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Solar panel cost in Highland (KW9)

See realistic solar installation costs, savings and payback for KW9 (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
11.9 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£686
What you save every year
Profit Over 25 Years
£9,020
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 829 kWh/kW — 14 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 829 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)
829 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: £686, Upfront: £8,139, Break-even: 11.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 663 kWh 994 kWh £175 £99 £275 £3,256 11.9 yrs £2,235
3 kW 2486 kWh 994 kWh 1491 kWh £263 £149 £412 £4,883 11.9 yrs £3,353
4 kW 3314 kWh 1326 kWh 1989 kWh £350 £199 £549 £6,511 11.9 yrs £4,471
5 kW 4143 kWh 1657 kWh 2486 kWh £438 £249 £686 £8,139 11.9 yrs £5,589
6 kW 4971 kWh 1989 kWh 2983 kWh £525 £298 £824 £9,767 11.9 yrs £6,706
7 kW 5800 kWh 2320 kWh 3480 kWh £613 £348 £961 £11,394 11.9 yrs £7,824
8 kW 6628 kWh 2651 kWh 3977 kWh £700 £398 £1,098 £13,022 11.9 yrs £8,942

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: £822, Upfront: £10,239, Break-even: 12.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 994 kWh 663 kWh £263 £66 £329 £5,356 16.3 yrs £1,224
3 kW 2486 kWh 1491 kWh 994 kWh £394 £99 £493 £6,983 14.2 yrs £2,886
4 kW 3314 kWh 1989 kWh 1326 kWh £525 £133 £658 £8,611 13.1 yrs £4,548
5 kW 4143 kWh 2486 kWh 1657 kWh £657 £166 £822 £10,239 12.4 yrs £6,210
6 kW 4971 kWh 2983 kWh 1989 kWh £788 £199 £987 £11,867 12.0 yrs £7,871
7 kW 5800 kWh 3480 kWh 2320 kWh £919 £232 £1,151 £13,494 11.7 yrs £9,533
8 kW 6628 kWh 3977 kWh 2651 kWh £1,051 £265 £1,316 £15,122 11.5 yrs £11,195

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: £890, Upfront: £11,639, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1160 kWh 497 kWh £306 £50 £356 £6,756 19.0 yrs £368
3 kW 2486 kWh 1740 kWh 746 kWh £460 £75 £534 £8,383 15.7 yrs £2,302
4 kW 3314 kWh 2320 kWh 994 kWh £613 £99 £712 £10,011 14.1 yrs £4,236
5 kW 4143 kWh 2900 kWh 1243 kWh £766 £124 £890 £11,639 13.1 yrs £6,170
6 kW 4971 kWh 3480 kWh 1491 kWh £919 £149 £1,069 £13,267 12.4 yrs £8,104
7 kW 5800 kWh 4060 kWh 1740 kWh £1,073 £174 £1,247 £14,894 11.9 yrs £10,038
8 kW 6628 kWh 4640 kWh 1989 kWh £1,226 £199 £1,425 £16,522 11.6 yrs £11,972

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: £911, Upfront: £13,389, Break-even: 14.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1210 kWh 447 kWh £320 £45 £364 £8,506 23.3 yrs £-1,219
3 kW 2486 kWh 1815 kWh 671 kWh £479 £67 £547 £10,133 18.5 yrs £797
4 kW 3314 kWh 2419 kWh 895 kWh £639 £89 £729 £11,761 16.1 yrs £2,813
5 kW 4143 kWh 3024 kWh 1119 kWh £799 £112 £911 £13,389 14.7 yrs £4,828
6 kW 4971 kWh 3629 kWh 1342 kWh £959 £134 £1,093 £15,017 13.7 yrs £6,844
7 kW 5800 kWh 4234 kWh 1566 kWh £1,119 £157 £1,275 £16,644 13.1 yrs £8,859
8 kW 6628 kWh 4839 kWh 1790 kWh £1,278 £179 £1,457 £18,272 12.5 yrs £10,875

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: £924, Upfront: £15,139, Break-even: 16.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1243 kWh 414 kWh £328 £41 £370 £10,256 27.7 yrs £-2,860
3 kW 2486 kWh 1864 kWh 621 kWh £493 £62 £555 £11,883 21.4 yrs £-790
4 kW 3314 kWh 2486 kWh 829 kWh £657 £83 £740 £13,511 18.3 yrs £1,280
5 kW 4143 kWh 3107 kWh 1036 kWh £821 £104 £924 £15,139 16.4 yrs £3,350
6 kW 4971 kWh 3728 kWh 1243 kWh £985 £124 £1,109 £16,767 15.1 yrs £5,420
7 kW 5800 kWh 4350 kWh 1450 kWh £1,149 £145 £1,294 £18,394 14.2 yrs £7,490
8 kW 6628 kWh 4971 kWh 1657 kWh £1,313 £166 £1,479 £20,022 13.5 yrs £9,560

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: £938, Upfront: £17,589, Break-even: 18.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1276 kWh 381 kWh £337 £38 £375 £12,706 33.9 yrs £-5,201
3 kW 2486 kWh 1914 kWh 572 kWh £506 £57 £563 £14,333 25.5 yrs £-3,077
4 kW 3314 kWh 2552 kWh 762 kWh £674 £76 £750 £15,961 21.3 yrs £-952
5 kW 4143 kWh 3190 kWh 953 kWh £843 £95 £938 £17,589 18.8 yrs £1,172
6 kW 4971 kWh 3828 kWh 1143 kWh £1,011 £114 £1,126 £19,217 17.1 yrs £3,297
7 kW 5800 kWh 4466 kWh 1334 kWh £1,180 £133 £1,313 £20,844 15.9 yrs £5,421
8 kW 6628 kWh 5104 kWh 1525 kWh £1,348 £152 £1,501 £22,472 15.0 yrs £7,546

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 KW9

Figures below are tailored to KW9 — click through for full league tables.

Solar Payback Index Rank #2847 of 2996
13.3 years (UK avg 10.8 years)
~£549 /yr • £7,307 upfront
Standing-Charge Drag Rank #2755 of 2996
38.3% (UK avg 26.6%) drag on savings
£210 fixed • ~£549 /yr value
Aspect Penalty View ranking →
East −21.5% West −22.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in KW9

Monthly generation per kilowatt of solar panels

kWh 21 Jan 40 Feb 71 Mar 102 Apr 117 May 111 Jun 108 Jul 93 Aug 73 Sep 49 Oct 27 Nov 17 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 37.5% 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 26 kWh per month; the average month produces around 69 kWh. So a typical 4 kW home system would generate roughly 104 kWh in winter, or 276 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/day
Local Sunshine
829kWh/kW
A 1 kW system generates ~829 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

East Sutherland and Edderton

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

KW10 (Highland)
≈8.2 km away
Local sunshine: ~801 kWh/kWp · -3% vs KW9
KW8 (Highland)
≈16.7 km away
Local sunshine: ~823 kWh/kWp · -1% vs KW9
IV28 (Highland)
≈17.7 km away
Local sunshine: ~802 kWh/kWp · -3% vs KW9
IV25 (Highland)
≈17.8 km away
Local sunshine: ~822 kWh/kWp · -1% vs KW9
IV19 (Highland)
≈25.2 km away
Local sunshine: ~860 kWh/kWp · +4% vs KW9
IV20 (Highland)
≈26.3 km away
Local sunshine: ~814 kWh/kWp · -2% vs KW9

Similar sunshine across the UK

BT93 (Fermanagh and Omagh)
~829 kWh/kWp · +0% vs KW9
G51 (Glasgow City)
~828 kWh/kWp · -0% vs KW9
OL1 (Oldham)
~829 kWh/kWp · +0% vs KW9