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Solar panel cost in North Ayrshire (KA24)

See realistic solar installation costs, savings and payback for KA24 (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
11.2 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£875
What you save every year
Profit Over 25 Years
£12,103
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: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • 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

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £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 25.85p/kWh with a 64.17p/day standing charge. Your postcode’s south-facing sunshine yield is 892 kWh/kW — 42 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 892 kWh per year on a south-facing roof. We value self-used electricity at 25.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.9p/kWh
Standing charge
64.2p/day
Sunshine yield (south)
892 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: £729, Upfront: £8,139, 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 1785 kWh 714 kWh 1071 kWh £185 £107 £292 £3,256 11.2 yrs £2,576
3 kW 2677 kWh 1071 kWh 1606 kWh £277 £161 £437 £4,883 11.2 yrs £3,865
4 kW 3569 kWh 1428 kWh 2141 kWh £369 £214 £583 £6,511 11.2 yrs £5,153
5 kW 4461 kWh 1785 kWh 2677 kWh £461 £268 £729 £8,139 11.2 yrs £6,441
6 kW 5354 kWh 2141 kWh 3212 kWh £554 £321 £875 £9,767 11.2 yrs £7,729
7 kW 6246 kWh 2498 kWh 3748 kWh £646 £375 £1,021 £11,394 11.2 yrs £9,017
8 kW 7138 kWh 2855 kWh 4283 kWh £738 £428 £1,166 £13,022 11.2 yrs £10,305

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £870, Upfront: £10,239, 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 1785 kWh 1071 kWh 714 kWh £277 £71 £348 £5,356 15.4 yrs £1,608
3 kW 2677 kWh 1606 kWh 1071 kWh £415 £107 £522 £6,983 13.4 yrs £3,462
4 kW 3569 kWh 2141 kWh 1428 kWh £554 £143 £696 £8,611 12.4 yrs £5,316
5 kW 4461 kWh 2677 kWh 1785 kWh £692 £178 £870 £10,239 11.8 yrs £7,169
6 kW 5354 kWh 3212 kWh 2141 kWh £830 £214 £1,044 £11,867 11.4 yrs £9,023
7 kW 6246 kWh 3748 kWh 2498 kWh £969 £250 £1,219 £13,494 11.1 yrs £10,877
8 kW 7138 kWh 4283 kWh 2855 kWh £1,107 £286 £1,393 £15,122 10.9 yrs £12,731

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £941, Upfront: £11,639, Break-even: 12.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1785 kWh 1249 kWh 535 kWh £323 £54 £376 £6,756 17.9 yrs £773
3 kW 2677 kWh 1874 kWh 803 kWh £484 £80 £565 £8,383 14.8 yrs £2,910
4 kW 3569 kWh 2498 kWh 1071 kWh £646 £107 £753 £10,011 13.3 yrs £5,047
5 kW 4461 kWh 3123 kWh 1338 kWh £807 £134 £941 £11,639 12.4 yrs £7,184
6 kW 5354 kWh 3748 kWh 1606 kWh £969 £161 £1,129 £13,267 11.7 yrs £9,320
7 kW 6246 kWh 4372 kWh 1874 kWh £1,130 £187 £1,318 £14,894 11.3 yrs £11,457
8 kW 7138 kWh 4997 kWh 2141 kWh £1,292 £214 £1,506 £16,522 11.0 yrs £13,594

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £962, Upfront: £13,389, 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 1785 kWh 1303 kWh 482 kWh £337 £48 £385 £8,506 22.1 yrs £-807
3 kW 2677 kWh 1954 kWh 723 kWh £505 £72 £577 £10,133 17.5 yrs £1,415
4 kW 3569 kWh 2605 kWh 964 kWh £674 £96 £770 £11,761 15.3 yrs £3,636
5 kW 4461 kWh 3257 kWh 1205 kWh £842 £120 £962 £13,389 13.9 yrs £5,858
6 kW 5354 kWh 3908 kWh 1445 kWh £1,010 £145 £1,155 £15,017 13.0 yrs £8,079
7 kW 6246 kWh 4559 kWh 1686 kWh £1,179 £169 £1,347 £16,644 12.4 yrs £10,301
8 kW 7138 kWh 5211 kWh 1927 kWh £1,347 £193 £1,540 £18,272 11.9 yrs £12,523

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £976, Upfront: £15,139, Break-even: 15.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1785 kWh 1338 kWh 446 kWh £346 £45 £391 £10,256 26.3 yrs £-2,444
3 kW 2677 kWh 2008 kWh 669 kWh £519 £67 £586 £11,883 20.3 yrs £-166
4 kW 3569 kWh 2677 kWh 892 kWh £692 £89 £781 £13,511 17.3 yrs £2,113
5 kW 4461 kWh 3346 kWh 1115 kWh £865 £112 £976 £15,139 15.5 yrs £4,391
6 kW 5354 kWh 4015 kWh 1338 kWh £1,038 £134 £1,172 £16,767 14.3 yrs £6,669
7 kW 6246 kWh 4684 kWh 1561 kWh £1,211 £156 £1,367 £18,394 13.5 yrs £8,947
8 kW 7138 kWh 5354 kWh 1785 kWh £1,384 £178 £1,562 £20,022 12.8 yrs £11,225

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £991, Upfront: £17,589, Break-even: 17.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1785 kWh 1374 kWh 410 kWh £355 £41 £396 £12,706 32.1 yrs £-4,781
3 kW 2677 kWh 2061 kWh 616 kWh £533 £62 £594 £14,333 24.1 yrs £-2,446
4 kW 3569 kWh 2748 kWh 821 kWh £710 £82 £792 £15,961 20.1 yrs £-111
5 kW 4461 kWh 3435 kWh 1026 kWh £888 £103 £991 £17,589 17.8 yrs £2,224
6 kW 5354 kWh 4122 kWh 1231 kWh £1,066 £123 £1,189 £19,217 16.2 yrs £4,558
7 kW 6246 kWh 4809 kWh 1437 kWh £1,243 £144 £1,387 £20,844 15.0 yrs £6,893
8 kW 7138 kWh 5496 kWh 1642 kWh £1,421 £164 £1,585 £22,472 14.2 yrs £9,228

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, 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.

Before you request quotes in North Ayrshire

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Understand DNO, G98 and G99 export limits

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Insights for KA24

Figures below are tailored to KA24 — click through for full league tables.

Solar Payback Index Rank #2153 of 2996
11.2 years (UK avg 10.8 years)
~£875 /yr • £9,767 upfront
Standing-Charge Drag Rank #1692 of 2996
26.7% (UK avg 26.6%) drag on savings
£234 fixed • ~£875 /yr value
Aspect Penalty View ranking →
East −19.9% West −22.4%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA24

Monthly generation per kilowatt of solar panels

kWh 24 Jan 42 Feb 76 Mar 110 Apr 124 May 118 Jun 118 Jul 104 Aug 77 Sep 52 Oct 31 Nov 18 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 37.8% 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 112 kWh in winter, or 297 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
892kWh/kW
A 1 kW system generates ~892 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

Garnock Valley, Kilwinning, North Coast

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

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

KA14 (North Ayrshire)
≈4.5 km away
Local sunshine: ~878 kWh/kWp · -2% vs KA24
KA25 (North Ayrshire)
≈5.3 km away
Local sunshine: ~856 kWh/kWp · -4% vs KA24
KA13 (North Ayrshire)
≈6.1 km away
Local sunshine: ~880 kWh/kWp · -1% vs KA24
KA15 (North Ayrshire)
≈7.2 km away
Local sunshine: ~847 kWh/kWp · -5% vs KA24
KA20 (North Ayrshire)
≈7.7 km away
Local sunshine: ~868 kWh/kWp · -3% vs KA24
KA22 (North Ayrshire)
≈8.6 km away
Local sunshine: ~866 kWh/kWp · -3% vs KA24

Similar sunshine across the UK

BT6 (Belfast)
~892 kWh/kWp · -0% vs KA24
CA23 (Cumberland)
~892 kWh/kWp · +0% vs KA24
BT4 (Belfast)
~892 kWh/kWp · +0% vs KA24