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Solar panel cost in East Ayrshire (KA17)

See realistic solar installation costs, savings and payback for KA17 (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
12.3 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£797
What you save every year
Profit Over 25 Years
£10,155
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 813 kWh/kW — 37 below 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 813 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)
813 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: £664, Upfront: £8,139, 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 1626 kWh 650 kWh 975 kWh £168 £98 £266 £3,256 12.3 yrs £2,057
3 kW 2438 kWh 975 kWh 1463 kWh £252 £146 £398 £4,883 12.3 yrs £3,085
4 kW 3251 kWh 1300 kWh 1951 kWh £336 £195 £531 £6,511 12.3 yrs £4,114
5 kW 4064 kWh 1626 kWh 2438 kWh £420 £244 £664 £8,139 12.3 yrs £5,142
6 kW 4877 kWh 1951 kWh 2926 kWh £504 £293 £797 £9,767 12.3 yrs £6,171
7 kW 5690 kWh 2276 kWh 3414 kWh £588 £341 £930 £11,394 12.3 yrs £7,199
8 kW 6502 kWh 2601 kWh 3901 kWh £672 £390 £1,062 £13,022 12.3 yrs £8,228

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: £793, Upfront: £10,239, 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 1626 kWh 975 kWh 650 kWh £252 £65 £317 £5,356 16.9 yrs £987
3 kW 2438 kWh 1463 kWh 975 kWh £378 £98 £476 £6,983 14.7 yrs £2,531
4 kW 3251 kWh 1951 kWh 1300 kWh £504 £130 £634 £8,611 13.6 yrs £4,075
5 kW 4064 kWh 2438 kWh 1626 kWh £630 £163 £793 £10,239 12.9 yrs £5,619
6 kW 4877 kWh 2926 kWh 1951 kWh £756 £195 £951 £11,867 12.5 yrs £7,162
7 kW 5690 kWh 3414 kWh 2276 kWh £882 £228 £1,110 £13,494 12.2 yrs £8,706
8 kW 6502 kWh 3901 kWh 2601 kWh £1,009 £260 £1,269 £15,122 11.9 yrs £10,250

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: £857, Upfront: £11,639, Break-even: 13.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1626 kWh 1138 kWh 488 kWh £294 £49 £343 £6,756 19.7 yrs £103
3 kW 2438 kWh 1707 kWh 732 kWh £441 £73 £514 £8,383 16.3 yrs £1,904
4 kW 3251 kWh 2276 kWh 975 kWh £588 £98 £686 £10,011 14.6 yrs £3,706
5 kW 4064 kWh 2845 kWh 1219 kWh £735 £122 £857 £11,639 13.6 yrs £5,507
6 kW 4877 kWh 3414 kWh 1463 kWh £882 £146 £1,029 £13,267 12.9 yrs £7,308
7 kW 5690 kWh 3983 kWh 1707 kWh £1,030 £171 £1,200 £14,894 12.4 yrs £9,110
8 kW 6502 kWh 4552 kWh 1951 kWh £1,177 £195 £1,372 £16,522 12.0 yrs £10,911

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: £877, Upfront: £13,389, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1626 kWh 1187 kWh 439 kWh £307 £44 £351 £8,506 24.3 yrs £-1,493
3 kW 2438 kWh 1780 kWh 658 kWh £460 £66 £526 £10,133 19.3 yrs £386
4 kW 3251 kWh 2373 kWh 878 kWh £614 £88 £701 £11,761 16.8 yrs £2,265
5 kW 4064 kWh 2967 kWh 1097 kWh £767 £110 £877 £13,389 15.3 yrs £4,143
6 kW 4877 kWh 3560 kWh 1317 kWh £920 £132 £1,052 £15,017 14.3 yrs £6,022
7 kW 5690 kWh 4153 kWh 1536 kWh £1,074 £154 £1,227 £16,644 13.6 yrs £7,901
8 kW 6502 kWh 4747 kWh 1756 kWh £1,227 £176 £1,403 £18,272 13.0 yrs £9,780

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: £889, Upfront: £15,139, Break-even: 17.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1626 kWh 1219 kWh 406 kWh £315 £41 £356 £10,256 28.8 yrs £-3,140
3 kW 2438 kWh 1829 kWh 610 kWh £473 £61 £534 £11,883 22.3 yrs £-1,209
4 kW 3251 kWh 2438 kWh 813 kWh £630 £81 £712 £13,511 19.0 yrs £721
5 kW 4064 kWh 3048 kWh 1016 kWh £788 £102 £889 £15,139 17.0 yrs £2,651
6 kW 4877 kWh 3658 kWh 1219 kWh £945 £122 £1,067 £16,767 15.7 yrs £4,581
7 kW 5690 kWh 4267 kWh 1422 kWh £1,103 £142 £1,245 £18,394 14.8 yrs £6,512
8 kW 6502 kWh 4877 kWh 1626 kWh £1,261 £163 £1,423 £20,022 14.1 yrs £8,442

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: £902, Upfront: £17,589, Break-even: 19.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1626 kWh 1252 kWh 374 kWh £324 £37 £361 £12,706 35.2 yrs £-5,486
3 kW 2438 kWh 1878 kWh 561 kWh £485 £56 £541 £14,333 26.5 yrs £-3,505
4 kW 3251 kWh 2503 kWh 748 kWh £647 £75 £722 £15,961 22.1 yrs £-1,523
5 kW 4064 kWh 3129 kWh 935 kWh £809 £93 £902 £17,589 19.5 yrs £459
6 kW 4877 kWh 3755 kWh 1122 kWh £971 £112 £1,083 £19,217 17.7 yrs £2,441
7 kW 5690 kWh 4381 kWh 1309 kWh £1,132 £131 £1,263 £20,844 16.5 yrs £4,422
8 kW 6502 kWh 5007 kWh 1496 kWh £1,294 £150 £1,444 £22,472 15.6 yrs £6,404

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 KA17

Figures below are tailored to KA17 — click through for full league tables.

Solar Payback Index Rank #2649 of 2996
12.3 years (UK avg 10.8 years)
~£797 /yr • £9,767 upfront
Standing-Charge Drag Rank #2100 of 2996
29.4% (UK avg 26.6%) drag on savings
£234 fixed • ~£797 /yr value
Aspect Penalty View ranking →
East −18.1% West −19.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA17

Monthly generation per kilowatt of solar panels

kWh 21 Jan 37 Feb 69 Mar 101 Apr 113 May 106 Jun 105 Jul 93 Aug 71 Sep 49 Oct 31 Nov 16 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 36.6% 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 25 kWh per month; the average month produces around 68 kWh. So a typical 4 kW home system would generate roughly 99 kWh in winter, or 271 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
25.85p/kWh
Daily Fixed Charge
64.17p/day
Local Sunshine
813kWh/kW
A 1 kW system generates ~813 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 (100%)

Areas Covered

Irvine Valley, Kilmarnock West and Crosshouse, Annick

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

KA16 (East Ayrshire)
≈2.8 km away
Local sunshine: ~803 kWh/kWp · -1% vs KA17
KA4 (East Ayrshire)
≈6.4 km away
Local sunshine: ~814 kWh/kWp · +0% vs KA17
KA5 (East Ayrshire)
≈12.5 km away
Local sunshine: ~847 kWh/kWp · +4% vs KA17
KA1 (East Ayrshire)
≈13.5 km away
Local sunshine: ~866 kWh/kWp · +6% vs KA17
KA3 (East Ayrshire)
≈13.7 km away
Local sunshine: ~851 kWh/kWp · +5% vs KA17
ML10 (South Lanarkshire)
≈15.8 km away
Local sunshine: ~844 kWh/kWp · +4% vs KA17

Similar sunshine across the UK

CA13 (Cumberland)
~812 kWh/kWp · -0% vs KA17
KW14 (Highland)
~813 kWh/kWp · +0% vs KA17
LL48 (Gwynedd)
~812 kWh/kWp · -0% vs KA17