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Solar panel cost in East Ayrshire (KA3)

See realistic solar installation costs, savings and payback for KA3 (East 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
11.7 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£834
What you save every year
Profit Over 25 Years
£11,081
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 851 kWh/kW — 1 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 851 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)
851 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: £695, Upfront: £8,139, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1701 kWh 680 kWh 1021 kWh £176 £102 £278 £3,256 11.7 yrs £2,304
3 kW 2552 kWh 1021 kWh 1531 kWh £264 £153 £417 £4,883 11.7 yrs £3,456
4 kW 3402 kWh 1361 kWh 2041 kWh £352 £204 £556 £6,511 11.7 yrs £4,608
5 kW 4253 kWh 1701 kWh 2552 kWh £440 £255 £695 £8,139 11.7 yrs £5,760
6 kW 5103 kWh 2041 kWh 3062 kWh £528 £306 £834 £9,767 11.7 yrs £6,912
7 kW 5954 kWh 2382 kWh 3572 kWh £616 £357 £973 £11,394 11.7 yrs £8,064
8 kW 6805 kWh 2722 kWh 4083 kWh £704 £408 £1,112 £13,022 11.7 yrs £9,215

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: £830, 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 1701 kWh 1021 kWh 680 kWh £264 £68 £332 £5,356 16.1 yrs £1,282
3 kW 2552 kWh 1531 kWh 1021 kWh £396 £102 £498 £6,983 14.0 yrs £2,974
4 kW 3402 kWh 2041 kWh 1361 kWh £528 £136 £664 £8,611 13.0 yrs £4,665
5 kW 4253 kWh 2552 kWh 1701 kWh £660 £170 £830 £10,239 12.3 yrs £6,356
6 kW 5103 kWh 3062 kWh 2041 kWh £792 £204 £996 £11,867 11.9 yrs £8,047
7 kW 5954 kWh 3572 kWh 2382 kWh £923 £238 £1,162 £13,494 11.6 yrs £9,738
8 kW 6805 kWh 4083 kWh 2722 kWh £1,055 £272 £1,328 £15,122 11.4 yrs £11,430

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: £897, Upfront: £11,639, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1701 kWh 1191 kWh 510 kWh £308 £51 £359 £6,756 18.8 yrs £422
3 kW 2552 kWh 1786 kWh 766 kWh £462 £77 £538 £8,383 15.6 yrs £2,383
4 kW 3402 kWh 2382 kWh 1021 kWh £616 £102 £718 £10,011 13.9 yrs £4,343
5 kW 4253 kWh 2977 kWh 1276 kWh £770 £128 £897 £11,639 13.0 yrs £6,304
6 kW 5103 kWh 3572 kWh 1531 kWh £923 £153 £1,077 £13,267 12.3 yrs £8,265
7 kW 5954 kWh 4168 kWh 1786 kWh £1,077 £179 £1,256 £14,894 11.9 yrs £10,226
8 kW 6805 kWh 4763 kWh 2041 kWh £1,231 £204 £1,435 £16,522 11.5 yrs £12,187

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: £917, Upfront: £13,389, Break-even: 14.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1701 kWh 1242 kWh 459 kWh £321 £46 £367 £8,506 23.2 yrs £-1,167
3 kW 2552 kWh 1863 kWh 689 kWh £482 £69 £550 £10,133 18.4 yrs £875
4 kW 3402 kWh 2484 kWh 919 kWh £642 £92 £734 £11,761 16.0 yrs £2,917
5 kW 4253 kWh 3105 kWh 1148 kWh £803 £115 £917 £13,389 14.6 yrs £4,959
6 kW 5103 kWh 3726 kWh 1378 kWh £963 £138 £1,101 £15,017 13.6 yrs £7,000
7 kW 5954 kWh 4346 kWh 1608 kWh £1,124 £161 £1,284 £16,644 13.0 yrs £9,042
8 kW 6805 kWh 4967 kWh 1837 kWh £1,284 £184 £1,468 £18,272 12.4 yrs £11,084

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: £931, Upfront: £15,139, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1701 kWh 1276 kWh 425 kWh £330 £43 £372 £10,256 27.5 yrs £-2,809
3 kW 2552 kWh 1914 kWh 638 kWh £495 £64 £559 £11,883 21.3 yrs £-713
4 kW 3402 kWh 2552 kWh 851 kWh £660 £85 £745 £13,511 18.1 yrs £1,383
5 kW 4253 kWh 3190 kWh 1063 kWh £825 £106 £931 £15,139 16.3 yrs £3,478
6 kW 5103 kWh 3828 kWh 1276 kWh £989 £128 £1,117 £16,767 15.0 yrs £5,574
7 kW 5954 kWh 4466 kWh 1489 kWh £1,154 £149 £1,303 £18,394 14.1 yrs £7,670
8 kW 6805 kWh 5103 kWh 1701 kWh £1,319 £170 £1,489 £20,022 13.4 yrs £9,765

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: £944, Upfront: £17,589, Break-even: 18.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1701 kWh 1310 kWh 391 kWh £339 £39 £378 £12,706 33.6 yrs £-5,151
3 kW 2552 kWh 1965 kWh 587 kWh £508 £59 £567 £14,333 25.3 yrs £-3,001
4 kW 3402 kWh 2620 kWh 783 kWh £677 £78 £755 £15,961 21.1 yrs £-852
5 kW 4253 kWh 3275 kWh 978 kWh £847 £98 £944 £17,589 18.6 yrs £1,298
6 kW 5103 kWh 3930 kWh 1174 kWh £1,016 £117 £1,133 £19,217 17.0 yrs £3,447
7 kW 5954 kWh 4585 kWh 1369 kWh £1,185 £137 £1,322 £20,844 15.8 yrs £5,597
8 kW 6805 kWh 5240 kWh 1565 kWh £1,354 £157 £1,511 £22,472 14.9 yrs £7,747

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 East 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 KA3

Figures below are tailored to KA3 — click through for full league tables.

Solar Payback Index Rank #2370 of 2996
11.7 years (UK avg 10.8 years)
~£834 /yr • £9,767 upfront
Standing-Charge Drag Rank #1879 of 2996
28.1% (UK avg 26.6%) drag on savings
£234 fixed • ~£834 /yr value
Aspect Penalty View ranking →
East −19.4% West −20.4%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA3

Monthly generation per kilowatt of solar panels

kWh 22 Jan 40 Feb 72 Mar 104 Apr 118 May 111 Jun 110 Jul 98 Aug 73 Sep 50 Oct 33 Nov 19 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 38.2% 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 27 kWh per month; the average month produces around 71 kWh. So a typical 4 kW home system would generate roughly 108 kWh in winter, or 284 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
851kWh/kW
A 1 kW system generates ~851 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

East Ayrshire (99%)|North Ayrshire (1%)

Areas Covered

Annick, Kilmarnock East and Hurlford, Kilmarnock North, Kilmarnock West and Crosshouse, Irvine East, 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

KA1 (East Ayrshire)
≈3.6 km away
Local sunshine: ~866 kWh/kWp · +2% vs KA3
KA2 (East Ayrshire)
≈5.1 km away
Local sunshine: ~865 kWh/kWp · +2% vs KA3
KA4 (East Ayrshire)
≈8.0 km away
Local sunshine: ~814 kWh/kWp · -4% vs KA3
KA11 (North Ayrshire)
≈8.6 km away
Local sunshine: ~890 kWh/kWp · +5% vs KA3
KA12 (North Ayrshire)
≈10.9 km away
Local sunshine: ~897 kWh/kWp · +5% vs KA3
KA16 (East Ayrshire)
≈11.0 km away
Local sunshine: ~803 kWh/kWp · -6% vs KA3

Similar sunshine across the UK

SK22 (High Peak)
~850 kWh/kWp · -0% vs KA3
SK2 (Stockport)
~851 kWh/kWp · +0% vs KA3
BB94 (Pendle)
~850 kWh/kWp · -0% vs KA3