Independent solar numbers for your postcode using official UK data
Home Regions Guides Get quote
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality Seasonal Solar Output

Solar panel cost in Adur (BN99)

See realistic solar installation costs, savings and payback for BN99 (Adur) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

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
11.8 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£1,035
What you save every year
Profit Over 25 Years
£13,662
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 23.53p/kWh with a 54.74p/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 6.0 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 23.5p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
23.5p/kWh
Standing charge
54.7p/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: £862, Upfront: £10,173, Break-even: 11.8 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 £211 £134 £345 £4,069 11.8 yrs £2,829
3 kW 3357 kWh 1343 kWh 2014 kWh £316 £201 £517 £6,104 11.8 yrs £4,244
4 kW 4476 kWh 1790 kWh 2686 kWh £421 £269 £690 £8,138 11.8 yrs £5,659
5 kW 5595 kWh 2238 kWh 3357 kWh £527 £336 £862 £10,173 11.8 yrs £7,073
6 kW 6714 kWh 2686 kWh 4028 kWh £632 £403 £1,035 £12,207 11.8 yrs £8,488
7 kW 7833 kWh 3133 kWh 4700 kWh £737 £470 £1,207 £14,242 11.8 yrs £9,903
8 kW 8952 kWh 3581 kWh 5371 kWh £843 £537 £1,380 £16,276 11.8 yrs £11,318

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: £1,014, Upfront: £12,273, Break-even: 12.1 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 £316 £90 £405 £6,169 15.2 yrs £1,941
3 kW 3357 kWh 2014 kWh 1343 kWh £474 £134 £608 £8,204 13.5 yrs £3,961
4 kW 4476 kWh 2686 kWh 1790 kWh £632 £179 £811 £10,238 12.6 yrs £5,981
5 kW 5595 kWh 3357 kWh 2238 kWh £790 £224 £1,014 £12,273 12.1 yrs £8,001
6 kW 6714 kWh 4028 kWh 2686 kWh £948 £269 £1,216 £14,307 11.8 yrs £10,022
7 kW 7833 kWh 4700 kWh 3133 kWh £1,106 £313 £1,419 £16,342 11.5 yrs £12,042
8 kW 8952 kWh 5371 kWh 3581 kWh £1,264 £358 £1,622 £18,376 11.3 yrs £14,062

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: £1,089, Upfront: £13,673, Break-even: 12.6 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 £369 £67 £436 £7,569 17.4 yrs £1,146
3 kW 3357 kWh 2350 kWh 1007 kWh £553 £101 £654 £9,604 14.7 yrs £3,469
4 kW 4476 kWh 3133 kWh 1343 kWh £737 £134 £872 £11,638 13.4 yrs £5,792
5 kW 5595 kWh 3916 kWh 1679 kWh £922 £168 £1,089 £13,673 12.6 yrs £8,115
6 kW 6714 kWh 4700 kWh 2014 kWh £1,106 £201 £1,307 £15,707 12.0 yrs £10,439
7 kW 7833 kWh 5483 kWh 2350 kWh £1,290 £235 £1,525 £17,742 11.6 yrs £12,762
8 kW 8952 kWh 6266 kWh 2686 kWh £1,474 £269 £1,743 £19,776 11.3 yrs £15,085

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: £1,112, Upfront: £15,423, Break-even: 13.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2238 kWh 1634 kWh 604 kWh £384 £60 £445 £9,319 20.9 yrs £-422
3 kW 3357 kWh 2451 kWh 906 kWh £577 £91 £667 £11,354 17.0 yrs £1,992
4 kW 4476 kWh 3267 kWh 1209 kWh £769 £121 £890 £13,388 15.0 yrs £4,406
5 kW 5595 kWh 4084 kWh 1511 kWh £961 £151 £1,112 £15,423 13.9 yrs £6,820
6 kW 6714 kWh 4901 kWh 1813 kWh £1,153 £181 £1,335 £17,457 13.1 yrs £9,234
7 kW 7833 kWh 5718 kWh 2115 kWh £1,345 £211 £1,557 £19,492 12.5 yrs £11,648
8 kW 8952 kWh 6535 kWh 2417 kWh £1,538 £242 £1,779 £21,526 12.1 yrs £14,062

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: £1,127, Upfront: £17,173, 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 1678 kWh 560 kWh £395 £56 £451 £11,069 24.5 yrs £-2,051
3 kW 3357 kWh 2518 kWh 839 kWh £592 £84 £676 £13,104 19.4 yrs £424
4 kW 4476 kWh 3357 kWh 1119 kWh £790 £112 £902 £15,138 16.8 yrs £2,898
5 kW 5595 kWh 4196 kWh 1399 kWh £987 £140 £1,127 £17,173 15.2 yrs £5,373
6 kW 6714 kWh 5036 kWh 1678 kWh £1,185 £168 £1,353 £19,207 14.2 yrs £7,847
7 kW 7833 kWh 5875 kWh 1958 kWh £1,382 £196 £1,578 £21,242 13.5 yrs £10,322
8 kW 8952 kWh 6714 kWh 2238 kWh £1,580 £224 £1,804 £23,276 12.9 yrs £12,796

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: £1,142, Upfront: £19,623, Break-even: 17.2 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 £405 £51 £457 £13,519 29.6 yrs £-4,380
3 kW 3357 kWh 2585 kWh 772 kWh £608 £77 £685 £15,554 22.7 yrs £-1,845
4 kW 4476 kWh 3447 kWh 1029 kWh £811 £103 £914 £17,588 19.2 yrs £690
5 kW 5595 kWh 4308 kWh 1287 kWh £1,014 £129 £1,142 £19,623 17.2 yrs £3,225
6 kW 6714 kWh 5170 kWh 1544 kWh £1,216 £154 £1,371 £21,657 15.8 yrs £5,760
7 kW 7833 kWh 6031 kWh 1802 kWh £1,419 £180 £1,599 £23,692 14.8 yrs £8,295
8 kW 8952 kWh 6893 kWh 2059 kWh £1,622 £206 £1,828 £25,726 14.1 yrs £10,830

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 BN99

Figures below are tailored to BN99 — click through for full league tables.

Solar Payback Index Rank #27 of 2997
10.5 years (UK avg 12.6 years)
~£1,162 /yr • £12,207 upfront
Standing-Charge Drag Rank #51 of 2997
15.3% (UK avg 24.6%) drag on savings
£178 fixed • ~£1,162 /yr value
Aspect Penalty View ranking →
East −21.0% West −22.6%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BN99

Monthly generation per kilowatt of solar panels

kWh 42 Jan 58 Feb 95 Mar 127 Apr 135 May 139 Jun 140 Jul 122 Aug 103 Sep 72 Oct 48 Nov 38 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.1% of an average month (Dec–Feb)

Best / worst month: Jul / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 46 kWh per month; the average month produces around 93 kWh. So a typical 4 kW home system would generate roughly 183 kWh in winter, or 373 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.53p/kWh
Daily Fixed Charge
54.74p/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
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

No EPC data available for this outcode

Coverage

Adur (67%)|Worthing (33%)

Areas Covered

Churchill, Central, Castle, Northbrook, Goring, Gaisford, Marine

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q1 2026

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

BN95 (Adur)
≈0.2 km away
Local sunshine: ~1,112 kWh/kWp · -1% vs BN99
BN15 (Adur)
≈0.6 km away
Local sunshine: ~1,112 kWh/kWp · -1% vs BN99
BN11 (Worthing)
≈3.1 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN99
BN14 (Worthing)
≈3.2 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN99
BN43 (Adur)
≈4.2 km away
Local sunshine: ~1,109 kWh/kWp · -1% vs BN99
BN13 (Worthing)
≈5.4 km away
Local sunshine: ~1,119 kWh/kWp · +0% vs BN99

Similar sunshine across the UK

PO20 (Chichester)
~1,122 kWh/kWp · +0% vs BN99
TQ8 (South Hams)
~1,115 kWh/kWp · -0% vs BN99
TQ7 (South Hams)
~1,123 kWh/kWp · +0% vs BN99