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Solar panel cost in South Ayrshire (KA8)

See realistic solar installation costs, savings and payback for KA8 (South 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
15.2 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£804
What you save every year
Profit Over 25 Years
£7,900
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: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • 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

Costs: Battery prices are typically £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 22.82p/kWh with a 64.81p/day standing charge. Your postcode’s south-facing sunshine yield is 886 kWh/kW — 36 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 886 kWh per year on a south-facing roof. We value self-used electricity at 22.8p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
22.8p/kWh
Standing charge
64.8p/day
Sunshine yield (south)
886 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: £670, Upfront: £10,173, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 709 kWh 1063 kWh £162 £106 £268 £4,069 15.2 yrs £1,293
3 kW 2658 kWh 1063 kWh 1595 kWh £243 £159 £402 £6,104 15.2 yrs £1,939
4 kW 3544 kWh 1418 kWh 2127 kWh £324 £213 £536 £8,138 15.2 yrs £2,586
5 kW 4430 kWh 1772 kWh 2658 kWh £404 £266 £670 £10,173 15.2 yrs £3,232
6 kW 5317 kWh 2127 kWh 3190 kWh £485 £319 £804 £12,207 15.2 yrs £3,879
7 kW 6203 kWh 2481 kWh 3722 kWh £566 £372 £938 £14,242 15.2 yrs £4,525
8 kW 7089 kWh 2836 kWh 4253 kWh £647 £425 £1,072 £16,276 15.2 yrs £5,172

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £784, Upfront: £12,273, Break-even: 15.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1063 kWh 709 kWh £243 £71 £314 £6,169 19.7 yrs £102
3 kW 2658 kWh 1595 kWh 1063 kWh £364 £106 £470 £8,204 17.4 yrs £1,203
4 kW 3544 kWh 2127 kWh 1418 kWh £485 £142 £627 £10,238 16.3 yrs £2,303
5 kW 4430 kWh 2658 kWh 1772 kWh £607 £177 £784 £12,273 15.7 yrs £3,404
6 kW 5317 kWh 3190 kWh 2127 kWh £728 £213 £941 £14,307 15.2 yrs £4,505
7 kW 6203 kWh 3722 kWh 2481 kWh £849 £248 £1,097 £16,342 14.9 yrs £5,606
8 kW 7089 kWh 4253 kWh 2836 kWh £971 £284 £1,254 £18,376 14.7 yrs £6,707

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £841, Upfront: £13,673, 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 1772 kWh 1241 kWh 532 kWh £283 £53 £336 £7,569 22.5 yrs £-844
3 kW 2658 kWh 1861 kWh 797 kWh £425 £80 £504 £9,604 19.0 yrs £484
4 kW 3544 kWh 2481 kWh 1063 kWh £566 £106 £673 £11,638 17.3 yrs £1,812
5 kW 4430 kWh 3101 kWh 1329 kWh £708 £133 £841 £13,673 16.3 yrs £3,140
6 kW 5317 kWh 3722 kWh 1595 kWh £849 £159 £1,009 £15,707 15.6 yrs £4,468
7 kW 6203 kWh 4342 kWh 1861 kWh £991 £186 £1,177 £17,742 15.1 yrs £5,796
8 kW 7089 kWh 4962 kWh 2127 kWh £1,132 £213 £1,345 £19,776 14.7 yrs £7,124

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £858, Upfront: £15,423, Break-even: 18.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1294 kWh 478 kWh £295 £48 £343 £9,319 27.2 yrs £-2,458
3 kW 2658 kWh 1941 kWh 718 kWh £443 £72 £515 £11,354 22.1 yrs £-1,061
4 kW 3544 kWh 2587 kWh 957 kWh £590 £96 £686 £13,388 19.5 yrs £335
5 kW 4430 kWh 3234 kWh 1196 kWh £738 £120 £858 £15,423 18.0 yrs £1,731
6 kW 5317 kWh 3881 kWh 1435 kWh £886 £144 £1,029 £17,457 17.0 yrs £3,127
7 kW 6203 kWh 4528 kWh 1675 kWh £1,033 £167 £1,201 £19,492 16.2 yrs £4,524
8 kW 7089 kWh 5175 kWh 1914 kWh £1,181 £191 £1,372 £21,526 15.7 yrs £5,920

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £869, Upfront: £17,173, Break-even: 19.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1329 kWh 443 kWh £303 £44 £348 £11,069 31.8 yrs £-4,117
3 kW 2658 kWh 1994 kWh 665 kWh £455 £66 £521 £13,104 25.1 yrs £-2,675
4 kW 3544 kWh 2658 kWh 886 kWh £607 £89 £695 £15,138 21.8 yrs £-1,233
5 kW 4430 kWh 3323 kWh 1108 kWh £758 £111 £869 £17,173 19.8 yrs £208
6 kW 5317 kWh 3987 kWh 1329 kWh £910 £133 £1,043 £19,207 18.4 yrs £1,650
7 kW 6203 kWh 4652 kWh 1551 kWh £1,062 £155 £1,217 £21,242 17.5 yrs £3,092
8 kW 7089 kWh 5317 kWh 1772 kWh £1,213 £177 £1,390 £23,276 16.7 yrs £4,533

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £880, Upfront: £19,623, Break-even: 22.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1365 kWh 408 kWh £311 £41 £352 £13,519 38.4 yrs £-6,476
3 kW 2658 kWh 2047 kWh 611 kWh £467 £61 £528 £15,554 29.4 yrs £-4,989
4 kW 3544 kWh 2729 kWh 815 kWh £623 £82 £704 £17,588 25.0 yrs £-3,502
5 kW 4430 kWh 3411 kWh 1019 kWh £779 £102 £880 £19,623 22.3 yrs £-2,015
6 kW 5317 kWh 4094 kWh 1223 kWh £934 £122 £1,056 £21,657 20.5 yrs £-527
7 kW 6203 kWh 4776 kWh 1427 kWh £1,090 £143 £1,233 £23,692 19.2 yrs £960
8 kW 7089 kWh 5458 kWh 1630 kWh £1,246 £163 £1,409 £25,726 18.3 yrs £2,447

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, 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.

Insights for KA8

Figures below are tailored to KA8 — click through for full league tables.

Solar Payback Index Rank #2510 of 2997
13.6 years (UK avg 12.6 years)
~£897 /yr • £12,207 upfront
Standing-Charge Drag Rank #1544 of 2997
23.4% (UK avg 24.6%) drag on savings
£210 fixed • ~£897 /yr value
Aspect Penalty View ranking →
East −20.5% West −21.7%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KA8

Monthly generation per kilowatt of solar panels

kWh 23 Jan 42 Feb 76 Mar 109 Apr 123 May 115 Jun 114 Jul 102 Aug 77 Sep 52 Oct 33 Nov 19 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 38.4% 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 113 kWh in winter, or 295 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
22.82p/kWh
Daily Fixed Charge
64.81p/day
Local Sunshine
886kWh/kW
A 1 kW system generates ~886 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

South Ayrshire (100%)

Areas Covered

Ayr North, Ayr West, Prestwick

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q1 2026

Installation costs: MCS certified installer data, March 2025

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

KA7 (South Ayrshire)
≈2.2 km away
Local sunshine: ~885 kWh/kWp · -0% vs KA8
KA9 (South Ayrshire)
≈3.1 km away
Local sunshine: ~889 kWh/kWp · +0% vs KA8
KA6 (East Ayrshire)
≈7.5 km away
Local sunshine: ~879 kWh/kWp · -1% vs KA8
KA10 (South Ayrshire)
≈8.9 km away
Local sunshine: ~883 kWh/kWp · -0% vs KA8
KA19 (South Ayrshire)
≈13.7 km away
Local sunshine: ~877 kWh/kWp · -1% vs KA8
KA2 (East Ayrshire)
≈14.8 km away
Local sunshine: ~865 kWh/kWp · -2% vs KA8

Similar sunshine across the UK

SA40 (Carmarthenshire)
~886 kWh/kWp · -0% vs KA8
LL33 (Conwy)
~886 kWh/kWp · +0% vs KA8
PH13 (Perth and Kinross)
~886 kWh/kWp · -0% vs KA8