Essex
Solar panels in Southend-on-Sea, sized to your roof.
A 12-panel roof in Southend-on-Sea makes about 6,860 kWh a year and costs £6,360 installed; a free 30-minute video call sizes it to yours.
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Southend-on-Sea's solar year
Southend-on-Sea's best month is July, at 132.5 kWh per kWp; December manages 38.8. Over the year that comes to 1,079 kWh per kWp, 2% above our Essex county estimate.
Generation per kWp, month by month
Show the monthly figures
| Month | kWh/kWp |
|---|---|
| January | 39.6 |
| February | 55 |
| March | 90.6 |
| April | 122 |
| May | 130 |
| June | 130 |
| July | 133 |
| August | 118 |
| September | 103 |
| October | 69.6 |
| November | 49.7 |
| December | 38.8 |
Source: PVGIS v5.2 (European Commission JRC), SARAH3 database, 1 kWp, 14% system loss, 35 degree pitch, due south, checked September 2026.
Against Great Britain as a whole: Southend-on-Sea makes 1,079 kWh per kWp a year, and the mean of our 85 county PVGIS estimates (our GB average) is 925, so Southend-on-Sea is 17% above it.
How Southend-on-Sea compares
Southend-on-Sea is classed as a city in the House of Commons Library settlement data, home to 186,848 people. It is one of 46 Essex towns we track, and it ranks joint 11th of 46 for solar yield. Its 1,079 kWh per kWp a year works out at 2.96 peak sun hours a day, and running the standard 12 panel model here splits the return into £247 of savings from generation you use yourself and £711 of export income at 12p, with about 5,926 kWh a year going to the grid.
These are starting numbers, not a quote. The calculator below opens on Southend-on-Sea's own PVGIS figure; change the panels, the battery or the export rate and it reruns. The design call replaces every assumption with your roof and your bills.
Planning applications in Southend-on-Sea go to its own council, and the House of Commons Library classes it as a city.
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.
Modelled for Southend-on-Sea at 51.54941, 0.70363 on PVGIS data, with imports valued at 26.32p/kWh and solar at £1,000 per kWp installed. Sources and assumptions: help page.
Who runs the grid in Southend-on-Sea
Southend-on-Sea sits in UK Power Networks' East England licence area, so UK Power Networks is the network operator (DNO) any solar panels or battery here are registered with.
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.
Anything bigger is a G99 case and is applied for first. 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.
Adding a heat pump or an EV charger in Southend-on-Sea
A heat pump in Southend-on-Sea
A heat pump does most of its work from November to February. Over those four months, 12 panels in Southend-on-Sea make about 1,160 kWh, against 3,250 kWh from May to August, so winter heating runs mostly on grid electricity and the tariff matters more 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 Southend-on-Sea
A 12-panel roof in Southend-on-Sea makes about 840 kWh in July. A typical home uses around 70 kWh of that in daylight (the calculator's typical-use settings), which leaves most of the month's output for an EV or for export.
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.
The packages, priced before anyone visits
Every system is designed around your roof on the free call before anything is fitted.
Solar panel servicing and repair in Southend-on-Sea
Faults, servicing and ageing inverters follow the same economics in Southend-on-Sea as anywhere else, and the guides below price them plainly.
Southend-on-Sea solar questions
What does a solar panel system produce in Southend-on-Sea?
Each kWp of panels in Southend-on-Sea makes 1,079 kWh a year on PVGIS figures, so a typical 12-panel system produces around 6,860 kWh, from about 250 kWh in December up to 840 kWh in July.
What would 12 solar panels cost in Southend-on-Sea?
£6,360 for 12 panels (6.36 kWp), the same as in every other place we cover, because solar is priced at £1,000 per kWp installed rather than by area. A battery adds its own installed price on top. Where Southend-on-Sea differs is output: about 6,860 kWh a year from that system.
Would a system in Southend-on-Sea need approval from the network operator?
Southend-on-Sea is on UK Power Networks' network (East England licence area). Systems up to 3.68kW per phase of inverter output follow G98: UK Power Networks is notified within 28 days of commissioning, with no approval needed first. Anything larger needs a G99 application before installation. 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. Our G98 vs G99 guide explains both routes.
How much would export pay on a system in Southend-on-Sea?
It is exported. With typical use and no battery, about 5,926 kWh of the 6,860 kWh a 12-panel system makes in Southend-on-Sea goes to the grid, around £711 a year at 12p. A battery keeps more of it for the evening; the export rates table shows what suppliers pay.
Is solar worth it in Southend-on-Sea in winter?
It works, but the year is lopsided. 68% of a Southend-on-Sea roof's output lands between April and September; the four months from November to February give about 1,160 kWh on a 12-panel system. Payback is worked out on the whole year, not the winter.
How Southend-on-Sea 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 Southend-on-Sea |
|---|---|---|
| Southend-on-Sea | 1,079 | this town |
| Rochford | 1,088 | +9 kWh |
| Hockley and Hawkwell | 1,102 | +23 kWh |
| Rayleigh | 1,072 | −7 kWh |
| Thundersley and South Benfleet | 1,070 | −9 kWh |
| Canvey Island | 1,079 | level |
| Burnham-on-Crouch | 1,122 | +43 kWh |
Each row is a PVGIS v5.2 run at that town's centre with the same settings. Treat gaps of a few kWh as noise and gaps over about 30 kWh per kWp as real differences in sunshine.
Also for Southend-on-Sea: Solar panels in Southend-on-Sea from OVO Solar & Battery
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Answer a few questions about your roof and usage and see an instant solar and battery estimate. No email needed to see the result.
Further reading for Southend-on-Sea
Sourced, dated and written by us. The same ground we cover on your free call.
Are solar panels worth it in 2026? Here is the actual maths
Roughly £1,000 per kWp installed, offsetting electricity at 26.32p a unit. The real arithmetic.
Read the guide →Inside a home battery: capacity, power and losses
Usable capacity, kW output, round trip losses and chemistry, in plain terms.
Read the guide →How solar aware EV charging actually works
The CT clamp, the surplus tracking and the 1.4kW floor that catches people out.
Read the guide →Are air source heat pumps any good? What owners actually report
The UK's largest survey found 80% of heat pump owners satisfied, against 70% for gas boilers.
Read the guide →Will energy prices keep rising, and by how much
The January forecasts jumped fast. What is confirmed, what is guessed, and whether solar is a real hedge.
Read the guide →Your MCS certificate: what it shows, when it arrives, and how a Smart Export Guarantee supplier uses it
The document your export payments hang on. Who issues it, what it shows, and how to get a copy.
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.