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Solar panel cost in East Ayrshire (KA4)

See realistic solar installation costs, savings and payback for KA4 (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
14.8 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£824
What you save every year
Profit Over 25 Years
£8,401
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 27.18p/kWh with a 57.62p/day standing charge. Your postcode’s south-facing sunshine yield is 814 kWh/kW — 35 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 814 kWh per year on a south-facing roof. We value self-used electricity at 27.2p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.2p/kWh
Standing charge
57.6p/day
Sunshine yield (south)
814 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: £687, Upfront: £10,173, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1629 kWh 651 kWh 977 kWh £177 £98 £275 £4,069 14.8 yrs £1,426
3 kW 2443 kWh 977 kWh 1466 kWh £266 £147 £412 £6,104 14.8 yrs £2,140
4 kW 3257 kWh 1303 kWh 1954 kWh £354 £195 £550 £8,138 14.8 yrs £2,853
5 kW 4071 kWh 1629 kWh 2443 kWh £443 £244 £687 £10,173 14.8 yrs £3,566
6 kW 4886 kWh 1954 kWh 2931 kWh £531 £293 £824 £12,207 14.8 yrs £4,279
7 kW 5700 kWh 2280 kWh 3420 kWh £620 £342 £962 £14,242 14.8 yrs £4,993
8 kW 6514 kWh 2606 kWh 3909 kWh £708 £391 £1,099 £16,276 14.8 yrs £5,706

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: £827, Upfront: £12,273, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1629 kWh 977 kWh 651 kWh £266 £65 £331 £6,169 18.7 yrs £446
3 kW 2443 kWh 1466 kWh 977 kWh £398 £98 £496 £8,204 16.5 yrs £1,718
4 kW 3257 kWh 1954 kWh 1303 kWh £531 £130 £661 £10,238 15.5 yrs £2,991
5 kW 4071 kWh 2443 kWh 1629 kWh £664 £163 £827 £12,273 14.8 yrs £4,264
6 kW 4886 kWh 2931 kWh 1954 kWh £797 £195 £992 £14,307 14.4 yrs £5,537
7 kW 5700 kWh 3420 kWh 2280 kWh £930 £228 £1,158 £16,342 14.1 yrs £6,810
8 kW 6514 kWh 3909 kWh 2606 kWh £1,062 £261 £1,323 £18,376 13.9 yrs £8,082

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: £897, Upfront: £13,673, 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 1629 kWh 1140 kWh 489 kWh £310 £49 £359 £7,569 21.1 yrs £-395
3 kW 2443 kWh 1710 kWh 733 kWh £465 £73 £538 £9,604 17.8 yrs £1,158
4 kW 3257 kWh 2280 kWh 977 kWh £620 £98 £717 £11,638 16.2 yrs £2,710
5 kW 4071 kWh 2850 kWh 1221 kWh £775 £122 £897 £13,673 15.2 yrs £4,263
6 kW 4886 kWh 3420 kWh 1466 kWh £930 £147 £1,076 £15,707 14.6 yrs £5,816
7 kW 5700 kWh 3990 kWh 1710 kWh £1,084 £171 £1,255 £17,742 14.1 yrs £7,368
8 kW 6514 kWh 4560 kWh 1954 kWh £1,239 £195 £1,435 £19,776 13.8 yrs £8,921

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: £918, Upfront: £15,423, Break-even: 16.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1629 kWh 1189 kWh 440 kWh £323 £44 £367 £9,319 25.4 yrs £-1,977
3 kW 2443 kWh 1783 kWh 660 kWh £485 £66 £551 £11,354 20.6 yrs £-340
4 kW 3257 kWh 2378 kWh 879 kWh £646 £88 £734 £13,388 18.2 yrs £1,296
5 kW 4071 kWh 2972 kWh 1099 kWh £808 £110 £918 £15,423 16.8 yrs £2,933
6 kW 4886 kWh 3567 kWh 1319 kWh £969 £132 £1,101 £17,457 15.9 yrs £4,569
7 kW 5700 kWh 4161 kWh 1539 kWh £1,131 £154 £1,285 £19,492 15.2 yrs £6,206
8 kW 6514 kWh 4755 kWh 1759 kWh £1,293 £176 £1,468 £21,526 14.7 yrs £7,842

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: £932, Upfront: £17,173, Break-even: 18.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1629 kWh 1221 kWh 407 kWh £332 £41 £373 £11,069 29.7 yrs £-3,615
3 kW 2443 kWh 1832 kWh 611 kWh £498 £61 £559 £13,104 23.4 yrs £-1,923
4 kW 3257 kWh 2443 kWh 814 kWh £664 £81 £745 £15,138 20.3 yrs £-230
5 kW 4071 kWh 3054 kWh 1018 kWh £830 £102 £932 £17,173 18.4 yrs £1,462
6 kW 4886 kWh 3664 kWh 1221 kWh £996 £122 £1,118 £19,207 17.2 yrs £3,155
7 kW 5700 kWh 4275 kWh 1425 kWh £1,162 £143 £1,304 £21,242 16.3 yrs £4,847
8 kW 6514 kWh 4886 kWh 1629 kWh £1,328 £163 £1,491 £23,276 15.6 yrs £6,540

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: £946, Upfront: £19,623, Break-even: 20.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1629 kWh 1254 kWh 375 kWh £341 £37 £378 £13,519 35.7 yrs £-5,953
3 kW 2443 kWh 1881 kWh 562 kWh £511 £56 £567 £15,554 27.4 yrs £-4,205
4 kW 3257 kWh 2508 kWh 749 kWh £682 £75 £757 £17,588 23.2 yrs £-2,456
5 kW 4071 kWh 3135 kWh 936 kWh £852 £94 £946 £19,623 20.7 yrs £-708
6 kW 4886 kWh 3762 kWh 1124 kWh £1,023 £112 £1,135 £21,657 19.1 yrs £1,041
7 kW 5700 kWh 4389 kWh 1311 kWh £1,193 £131 £1,324 £23,692 17.9 yrs £2,789
8 kW 6514 kWh 5016 kWh 1498 kWh £1,363 £150 £1,513 £25,726 17.0 yrs £4,538

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 KA4

Figures below are tailored to KA4 — click through for full league tables.

Solar Payback Index Rank #2884 of 2997
14.8 years (UK avg 12.6 years)
~£824 /yr • £12,207 upfront
Standing-Charge Drag Rank #2009 of 2997
25.5% (UK avg 24.6%) drag on savings
£210 fixed • ~£824 /yr value
Aspect Penalty View ranking →
East −18.3% West −19.6%
Typical output loss versus a south-facing roof (lower is better)

Your Area at a Glance

Your Electricity Rate
27.18p/kWh
Daily Fixed Charge
57.62p/day
Local Sunshine
814kWh/kW
A 1 kW system generates ~814 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, Annick, Ballochmyle, Kilmarnock West and Crosshouse

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

KA16 (East Ayrshire)
≈3.6 km away
Local sunshine: ~803 kWh/kWp · -1% vs KA4
KA17 (East Ayrshire)
≈6.4 km away
Local sunshine: ~813 kWh/kWp · -0% vs KA4
KA1 (East Ayrshire)
≈7.2 km away
Local sunshine: ~866 kWh/kWp · +6% vs KA4
KA3 (East Ayrshire)
≈8.0 km away
Local sunshine: ~851 kWh/kWp · +4% vs KA4
KA5 (East Ayrshire)
≈9.7 km away
Local sunshine: ~847 kWh/kWp · +4% vs KA4
KA2 (East Ayrshire)
≈10.9 km away
Local sunshine: ~865 kWh/kWp · +6% vs KA4

Similar sunshine across the UK

IV20 (Highland)
~814 kWh/kWp · -0% vs KA4
KW6 (Highland)
~814 kWh/kWp · -0% vs KA4
OL3 (Oldham)
~815 kWh/kWp · +0% vs KA4