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Solar Panels in HS2 (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
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
£6,273
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 782 kWh/kW — 33 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 782 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)
782 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 1564 kWh 626 kWh 938 kWh £169 £94 £263 £4,069 15.5 yrs £1,194
3 kW 2346 kWh 938 kWh 1408 kWh £254 £141 £395 £6,104 15.5 yrs £1,790
4 kW 3128 kWh 1251 kWh 1877 kWh £339 £188 £526 £8,138 15.5 yrs £2,387
5 kW 3910 kWh 1564 kWh 2346 kWh £423 £235 £658 £10,173 15.5 yrs £2,984
6 kW 4692 kWh 1877 kWh 2815 kWh £508 £282 £789 £12,207 15.5 yrs £3,581
7 kW 5474 kWh 2190 kWh 3284 kWh £593 £328 £921 £14,242 15.5 yrs £4,177
8 kW 6256 kWh 2502 kWh 3754 kWh £677 £375 £1,053 £16,276 15.5 yrs £4,774

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: £791, Upfront: £12,273, 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 1564 kWh 938 kWh 626 kWh £254 £63 £316 £6,169 19.5 yrs £161
3 kW 2346 kWh 1408 kWh 938 kWh £381 £94 £475 £8,204 17.3 yrs £1,291
4 kW 3128 kWh 1877 kWh 1251 kWh £508 £125 £633 £10,238 16.2 yrs £2,422
5 kW 3910 kWh 2346 kWh 1564 kWh £635 £156 £791 £12,273 15.5 yrs £3,552
6 kW 4692 kWh 2815 kWh 1877 kWh £762 £188 £949 £14,307 15.1 yrs £4,682
7 kW 5474 kWh 3284 kWh 2190 kWh £889 £219 £1,108 £16,342 14.8 yrs £5,813
8 kW 6256 kWh 3754 kWh 2502 kWh £1,016 £250 £1,266 £18,376 14.5 yrs £6,943

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: £858, Upfront: £13,673, 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 1564 kWh 1095 kWh 469 kWh £296 £47 £343 £7,569 22.1 yrs £-706
3 kW 2346 kWh 1642 kWh 704 kWh £444 £70 £515 £9,604 18.7 yrs £692
4 kW 3128 kWh 2190 kWh 938 kWh £593 £94 £686 £11,638 17.0 yrs £2,089
5 kW 3910 kWh 2737 kWh 1173 kWh £741 £117 £858 £13,673 15.9 yrs £3,486
6 kW 4692 kWh 3284 kWh 1408 kWh £889 £141 £1,030 £15,707 15.3 yrs £4,883
7 kW 5474 kWh 3832 kWh 1642 kWh £1,037 £164 £1,201 £17,742 14.8 yrs £6,281
8 kW 6256 kWh 4379 kWh 1877 kWh £1,185 £188 £1,373 £19,776 14.4 yrs £7,678

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: £878, Upfront: £15,423, 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 1564 kWh 1142 kWh 422 kWh £309 £42 £351 £9,319 26.5 yrs £-2,295
3 kW 2346 kWh 1713 kWh 633 kWh £463 £63 £527 £11,354 21.6 yrs £-818
4 kW 3128 kWh 2283 kWh 845 kWh £618 £84 £702 £13,388 19.1 yrs £659
5 kW 3910 kWh 2854 kWh 1056 kWh £772 £106 £878 £15,423 17.6 yrs £2,136
6 kW 4692 kWh 3425 kWh 1267 kWh £927 £127 £1,054 £17,457 16.6 yrs £3,614
7 kW 5474 kWh 3996 kWh 1478 kWh £1,081 £148 £1,229 £19,492 15.9 yrs £5,091
8 kW 6256 kWh 4567 kWh 1689 kWh £1,236 £169 £1,405 £21,526 15.3 yrs £6,568

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: £891, Upfront: £17,173, Break-even: 19.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1564 kWh 1173 kWh 391 kWh £317 £39 £357 £11,069 31.0 yrs £-3,939
3 kW 2346 kWh 1760 kWh 586 kWh £476 £59 £535 £13,104 24.5 yrs £-2,408
4 kW 3128 kWh 2346 kWh 782 kWh £635 £78 £713 £15,138 21.2 yrs £-877
5 kW 3910 kWh 2932 kWh 978 kWh £794 £98 £891 £17,173 19.3 yrs £653
6 kW 4692 kWh 3519 kWh 1173 kWh £952 £117 £1,070 £19,207 18.0 yrs £2,184
7 kW 5474 kWh 4106 kWh 1368 kWh £1,111 £137 £1,248 £21,242 17.0 yrs £3,714
8 kW 6256 kWh 4692 kWh 1564 kWh £1,270 £156 £1,426 £23,276 16.3 yrs £5,245

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: £905, Upfront: £19,623, Break-even: 21.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1564 kWh 1204 kWh 360 kWh £326 £36 £362 £13,519 37.4 yrs £-6,282
3 kW 2346 kWh 1806 kWh 540 kWh £489 £54 £543 £15,554 28.7 yrs £-4,698
4 kW 3128 kWh 2409 kWh 719 kWh £652 £72 £724 £17,588 24.3 yrs £-3,114
5 kW 3910 kWh 3011 kWh 899 kWh £815 £90 £905 £19,623 21.7 yrs £-1,530
6 kW 4692 kWh 3613 kWh 1079 kWh £978 £108 £1,086 £21,657 20.0 yrs £54
7 kW 5474 kWh 4215 kWh 1259 kWh £1,141 £126 £1,266 £23,692 18.7 yrs £1,638
8 kW 6256 kWh 4817 kWh 1439 kWh £1,304 £144 £1,447 £25,726 17.8 yrs £3,222

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 HS2

Figures below are tailored to HS2 — click through for full league tables.

Solar Payback Index Rank #2898 of 2997
13.4 years (UK avg 11.3 years)
~£606 /yr • £8,138 upfront
Standing-Charge Drag Rank #2919 of 2997
36.7% (UK avg 21.7%) drag on savings
£223 fixed • ~£606 /yr value

Your Area at a Glance

Your Electricity Rate
27.06p/kWh
Daily Fixed Charge
61.00p/day
Local Sunshine
782kWh/kW
A 1 kW system generates ~782 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

An Taobh Siar agus Nis, Sgìr Ùige agus Càrlabhagh, Loch a Tuath, Sgìre nan Loch, Steòrnabhagh a Tuath, Sgìre an Rubha, Steòrnabhagh a Deas

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

PA86 (Na h-Eileanan Siar)
≈0.6 km away
Local sunshine: ~782 kWh/kWp · +0% vs HS2
PA87 (Na h-Eileanan Siar)
≈1.9 km away
Local sunshine: ~780 kWh/kWp · -0% vs HS2
HS1 (Na h-Eileanan Siar)
≈2.2 km away
Local sunshine: ~780 kWh/kWp · -0% vs HS2
PA84 (Na h-Eileanan Siar)
≈43.4 km away
Local sunshine: ~792 kWh/kWp · +1% vs HS2
HS4 (Na h-Eileanan Siar)
≈43.4 km away
Local sunshine: ~791 kWh/kWp · +1% vs HS2
PA85 (Na h-Eileanan Siar)
≈45.3 km away
Local sunshine: ~719 kWh/kWp · -8% vs HS2

Similar sunshine across the UK

LL21 (Denbighshire)
~785 kWh/kWp · +0% vs HS2
CA8 (Cumberland)
~786 kWh/kWp · +1% vs HS2
LL27 (Conwy)
~777 kWh/kWp · -1% vs HS2