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Solar panel cost in Na h-Eileanan Siar (HS6)

See realistic solar installation costs, savings and payback for HS6 (Na h-Eileanan Siar) 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
£677
What you save every year
Profit Over 25 Years
£8,795
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 818 kWh/kW — 3 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 818 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)
818 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: £677, 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 1635 kWh 654 kWh 981 kWh £173 £98 £271 £3,256 12.0 yrs £2,163
3 kW 2453 kWh 981 kWh 1472 kWh £259 £147 £406 £4,883 12.0 yrs £3,245
4 kW 3271 kWh 1308 kWh 1962 kWh £346 £196 £542 £6,511 12.0 yrs £4,327
5 kW 4088 kWh 1635 kWh 2453 kWh £432 £245 £677 £8,139 12.0 yrs £5,408
6 kW 4906 kWh 1962 kWh 2944 kWh £518 £294 £813 £9,767 12.0 yrs £6,490
7 kW 5724 kWh 2289 kWh 3434 kWh £605 £343 £948 £11,394 12.0 yrs £7,571
8 kW 6541 kWh 2617 kWh 3925 kWh £691 £392 £1,084 £13,022 12.0 yrs £8,653

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: £812, 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 1635 kWh 981 kWh 654 kWh £259 £65 £325 £5,356 16.5 yrs £1,137
3 kW 2453 kWh 1472 kWh 981 kWh £389 £98 £487 £6,983 14.3 yrs £2,756
4 kW 3271 kWh 1962 kWh 1308 kWh £518 £131 £649 £8,611 13.3 yrs £4,375
5 kW 4088 kWh 2453 kWh 1635 kWh £648 £164 £812 £10,239 12.6 yrs £5,993
6 kW 4906 kWh 2944 kWh 1962 kWh £778 £196 £974 £11,867 12.2 yrs £7,612
7 kW 5724 kWh 3434 kWh 2289 kWh £907 £229 £1,136 £13,494 11.9 yrs £9,231
8 kW 6541 kWh 3925 kWh 2617 kWh £1,037 £262 £1,299 £15,122 11.6 yrs £10,849

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: £879, 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 1635 kWh 1145 kWh 491 kWh £302 £49 £351 £6,756 19.2 yrs £274
3 kW 2453 kWh 1717 kWh 736 kWh £454 £74 £527 £8,383 15.9 yrs £2,162
4 kW 3271 kWh 2289 kWh 981 kWh £605 £98 £703 £10,011 14.2 yrs £4,049
5 kW 4088 kWh 2862 kWh 1226 kWh £756 £123 £879 £11,639 13.2 yrs £5,936
6 kW 4906 kWh 3434 kWh 1472 kWh £907 £147 £1,054 £13,267 12.6 yrs £7,823
7 kW 5724 kWh 4007 kWh 1717 kWh £1,059 £172 £1,230 £14,894 12.1 yrs £9,710
8 kW 6541 kWh 4579 kWh 1962 kWh £1,210 £196 £1,406 £16,522 11.8 yrs £11,598

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: £899, 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 1635 kWh 1194 kWh 442 kWh £315 £44 £360 £8,506 23.7 yrs £-1,314
3 kW 2453 kWh 1791 kWh 662 kWh £473 £66 £539 £10,133 18.8 yrs £653
4 kW 3271 kWh 2388 kWh 883 kWh £631 £88 £719 £11,761 16.4 yrs £2,621
5 kW 4088 kWh 2984 kWh 1104 kWh £788 £110 £899 £13,389 14.9 yrs £4,589
6 kW 4906 kWh 3581 kWh 1325 kWh £946 £132 £1,079 £15,017 13.9 yrs £6,557
7 kW 5724 kWh 4178 kWh 1545 kWh £1,104 £155 £1,258 £16,644 13.2 yrs £8,524
8 kW 6541 kWh 4775 kWh 1766 kWh £1,262 £177 £1,438 £18,272 12.7 yrs £10,492

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: £912, 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 1635 kWh 1226 kWh 409 kWh £324 £41 £365 £10,256 28.1 yrs £-2,957
3 kW 2453 kWh 1840 kWh 613 kWh £486 £61 £547 £11,883 21.7 yrs £-936
4 kW 3271 kWh 2453 kWh 818 kWh £648 £82 £730 £13,511 18.5 yrs £1,086
5 kW 4088 kWh 3066 kWh 1022 kWh £810 £102 £912 £15,139 16.6 yrs £3,107
6 kW 4906 kWh 3679 kWh 1226 kWh £972 £123 £1,095 £16,767 15.3 yrs £5,129
7 kW 5724 kWh 4293 kWh 1431 kWh £1,134 £143 £1,277 £18,394 14.4 yrs £7,150
8 kW 6541 kWh 4906 kWh 1635 kWh £1,296 £164 £1,460 £20,022 13.7 yrs £9,172

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: £926, 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 1635 kWh 1259 kWh 376 kWh £333 £38 £370 £12,706 34.3 yrs £-5,300
3 kW 2453 kWh 1889 kWh 564 kWh £499 £56 £555 £14,333 25.8 yrs £-3,225
4 kW 3271 kWh 2518 kWh 752 kWh £665 £75 £741 £15,961 21.6 yrs £-1,149
5 kW 4088 kWh 3148 kWh 940 kWh £832 £94 £926 £17,589 19.0 yrs £926
6 kW 4906 kWh 3778 kWh 1128 kWh £998 £113 £1,111 £19,217 17.3 yrs £3,001
7 kW 5724 kWh 4407 kWh 1316 kWh £1,164 £132 £1,296 £20,844 16.1 yrs £5,076
8 kW 6541 kWh 5037 kWh 1504 kWh £1,331 £150 £1,481 £22,472 15.2 yrs £7,151

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 Na h-Eileanan Siar

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 HS6

Figures below are tailored to HS6 — click through for full league tables.

Solar Payback Index Rank #2868 of 2996
13.5 years (UK avg 10.8 years)
~£542 /yr • £7,307 upfront
Standing-Charge Drag Rank #2770 of 2996
38.7% (UK avg 26.6%) drag on savings
£210 fixed • ~£542 /yr value
Aspect Penalty View ranking →
East −19.8% West −21.3%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in HS6

Monthly generation per kilowatt of solar panels

kWh 16 Jan 36 Feb 73 Mar 106 Apr 121 May 114 Jun 106 Jul 94 Aug 69 Sep 47 Oct 24 Nov 12 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 31.4% 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 21 kWh per month; the average month produces around 68 kWh. So a typical 4 kW home system would generate roughly 86 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
818kWh/kW
A 1 kW system generates ~818 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

Na h-Eileanan Siar (100%)

Areas Covered

Uibhist a Tuath

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

PA82 (Na h-Eileanan Siar)
≈1.8 km away
Local sunshine: ~818 kWh/kWp · +0% vs HS6
PA88 (Na h-Eileanan Siar)
≈15.6 km away
Local sunshine: ~861 kWh/kWp · +5% vs HS6
HS7 (Na h-Eileanan Siar)
≈16.0 km away
Local sunshine: ~861 kWh/kWp · +5% vs HS6
HS5 (Na h-Eileanan Siar)
≈24.4 km away
Local sunshine: ~812 kWh/kWp · -1% vs HS6
PA83 (Na h-Eileanan Siar)
≈24.5 km away
Local sunshine: ~809 kWh/kWp · -1% vs HS6
HS3 (Na h-Eileanan Siar)
≈42.0 km away
Local sunshine: ~719 kWh/kWp · -12% vs HS6

Similar sunshine across the UK

G77 (East Renfrewshire)
~818 kWh/kWp · +0% vs HS6
G68 (North Lanarkshire)
~818 kWh/kWp · +0% vs HS6
G70 (North Lanarkshire)
~817 kWh/kWp · -0% vs HS6