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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
13.7 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£595
What you save every year
Profit Over 25 Years
£6,742
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 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 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)
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: £595, Upfront: £8,139, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1437 kWh 575 kWh 862 kWh £152 £86 £238 £3,256 13.7 yrs £1,506
3 kW 2156 kWh 862 kWh 1293 kWh £228 £129 £357 £4,883 13.7 yrs £2,259
4 kW 2874 kWh 1150 kWh 1724 kWh £304 £172 £476 £6,511 13.7 yrs £3,012
5 kW 3593 kWh 1437 kWh 2156 kWh £380 £216 £595 £8,139 13.7 yrs £3,765
6 kW 4311 kWh 1724 kWh 2587 kWh £456 £259 £714 £9,767 13.7 yrs £4,519
7 kW 5030 kWh 2012 kWh 3018 kWh £532 £302 £833 £11,394 13.7 yrs £5,272
8 kW 5748 kWh 2299 kWh 3449 kWh £607 £345 £952 £13,022 13.7 yrs £6,025

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: £713, Upfront: £10,239, Break-even: 14.4 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 £228 £57 £285 £5,356 18.8 yrs £350
3 kW 2156 kWh 1293 kWh 862 kWh £342 £86 £428 £6,983 16.3 yrs £1,575
4 kW 2874 kWh 1724 kWh 1150 kWh £456 £115 £571 £8,611 15.1 yrs £2,800
5 kW 3593 kWh 2156 kWh 1437 kWh £569 £144 £713 £10,239 14.4 yrs £4,025
6 kW 4311 kWh 2587 kWh 1724 kWh £683 £172 £856 £11,867 13.9 yrs £5,250
7 kW 5030 kWh 3018 kWh 2012 kWh £797 £201 £998 £13,494 13.5 yrs £6,475
8 kW 5748 kWh 3449 kWh 2299 kWh £911 £230 £1,141 £15,122 13.3 yrs £7,700

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: £772, Upfront: £11,639, 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 1437 kWh 1006 kWh 431 kWh £266 £43 £309 £6,756 21.9 yrs £-578
3 kW 2156 kWh 1509 kWh 647 kWh £399 £65 £463 £8,383 18.1 yrs £883
4 kW 2874 kWh 2012 kWh 862 kWh £532 £86 £618 £10,011 16.2 yrs £2,344
5 kW 3593 kWh 2515 kWh 1078 kWh £664 £108 £772 £11,639 15.1 yrs £3,805
6 kW 4311 kWh 3018 kWh 1293 kWh £797 £129 £927 £13,267 14.3 yrs £5,266
7 kW 5030 kWh 3521 kWh 1509 kWh £930 £151 £1,081 £14,894 13.8 yrs £6,727
8 kW 5748 kWh 4024 kWh 1724 kWh £1,063 £172 £1,235 £16,522 13.4 yrs £8,188

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: £790, Upfront: £13,389, Break-even: 17.0 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 £277 £39 £316 £8,506 26.9 yrs £-2,186
3 kW 2156 kWh 1574 kWh 582 kWh £416 £58 £474 £10,133 21.4 yrs £-655
4 kW 2874 kWh 2098 kWh 776 kWh £554 £78 £632 £11,761 18.6 yrs £877
5 kW 3593 kWh 2623 kWh 970 kWh £693 £97 £790 £13,389 17.0 yrs £2,409
6 kW 4311 kWh 3147 kWh 1164 kWh £831 £116 £948 £15,017 15.8 yrs £3,941
7 kW 5030 kWh 3672 kWh 1358 kWh £970 £136 £1,106 £16,644 15.1 yrs £5,472
8 kW 5748 kWh 4196 kWh 1552 kWh £1,109 £155 £1,264 £18,272 14.5 yrs £7,004

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: £802, Upfront: £15,139, Break-even: 18.9 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 £285 £36 £321 £10,256 32.0 yrs £-3,842
3 kW 2156 kWh 1617 kWh 539 kWh £427 £54 £481 £11,883 24.7 yrs £-2,263
4 kW 2874 kWh 2156 kWh 719 kWh £569 £72 £641 £13,511 21.1 yrs £-684
5 kW 3593 kWh 2694 kWh 898 kWh £712 £90 £802 £15,139 18.9 yrs £895
6 kW 4311 kWh 3233 kWh 1078 kWh £854 £108 £962 £16,767 17.4 yrs £2,474
7 kW 5030 kWh 3772 kWh 1257 kWh £997 £126 £1,122 £18,394 16.4 yrs £4,053
8 kW 5748 kWh 4311 kWh 1437 kWh £1,139 £144 £1,283 £20,022 15.6 yrs £5,632

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: £813, Upfront: £17,589, Break-even: 21.6 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 £292 £33 £325 £12,706 39.0 yrs £-6,198
3 kW 2156 kWh 1660 kWh 496 kWh £439 £50 £488 £14,333 29.4 yrs £-4,572
4 kW 2874 kWh 2213 kWh 661 kWh £585 £66 £651 £15,961 24.5 yrs £-2,945
5 kW 3593 kWh 2766 kWh 826 kWh £731 £83 £813 £17,589 21.6 yrs £-1,319
6 kW 4311 kWh 3320 kWh 992 kWh £877 £99 £976 £19,217 19.7 yrs £307
7 kW 5030 kWh 3873 kWh 1157 kWh £1,023 £116 £1,139 £20,844 18.3 yrs £1,933
8 kW 5748 kWh 4426 kWh 1322 kWh £1,169 £132 £1,302 £22,472 17.3 yrs £3,559

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 PA85

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

Solar Payback Index Rank #2974 of 2996
15.4 years (UK avg 10.8 years)
~£476 /yr • £7,307 upfront
Standing-Charge Drag Rank #2968 of 2996
44.1% (UK avg 26.6%) drag on savings
£210 fixed • ~£476 /yr value
Aspect Penalty View ranking →
East −16.4% West −19.6%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PA85

Monthly generation per kilowatt of solar panels

kWh 7 Jan 28 Feb 64 Mar 97 Apr 111 May 107 Jun 100 Jul 86 Aug 61 Sep 40 Oct 16 Nov 2 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 20.8% 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 12 kWh per month; the average month produces around 60 kWh. So a typical 4 kW home system would generate roughly 50 kWh in winter, or 239 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/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, 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

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