Sussex, England
Solar and batteries in Sussex, sized to your roof.
About 7,260 kWh a year from 12 panels in Sussex, £6,360 installed, with your system designed on a free 30-minute video call.
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or call 07782 219224
- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Sunlight in Sussex, in numbers
Sussex's best month is July, at 141.1 kWh per kWp; December manages 40.2. Over the year that comes to 1,141 kWh per kWp, 23% above the mean of our 85 county estimates.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 43.1 |
| February | 59.3 |
| March | 99.2 |
| April | 131 |
| May | 136 |
| June | 140 |
| July | 141 |
| August | 124 |
| September | 106 |
| October | 72.2 |
| November | 49.9 |
| December | 40.2 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Our GB average is 925 kWh per kWp a year, the mean of the 85 county PVGIS estimates we publish; at 1,141, Sussex is 23% above it.
How Sussex compares
Sussex ranks 1st of the 85 counties we track for solar yield, which puts export income near the top of the country. On the 12p scenario a 12 panel system here sends about 6,320 kWh to the grid a year on top of the £247 it saves you directly, so oversizing the array is usually the right call.
These are county-level starting numbers. A town page gives the figure for its own centroid, and your design call replaces both with your roof, its shading and your bills.
The charger is in the installed price but left out of payback: charging savings depend on your mileage and tariff, which the design call models properly.
Your real roof and usage, worked through on a free 30-minute video call. Use the full form or leave three details below.
Price this for your roof
Three details. We call or text within one working day to book your free 30-minute design call, on video or by phone if you prefer.
Generation from PVGIS v5.2 (European Commission JRC, SARAH3), retrieved August 2026 for a representative point in Sussex (50.9471, -0.1414), assuming 1 kWp, 14% system loss, 35 degree pitch, due south. Import valued at 26.32p/kWh (Ofgem price cap average, Oct to Dec 2026); off-peak charging at 8.5p/kWh where used (a supplier's published off-peak rate, checked September 2026); export at the scenario you pick, from the dated tariff table. Prices are installed pricing, August 2026, standard installations; 530W LONGi panels at £1,000 per kWp. Estimates for illustration, not a quote: your free design call prices your actual roof.
UK Power Networks and your Sussex connection
UK Power Networks is the distribution network operator (DNO) for Sussex across most of the county, running its South East England licence area.
G98 is the simple route. If the inverter, plus any battery, stays at or under 3.68kW per phase, UK Power Networks only has to be told within 28 days after the system is commissioned.
Larger systems go through G99 instead, applied for before installation. On timing: Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator.
Parts of Sussex are on a different network: some of its towns are served by SSEN. Each town page names its own operator, worked out from that town's own location.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Adding a heat pump or an EV charger in Sussex
A heat pump in Sussex
In December, the darkest month here, 12 panels in Sussex make about 260 kWh. That is when a heat pump runs hardest, so its running cost in Sussex comes down to the tariff and the flow temperature rather than the roof.
The Boiler Upgrade Scheme, open in England and Wales, takes £7,500 off an air source or ground source heat pump, or £2,500 off an air-to-air unit. Homes on oil or LPG with no mains gas get £1,500 more until March 2027 (gov.uk, checked 28 September 2026).
Charging an EV in Sussex
Summer is where a car earns its place. In July, 12 panels in Sussex make about 900 kWh, against roughly 70 kWh a typical home uses in daylight that month on our calculator's typical-use settings, so there is surplus a smart charger can put into the car instead of exporting it.
The calculator above includes a 7.4kW smart charger from £1,100 installed. Renters and flat owners with off-street parking can claim 75% of a chargepoint's cost, up to £500 per socket, until 31 March 2027 (gov.uk, checked 28 September 2026).
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Sussex solar questions
How much electricity do solar panels make in Sussex?
About 7,260 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Sussex: 1,141 kWh per kWp, or 3.13 peak sun hours a day on average. July is the strongest month, at about 900 kWh.
What does a typical solar system cost in Sussex?
Solar is priced at £1,000 per kWp installed wherever you live, so a 12-panel, 6.36 kWp system costs £6,360 in Sussex, exactly as it would anywhere else, before any battery. Location changes what the system makes, not what it costs: here that is about 7,260 kWh a year. The final figure comes from your roof on the design call.
Which DNO covers Sussex, and what does it need from me?
UK Power Networks covers the centre of Sussex. A home system of up to 3.68kW per phase is notified to UK Power Networks within 28 days of commissioning under G98, and nothing waits on approval. Larger outputs need a G99 application before work starts. Ofgem's guaranteed standard for a low voltage generation connection quotation is 45 working days, with £80 paid for each working day late, and it binds UK Power Networks as it does every network operator.
What happens to the solar I do not use in Sussex?
Around £758 a year at 12p per kWh, for the roughly 6,320 kWh a 12-panel system in Sussex exports with typical use. Rates vary by supplier and some need their own tariff; the export rates table is dated and sourced.
How much solar does Sussex get in December?
December is the low point: about 260 kWh from a 12-panel system in Sussex, on PVGIS data, rising to 900 kWh in July. From November to February the same system makes about 1,220 kWh in total, which is why a battery charged off-peak does more of the work in winter.
Towns we cover in Sussex
33 Sussex towns have their own page, each with PVGIS figures, a network operator and a monthly curve for its own location.
Nearby in England
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Reading for Sussex homeowners
The same guidance we would talk through on your call, written down and sourced.
Single phase or three phase? The sixty-second check that decides your system size
One look at your fuse board sets the ceiling on how much solar you can connect.
Read the guide →Whole home backup or partial backup? The runtime arithmetic
Whole home backup sounds obvious until you do the runtime maths. Here is how to choose the right tier.
Read the guide →What it really costs to charge an EV at home versus in public
Home off-peak charging costs a fraction of the public price. The arithmetic, and the tariff it depends on.
Read the guide →Are heat pumps worth it? The real 2026 numbers
Electricity costs 3.3x gas per kWh. A heat pump is about 3x as efficient. The numbers nearly cancel out.
Read the guide →EV tariffs compared: the cheapest overnight windows
Overnight rates of 6.99p to 9p against a 26.32p capped average, compared.
Read the guide →HIES explained: what the badge actually protects, and when
What HIES protects: deposits up to 25 percent capped at 5,000 pounds, and your workmanship guarantee.
Read the guide →Get my free quote
Takes about two minutes. We call or text within one working day to book your free 30-minute video design call at a time that suits you. We design it around your roof and your numbers, and our MCS-certified, fully insured installation teams install it.