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Solar Panels in KW7 (Highland)

See if solar pays off for you in Highland — 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
14.8 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£689
What you save every year
Profit Over 25 Years
£7,061
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 819 kWh/kW — 4 above 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 819 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)
819 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: £689, 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 1639 kWh 656 kWh 983 kWh £177 £98 £276 £4,069 14.8 yrs £1,446
3 kW 2458 kWh 983 kWh 1475 kWh £266 £148 £414 £6,104 14.8 yrs £2,169
4 kW 3278 kWh 1311 kWh 1967 kWh £355 £197 £551 £8,138 14.8 yrs £2,892
5 kW 4097 kWh 1639 kWh 2458 kWh £444 £246 £689 £10,173 14.8 yrs £3,614
6 kW 4917 kWh 1967 kWh 2950 kWh £532 £295 £827 £12,207 14.8 yrs £4,337
7 kW 5736 kWh 2295 kWh 3442 kWh £621 £344 £965 £14,242 14.8 yrs £5,060
8 kW 6556 kWh 2622 kWh 3934 kWh £710 £393 £1,103 £16,276 14.8 yrs £5,783

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: £829, 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 1639 kWh 983 kWh 656 kWh £266 £66 £332 £6,169 18.6 yrs £464
3 kW 2458 kWh 1475 kWh 983 kWh £399 £98 £497 £8,204 16.5 yrs £1,746
4 kW 3278 kWh 1967 kWh 1311 kWh £532 £131 £663 £10,238 15.4 yrs £3,028
5 kW 4097 kWh 2458 kWh 1639 kWh £665 £164 £829 £12,273 14.8 yrs £4,310
6 kW 4917 kWh 2950 kWh 1967 kWh £798 £197 £995 £14,307 14.4 yrs £5,593
7 kW 5736 kWh 3442 kWh 2295 kWh £931 £229 £1,161 £16,342 14.1 yrs £6,875
8 kW 6556 kWh 3934 kWh 2622 kWh £1,064 £262 £1,327 £18,376 13.9 yrs £8,157

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: £899, 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 1639 kWh 1147 kWh 492 kWh £310 £49 £360 £7,569 21.0 yrs £-377
3 kW 2458 kWh 1721 kWh 738 kWh £466 £74 £539 £9,604 17.8 yrs £1,185
4 kW 3278 kWh 2295 kWh 983 kWh £621 £98 £719 £11,638 16.2 yrs £2,747
5 kW 4097 kWh 2868 kWh 1229 kWh £776 £123 £899 £13,673 15.2 yrs £4,308
6 kW 4917 kWh 3442 kWh 1475 kWh £931 £148 £1,079 £15,707 14.6 yrs £5,870
7 kW 5736 kWh 4015 kWh 1721 kWh £1,087 £172 £1,259 £17,742 14.1 yrs £7,432
8 kW 6556 kWh 4589 kWh 1967 kWh £1,242 £197 £1,438 £19,776 13.7 yrs £8,994

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: £920, 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 1639 kWh 1196 kWh 443 kWh £324 £44 £368 £9,319 25.3 yrs £-1,959
3 kW 2458 kWh 1795 kWh 664 kWh £486 £66 £552 £11,354 20.6 yrs £-313
4 kW 3278 kWh 2393 kWh 885 kWh £648 £89 £736 £13,388 18.2 yrs £1,332
5 kW 4097 kWh 2991 kWh 1106 kWh £809 £111 £920 £15,423 16.8 yrs £2,978
6 kW 4917 kWh 3589 kWh 1328 kWh £971 £133 £1,104 £17,457 15.8 yrs £4,623
7 kW 5736 kWh 4188 kWh 1549 kWh £1,133 £155 £1,288 £19,492 15.1 yrs £6,269
8 kW 6556 kWh 4786 kWh 1770 kWh £1,295 £177 £1,472 £21,526 14.6 yrs £7,915

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: £934, 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 1639 kWh 1229 kWh 410 kWh £333 £41 £374 £11,069 29.6 yrs £-3,597
3 kW 2458 kWh 1844 kWh 615 kWh £499 £61 £560 £13,104 23.4 yrs £-1,896
4 kW 3278 kWh 2458 kWh 819 kWh £665 £82 £747 £15,138 20.3 yrs £-194
5 kW 4097 kWh 3073 kWh 1024 kWh £832 £102 £934 £17,173 18.4 yrs £1,507
6 kW 4917 kWh 3688 kWh 1229 kWh £998 £123 £1,121 £19,207 17.1 yrs £3,209
7 kW 5736 kWh 4302 kWh 1434 kWh £1,164 £143 £1,308 £21,242 16.2 yrs £4,910
8 kW 6556 kWh 4917 kWh 1639 kWh £1,331 £164 £1,494 £23,276 15.6 yrs £6,612

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: £948, 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 1639 kWh 1262 kWh 377 kWh £341 £38 £379 £13,519 35.7 yrs £-5,935
3 kW 2458 kWh 1893 kWh 565 kWh £512 £57 £569 £15,554 27.3 yrs £-4,178
4 kW 3278 kWh 2524 kWh 754 kWh £683 £75 £758 £17,588 23.2 yrs £-2,420
5 kW 4097 kWh 3155 kWh 942 kWh £854 £94 £948 £19,623 20.7 yrs £-663
6 kW 4917 kWh 3786 kWh 1131 kWh £1,024 £113 £1,138 £21,657 19.0 yrs £1,095
7 kW 5736 kWh 4417 kWh 1319 kWh £1,195 £132 £1,327 £23,692 17.9 yrs £2,852
8 kW 6556 kWh 5048 kWh 1508 kWh £1,366 £151 £1,517 £25,726 17.0 yrs £4,609

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 KW7

Figures below are tailored to KW7 — click through for full league tables.

Solar Payback Index Rank #2738 of 2997
12.8 years (UK avg 11.3 years)
~£635 /yr • £8,138 upfront
Standing-Charge Drag Rank #2863 of 2997
35.1% (UK avg 21.7%) drag on savings
£223 fixed • ~£635 /yr value

Your Area at a Glance

Your Electricity Rate
27.06p/kWh
Daily Fixed Charge
61.00p/day
Local Sunshine
819kWh/kW
A 1 kW system generates ~819 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

Highland (100%)

Areas Covered

Wick and East Caithness

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

KW6 (Highland)
≈8.0 km away
Local sunshine: ~814 kWh/kWp · -1% vs KW7
KW8 (Highland)
≈11.6 km away
Local sunshine: ~823 kWh/kWp · +0% vs KW7
KW5 (Highland)
≈12.6 km away
Local sunshine: ~828 kWh/kWp · +1% vs KW7
KW3 (Highland)
≈18.2 km away
Local sunshine: ~838 kWh/kWp · +2% vs KW7
KW2 (Highland)
≈26.9 km away
Local sunshine: ~832 kWh/kWp · +2% vs KW7
KW9 (Highland)
≈28.4 km away
Local sunshine: ~829 kWh/kWp · +1% vs KW7

Similar sunshine across the UK

ML5 (North Lanarkshire)
~819 kWh/kWp · -0% vs KW7
G69 (North Lanarkshire)
~819 kWh/kWp · -0% vs KW7
LL58 (Isle of Anglesey)
~819 kWh/kWp · -0% vs KW7