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Solar panel cost in North Ayrshire (KA11)

See realistic solar installation costs, savings and payback for KA11 (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
15.1 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£808
What you save every year
Profit Over 25 Years
£7,988
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 22.82p/kWh with a 64.81p/day standing charge. Your postcode’s south-facing sunshine yield is 890 kWh/kW — 40 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 890 kWh per year on a south-facing roof. We value self-used electricity at 22.8p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
22.8p/kWh
Standing charge
64.8p/day
Sunshine yield (south)
890 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: £673, Upfront: £10,173, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1780 kWh 712 kWh 1068 kWh £162 £107 £269 £4,069 15.1 yrs £1,316
3 kW 2670 kWh 1068 kWh 1602 kWh £244 £160 £404 £6,104 15.1 yrs £1,974
4 kW 3560 kWh 1424 kWh 2136 kWh £325 £214 £539 £8,138 15.1 yrs £2,633
5 kW 4450 kWh 1780 kWh 2670 kWh £406 £267 £673 £10,173 15.1 yrs £3,291
6 kW 5340 kWh 2136 kWh 3204 kWh £487 £320 £808 £12,207 15.1 yrs £3,949
7 kW 6230 kWh 2492 kWh 3738 kWh £569 £374 £942 £14,242 15.1 yrs £4,607
8 kW 7120 kWh 2848 kWh 4272 kWh £650 £427 £1,077 £16,276 15.1 yrs £5,265

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: £787, Upfront: £12,273, 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 1780 kWh 1068 kWh 712 kWh £244 £71 £315 £6,169 19.6 yrs £129
3 kW 2670 kWh 1602 kWh 1068 kWh £366 £107 £472 £8,204 17.4 yrs £1,244
4 kW 3560 kWh 2136 kWh 1424 kWh £487 £142 £630 £10,238 16.3 yrs £2,358
5 kW 4450 kWh 2670 kWh 1780 kWh £609 £178 £787 £12,273 15.6 yrs £3,473
6 kW 5340 kWh 3204 kWh 2136 kWh £731 £214 £945 £14,307 15.1 yrs £4,587
7 kW 6230 kWh 3738 kWh 2492 kWh £853 £249 £1,102 £16,342 14.8 yrs £5,702
8 kW 7120 kWh 4272 kWh 2848 kWh £975 £285 £1,260 £18,376 14.6 yrs £6,816

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: £844, Upfront: £13,673, Break-even: 16.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1780 kWh 1246 kWh 534 kWh £284 £53 £338 £7,569 22.4 yrs £-815
3 kW 2670 kWh 1869 kWh 801 kWh £426 £80 £507 £9,604 19.0 yrs £528
4 kW 3560 kWh 2492 kWh 1068 kWh £569 £107 £675 £11,638 17.2 yrs £1,871
5 kW 4450 kWh 3115 kWh 1335 kWh £711 £133 £844 £13,673 16.2 yrs £3,214
6 kW 5340 kWh 3738 kWh 1602 kWh £853 £160 £1,013 £15,707 15.5 yrs £4,556
7 kW 6230 kWh 4361 kWh 1869 kWh £995 £187 £1,182 £17,742 15.0 yrs £5,899
8 kW 7120 kWh 4984 kWh 2136 kWh £1,137 £214 £1,351 £19,776 14.6 yrs £7,242

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: £861, Upfront: £15,423, Break-even: 17.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1780 kWh 1299 kWh 481 kWh £297 £48 £345 £9,319 27.0 yrs £-2,428
3 kW 2670 kWh 1949 kWh 721 kWh £445 £72 £517 £11,354 22.0 yrs £-1,017
4 kW 3560 kWh 2599 kWh 961 kWh £593 £96 £689 £13,388 19.4 yrs £395
5 kW 4450 kWh 3248 kWh 1201 kWh £741 £120 £861 £15,423 17.9 yrs £1,806
6 kW 5340 kWh 3898 kWh 1442 kWh £890 £144 £1,034 £17,457 16.9 yrs £3,217
7 kW 6230 kWh 4548 kWh 1682 kWh £1,038 £168 £1,206 £19,492 16.2 yrs £4,628
8 kW 7120 kWh 5197 kWh 1922 kWh £1,186 £192 £1,378 £21,526 15.6 yrs £6,039

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: £873, Upfront: £17,173, Break-even: 19.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1780 kWh 1335 kWh 445 kWh £305 £44 £349 £11,069 31.7 yrs £-4,086
3 kW 2670 kWh 2002 kWh 667 kWh £457 £67 £524 £13,104 25.0 yrs £-2,630
4 kW 3560 kWh 2670 kWh 890 kWh £609 £89 £698 £15,138 21.7 yrs £-1,173
5 kW 4450 kWh 3337 kWh 1112 kWh £762 £111 £873 £17,173 19.7 yrs £284
6 kW 5340 kWh 4005 kWh 1335 kWh £914 £133 £1,047 £19,207 18.3 yrs £1,741
7 kW 6230 kWh 4672 kWh 1557 kWh £1,066 £156 £1,222 £21,242 17.4 yrs £3,198
8 kW 7120 kWh 5340 kWh 1780 kWh £1,219 £178 £1,397 £23,276 16.7 yrs £4,654

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: £884, Upfront: £19,623, Break-even: 22.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1780 kWh 1371 kWh 409 kWh £313 £41 £354 £13,519 38.2 yrs £-6,445
3 kW 2670 kWh 2056 kWh 614 kWh £469 £61 £531 £15,554 29.3 yrs £-4,943
4 kW 3560 kWh 2741 kWh 819 kWh £626 £82 £707 £17,588 24.9 yrs £-3,440
5 kW 4450 kWh 3426 kWh 1023 kWh £782 £102 £884 £19,623 22.2 yrs £-1,938
6 kW 5340 kWh 4112 kWh 1228 kWh £938 £123 £1,061 £21,657 20.4 yrs £-435
7 kW 6230 kWh 4797 kWh 1433 kWh £1,095 £143 £1,238 £23,692 19.1 yrs £1,067
8 kW 7120 kWh 5482 kWh 1638 kWh £1,251 £164 £1,415 £25,726 18.2 yrs £2,570

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 KA11

Figures below are tailored to KA11 — click through for full league tables.

Solar Payback Index Rank #2460 of 2997
13.5 years (UK avg 12.6 years)
~£901 /yr • £12,207 upfront
Standing-Charge Drag Rank #1522 of 2997
23.3% (UK avg 24.6%) drag on savings
£210 fixed • ~£901 /yr value
Aspect Penalty View ranking →
East −20.2% West −21.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA11

Monthly generation per kilowatt of solar panels

kWh 23 Jan 42 Feb 76 Mar 108 Apr 123 May 117 Jun 117 Jul 104 Aug 76 Sep 52 Oct 32 Nov 19 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 38.0% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 28 kWh per month; the average month produces around 74 kWh. So a typical 4 kW home system would generate roughly 113 kWh in winter, or 297 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
22.82p/kWh
Daily Fixed Charge
64.81p/day
Local Sunshine
890kWh/kW
A 1 kW system generates ~890 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

Irvine East, Irvine South, Irvine West, Annick

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

KA12 (North Ayrshire)
≈2.3 km away
Local sunshine: ~897 kWh/kWp · +1% vs KA11
KA2 (East Ayrshire)
≈5.1 km away
Local sunshine: ~865 kWh/kWp · -3% vs KA11
KA13 (North Ayrshire)
≈6.0 km away
Local sunshine: ~880 kWh/kWp · -1% vs KA11
KA10 (South Ayrshire)
≈7.8 km away
Local sunshine: ~883 kWh/kWp · -1% vs KA11
KA20 (North Ayrshire)
≈8.0 km away
Local sunshine: ~868 kWh/kWp · -3% vs KA11
KA3 (East Ayrshire)
≈8.6 km away
Local sunshine: ~851 kWh/kWp · -4% vs KA11

Similar sunshine across the UK

AB16 (Aberdeen City)
~890 kWh/kWp · -0% vs KA11
SY17 (Powys)
~890 kWh/kWp · -0% vs KA11
WA15 (Trafford)
~890 kWh/kWp · -0% vs KA11