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Solar panel cost in Na h-Eileanan Siar (HS9)

See realistic solar installation costs, savings and payback for HS9 (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
15.5 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£658
What you save every year
Profit Over 25 Years
£6,280
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 23.40p/kWh with a 58.28p/day standing charge. Your postcode’s south-facing sunshine yield is 857 kWh/kW — 42 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 857 kWh per year on a south-facing roof. We value self-used electricity at 23.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
23.4p/kWh
Standing charge
58.3p/day
Sunshine yield (south)
857 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: £658, Upfront: £10,173, Break-even: 15.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 686 kWh 1028 kWh £160 £103 £263 £4,069 15.5 yrs £1,196
3 kW 2571 kWh 1028 kWh 1542 kWh £241 £154 £395 £6,104 15.5 yrs £1,794
4 kW 3428 kWh 1371 kWh 2057 kWh £321 £206 £526 £8,138 15.5 yrs £2,391
5 kW 4284 kWh 1714 kWh 2571 kWh £401 £257 £658 £10,173 15.5 yrs £2,989
6 kW 5141 kWh 2057 kWh 3085 kWh £481 £308 £790 £12,207 15.5 yrs £3,587
7 kW 5998 kWh 2399 kWh 3599 kWh £561 £360 £921 £14,242 15.5 yrs £4,185
8 kW 6855 kWh 2742 kWh 4113 kWh £642 £411 £1,053 £16,276 15.5 yrs £4,783

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: £773, Upfront: £12,273, Break-even: 15.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1028 kWh 686 kWh £241 £69 £309 £6,169 20.0 yrs £14
3 kW 2571 kWh 1542 kWh 1028 kWh £361 £103 £464 £8,204 17.7 yrs £1,071
4 kW 3428 kWh 2057 kWh 1371 kWh £481 £137 £618 £10,238 16.6 yrs £2,129
5 kW 4284 kWh 2571 kWh 1714 kWh £602 £171 £773 £12,273 15.9 yrs £3,186
6 kW 5141 kWh 3085 kWh 2057 kWh £722 £206 £927 £14,307 15.4 yrs £4,243
7 kW 5998 kWh 3599 kWh 2399 kWh £842 £240 £1,082 £16,342 15.1 yrs £5,300
8 kW 6855 kWh 4113 kWh 2742 kWh £962 £274 £1,237 £18,376 14.9 yrs £6,357

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: £830, Upfront: £13,673, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1200 kWh 514 kWh £281 £51 £332 £7,569 22.8 yrs £-926
3 kW 2571 kWh 1799 kWh 771 kWh £421 £77 £498 £9,604 19.3 yrs £360
4 kW 3428 kWh 2399 kWh 1028 kWh £561 £103 £664 £11,638 17.5 yrs £1,647
5 kW 4284 kWh 2999 kWh 1285 kWh £702 £129 £830 £13,673 16.5 yrs £2,934
6 kW 5141 kWh 3599 kWh 1542 kWh £842 £154 £996 £15,707 15.8 yrs £4,221
7 kW 5998 kWh 4199 kWh 1799 kWh £983 £180 £1,162 £17,742 15.3 yrs £5,508
8 kW 6855 kWh 4799 kWh 2057 kWh £1,123 £206 £1,329 £19,776 14.9 yrs £6,794

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: £848, Upfront: £15,423, Break-even: 18.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1251 kWh 463 kWh £293 £46 £339 £9,319 27.5 yrs £-2,539
3 kW 2571 kWh 1877 kWh 694 kWh £439 £69 £509 £11,354 22.3 yrs £-1,183
4 kW 3428 kWh 2502 kWh 925 kWh £585 £93 £678 £13,388 19.7 yrs £173
5 kW 4284 kWh 3128 kWh 1157 kWh £732 £116 £848 £15,423 18.2 yrs £1,528
6 kW 5141 kWh 3753 kWh 1388 kWh £878 £139 £1,017 £17,457 17.2 yrs £2,884
7 kW 5998 kWh 4379 kWh 1620 kWh £1,025 £162 £1,187 £19,492 16.4 yrs £4,240
8 kW 6855 kWh 5004 kWh 1851 kWh £1,171 £185 £1,356 £21,526 15.9 yrs £5,596

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: £859, Upfront: £17,173, Break-even: 20.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1285 kWh 428 kWh £301 £43 £344 £11,069 32.2 yrs £-4,197
3 kW 2571 kWh 1928 kWh 643 kWh £451 £64 £515 £13,104 25.4 yrs £-2,795
4 kW 3428 kWh 2571 kWh 857 kWh £602 £86 £687 £15,138 22.0 yrs £-1,394
5 kW 4284 kWh 3213 kWh 1071 kWh £752 £107 £859 £17,173 20.0 yrs £8
6 kW 5141 kWh 3856 kWh 1285 kWh £902 £129 £1,031 £19,207 18.6 yrs £1,410
7 kW 5998 kWh 4499 kWh 1500 kWh £1,053 £150 £1,203 £21,242 17.7 yrs £2,811
8 kW 6855 kWh 5141 kWh 1714 kWh £1,203 £171 £1,374 £23,276 16.9 yrs £4,213

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: £871, Upfront: £19,623, Break-even: 22.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1320 kWh 394 kWh £309 £39 £348 £13,519 38.8 yrs £-6,555
3 kW 2571 kWh 1979 kWh 591 kWh £463 £59 £522 £15,554 29.8 yrs £-5,107
4 kW 3428 kWh 2639 kWh 788 kWh £618 £79 £696 £17,588 25.3 yrs £-3,660
5 kW 4284 kWh 3299 kWh 985 kWh £772 £99 £871 £19,623 22.5 yrs £-2,212
6 kW 5141 kWh 3959 kWh 1183 kWh £926 £118 £1,045 £21,657 20.7 yrs £-765
7 kW 5998 kWh 4619 kWh 1380 kWh £1,081 £138 £1,219 £23,692 19.4 yrs £683
8 kW 6855 kWh 5278 kWh 1577 kWh £1,235 £158 £1,393 £25,726 18.5 yrs £2,130

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 HS9

Figures below are tailored to HS9 — click through for full league tables.

Solar Payback Index Rank #2569 of 2997
13.7 years (UK avg 12.6 years)
~£594 /yr • £8,138 upfront
Standing-Charge Drag Rank #2789 of 2997
38.1% (UK avg 24.6%) drag on savings
£227 fixed • ~£594 /yr value
Aspect Penalty View ranking →
East −19.0% West −22.9%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in HS9

Monthly generation per kilowatt of solar panels

kWh 15 Jan 35 Feb 74 Mar 112 Apr 129 May 122 Jun 116 Jul 102 Aug 71 Sep 47 Oct 21 Nov 12 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 28.8% 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 21 kWh per month; the average month produces around 71 kWh. So a typical 4 kW home system would generate roughly 82 kWh in winter, or 286 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.40p/kWh
Daily Fixed Charge
58.28p/day
Local Sunshine
857kWh/kW
A 1 kW system generates ~857 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

Barraigh agus Bhatarsaigh

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q1 2026

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

PA80 (Na h-Eileanan Siar)
≈4.3 km away
Local sunshine: ~789 kWh/kWp · -8% vs HS9
PA81 (Na h-Eileanan Siar)
≈28.9 km away
Local sunshine: ~846 kWh/kWp · -1% vs HS9
HS8 (Na h-Eileanan Siar)
≈29.0 km away
Local sunshine: ~861 kWh/kWp · +0% vs HS9
HS7 (Na h-Eileanan Siar)
≈56.5 km away
Local sunshine: ~861 kWh/kWp · +0% vs HS9
PA88 (Na h-Eileanan Siar)
≈56.8 km away
Local sunshine: ~861 kWh/kWp · +0% vs HS9
PH44 (Highland)
≈60.5 km away
Local sunshine: ~827 kWh/kWp · -3% vs HS9

Similar sunshine across the UK

BB1 (Blackburn with Darwen)
~857 kWh/kWp · +0% vs HS9
BB2 (Blackburn with Darwen)
~857 kWh/kWp · +0% vs HS9
KA25 (North Ayrshire)
~856 kWh/kWp · -0% vs HS9