Sussex
Solar panels in Southwick, designed on a free call.
About 7,290 kWh a year from 12 panels in Southwick, £6,360 installed, with your system designed on a free 30-minute video call.
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- Free 30-minute video design call
- Priced before anyone visits
- Installed by our MCS-certified, fully insured teams
Sunlight in Southwick, in numbers
Southwick's best month is July, at 145.7 kWh per kWp; December manages 38.6. Over the year that comes to 1,146 kWh per kWp, level with our Sussex county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 41.3 |
| February | 58.4 |
| March | 98.3 |
| April | 131 |
| May | 138 |
| June | 144 |
| July | 146 |
| August | 127 |
| September | 106 |
| October | 72 |
| November | 46.4 |
| December | 38.6 |
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 1,146, Southwick is 24% above it.
How Southwick compares
Small towns rarely get published solar figures, so here are the numbers for Southwick. It is one of 33 Sussex towns we track, and it ranks 12th of 33 for solar yield, a town of 12,210 people in the House of Commons Library settlement data. PVGIS gives its roofs 1,146 kWh per kWp a year, 3.14 peak sun hours a day averaged across the seasons, and the standard 12 panel model turns that into £1,009 of year one benefit, £247 of it from your own generation and £762 from export at 12p.
Treat these as calibration rather than a quote. The calculator below runs the same model, opened on Southwick's own yield, and prices a 12 panel system at £6,360 installed before any battery. Your free design call reworks every number for your actual roof, its shading and your usage.
Any planning application in Southwick sits with Adur, and its official House of Commons Library settlement class is small town.
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 is modelled from PVGIS satellite data for Southwick's own coordinates (50.83704, -0.23417), using the same 26.32p/kWh import value and £1,000 per kWp installed pricing as every Clearline estimate; the methodology is on our help page.
UK Power Networks and your Southwick connection
UK Power Networks owns and runs the local electricity network in Southwick, as part of its South East England licence area.
What decides the paperwork is the inverter and battery output, not the number of panels. Up to 3.68kW per phase, a system follows G98: UK Power Networks is notified within 28 days of commissioning and nothing has to be approved first.
Above that, G99 means applying before the work is booked. 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.
Sources: NESO DNO licence areas (3 May 2024); Ofgem, Distributed Generation Standards Direction guidance, checked 27 September 2026. G98 vs G99, explained.
Heat pumps and EV charging in Southwick
A heat pump in Southwick
In December, the darkest month here, 12 panels in Southwick make about 250 kWh. That is when a heat pump runs hardest, so its running cost in Southwick comes down to the tariff and the flow temperature rather than the roof.
In England, the Boiler Upgrade Scheme pays £7,500 towards an air source or ground source heat pump and £2,500 towards an air-to-air one, with £1,500 more until March 2027 for homes heated by oil or LPG with no mains gas (gov.uk, checked 28 September 2026).
Charging an EV in Southwick
Southwick's July output, about 930 kWh from 12 panels, is several times the 70 kWh or so a typical home uses in daylight that month on our calculator's settings. Daytime charging turns that surplus into miles.
If you rent, or own a flat, and have private off-street parking, the government chargepoint grant covers 75% of the cost, capped at £500 a socket, until 31 March 2027 (gov.uk, checked 28 September 2026). The calculator above prices a 7.4kW smart charger from £1,100 installed.
Installed prices, the same in every town
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Southwick
The same sourced benchmarks apply in Southwick as everywhere we cover: honest repair pricing and what a service should include.
Southwick solar questions
How much electricity do solar panels make in Southwick?
About 7,290 kWh a year from 12 panels (6.36 kWp), on PVGIS satellite data for Southwick: 1,146 kWh per kWp, or 3.14 peak sun hours a day on average. July is the strongest month, at about 930 kWh.
Is solar more expensive in Southwick?
Prices on this site are the same everywhere: £1,000 per kWp installed, which puts a 12-panel system at £6,360 in Southwick, and a Duracell Dura16 installed with solar at £4,450 on top. The local part is generation, about 7,290 kWh a year here, which is what drives payback.
Which DNO covers Southwick, and what does it need from me?
UK Power Networks covers Southwick. 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 could I earn from exporting in Southwick?
On the 12p export scenario, a 12-panel system in Southwick sends about 6,352 kWh a year to the grid, worth around £762. The export rates table compares what each supplier pays.
How much solar does Southwick get in December?
December is the low point: about 250 kWh from a 12-panel system in Southwick, on PVGIS data, rising to 930 kWh in July. From November to February the same system makes about 1,170 kWh in total, which is why a battery charged off-peak does more of the work in winter.
How Southwick compares with its neighbours
Same satellite dataset, same assumptions, so the differences are real geography rather than modelling noise.
| Town | kWh per kWp a year | vs Southwick |
|---|---|---|
| Southwick | 1,146 | this town |
| Shoreham-by-Sea | 1,145 | −1 kWh |
| Lancing and Sompting | 1,144 | −2 kWh |
| Brighton and Hove | 1,159 | +13 kWh |
| Worthing | 1,143 | −3 kWh |
| Hassocks and Hurstpierpoint | 1,134 | −12 kWh |
| Burgess Hill | 1,113 | −33 kWh |
Same PVGIS v5.2 query for every town. Small differences are within year-to-year weather; more than about 30 kWh per kWp apart is geography.
Also for Southwick: Solar panels in Southwick from OVO Solar & Battery
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Further reading for Southwick
Sourced, dated and written by us. The same ground we cover on your free call.
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 →Which battery size band does your home fall into?
Where UK homes actually land, why oversizing costs you, and what shifts the band.
Read the guide →How time of use charging windows actually work
How a cheap overnight window is metered and billed, and what a battery does inside it.
Read the guide →What MCS certification actually buys you on a heat pump job
The gate on the £7,500 grant, the design standard behind your running costs, and the noise sign-off.
Read the guide →Choosing a tariff when you have solar, a battery and an EV
Solar, battery and EV want different tariffs. How to work out which one to protect.
Read the guide →NAPIT, NICEIC and competent person schemes: who tells building control about your solar
Solar work is notifiable. A competent person scheme means your installation team notifies, not you.
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.