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Solar panel cost in North Ayrshire (KA28)

See realistic solar installation costs, savings and payback for KA28 (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
11.4 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£713
What you save every year
Profit Over 25 Years
£9,676
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 Northern Scotland, the current unit rate is 26.42p/kWh with a 57.55p/day standing charge. Your postcode’s south-facing sunshine yield is 860 kWh/kW — 45 above the regional median (815).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 860 kWh per year on a south-facing roof. We value self-used electricity at 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
57.5p/day
Sunshine yield (south)
860 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: £713, Upfront: £8,139, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1720 kWh 688 kWh 1032 kWh £182 £103 £285 £3,256 11.4 yrs £2,445
3 kW 2581 kWh 1032 kWh 1548 kWh £273 £155 £428 £4,883 11.4 yrs £3,668
4 kW 3441 kWh 1376 kWh 2064 kWh £364 £206 £570 £6,511 11.4 yrs £4,890
5 kW 4301 kWh 1720 kWh 2581 kWh £455 £258 £713 £8,139 11.4 yrs £6,113
6 kW 5161 kWh 2064 kWh 3097 kWh £545 £310 £855 £9,767 11.4 yrs £7,335
7 kW 6021 kWh 2409 kWh 3613 kWh £636 £361 £998 £11,394 11.4 yrs £8,558
8 kW 6882 kWh 2753 kWh 4129 kWh £727 £413 £1,140 £13,022 11.4 yrs £9,781

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: £854, Upfront: £10,239, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1720 kWh 1032 kWh 688 kWh £273 £69 £342 £5,356 15.7 yrs £1,475
3 kW 2581 kWh 1548 kWh 1032 kWh £409 £103 £512 £6,983 13.6 yrs £3,263
4 kW 3441 kWh 2064 kWh 1376 kWh £545 £138 £683 £8,611 12.6 yrs £5,050
5 kW 4301 kWh 2581 kWh 1720 kWh £682 £172 £854 £10,239 12.0 yrs £6,838
6 kW 5161 kWh 3097 kWh 2064 kWh £818 £206 £1,025 £11,867 11.6 yrs £8,625
7 kW 6021 kWh 3613 kWh 2409 kWh £955 £241 £1,195 £13,494 11.3 yrs £10,413
8 kW 6882 kWh 4129 kWh 2753 kWh £1,091 £275 £1,366 £15,122 11.1 yrs £12,200

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: £924, Upfront: £11,639, 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 1720 kWh 1204 kWh 516 kWh £318 £52 £370 £6,756 18.3 yrs £640
3 kW 2581 kWh 1806 kWh 774 kWh £477 £77 £555 £8,383 15.1 yrs £2,710
4 kW 3441 kWh 2409 kWh 1032 kWh £636 £103 £740 £10,011 13.5 yrs £4,780
5 kW 4301 kWh 3011 kWh 1290 kWh £795 £129 £924 £11,639 12.6 yrs £6,850
6 kW 5161 kWh 3613 kWh 1548 kWh £955 £155 £1,109 £13,267 12.0 yrs £8,920
7 kW 6021 kWh 4215 kWh 1806 kWh £1,114 £181 £1,294 £14,894 11.5 yrs £10,990
8 kW 6882 kWh 4817 kWh 2064 kWh £1,273 £206 £1,479 £16,522 11.2 yrs £13,060

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: £946, Upfront: £13,389, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1720 kWh 1256 kWh 465 kWh £332 £46 £378 £8,506 22.5 yrs £-940
3 kW 2581 kWh 1884 kWh 697 kWh £498 £70 £567 £10,133 17.9 yrs £1,214
4 kW 3441 kWh 2512 kWh 929 kWh £664 £93 £757 £11,761 15.5 yrs £3,369
5 kW 4301 kWh 3140 kWh 1161 kWh £830 £116 £946 £13,389 14.2 yrs £5,524
6 kW 5161 kWh 3768 kWh 1394 kWh £995 £139 £1,135 £15,017 13.2 yrs £7,679
7 kW 6021 kWh 4396 kWh 1626 kWh £1,161 £163 £1,324 £16,644 12.6 yrs £9,833
8 kW 6882 kWh 5024 kWh 1858 kWh £1,327 £186 £1,513 £18,272 12.1 yrs £11,988

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: £960, Upfront: £15,139, Break-even: 15.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1720 kWh 1290 kWh 430 kWh £341 £43 £384 £10,256 26.7 yrs £-2,577
3 kW 2581 kWh 1935 kWh 645 kWh £511 £65 £576 £11,883 20.6 yrs £-366
4 kW 3441 kWh 2581 kWh 860 kWh £682 £86 £768 £13,511 17.6 yrs £1,845
5 kW 4301 kWh 3226 kWh 1075 kWh £852 £108 £960 £15,139 15.8 yrs £4,056
6 kW 5161 kWh 3871 kWh 1290 kWh £1,023 £129 £1,152 £16,767 14.6 yrs £6,268
7 kW 6021 kWh 4516 kWh 1505 kWh £1,193 £151 £1,344 £18,394 13.7 yrs £8,479
8 kW 6882 kWh 5161 kWh 1720 kWh £1,364 £172 £1,536 £20,022 13.0 yrs £10,690

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: £974, Upfront: £17,589, Break-even: 18.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1720 kWh 1325 kWh 396 kWh £350 £40 £390 £12,706 32.6 yrs £-4,914
3 kW 2581 kWh 1987 kWh 594 kWh £525 £59 £584 £14,333 24.5 yrs £-2,647
4 kW 3441 kWh 2649 kWh 791 kWh £700 £79 £779 £15,961 20.5 yrs £-379
5 kW 4301 kWh 3312 kWh 989 kWh £875 £99 £974 £17,589 18.1 yrs £1,889
6 kW 5161 kWh 3974 kWh 1187 kWh £1,050 £119 £1,169 £19,217 16.4 yrs £4,157
7 kW 6021 kWh 4636 kWh 1385 kWh £1,225 £138 £1,363 £20,844 15.3 yrs £6,424
8 kW 6882 kWh 5299 kWh 1583 kWh £1,400 £158 £1,558 £22,472 14.4 yrs £8,692

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 KA28

Figures below are tailored to KA28 — click through for full league tables.

Solar Payback Index Rank #2770 of 2996
12.8 years (UK avg 10.8 years)
~£570 /yr • £7,307 upfront
Standing-Charge Drag Rank #2694 of 2996
36.8% (UK avg 26.6%) drag on savings
£210 fixed • ~£570 /yr value
Aspect Penalty View ranking →
East −19.8% West −22.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA28

Monthly generation per kilowatt of solar panels

kWh 22 Jan 39 Feb 73 Mar 108 Apr 121 May 115 Jun 113 Jul 100 Aug 74 Sep 50 Oct 29 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 36.2% 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 72 kWh. So a typical 4 kW home system would generate roughly 104 kWh in winter, or 287 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/day
Local Sunshine
860kWh/kW
A 1 kW system generates ~860 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
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

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 Northern Scotland

PA20 (Argyll and Bute)
≈12.3 km away
Local sunshine: ~841 kWh/kWp · -2% vs KA28
PA23 (Argyll and Bute)
≈22.2 km away
Local sunshine: ~789 kWh/kWp · -8% vs KA28
PA21 (Argyll and Bute)
≈25.9 km away
Local sunshine: ~844 kWh/kWp · -2% vs KA28
PA22 (Argyll and Bute)
≈26.1 km away
Local sunshine: ~766 kWh/kWp · -11% vs KA28
KA27 (North Ayrshire)
≈27.5 km away
Local sunshine: ~879 kWh/kWp · +2% vs KA28
PA29 (Argyll and Bute)
≈33.0 km away
Local sunshine: ~820 kWh/kWp · -5% vs KA28

Similar sunshine across the UK

FK1 (Falkirk)
~860 kWh/kWp · +0% vs KA28
BB6 (Ribble Valley)
~860 kWh/kWp · -0% vs KA28
BT54 (Causeway Coast and Glens)
~860 kWh/kWp · -0% vs KA28