW system (smaller home, 6 to 8 panels): roughly £5,000 to £6,500
- 4kW system (typical three or four-bedroom home): roughly £6,000 to £8,500
- 6kW system (larger home or higher usage): roughly £8,500 to £12,000
- Battery storage: typically an additional £3,000 to £6,000 or more
These reflect UK market prices in 2026 for supply and installation by an MCS-certified company. Larger rural homes across the Weald or the Downs, with high usage and roof space, sometimes justify bigger systems where the cost per unit of capacity falls. A free survey is the only way to get an accurate figure for your home.
The 0% VAT window is worth using now
There is a genuine, time-limited saving in place. Solar panels and battery storage installed on homes in Great Britain carry 0% VAT, and that relief is scheduled to run until 31 March 2027, after which it is expected to rise to at least 5%.
Your installer applies the relief automatically on the invoice, with no forms to complete. On a typical Sussex install that is worth hundreds of pounds, so 2026 is a sensible year to act while it lasts. Eligibility can vary by property type, which we confirm at survey, and a qualified adviser can help if your situation is unusual.
What could you save?
Savings come from two places: using your own solar electricity instead of buying from the grid, and selling your surplus back through the Smart Export Guarantee.
A well-sited 4kW system in Sussex can generate in the region of 3,400 to 4,000 units of electricity a year. As an indicative guide, many households save between £400 and £900 a year, and that figure grows as grid prices rise. With the cap higher again from July 2026, the electricity you generate and use yourself is worth more than it was.
Households at home during the day, or with a battery, tend to see the strongest returns because they use more of what they generate rather than exporting it cheaply.
Getting paid to export: the Smart Export Guarantee
The Smart Export Guarantee, or SEG, requires larger energy suppliers (those with 150,000 or more domestic customers) to pay you for the surplus electricity your system exports.
Worth knowing:
- Rates in 2026 vary widely, from around 1p per unit up to 30p or more per unit on the best battery-linked tariffs. Solid flat-rate options sit in the region of 12p to 16.5p per unit.
- Your export tariff is separate from your import supplier, so you can buy and sell with different companies.
- You need an MCS-certified installation and a smart meter to take part.
For a 4kW system without a battery, SEG income often lands in the region of £150 to £300 a year. Add a battery and a time-of-use tariff, and you can store power and export it when it pays the most.
Key takeaway: the SEG turns spare solar into income, but only with an MCS install and a smart meter.
Should you add a battery?
A battery is optional, but for many Sussex homes it strengthens the case. It stores solar generated during the day so you can use it in the evening, instead of buying expensive grid power at peak times.
Batteries also carry 0% VAT until 31 March 2027 and pair well with time-of-use export tariffs. For homes that sit empty during working hours, a battery can be the difference between using a small share of your solar and using most of it. Our team will only recommend one where the numbers genuinely stack up for your usage, and you can read more on our battery storage page.
Want to know what your Sussex roof could do? Book a free energy assessment and we will design a system around your home and budget.
Planning permission and the South Downs National Park
Most home solar installations across Sussex fall under permitted development, so they do not need a planning application. There are sensible conditions on how far panels can project and where they sit on the roof.
Sussex does have significant protected landscape, though, so extra care is sometimes needed. The South Downs National Park runs right across the county, and there are numerous conservation areas in historic towns like Lewes, Arundel, Rye and central Chichester, along with many listed buildings. None of this rules solar out, but it can shape panel placement and occasionally require permission. We check the position for your specific property and handle any applications and notifications as part of our process.
Living in Brighton or Hove?
If your home is in the city itself, the picture has a few specifics of its own, from conservation areas to the shading of tightly packed terraces. We have written a dedicated companion guide covering exactly that, so take a look at our guide to solar panels in Brighton & Hove for city-specific detail.
Choosing a local MCS installer in Sussex
Solar is a long-term investment, often lasting 25 years or more, so aftercare counts. A local, MCS-certified installer can return quickly if your system ever needs attention, rather than a national outfit that has moved on to the next region.
MCS certification is not just a badge. It is required for both the Smart Export Guarantee and the 0% VAT relief, so choosing a certified installer protects your income and your saving. Before you commit, check that your installer:
- Is MCS-certified, required for the SEG and the 0% VAT relief
- Uses qualified, registered electricians
- Offers a product warranty and an insurance-backed workmanship warranty
- Provides a clear, itemised quote with no vague extras
- Has genuine local reviews you can read for yourself
At Cre8 Zero, every installation is MCS-certified and carried out by fully qualified electricians, backed by an insurance-backed workmanship warranty and supported by our 5-star ratings on Trustpilot and Google. As a Brighton-based company, Sussex is our home patch.
Towns we serve across Sussex
We install across the whole county, in both East and West Sussex, including:
- West Sussex: Crawley, Haywards Heath, Burgess Hill, Worthing, Chichester, Bognor Regis, Horsham, Littlehampton and Shoreham
- East Sussex: Eastbourne, Hastings, Bexhill, Newhaven, Crowborough, Lewes, Seaford and Uckfield
If your town is not listed, it is still worth asking, as our coverage extends across the surrounding area and into Brighton & Hove, Kent, Surrey and Hampshire. You can also explore our solar panels and inverters options to see what a system might include.
Frequently asked questions
How much do solar panels cost in Sussex in 2026? A typical 4kW home system in Sussex costs roughly £6,000 to £8,500, with smaller systems from around £5,000 and larger 6kW systems up to about £12,000. Battery storage adds roughly £3,000 to £6,000. All figures are indicative, and a free survey gives an exact price.
Do solar panels work well in Sussex? Yes. Sussex sits on the South Coast and enjoys some of the highest solar irradiance in the UK. Because panels run on daylight rather than heat, they generate reliably through the year, including on bright but cool days.
Is there still 0% VAT on solar panels in 2026? Yes. Solar panels and battery storage installed on homes in Great Britain carry 0% VAT until 31 March 2027, after which the rate is expected to rise to at least 5%. Installers apply the relief automatically.
Do I need planning permission for solar panels in Sussex? Most home installations fall under permitted development and do not need permission. However, the South Downs National Park, conservation areas and listed buildings may require it, so it is worth checking. We confirm the position for your property before any work begins.
Which Sussex towns does Cre8 Zero cover? Cre8 Zero installs across East and West Sussex, including Crawley, Haywards Heath, Burgess Hill, Worthing, Chichester, Bognor Regis, Eastbourne, Hastings, Bexhill, Newhaven and Crowborough, as well as Brighton & Hove and the wider South East.
Ready to go solar in Sussex?
The case for solar in Sussex in 2026 is as strong as anywhere in the country: high irradiance, rising grid prices, 0% VAT while it lasts, and a real income from exporting surplus power. The best first step is a proper look at your own roof.
Let our local, MCS-certified team show you exactly what your home could generate and save. Book your free energy assessment online, call us on (020) 3038 4595, or email enquiries@cre8zero.com. We will give you clear answers and an honest quote.
