Solar explained to clever people by people who are not trying to be clever
Home Regions
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in BN11 (Worthing)

See if solar pays off for you in Worthing — price, savings and payback in under a minute (official UK data).

Solar Calculator

Change the settings below to see how costs and savings work for your situation.

System Size

Roof Direction

Battery Storage

Export Value

Your Numbers

Break-even
10.8 years
After this, it's pure profit
Upfront Cost
£6,104
What you pay to get started
Annual Benefit
£563
What you save every year
Profit Over 25 Years
£7,969
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
How we calculate this

Solar generation: Based on typical south-facing roof at 35° angle. We account for weather, dirt, and system losses (14%).

How much you'll use directly:

  • Without battery: You'll use about 40% of what you generate. The rest gets sold back to the grid.
  • With 5 kWh battery: You'll use about 70% (battery stores extra for evening use).
  • With 10 kWh battery: You'll use about 75% (more storage means less exported).
  • Panel-only payback: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • Battery & payback: Batteries raise self-use and cut bills, but added hardware cost often lengthens break-even at typical UK rates.
  • When a battery can still make sense:
    • Evening-heavy usage patterns
    • Time-of-use tariffs / cheap night rates
    • Low export rate vs. high unit rate
    • Heat pump or EV charging synergy
    • Optional backup/resilience (system-dependent)
    • Lower evening-hour CO₂ vs. grid

Costs: Battery prices are typically £700 per kWh. Export tariffs vary by supplier (usually 5–15p per kWh).

Grid connection: Systems up to about 3.7 kW typically need just a notification (G98). Larger systems may need permission (G99).

These are typical values based on average usage patterns. Your actual results will vary based on your roof, shading, and how you use electricity.

Your area in context

In South East, the current unit rate is 26.92p/kWh with a 47.60p/day standing charge. Your postcode’s south-facing sunshine yield is 1119 kWh/kW — 90 above the regional median (1029).

Read the full story

A typical roof here lands around 3.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 1119 kWh per year on a south-facing roof. We value self-used electricity at 26.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.9p/kWh
Standing charge
47.6p/day
Sunshine yield (south)
1119 kWh/kW
Export price (baseline)
10p/kWh

Browse the scenarios below. Each battery size has its own expand — open the one that matches your plan (or just explore). For each system size (2–8 kW) we show annual output, how much you use directly, what gets exported, annual benefit, upfront cost, break-even, and a 20-year net. Negative numbers are possible — that’s the honest trade-off when adding more battery than your usage profile justifies.

No battery 5 kW example → Annual benefit: £938, Upfront: £10,173, Break-even: 10.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 895 kWh 1343 kWh £241 £134 £375 £4,069 10.8 yrs £3,436
3 kW 3357 kWh 1343 kWh 2014 kWh £361 £201 £563 £6,104 10.8 yrs £5,155
4 kW 4476 kWh 1790 kWh 2686 kWh £482 £269 £751 £8,138 10.8 yrs £6,873
5 kW 5595 kWh 2238 kWh 3357 kWh £602 £336 £938 £10,173 10.8 yrs £8,591
6 kW 6714 kWh 2686 kWh 4028 kWh £723 £403 £1,126 £12,207 10.8 yrs £10,309
7 kW 7833 kWh 3133 kWh 4700 kWh £843 £470 £1,313 £14,242 10.8 yrs £12,027
8 kW 8952 kWh 3581 kWh 5371 kWh £964 £537 £1,501 £16,276 10.8 yrs £13,745

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £1,128, Upfront: £12,273, Break-even: 10.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1343 kWh 895 kWh £361 £90 £451 £6,169 13.7 yrs £2,851
3 kW 3357 kWh 2014 kWh 1343 kWh £542 £134 £677 £8,204 12.1 yrs £5,327
4 kW 4476 kWh 2686 kWh 1790 kWh £723 £179 £902 £10,238 11.4 yrs £7,802
5 kW 5595 kWh 3357 kWh 2238 kWh £904 £224 £1,128 £12,273 10.9 yrs £10,278
6 kW 6714 kWh 4028 kWh 2686 kWh £1,084 £269 £1,353 £14,307 10.6 yrs £12,753
7 kW 7833 kWh 4700 kWh 3133 kWh £1,265 £313 £1,579 £16,342 10.4 yrs £15,229
8 kW 8952 kWh 5371 kWh 3581 kWh £1,446 £358 £1,804 £18,376 10.2 yrs £17,704

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,222, Upfront: £13,673, Break-even: 11.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1567 kWh 671 kWh £422 £67 £489 £7,569 15.5 yrs £2,208
3 kW 3357 kWh 2350 kWh 1007 kWh £633 £101 £733 £9,604 13.1 yrs £5,063
4 kW 4476 kWh 3133 kWh 1343 kWh £843 £134 £978 £11,638 11.9 yrs £7,917
5 kW 5595 kWh 3916 kWh 1679 kWh £1,054 £168 £1,222 £13,673 11.2 yrs £10,771
6 kW 6714 kWh 4700 kWh 2014 kWh £1,265 £201 £1,467 £15,707 10.7 yrs £13,625
7 kW 7833 kWh 5483 kWh 2350 kWh £1,476 £235 £1,711 £17,742 10.4 yrs £16,479
8 kW 8952 kWh 6266 kWh 2686 kWh £1,687 £269 £1,955 £19,776 10.1 yrs £19,333

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,251, Upfront: £15,423, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1634 kWh 604 kWh £440 £60 £500 £9,319 18.6 yrs £686
3 kW 3357 kWh 2451 kWh 906 kWh £660 £91 £750 £11,354 15.1 yrs £3,653
4 kW 4476 kWh 3267 kWh 1209 kWh £880 £121 £1,000 £13,388 13.4 yrs £6,621
5 kW 5595 kWh 4084 kWh 1511 kWh £1,100 £151 £1,251 £15,423 12.3 yrs £9,589
6 kW 6714 kWh 4901 kWh 1813 kWh £1,319 £181 £1,501 £17,457 11.6 yrs £12,557
7 kW 7833 kWh 5718 kWh 2115 kWh £1,539 £211 £1,751 £19,492 11.1 yrs £15,524
8 kW 8952 kWh 6535 kWh 2417 kWh £1,759 £242 £2,001 £21,526 10.8 yrs £18,492

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,270, Upfront: £17,173, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1678 kWh 560 kWh £452 £56 £508 £11,069 21.8 yrs £-913
3 kW 3357 kWh 2518 kWh 839 kWh £678 £84 £762 £13,104 17.2 yrs £2,131
4 kW 4476 kWh 3357 kWh 1119 kWh £904 £112 £1,016 £15,138 14.9 yrs £5,174
5 kW 5595 kWh 4196 kWh 1399 kWh £1,130 £140 £1,270 £17,173 13.5 yrs £8,218
6 kW 6714 kWh 5036 kWh 1678 kWh £1,356 £168 £1,523 £19,207 12.6 yrs £11,261
7 kW 7833 kWh 5875 kWh 1958 kWh £1,581 £196 £1,777 £21,242 12.0 yrs £14,305
8 kW 8952 kWh 6714 kWh 2238 kWh £1,807 £224 £2,031 £23,276 11.5 yrs £17,348

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,288, Upfront: £19,623, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1723 kWh 515 kWh £464 £51 £515 £13,519 26.2 yrs £-3,212
3 kW 3357 kWh 2585 kWh 772 kWh £696 £77 £773 £15,554 20.1 yrs £-92
4 kW 4476 kWh 3447 kWh 1029 kWh £928 £103 £1,031 £17,588 17.1 yrs £3,027
5 kW 5595 kWh 4308 kWh 1287 kWh £1,160 £129 £1,288 £19,623 15.2 yrs £6,146
6 kW 6714 kWh 5170 kWh 1544 kWh £1,392 £154 £1,546 £21,657 14.0 yrs £9,265
7 kW 7833 kWh 6031 kWh 1802 kWh £1,624 £180 £1,804 £23,692 13.1 yrs £12,385
8 kW 8952 kWh 6893 kWh 2059 kWh £1,856 £206 £2,062 £25,726 12.5 yrs £15,504

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

Figures are illustrative and use the same method as the calculator above. For exact results, adjust your roof direction, tariff, and usage in the calculator.

Insights for BN11

Figures below are tailored to BN11 — click through for full league tables.

Big-Roof Britain Rank #2124 of 2182
3.8 kWp (UK avg 5.1 kWp)
~8 panels (≈430 W)
Solar Payback Index Rank #14 of 2997
9.4 years (UK avg 11.3 years)
~£1,296 /yr • £12,207 upfront
Standing-Charge Drag Rank #44 of 2997
13.4% (UK avg 21.7%) drag on savings
£174 fixed • ~£1,296 /yr value

Your Area at a Glance

Your Electricity Rate
26.92p/kWh
Daily Fixed Charge
47.60p/day
Local Sunshine
1119kWh/kW
A 1 kW system generates ~1119 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
3.0kW
For eligible homes in this area

⚠️ This area is predominantly flats. Many residents require freeholder approval for solar installations. System size shown reflects houses and bungalows only.

Local Property Data

Property Types

Houses: 23% • Flats: 72% • Bungalows: 2% Based on 12,942 properties

Coverage

Worthing (100%)

Areas Covered

Central, Heene, Marine, Selden, Castle, Tarring, East Preston, West Chiltington + 1 more

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q4 2025

Installation costs: MCS certified installer data, March 2025

Property data: EPC open data (Open Government Licence), aggregated

All estimates are typical values. Actual results vary based on your specific situation, roof characteristics, and usage patterns.

Compare nearby areas

Nearby in South East

BN14 (Worthing)
≈1.5 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN11
BN95 (Adur)
≈3.0 km away
Local sunshine: ~1,112 kWh/kWp · -1% vs BN11
BN99 (Adur)
≈3.1 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN11
BN13 (Worthing)
≈3.2 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN11
BN12 (Worthing)
≈3.7 km away
Local sunshine: ~1,123 kWh/kWp · +0% vs BN11
BN15 (Adur)
≈3.7 km away
Local sunshine: ~1,112 kWh/kWp · -1% vs BN11

Similar sunshine across the UK

PO20 (Chichester)
~1,122 kWh/kWp · +0% vs BN11
TQ8 (South Hams)
~1,115 kWh/kWp · -0% vs BN11
TQ7 (South Hams)
~1,123 kWh/kWp · +0% vs BN11