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Solar Panels in FK20 (Stirling)

See if solar pays off for you in Stirling — 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
16.5 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£618
What you save every year
Profit Over 25 Years
£5,277
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 Northern Scotland, the current unit rate is 27.06p/kWh with a 61.00p/day standing charge. Your postcode’s south-facing sunshine yield is 735 kWh/kW — 80 below the regional median (815).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 735 kWh per year on a south-facing roof. We value self-used electricity at 27.1p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.1p/kWh
Standing charge
61.0p/day
Sunshine yield (south)
735 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: £618, Upfront: £10,173, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1469 kWh 588 kWh 882 kWh £159 £88 £247 £4,069 16.5 yrs £875
3 kW 2204 kWh 882 kWh 1322 kWh £239 £132 £371 £6,104 16.5 yrs £1,312
4 kW 2939 kWh 1175 kWh 1763 kWh £318 £176 £494 £8,138 16.5 yrs £1,750
5 kW 3673 kWh 1469 kWh 2204 kWh £398 £220 £618 £10,173 16.5 yrs £2,187
6 kW 4408 kWh 1763 kWh 2645 kWh £477 £264 £742 £12,207 16.5 yrs £2,625
7 kW 5143 kWh 2057 kWh 3086 kWh £557 £309 £865 £14,242 16.5 yrs £3,062
8 kW 5877 kWh 2351 kWh 3526 kWh £636 £353 £989 £16,276 16.5 yrs £3,500

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: £743, Upfront: £12,273, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1469 kWh 882 kWh 588 kWh £239 £59 £297 £6,169 20.7 yrs £-222
3 kW 2204 kWh 1322 kWh 882 kWh £358 £88 £446 £8,204 18.4 yrs £716
4 kW 2939 kWh 1763 kWh 1175 kWh £477 £118 £595 £10,238 17.2 yrs £1,655
5 kW 3673 kWh 2204 kWh 1469 kWh £596 £147 £743 £12,273 16.5 yrs £2,594
6 kW 4408 kWh 2645 kWh 1763 kWh £716 £176 £892 £14,307 16.0 yrs £3,533
7 kW 5143 kWh 3086 kWh 2057 kWh £835 £206 £1,041 £16,342 15.7 yrs £4,472
8 kW 5877 kWh 3526 kWh 2351 kWh £954 £235 £1,189 £18,376 15.5 yrs £5,410

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: £806, Upfront: £13,673, 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 1469 kWh 1029 kWh 441 kWh £278 £44 £322 £7,569 23.5 yrs £-1,121
3 kW 2204 kWh 1543 kWh 661 kWh £417 £66 £484 £9,604 19.9 yrs £68
4 kW 2939 kWh 2057 kWh 882 kWh £557 £88 £645 £11,638 18.0 yrs £1,258
5 kW 3673 kWh 2571 kWh 1102 kWh £696 £110 £806 £13,673 17.0 yrs £2,447
6 kW 4408 kWh 3086 kWh 1322 kWh £835 £132 £967 £15,707 16.2 yrs £3,637
7 kW 5143 kWh 3600 kWh 1543 kWh £974 £154 £1,128 £17,742 15.7 yrs £4,826
8 kW 5877 kWh 4114 kWh 1763 kWh £1,113 £176 £1,290 £19,776 15.3 yrs £6,016

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: £825, Upfront: £15,423, Break-even: 18.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1469 kWh 1073 kWh 397 kWh £290 £40 £330 £9,319 28.2 yrs £-2,721
3 kW 2204 kWh 1609 kWh 595 kWh £435 £60 £495 £11,354 22.9 yrs £-1,456
4 kW 2939 kWh 2145 kWh 793 kWh £580 £79 £660 £13,388 20.3 yrs £-191
5 kW 3673 kWh 2682 kWh 992 kWh £726 £99 £825 £15,423 18.7 yrs £1,073
6 kW 4408 kWh 3218 kWh 1190 kWh £871 £119 £990 £17,457 17.6 yrs £2,338
7 kW 5143 kWh 3754 kWh 1389 kWh £1,016 £139 £1,155 £19,492 16.9 yrs £3,603
8 kW 5877 kWh 4290 kWh 1587 kWh £1,161 £159 £1,320 £21,526 16.3 yrs £4,867

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: £837, Upfront: £17,173, Break-even: 20.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1469 kWh 1102 kWh 367 kWh £298 £37 £335 £11,069 33.0 yrs £-4,370
3 kW 2204 kWh 1653 kWh 551 kWh £447 £55 £502 £13,104 26.1 yrs £-3,056
4 kW 2939 kWh 2204 kWh 735 kWh £596 £73 £670 £15,138 22.6 yrs £-1,741
5 kW 3673 kWh 2755 kWh 918 kWh £745 £92 £837 £17,173 20.5 yrs £-426
6 kW 4408 kWh 3306 kWh 1102 kWh £895 £110 £1,005 £19,207 19.1 yrs £889
7 kW 5143 kWh 3857 kWh 1286 kWh £1,044 £129 £1,172 £21,242 18.1 yrs £2,204
8 kW 5877 kWh 4408 kWh 1469 kWh £1,193 £147 £1,340 £23,276 17.4 yrs £3,518

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: £850, Upfront: £19,623, Break-even: 23.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1469 kWh 1131 kWh 338 kWh £306 £34 £340 £13,519 39.8 yrs £-6,720
3 kW 2204 kWh 1697 kWh 507 kWh £459 £51 £510 £15,554 30.5 yrs £-5,355
4 kW 2939 kWh 2263 kWh 676 kWh £612 £68 £680 £17,588 25.9 yrs £-3,990
5 kW 3673 kWh 2828 kWh 845 kWh £765 £84 £850 £19,623 23.1 yrs £-2,625
6 kW 4408 kWh 3394 kWh 1014 kWh £918 £101 £1,020 £21,657 21.2 yrs £-1,260
7 kW 5143 kWh 3960 kWh 1183 kWh £1,072 £118 £1,190 £23,692 19.9 yrs £105
8 kW 5877 kWh 4526 kWh 1352 kWh £1,225 £135 £1,360 £25,726 18.9 yrs £1,470

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 FK20

Figures below are tailored to FK20 — click through for full league tables.

Solar Payback Index Rank #2958 of 2997
14.3 years (UK avg 11.3 years)
~£570 /yr • £8,138 upfront
Standing-Charge Drag Rank #2959 of 2997
39.1% (UK avg 21.7%) drag on savings
£223 fixed • ~£570 /yr value

Your Area at a Glance

Your Electricity Rate
27.06p/kWh
Daily Fixed Charge
61.00p/day
Local Sunshine
735kWh/kW
A 1 kW system generates ~735 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

No EPC data available for this outcode

Coverage

Stirling (96%)|Argyll and Bute (4%)

Areas Covered

Trossachs and Teith, Oban North and Lorn

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 Northern Scotland

PA36 (Argyll and Bute)
≈16.6 km away
Local sunshine: ~698 kWh/kWp · -5% vs FK20
FK18 (Stirling)
≈19.6 km away
Local sunshine: ~753 kWh/kWp · +3% vs FK20
FK21 (Stirling)
≈20.2 km away
Local sunshine: ~768 kWh/kWp · +5% vs FK20
FK19 (Stirling)
≈20.4 km away
Local sunshine: ~769 kWh/kWp · +5% vs FK20
PA33 (Argyll and Bute)
≈23.4 km away
Local sunshine: ~713 kWh/kWp · -3% vs FK20
PA26 (Argyll and Bute)
≈25.0 km away
Local sunshine: ~684 kWh/kWp · -7% vs FK20

Similar sunshine across the UK

PA19 (Inverclyde)
~756 kWh/kWp · +3% vs FK20
DL11 (North Yorkshire)
~765 kWh/kWp · +4% vs FK20
G84 (Argyll and Bute)
~766 kWh/kWp · +4% vs FK20