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Solar panel cost in Na h-Eileanan Siar (PA83)

See realistic solar installation costs, savings and payback for PA83 (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
12.1 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£670
What you save every year
Profit Over 25 Years
£8,610
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 809 kWh/kW — 6 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 809 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)
809 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: £670, Upfront: £8,139, Break-even: 12.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1617 kWh 647 kWh 970 kWh £171 £97 £268 £3,256 12.1 yrs £2,104
3 kW 2426 kWh 970 kWh 1456 kWh £256 £146 £402 £4,883 12.1 yrs £3,156
4 kW 3235 kWh 1294 kWh 1941 kWh £342 £194 £536 £6,511 12.1 yrs £4,208
5 kW 4044 kWh 1617 kWh 2426 kWh £427 £243 £670 £8,139 12.1 yrs £5,260
6 kW 4852 kWh 1941 kWh 2911 kWh £513 £291 £804 £9,767 12.1 yrs £6,312
7 kW 5661 kWh 2264 kWh 3397 kWh £598 £340 £938 £11,394 12.1 yrs £7,365
8 kW 6470 kWh 2588 kWh 3882 kWh £684 £388 £1,072 £13,022 12.1 yrs £8,417

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: £803, Upfront: £10,239, Break-even: 12.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1617 kWh 970 kWh 647 kWh £256 £65 £321 £5,356 16.7 yrs £1,067
3 kW 2426 kWh 1456 kWh 970 kWh £385 £97 £482 £6,983 14.5 yrs £2,650
4 kW 3235 kWh 1941 kWh 1294 kWh £513 £129 £642 £8,611 13.4 yrs £4,233
5 kW 4044 kWh 2426 kWh 1617 kWh £641 £162 £803 £10,239 12.8 yrs £5,816
6 kW 4852 kWh 2911 kWh 1941 kWh £769 £194 £963 £11,867 12.3 yrs £7,400
7 kW 5661 kWh 3397 kWh 2264 kWh £897 £226 £1,124 £13,494 12.0 yrs £8,983
8 kW 6470 kWh 3882 kWh 2588 kWh £1,026 £259 £1,284 £15,122 11.8 yrs £10,566

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: £869, Upfront: £11,639, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1617 kWh 1132 kWh 485 kWh £299 £49 £348 £6,756 19.4 yrs £198
3 kW 2426 kWh 1698 kWh 728 kWh £449 £73 £521 £8,383 16.1 yrs £2,047
4 kW 3235 kWh 2264 kWh 970 kWh £598 £97 £695 £10,011 14.4 yrs £3,895
5 kW 4044 kWh 2831 kWh 1213 kWh £748 £121 £869 £11,639 13.4 yrs £5,744
6 kW 4852 kWh 3397 kWh 1456 kWh £897 £146 £1,043 £13,267 12.7 yrs £7,593
7 kW 5661 kWh 3963 kWh 1698 kWh £1,047 £170 £1,217 £14,894 12.2 yrs £9,442
8 kW 6470 kWh 4529 kWh 1941 kWh £1,197 £194 £1,391 £16,522 11.9 yrs £11,291

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: £889, Upfront: £13,389, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1617 kWh 1181 kWh 437 kWh £312 £44 £356 £8,506 23.9 yrs £-1,393
3 kW 2426 kWh 1771 kWh 655 kWh £468 £66 £533 £10,133 19.0 yrs £536
4 kW 3235 kWh 2362 kWh 873 kWh £624 £87 £711 £11,761 16.5 yrs £2,464
5 kW 4044 kWh 2952 kWh 1092 kWh £780 £109 £889 £13,389 15.1 yrs £4,393
6 kW 4852 kWh 3542 kWh 1310 kWh £936 £131 £1,067 £15,017 14.1 yrs £6,321
7 kW 5661 kWh 4133 kWh 1529 kWh £1,092 £153 £1,245 £16,644 13.4 yrs £8,250
8 kW 6470 kWh 4723 kWh 1747 kWh £1,248 £175 £1,423 £18,272 12.8 yrs £10,178

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: £902, Upfront: £15,139, 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 1617 kWh 1213 kWh 404 kWh £321 £40 £361 £10,256 28.4 yrs £-3,037
3 kW 2426 kWh 1820 kWh 607 kWh £481 £61 £541 £11,883 21.9 yrs £-1,055
4 kW 3235 kWh 2426 kWh 809 kWh £641 £81 £722 £13,511 18.7 yrs £927
5 kW 4044 kWh 3033 kWh 1011 kWh £801 £101 £902 £15,139 16.8 yrs £2,908
6 kW 4852 kWh 3639 kWh 1213 kWh £962 £121 £1,083 £16,767 15.5 yrs £4,890
7 kW 5661 kWh 4246 kWh 1415 kWh £1,122 £142 £1,263 £18,394 14.6 yrs £6,872
8 kW 6470 kWh 4852 kWh 1617 kWh £1,282 £162 £1,444 £20,022 13.9 yrs £8,853

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: £916, Upfront: £17,589, Break-even: 19.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1617 kWh 1245 kWh 372 kWh £329 £37 £366 £12,706 34.7 yrs £-5,380
3 kW 2426 kWh 1868 kWh 558 kWh £494 £56 £549 £14,333 26.1 yrs £-3,346
4 kW 3235 kWh 2491 kWh 744 kWh £658 £74 £733 £15,961 21.8 yrs £-1,311
5 kW 4044 kWh 3114 kWh 930 kWh £823 £93 £916 £17,589 19.2 yrs £724
6 kW 4852 kWh 3736 kWh 1116 kWh £987 £112 £1,099 £19,217 17.5 yrs £2,759
7 kW 5661 kWh 4359 kWh 1302 kWh £1,152 £130 £1,282 £20,844 16.3 yrs £4,793
8 kW 6470 kWh 4982 kWh 1488 kWh £1,316 £149 £1,465 £22,472 15.3 yrs £6,828

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 PA83

Figures below are tailored to PA83 — click through for full league tables.

Solar Payback Index Rank #2884 of 2996
13.6 years (UK avg 10.8 years)
~£536 /yr • £7,307 upfront
Standing-Charge Drag Rank #2799 of 2996
39.2% (UK avg 26.6%) drag on savings
£210 fixed • ~£536 /yr value
Aspect Penalty View ranking →
East −19.4% West −22.8%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PA83

Monthly generation per kilowatt of solar panels

kWh 15 Jan 34 Feb 71 Mar 105 Apr 122 May 116 Jun 107 Jul 94 Aug 67 Sep 45 Oct 23 Nov 10 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 29.5% 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 20 kWh per month; the average month produces around 67 kWh. So a typical 4 kW home system would generate roughly 79 kWh in winter, or 270 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/day
Local Sunshine
809kWh/kW
A 1 kW system generates ~809 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

Na Hearadh

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

HS5 (Na h-Eileanan Siar)
≈0.1 km away
Local sunshine: ~812 kWh/kWp · +0% vs PA83
HS3 (Na h-Eileanan Siar)
≈17.5 km away
Local sunshine: ~719 kWh/kWp · -11% vs PA83
PA85 (Na h-Eileanan Siar)
≈17.6 km away
Local sunshine: ~719 kWh/kWp · -11% vs PA83
PA84 (Na h-Eileanan Siar)
≈22.0 km away
Local sunshine: ~792 kWh/kWp · -2% vs PA83
HS4 (Na h-Eileanan Siar)
≈22.0 km away
Local sunshine: ~791 kWh/kWp · -2% vs PA83
HS6 (Na h-Eileanan Siar)
≈24.5 km away
Local sunshine: ~818 kWh/kWp · +1% vs PA83

Similar sunshine across the UK

PA16 (Inverclyde)
~808 kWh/kWp · -0% vs PA83
EH45 (Scottish Borders)
~810 kWh/kWp · +0% vs PA83
LL41 (Gwynedd)
~808 kWh/kWp · -0% vs PA83