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Solar panel cost in North Ayrshire (KA23)

See realistic solar installation costs, savings and payback for KA23 (North Ayrshire) 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
13.7 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£888
What you save every year
Profit Over 25 Years
£10,005
After paying itself off, you're this much ahead

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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 Southern Scotland, the current unit rate is 27.18p/kWh with a 57.62p/day standing charge. Your postcode’s south-facing sunshine yield is 878 kWh/kW — 28 above the regional median (850).

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 878 kWh per year on a south-facing roof. We value self-used electricity at 27.2p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.2p/kWh
Standing charge
57.6p/day
Sunshine yield (south)
878 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: £740, Upfront: £10,173, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 702 kWh 1053 kWh £191 £105 £296 £4,069 13.7 yrs £1,854
3 kW 2633 kWh 1053 kWh 1580 kWh £286 £158 £444 £6,104 13.7 yrs £2,781
4 kW 3511 kWh 1404 kWh 2106 kWh £382 £211 £592 £8,138 13.7 yrs £3,708
5 kW 4388 kWh 1755 kWh 2633 kWh £477 £263 £740 £10,173 13.7 yrs £4,635
6 kW 5266 kWh 2106 kWh 3160 kWh £573 £316 £888 £12,207 13.7 yrs £5,562
7 kW 6144 kWh 2457 kWh 3686 kWh £668 £369 £1,037 £14,242 13.7 yrs £6,489
8 kW 7021 kWh 2809 kWh 4213 kWh £763 £421 £1,185 £16,276 13.7 yrs £7,417

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: £891, Upfront: £12,273, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 1053 kWh 702 kWh £286 £70 £356 £6,169 17.3 yrs £960
3 kW 2633 kWh 1580 kWh 1053 kWh £429 £105 £535 £8,204 15.3 yrs £2,491
4 kW 3511 kWh 2106 kWh 1404 kWh £573 £140 £713 £10,238 14.4 yrs £4,021
5 kW 4388 kWh 2633 kWh 1755 kWh £716 £176 £891 £12,273 13.8 yrs £5,551
6 kW 5266 kWh 3160 kWh 2106 kWh £859 £211 £1,069 £14,307 13.4 yrs £7,081
7 kW 6144 kWh 3686 kWh 2457 kWh £1,002 £246 £1,248 £16,342 13.1 yrs £8,611
8 kW 7021 kWh 4213 kWh 2809 kWh £1,145 £281 £1,426 £18,376 12.9 yrs £10,142

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: £967, Upfront: £13,673, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 1229 kWh 527 kWh £334 £53 £387 £7,569 19.6 yrs £164
3 kW 2633 kWh 1843 kWh 790 kWh £501 £79 £580 £9,604 16.6 yrs £1,995
4 kW 3511 kWh 2457 kWh 1053 kWh £668 £105 £773 £11,638 15.1 yrs £3,827
5 kW 4388 kWh 3072 kWh 1316 kWh £835 £132 £967 £13,673 14.1 yrs £5,659
6 kW 5266 kWh 3686 kWh 1580 kWh £1,002 £158 £1,160 £15,707 13.5 yrs £7,491
7 kW 6144 kWh 4301 kWh 1843 kWh £1,169 £184 £1,353 £17,742 13.1 yrs £9,322
8 kW 7021 kWh 4915 kWh 2106 kWh £1,336 £211 £1,547 £19,776 12.8 yrs £11,154

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: £989, Upfront: £15,423, Break-even: 15.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 1281 kWh 474 kWh £348 £47 £396 £9,319 23.6 yrs £-1,406
3 kW 2633 kWh 1922 kWh 711 kWh £522 £71 £594 £11,354 19.1 yrs £517
4 kW 3511 kWh 2563 kWh 948 kWh £697 £95 £791 £13,388 16.9 yrs £2,439
5 kW 4388 kWh 3203 kWh 1185 kWh £871 £118 £989 £15,423 15.6 yrs £4,361
6 kW 5266 kWh 3844 kWh 1422 kWh £1,045 £142 £1,187 £17,457 14.7 yrs £6,283
7 kW 6144 kWh 4485 kWh 1659 kWh £1,219 £166 £1,385 £19,492 14.1 yrs £8,206
8 kW 7021 kWh 5126 kWh 1896 kWh £1,393 £190 £1,583 £21,526 13.6 yrs £10,128

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: £1,004, Upfront: £17,173, Break-even: 17.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 1316 kWh 439 kWh £358 £44 £402 £11,069 27.6 yrs £-3,035
3 kW 2633 kWh 1975 kWh 658 kWh £537 £66 £603 £13,104 21.7 yrs £-1,052
4 kW 3511 kWh 2633 kWh 878 kWh £716 £88 £803 £15,138 18.8 yrs £930
5 kW 4388 kWh 3291 kWh 1097 kWh £895 £110 £1,004 £17,173 17.1 yrs £2,913
6 kW 5266 kWh 3949 kWh 1316 kWh £1,073 £132 £1,205 £19,207 15.9 yrs £4,895
7 kW 6144 kWh 4608 kWh 1536 kWh £1,252 £154 £1,406 £21,242 15.1 yrs £6,878
8 kW 7021 kWh 5266 kWh 1755 kWh £1,431 £176 £1,607 £23,276 14.5 yrs £8,860

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: £1,019, Upfront: £19,623, Break-even: 19.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1755 kWh 1352 kWh 404 kWh £367 £40 £408 £13,519 33.2 yrs £-5,364
3 kW 2633 kWh 2027 kWh 606 kWh £551 £61 £612 £15,554 25.4 yrs £-3,321
4 kW 3511 kWh 2703 kWh 807 kWh £735 £81 £815 £17,588 21.6 yrs £-1,279
5 kW 4388 kWh 3379 kWh 1009 kWh £918 £101 £1,019 £19,623 19.3 yrs £764
6 kW 5266 kWh 4055 kWh 1211 kWh £1,102 £121 £1,223 £21,657 17.7 yrs £2,807
7 kW 6144 kWh 4731 kWh 1413 kWh £1,286 £141 £1,427 £23,692 16.6 yrs £4,850
8 kW 7021 kWh 5406 kWh 1615 kWh £1,469 £161 £1,631 £25,726 15.8 yrs £6,893

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 KA23

Figures below are tailored to KA23 — click through for full league tables.

Solar Payback Index Rank #2575 of 2997
13.7 years (UK avg 12.6 years)
~£888 /yr • £12,207 upfront
Standing-Charge Drag Rank #1606 of 2997
23.7% (UK avg 24.6%) drag on savings
£210 fixed • ~£888 /yr value
Aspect Penalty View ranking →
East −20.3% West −22.9%
Typical output loss versus a south-facing roof (lower is better)

Your Area at a Glance

Your Electricity Rate
27.18p/kWh
Daily Fixed Charge
57.62p/day
Local Sunshine
878kWh/kW
A 1 kW system generates ~878 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

North Ayrshire (100%)

Areas Covered

North Coast, Saltcoats and Stevenston

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 Southern Scotland

KA22 (North Ayrshire)
≈5.7 km away
Local sunshine: ~866 kWh/kWp · -1% vs KA23
KA29 (North Ayrshire)
≈7.1 km away
Local sunshine: ~845 kWh/kWp · -4% vs KA23
KA21 (North Ayrshire)
≈7.4 km away
Local sunshine: ~866 kWh/kWp · -1% vs KA23
KA20 (North Ayrshire)
≈8.8 km away
Local sunshine: ~868 kWh/kWp · -1% vs KA23
KA24 (North Ayrshire)
≈8.8 km away
Local sunshine: ~892 kWh/kWp · +2% vs KA23
KA13 (North Ayrshire)
≈10.7 km away
Local sunshine: ~880 kWh/kWp · +0% vs KA23

Similar sunshine across the UK

LL37 (Gwynedd)
~878 kWh/kWp · +0% vs KA23
LL20 (Denbighshire)
~877 kWh/kWp · -0% vs KA23
BT68 (Mid Ulster)
~878 kWh/kWp · +0% vs KA23