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Solar panel cost in Highland (KW7)

See realistic solar installation costs, savings and payback for KW7 (Highland) 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
12.0 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£679
What you save every year
Profit Over 25 Years
£8,833
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: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • 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

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £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 26.42p/kWh with a 57.55p/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 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
57.5p/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: £679, Upfront: £8,139, Break-even: 12.0 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 £173 £98 £272 £3,256 12.0 yrs £2,175
3 kW 2458 kWh 983 kWh 1475 kWh £260 £148 £407 £4,883 12.0 yrs £3,263
4 kW 3278 kWh 1311 kWh 1967 kWh £346 £197 £543 £6,511 12.0 yrs £4,351
5 kW 4097 kWh 1639 kWh 2458 kWh £433 £246 £679 £8,139 12.0 yrs £5,438
6 kW 4917 kWh 1967 kWh 2950 kWh £520 £295 £815 £9,767 12.0 yrs £6,526
7 kW 5736 kWh 2295 kWh 3442 kWh £606 £344 £950 £11,394 12.0 yrs £7,614
8 kW 6556 kWh 2622 kWh 3934 kWh £693 £393 £1,086 £13,022 12.0 yrs £8,701

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £813, Upfront: £10,239, Break-even: 12.6 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 £260 £66 £325 £5,356 16.5 yrs £1,152
3 kW 2458 kWh 1475 kWh 983 kWh £390 £98 £488 £6,983 14.3 yrs £2,778
4 kW 3278 kWh 1967 kWh 1311 kWh £520 £131 £651 £8,611 13.2 yrs £4,404
5 kW 4097 kWh 2458 kWh 1639 kWh £650 £164 £813 £10,239 12.6 yrs £6,030
6 kW 4917 kWh 2950 kWh 1967 kWh £779 £197 £976 £11,867 12.2 yrs £7,655
7 kW 5736 kWh 3442 kWh 2295 kWh £909 £229 £1,139 £13,494 11.8 yrs £9,281
8 kW 6556 kWh 3934 kWh 2622 kWh £1,039 £262 £1,301 £15,122 11.6 yrs £10,907

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £881, Upfront: £11,639, Break-even: 13.2 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 £303 £49 £352 £6,756 19.2 yrs £290
3 kW 2458 kWh 1721 kWh 738 kWh £455 £74 £528 £8,383 15.9 yrs £2,185
4 kW 3278 kWh 2295 kWh 983 kWh £606 £98 £705 £10,011 14.2 yrs £4,080
5 kW 4097 kWh 2868 kWh 1229 kWh £758 £123 £881 £11,639 13.2 yrs £5,975
6 kW 4917 kWh 3442 kWh 1475 kWh £909 £148 £1,057 £13,267 12.6 yrs £7,870
7 kW 5736 kWh 4015 kWh 1721 kWh £1,061 £172 £1,233 £14,894 12.1 yrs £9,765
8 kW 6556 kWh 4589 kWh 1967 kWh £1,212 £197 £1,409 £16,522 11.7 yrs £11,660

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £901, Upfront: £13,389, Break-even: 14.9 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 £316 £44 £360 £8,506 23.6 yrs £-1,298
3 kW 2458 kWh 1795 kWh 664 kWh £474 £66 £541 £10,133 18.7 yrs £677
4 kW 3278 kWh 2393 kWh 885 kWh £632 £89 £721 £11,761 16.3 yrs £2,653
5 kW 4097 kWh 2991 kWh 1106 kWh £790 £111 £901 £13,389 14.9 yrs £4,629
6 kW 4917 kWh 3589 kWh 1328 kWh £948 £133 £1,081 £15,017 13.9 yrs £6,605
7 kW 5736 kWh 4188 kWh 1549 kWh £1,106 £155 £1,261 £16,644 13.2 yrs £8,580
8 kW 6556 kWh 4786 kWh 1770 kWh £1,264 £177 £1,441 £18,272 12.7 yrs £10,556

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £914, Upfront: £15,139, Break-even: 16.6 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 £325 £41 £366 £10,256 28.0 yrs £-2,941
3 kW 2458 kWh 1844 kWh 615 kWh £487 £61 £549 £11,883 21.7 yrs £-911
4 kW 3278 kWh 2458 kWh 819 kWh £650 £82 £731 £13,511 18.5 yrs £1,118
5 kW 4097 kWh 3073 kWh 1024 kWh £812 £102 £914 £15,139 16.6 yrs £3,148
6 kW 4917 kWh 3688 kWh 1229 kWh £974 £123 £1,097 £16,767 15.3 yrs £5,177
7 kW 5736 kWh 4302 kWh 1434 kWh £1,137 £143 £1,280 £18,394 14.4 yrs £7,207
8 kW 6556 kWh 4917 kWh 1639 kWh £1,299 £164 £1,463 £20,022 13.7 yrs £9,237

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £928, Upfront: £17,589, Break-even: 19.0 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 £333 £38 £371 £12,706 34.2 yrs £-5,283
3 kW 2458 kWh 1893 kWh 565 kWh £500 £57 £557 £14,333 25.7 yrs £-3,200
4 kW 3278 kWh 2524 kWh 754 kWh £667 £75 £742 £15,961 21.5 yrs £-1,116
5 kW 4097 kWh 3155 kWh 942 kWh £834 £94 £928 £17,589 19.0 yrs £967
6 kW 4917 kWh 3786 kWh 1131 kWh £1,000 £113 £1,113 £19,217 17.3 yrs £3,050
7 kW 5736 kWh 4417 kWh 1319 kWh £1,167 £132 £1,299 £20,844 16.0 yrs £5,134
8 kW 6556 kWh 5048 kWh 1508 kWh £1,334 £151 £1,484 £22,472 15.1 yrs £7,217

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, 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.

Before you request quotes in Highland

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Understand DNO, G98 and G99 export limits

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Insights for KW7

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

Solar Payback Index Rank #2872 of 2996
13.5 years (UK avg 10.8 years)
~£543 /yr • £7,307 upfront
Standing-Charge Drag Rank #2771 of 2996
38.7% (UK avg 26.6%) drag on savings
£210 fixed • ~£543 /yr value
Aspect Penalty View ranking →
East −22.3% West −21.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KW7

Monthly generation per kilowatt of solar panels

kWh 20 Jan 39 Feb 71 Mar 102 Apr 116 May 111 Jun 107 Jul 93 Aug 74 Sep 48 Oct 25 Nov 14 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 35.8% 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 24 kWh per month; the average month produces around 68 kWh. So a typical 4 kW home system would generate roughly 98 kWh in winter, or 273 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/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, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

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