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Solar Panels in HS9 (Na h-Eileanan Siar)

See if solar pays off for you in Na h-Eileanan Siar — price, savings and payback in under a minute (official UK data).

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
14.1 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£721
What you save every year
Profit Over 25 Years
£7,848
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 27.06p/kWh with a 61.00p/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 27.1p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.1p/kWh
Standing charge
61.0p/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: £721, Upfront: £10,173, Break-even: 14.1 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 £185 £103 £288 £4,069 14.1 yrs £1,698
3 kW 2571 kWh 1028 kWh 1542 kWh £278 £154 £432 £6,104 14.1 yrs £2,546
4 kW 3428 kWh 1371 kWh 2057 kWh £371 £206 £577 £8,138 14.1 yrs £3,395
5 kW 4284 kWh 1714 kWh 2571 kWh £464 £257 £721 £10,173 14.1 yrs £4,244
6 kW 5141 kWh 2057 kWh 3085 kWh £556 £308 £865 £12,207 14.1 yrs £5,093
7 kW 5998 kWh 2399 kWh 3599 kWh £649 £360 £1,009 £14,242 14.1 yrs £5,941
8 kW 6855 kWh 2742 kWh 4113 kWh £742 £411 £1,153 £16,276 14.1 yrs £6,790

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: £867, Upfront: £12,273, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1028 kWh 686 kWh £278 £69 £347 £6,169 17.8 yrs £767
3 kW 2571 kWh 1542 kWh 1028 kWh £417 £103 £520 £8,204 15.8 yrs £2,200
4 kW 3428 kWh 2057 kWh 1371 kWh £556 £137 £694 £10,238 14.8 yrs £3,634
5 kW 4284 kWh 2571 kWh 1714 kWh £696 £171 £867 £12,273 14.2 yrs £5,067
6 kW 5141 kWh 3085 kWh 2057 kWh £835 £206 £1,040 £14,307 13.8 yrs £6,501
7 kW 5998 kWh 3599 kWh 2399 kWh £974 £240 £1,214 £16,342 13.5 yrs £7,934
8 kW 6855 kWh 4113 kWh 2742 kWh £1,113 £274 £1,387 £18,376 13.2 yrs £9,368

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: £940, Upfront: £13,673, Break-even: 14.5 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 £325 £51 £376 £7,569 20.1 yrs £-48
3 kW 2571 kWh 1799 kWh 771 kWh £487 £77 £564 £9,604 17.0 yrs £1,678
4 kW 3428 kWh 2399 kWh 1028 kWh £649 £103 £752 £11,638 15.5 yrs £3,403
5 kW 4284 kWh 2999 kWh 1285 kWh £812 £129 £940 £13,673 14.5 yrs £5,129
6 kW 5141 kWh 3599 kWh 1542 kWh £974 £154 £1,128 £15,707 13.9 yrs £6,855
7 kW 5998 kWh 4199 kWh 1799 kWh £1,136 £180 £1,316 £17,742 13.5 yrs £8,581
8 kW 6855 kWh 4799 kWh 2057 kWh £1,298 £206 £1,504 £19,776 13.1 yrs £10,307

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: £962, Upfront: £15,423, Break-even: 16.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1714 kWh 1251 kWh 463 kWh £339 £46 £385 £9,319 24.2 yrs £-1,623
3 kW 2571 kWh 1877 kWh 694 kWh £508 £69 £577 £11,354 19.7 yrs £191
4 kW 3428 kWh 2502 kWh 925 kWh £677 £93 £770 £13,388 17.4 yrs £2,004
5 kW 4284 kWh 3128 kWh 1157 kWh £846 £116 £962 £15,423 16.0 yrs £3,818
6 kW 5141 kWh 3753 kWh 1388 kWh £1,016 £139 £1,154 £17,457 15.1 yrs £5,631
7 kW 5998 kWh 4379 kWh 1620 kWh £1,185 £162 £1,347 £19,492 14.5 yrs £7,445
8 kW 6855 kWh 5004 kWh 1851 kWh £1,354 £185 £1,539 £21,526 14.0 yrs £9,259

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: £977, Upfront: £17,173, Break-even: 17.6 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 £348 £43 £391 £11,069 28.3 yrs £-3,256
3 kW 2571 kWh 1928 kWh 643 kWh £522 £64 £586 £13,104 22.4 yrs £-1,384
4 kW 3428 kWh 2571 kWh 857 kWh £696 £86 £781 £15,138 19.4 yrs £488
5 kW 4284 kWh 3213 kWh 1071 kWh £870 £107 £977 £17,173 17.6 yrs £2,360
6 kW 5141 kWh 3856 kWh 1285 kWh £1,043 £129 £1,172 £19,207 16.4 yrs £4,232
7 kW 5998 kWh 4499 kWh 1500 kWh £1,217 £150 £1,367 £21,242 15.5 yrs £6,104
8 kW 6855 kWh 5141 kWh 1714 kWh £1,391 £171 £1,563 £23,276 14.9 yrs £7,976

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: £991, Upfront: £19,623, Break-even: 19.8 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 £357 £39 £397 £13,519 34.1 yrs £-5,589
3 kW 2571 kWh 1979 kWh 591 kWh £536 £59 £595 £15,554 26.2 yrs £-3,658
4 kW 3428 kWh 2639 kWh 788 kWh £714 £79 £793 £17,588 22.2 yrs £-1,728
5 kW 4284 kWh 3299 kWh 985 kWh £893 £99 £991 £19,623 19.8 yrs £203
6 kW 5141 kWh 3959 kWh 1183 kWh £1,071 £118 £1,190 £21,657 18.2 yrs £2,133
7 kW 5998 kWh 4619 kWh 1380 kWh £1,250 £138 £1,388 £23,692 17.1 yrs £4,064
8 kW 6855 kWh 5278 kWh 1577 kWh £1,428 £158 £1,586 £25,726 16.2 yrs £5,994

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 #2486 of 2997
12.2 years (UK avg 11.3 years)
~£664 /yr • £8,138 upfront
Standing-Charge Drag Rank #2789 of 2997
33.5% (UK avg 21.7%) drag on savings
£223 fixed • ~£664 /yr value

Your Area at a Glance

Your Electricity Rate
27.06p/kWh
Daily Fixed Charge
61.00p/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, Q4 2025

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