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Solar Panels in KY4 (Fife)

See if solar pays off for you in Fife — price, savings and payback in under a minute (official UK data).

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
13.9 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£878
What you save every year
Profit Over 25 Years
£9,738
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 25.84p/kWh with a 56.55p/day standing charge. Your postcode’s south-facing sunshine yield is 896 kWh/kW — 46 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 896 kWh per year on a south-facing roof. We value self-used electricity at 25.8p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.8p/kWh
Standing charge
56.5p/day
Sunshine yield (south)
896 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: £731, Upfront: £10,173, Break-even: 13.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 716 kWh 1075 kWh £185 £107 £293 £4,069 13.9 yrs £1,783
3 kW 2687 kWh 1075 kWh 1612 kWh £278 £161 £439 £6,104 13.9 yrs £2,674
4 kW 3582 kWh 1433 kWh 2149 kWh £370 £215 £585 £8,138 13.9 yrs £3,566
5 kW 4478 kWh 1791 kWh 2687 kWh £463 £269 £731 £10,173 13.9 yrs £4,457
6 kW 5373 kWh 2149 kWh 3224 kWh £555 £322 £878 £12,207 13.9 yrs £5,349
7 kW 6269 kWh 2508 kWh 3761 kWh £648 £376 £1,024 £14,242 13.9 yrs £6,240
8 kW 7164 kWh 2866 kWh 4299 kWh £741 £430 £1,170 £16,276 13.9 yrs £7,132

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: £873, Upfront: £12,273, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 1075 kWh 716 kWh £278 £72 £349 £6,169 17.7 yrs £818
3 kW 2687 kWh 1612 kWh 1075 kWh £417 £107 £524 £8,204 15.7 yrs £2,277
4 kW 3582 kWh 2149 kWh 1433 kWh £555 £143 £699 £10,238 14.7 yrs £3,736
5 kW 4478 kWh 2687 kWh 1791 kWh £694 £179 £873 £12,273 14.1 yrs £5,194
6 kW 5373 kWh 3224 kWh 2149 kWh £833 £215 £1,048 £14,307 13.7 yrs £6,653
7 kW 6269 kWh 3761 kWh 2508 kWh £972 £251 £1,223 £16,342 13.4 yrs £8,112
8 kW 7164 kWh 4299 kWh 2866 kWh £1,111 £287 £1,397 £18,376 13.2 yrs £9,571

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: £944, Upfront: £13,673, Break-even: 14.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 1254 kWh 537 kWh £324 £54 £378 £7,569 20.0 yrs £-15
3 kW 2687 kWh 1881 kWh 806 kWh £486 £81 £567 £9,604 17.0 yrs £1,728
4 kW 3582 kWh 2508 kWh 1075 kWh £648 £107 £755 £11,638 15.4 yrs £3,470
5 kW 4478 kWh 3134 kWh 1343 kWh £810 £134 £944 £13,673 14.5 yrs £5,213
6 kW 5373 kWh 3761 kWh 1612 kWh £972 £161 £1,133 £15,707 13.9 yrs £6,956
7 kW 6269 kWh 4388 kWh 1881 kWh £1,134 £188 £1,322 £17,742 13.4 yrs £8,698
8 kW 7164 kWh 5015 kWh 2149 kWh £1,296 £215 £1,511 £19,776 13.1 yrs £10,441

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: £966, Upfront: £15,423, Break-even: 16.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 1308 kWh 484 kWh £338 £48 £386 £9,319 24.1 yrs £-1,595
3 kW 2687 kWh 1961 kWh 725 kWh £507 £73 £579 £11,354 19.6 yrs £233
4 kW 3582 kWh 2615 kWh 967 kWh £676 £97 £772 £13,388 17.3 yrs £2,061
5 kW 4478 kWh 3269 kWh 1209 kWh £845 £121 £966 £15,423 16.0 yrs £3,889
6 kW 5373 kWh 3923 kWh 1451 kWh £1,014 £145 £1,159 £17,457 15.1 yrs £5,716
7 kW 6269 kWh 4576 kWh 1693 kWh £1,183 £169 £1,352 £19,492 14.4 yrs £7,544
8 kW 7164 kWh 5230 kWh 1934 kWh £1,351 £193 £1,545 £21,526 13.9 yrs £9,372

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: £980, Upfront: £17,173, Break-even: 17.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 1343 kWh 448 kWh £347 £45 £392 £11,069 28.2 yrs £-3,231
3 kW 2687 kWh 2015 kWh 672 kWh £521 £67 £588 £13,104 22.3 yrs £-1,347
4 kW 3582 kWh 2687 kWh 896 kWh £694 £90 £784 £15,138 19.3 yrs £538
5 kW 4478 kWh 3358 kWh 1119 kWh £868 £112 £980 £17,173 17.5 yrs £2,422
6 kW 5373 kWh 4030 kWh 1343 kWh £1,041 £134 £1,176 £19,207 16.3 yrs £4,307
7 kW 6269 kWh 4702 kWh 1567 kWh £1,215 £157 £1,372 £21,242 15.5 yrs £6,191
8 kW 7164 kWh 5373 kWh 1791 kWh £1,388 £179 £1,568 £23,276 14.8 yrs £8,076

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: £994, Upfront: £19,623, Break-even: 19.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1791 kWh 1379 kWh 412 kWh £356 £41 £398 £13,519 34.0 yrs £-5,568
3 kW 2687 kWh 2069 kWh 618 kWh £535 £62 £596 £15,554 26.1 yrs £-3,626
4 kW 3582 kWh 2758 kWh 824 kWh £713 £82 £795 £17,588 22.1 yrs £-1,685
5 kW 4478 kWh 3448 kWh 1030 kWh £891 £103 £994 £19,623 19.7 yrs £256
6 kW 5373 kWh 4137 kWh 1236 kWh £1,069 £124 £1,193 £21,657 18.2 yrs £2,197
7 kW 6269 kWh 4827 kWh 1442 kWh £1,247 £144 £1,391 £23,692 17.0 yrs £4,138
8 kW 7164 kWh 5517 kWh 1648 kWh £1,426 £165 £1,590 £25,726 16.2 yrs £6,080

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 KY4

Figures below are tailored to KY4 — click through for full league tables.

Solar Payback Index Rank #2397 of 2997
12.1 years (UK avg 11.3 years)
~£1,005 /yr • £12,207 upfront
Standing-Charge Drag Rank #1495 of 2997
20.5% (UK avg 21.7%) drag on savings
£206 fixed • ~£1,005 /yr value

Your Area at a Glance

Your Electricity Rate
25.84p/kWh
Daily Fixed Charge
56.55p/day
Local Sunshine
896kWh/kW
A 1 kW system generates ~896 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

Fife (97%)|Perth and Kinross (3%)

Areas Covered

Cowdenbeath, Kinross-shire, West Fife and Coastal Villages, Lochgelly, Cardenden and Benarty, Inverkeithing and Dalgety Bay, Burntisland, Kinghorn and Western Kirkcaldy

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q4 2025

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

KY5 (Fife)
≈4.7 km away
Local sunshine: ~916 kWh/kWp · +2% vs KY4
KY12 (Fife)
≈7.7 km away
Local sunshine: ~882 kWh/kWp · -2% vs KY4
KY11 (Fife)
≈7.9 km away
Local sunshine: ~866 kWh/kWp · -3% vs KY4
KY99 (Fife)
≈8.3 km away
Local sunshine: ~882 kWh/kWp · -2% vs KY4
KY3 (Fife)
≈9.4 km away
Local sunshine: ~874 kWh/kWp · -2% vs KY4
KY2 (Fife)
≈11.3 km away
Local sunshine: ~883 kWh/kWp · -1% vs KY4

Similar sunshine across the UK

S33 (High Peak)
~896 kWh/kWp · -0% vs KY4
AB31 (Aberdeenshire)
~896 kWh/kWp · +0% vs KY4
SA18 (Carmarthenshire)
~895 kWh/kWp · -0% vs KY4