Independent solar numbers for your postcode using official UK data
Home Regions Guides
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality

Solar panel cost in Na h-Eileanan Siar (PA85)

See realistic solar installation costs, savings and payback for PA85 (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
16.3 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£623
What you save every year
Profit Over 25 Years
£5,405
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 28.36p/kWh with a 62.07p/day standing charge. Your postcode’s south-facing sunshine yield is 719 kWh/kW — 96 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 719 kWh per year on a south-facing roof. We value self-used electricity at 28.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
28.4p/kWh
Standing charge
62.1p/day
Sunshine yield (south)
719 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: £623, Upfront: £10,173, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 575 kWh 862 kWh £163 £86 £249 £4,069 16.3 yrs £916
3 kW 2156 kWh 862 kWh 1293 kWh £245 £129 £374 £6,104 16.3 yrs £1,374
4 kW 2874 kWh 1150 kWh 1724 kWh £326 £172 £498 £8,138 16.3 yrs £1,831
5 kW 3593 kWh 1437 kWh 2156 kWh £408 £216 £623 £10,173 16.3 yrs £2,289
6 kW 4311 kWh 1724 kWh 2587 kWh £489 £259 £748 £12,207 16.3 yrs £2,747
7 kW 5030 kWh 2012 kWh 3018 kWh £571 £302 £872 £14,242 16.3 yrs £3,205
8 kW 5748 kWh 2299 kWh 3449 kWh £652 £345 £997 £16,276 16.3 yrs £3,663

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: £755, Upfront: £12,273, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 862 kWh 575 kWh £245 £57 £302 £6,169 20.4 yrs £-129
3 kW 2156 kWh 1293 kWh 862 kWh £367 £86 £453 £8,204 18.1 yrs £857
4 kW 2874 kWh 1724 kWh 1150 kWh £489 £115 £604 £10,238 17.0 yrs £1,842
5 kW 3593 kWh 2156 kWh 1437 kWh £611 £144 £755 £12,273 16.3 yrs £2,828
6 kW 4311 kWh 2587 kWh 1724 kWh £734 £172 £906 £14,307 15.8 yrs £3,813
7 kW 5030 kWh 3018 kWh 2012 kWh £856 £201 £1,057 £16,342 15.5 yrs £4,799
8 kW 5748 kWh 3449 kWh 2299 kWh £978 £230 £1,208 £18,376 15.2 yrs £5,784

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: £821, Upfront: £13,673, Break-even: 16.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 1006 kWh 431 kWh £285 £43 £328 £7,569 23.0 yrs £-1,001
3 kW 2156 kWh 1509 kWh 647 kWh £428 £65 £493 £9,604 19.5 yrs £248
4 kW 2874 kWh 2012 kWh 862 kWh £571 £86 £657 £11,638 17.7 yrs £1,497
5 kW 3593 kWh 2515 kWh 1078 kWh £713 £108 £821 £13,673 16.7 yrs £2,747
6 kW 4311 kWh 3018 kWh 1293 kWh £856 £129 £985 £15,707 15.9 yrs £3,996
7 kW 5030 kWh 3521 kWh 1509 kWh £998 £151 £1,149 £17,742 15.4 yrs £5,246
8 kW 5748 kWh 4024 kWh 1724 kWh £1,141 £172 £1,314 £19,776 15.1 yrs £6,495

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: £841, Upfront: £15,423, Break-even: 18.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 1049 kWh 388 kWh £298 £39 £336 £9,319 27.7 yrs £-2,593
3 kW 2156 kWh 1574 kWh 582 kWh £446 £58 £504 £11,354 22.5 yrs £-1,264
4 kW 2874 kWh 2098 kWh 776 kWh £595 £78 £673 £13,388 19.9 yrs £64
5 kW 3593 kWh 2623 kWh 970 kWh £744 £97 £841 £15,423 18.3 yrs £1,393
6 kW 4311 kWh 3147 kWh 1164 kWh £893 £116 £1,009 £17,457 17.3 yrs £2,721
7 kW 5030 kWh 3672 kWh 1358 kWh £1,041 £136 £1,177 £19,492 16.6 yrs £4,050
8 kW 5748 kWh 4196 kWh 1552 kWh £1,190 £155 £1,345 £21,526 16.0 yrs £5,378

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: £854, Upfront: £17,173, Break-even: 20.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 1078 kWh 359 kWh £306 £36 £342 £11,069 32.4 yrs £-4,237
3 kW 2156 kWh 1617 kWh 539 kWh £458 £54 £512 £13,104 25.6 yrs £-2,856
4 kW 2874 kWh 2156 kWh 719 kWh £611 £72 £683 £15,138 22.2 yrs £-1,475
5 kW 3593 kWh 2694 kWh 898 kWh £764 £90 £854 £17,173 20.1 yrs £-94
6 kW 4311 kWh 3233 kWh 1078 kWh £917 £108 £1,025 £19,207 18.7 yrs £1,288
7 kW 5030 kWh 3772 kWh 1257 kWh £1,070 £126 £1,196 £21,242 17.8 yrs £2,669
8 kW 5748 kWh 4311 kWh 1437 kWh £1,223 £144 £1,366 £23,276 17.0 yrs £4,050

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: £867, Upfront: £19,623, Break-even: 22.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 1107 kWh 331 kWh £314 £33 £347 £13,519 39.0 yrs £-6,582
3 kW 2156 kWh 1660 kWh 496 kWh £471 £50 £520 £15,554 29.9 yrs £-5,148
4 kW 2874 kWh 2213 kWh 661 kWh £628 £66 £694 £17,588 25.4 yrs £-3,714
5 kW 3593 kWh 2766 kWh 826 kWh £785 £83 £867 £19,623 22.6 yrs £-2,280
6 kW 4311 kWh 3320 kWh 992 kWh £941 £99 £1,041 £21,657 20.8 yrs £-846
7 kW 5030 kWh 3873 kWh 1157 kWh £1,098 £116 £1,214 £23,692 19.5 yrs £588
8 kW 5748 kWh 4426 kWh 1322 kWh £1,255 £132 £1,387 £25,726 18.5 yrs £2,022

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 PA85

Figures below are tailored to PA85 — click through for full league tables.

Solar Payback Index Rank #2972 of 2997
16.3 years (UK avg 12.6 years)
~£498 /yr • £8,138 upfront
Standing-Charge Drag Rank #2968 of 2997
45.5% (UK avg 24.6%) drag on savings
£227 fixed • ~£498 /yr value
Aspect Penalty View ranking →
East −16.4% West −19.6%
Typical output loss versus a south-facing roof (lower is better)

Your Area at a Glance

Your Electricity Rate
28.36p/kWh
Daily Fixed Charge
62.07p/day
Local Sunshine
719kWh/kW
A 1 kW system generates ~719 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, 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

HS3 (Na h-Eileanan Siar)
≈0.2 km away
Local sunshine: ~719 kWh/kWp · +0% vs PA85
PA84 (Na h-Eileanan Siar)
≈7.4 km away
Local sunshine: ~792 kWh/kWp · +10% vs PA85
HS4 (Na h-Eileanan Siar)
≈7.4 km away
Local sunshine: ~791 kWh/kWp · +10% vs PA85
PA83 (Na h-Eileanan Siar)
≈17.6 km away
Local sunshine: ~809 kWh/kWp · +13% vs PA85
HS5 (Na h-Eileanan Siar)
≈17.7 km away
Local sunshine: ~812 kWh/kWp · +13% vs PA85
HS6 (Na h-Eileanan Siar)
≈42.1 km away
Local sunshine: ~818 kWh/kWp · +14% vs PA85

Similar sunshine across the UK

PA19 (Inverclyde)
~756 kWh/kWp · +5% vs PA85
DL11 (North Yorkshire)
~765 kWh/kWp · +6% vs PA85
G84 (Argyll and Bute)
~766 kWh/kWp · +7% vs PA85