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Solar panel cost in North Ayrshire (KA25)

See realistic solar installation costs, savings and payback for KA25 (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
11.6 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£839
What you save every year
Profit Over 25 Years
£11,211
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 856 kWh/kW — 6 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 856 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)
856 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: £699, Upfront: £8,139, Break-even: 11.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1712 kWh 685 kWh 1027 kWh £177 £103 £280 £3,256 11.6 yrs £2,339
3 kW 2568 kWh 1027 kWh 1541 kWh £265 £154 £420 £4,883 11.6 yrs £3,508
4 kW 3424 kWh 1369 kWh 2054 kWh £354 £205 £559 £6,511 11.6 yrs £4,677
5 kW 4279 kWh 1712 kWh 2568 kWh £442 £257 £699 £8,139 11.6 yrs £5,846
6 kW 5135 kWh 2054 kWh 3081 kWh £531 £308 £839 £9,767 11.6 yrs £7,016
7 kW 5991 kWh 2396 kWh 3595 kWh £619 £359 £979 £11,394 11.6 yrs £8,185
8 kW 6847 kWh 2739 kWh 4108 kWh £708 £411 £1,119 £13,022 11.6 yrs £9,354

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: £835, Upfront: £10,239, 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 1712 kWh 1027 kWh 685 kWh £265 £68 £334 £5,356 16.0 yrs £1,324
3 kW 2568 kWh 1541 kWh 1027 kWh £398 £103 £501 £6,983 13.9 yrs £3,036
4 kW 3424 kWh 2054 kWh 1369 kWh £531 £137 £668 £8,611 12.9 yrs £4,748
5 kW 4279 kWh 2568 kWh 1712 kWh £664 £171 £835 £10,239 12.3 yrs £6,459
6 kW 5135 kWh 3081 kWh 2054 kWh £796 £205 £1,002 £11,867 11.8 yrs £8,171
7 kW 5991 kWh 3595 kWh 2396 kWh £929 £240 £1,169 £13,494 11.5 yrs £9,883
8 kW 6847 kWh 4108 kWh 2739 kWh £1,062 £274 £1,336 £15,122 11.3 yrs £11,595

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: £903, Upfront: £11,639, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1712 kWh 1198 kWh 514 kWh £310 £51 £361 £6,756 18.7 yrs £466
3 kW 2568 kWh 1797 kWh 770 kWh £465 £77 £542 £8,383 15.5 yrs £2,450
4 kW 3424 kWh 2396 kWh 1027 kWh £619 £103 £722 £10,011 13.9 yrs £4,433
5 kW 4279 kWh 2996 kWh 1284 kWh £774 £128 £903 £11,639 12.9 yrs £6,416
6 kW 5135 kWh 3595 kWh 1541 kWh £929 £154 £1,083 £13,267 12.2 yrs £8,399
7 kW 5991 kWh 4194 kWh 1797 kWh £1,084 £180 £1,264 £14,894 11.8 yrs £10,382
8 kW 6847 kWh 4793 kWh 2054 kWh £1,239 £205 £1,444 £16,522 11.4 yrs £12,366

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: £923, Upfront: £13,389, Break-even: 14.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1712 kWh 1250 kWh 462 kWh £323 £46 £369 £8,506 23.0 yrs £-1,121
3 kW 2568 kWh 1874 kWh 693 kWh £485 £69 £554 £10,133 18.3 yrs £944
4 kW 3424 kWh 2499 kWh 924 kWh £646 £92 £738 £11,761 15.9 yrs £3,008
5 kW 4279 kWh 3124 kWh 1155 kWh £808 £116 £923 £13,389 14.5 yrs £5,073
6 kW 5135 kWh 3749 kWh 1387 kWh £969 £139 £1,108 £15,017 13.6 yrs £7,138
7 kW 5991 kWh 4374 kWh 1618 kWh £1,131 £162 £1,292 £16,644 12.9 yrs £9,202
8 kW 6847 kWh 4998 kWh 1849 kWh £1,292 £185 £1,477 £18,272 12.4 yrs £11,267

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: £937, Upfront: £15,139, 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 1712 kWh 1284 kWh 428 kWh £332 £43 £375 £10,256 27.4 yrs £-2,762
3 kW 2568 kWh 1926 kWh 642 kWh £498 £64 £562 £11,883 21.1 yrs £-643
4 kW 3424 kWh 2568 kWh 856 kWh £664 £86 £749 £13,511 18.0 yrs £1,475
5 kW 4279 kWh 3210 kWh 1070 kWh £830 £107 £937 £15,139 16.2 yrs £3,594
6 kW 5135 kWh 3851 kWh 1284 kWh £996 £128 £1,124 £16,767 14.9 yrs £5,713
7 kW 5991 kWh 4493 kWh 1498 kWh £1,162 £150 £1,311 £18,394 14.0 yrs £7,832
8 kW 6847 kWh 5135 kWh 1712 kWh £1,327 £171 £1,499 £20,022 13.4 yrs £9,951

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: £950, Upfront: £17,589, Break-even: 18.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1712 kWh 1318 kWh 394 kWh £341 £39 £380 £12,706 33.4 yrs £-5,104
3 kW 2568 kWh 1977 kWh 591 kWh £511 £59 £570 £14,333 25.1 yrs £-2,931
4 kW 3424 kWh 2636 kWh 787 kWh £681 £79 £760 £15,961 21.0 yrs £-758
5 kW 4279 kWh 3295 kWh 984 kWh £852 £98 £950 £17,589 18.5 yrs £1,416
6 kW 5135 kWh 3954 kWh 1181 kWh £1,022 £118 £1,140 £19,217 16.9 yrs £3,589
7 kW 5991 kWh 4613 kWh 1378 kWh £1,193 £138 £1,330 £20,844 15.7 yrs £5,762
8 kW 6847 kWh 5272 kWh 1575 kWh £1,363 £157 £1,520 £22,472 14.8 yrs £7,935

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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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for KA25

Figures below are tailored to KA25 — click through for full league tables.

Solar Payback Index Rank #2334 of 2996
11.6 years (UK avg 10.8 years)
~£839 /yr • £9,767 upfront
Standing-Charge Drag Rank #1854 of 2996
27.9% (UK avg 26.6%) drag on savings
£234 fixed • ~£839 /yr value
Aspect Penalty View ranking →
East −19.1% West −21.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA25

Monthly generation per kilowatt of solar panels

kWh 23 Jan 39 Feb 73 Mar 106 Apr 118 May 114 Jun 113 Jul 99 Aug 74 Sep 50 Oct 30 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 36.7% 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 26 kWh per month; the average month produces around 71 kWh. So a typical 4 kW home system would generate roughly 105 kWh in winter, or 285 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
856kWh/kW
A 1 kW system generates ~856 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

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)
≈1.7 km away
Local sunshine: ~878 kWh/kWp · +3% vs KA25
KA15 (North Ayrshire)
≈3.5 km away
Local sunshine: ~847 kWh/kWp · -1% vs KA25
KA24 (North Ayrshire)
≈5.3 km away
Local sunshine: ~892 kWh/kWp · +4% vs KA25
PA12 (Renfrewshire)
≈6.2 km away
Local sunshine: ~848 kWh/kWp · -1% vs KA25
PA9 (Renfrewshire)
≈10.4 km away
Local sunshine: ~825 kWh/kWp · -4% vs KA25
KA29 (North Ayrshire)
≈10.4 km away
Local sunshine: ~845 kWh/kWp · -1% vs KA25

Similar sunshine across the UK

M11 (Manchester)
~856 kWh/kWp · -0% vs KA25
M18 (Manchester)
~856 kWh/kWp · -0% vs KA25
M9 (Manchester)
~856 kWh/kWp · -0% vs KA25