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Solar panel cost in Highland (PH31)

See realistic solar installation costs, savings and payback for PH31 (Highland) 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
18.6 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£546
What you save every year
Profit Over 25 Years
£3,481
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 711 kWh/kW — 104 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 711 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)
711 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: £546, Upfront: £10,173, Break-even: 18.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 569 kWh 853 kWh £133 £85 £218 £4,069 18.6 yrs £300
3 kW 2133 kWh 853 kWh 1280 kWh £200 £128 £328 £6,104 18.6 yrs £450
4 kW 2845 kWh 1138 kWh 1707 kWh £266 £171 £437 £8,138 18.6 yrs £600
5 kW 3556 kWh 1422 kWh 2133 kWh £333 £213 £546 £10,173 18.6 yrs £750
6 kW 4267 kWh 1707 kWh 2560 kWh £399 £256 £655 £12,207 18.6 yrs £900
7 kW 4978 kWh 1991 kWh 2987 kWh £466 £299 £765 £14,242 18.6 yrs £1,051
8 kW 5689 kWh 2276 kWh 3413 kWh £532 £341 £874 £16,276 18.6 yrs £1,201

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: £641, Upfront: £12,273, Break-even: 19.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 853 kWh 569 kWh £200 £57 £257 £6,169 24.0 yrs £-1,038
3 kW 2133 kWh 1280 kWh 853 kWh £300 £85 £385 £8,204 21.3 yrs £-506
4 kW 2845 kWh 1707 kWh 1138 kWh £399 £114 £513 £10,238 20.0 yrs £25
5 kW 3556 kWh 2133 kWh 1422 kWh £499 £142 £641 £12,273 19.1 yrs £556
6 kW 4267 kWh 2560 kWh 1707 kWh £599 £171 £770 £14,307 18.6 yrs £1,087
7 kW 4978 kWh 2987 kWh 1991 kWh £699 £199 £898 £16,342 18.2 yrs £1,619
8 kW 5689 kWh 3413 kWh 2276 kWh £799 £228 £1,026 £18,376 17.9 yrs £2,150

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: £689, Upfront: £13,673, 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 1422 kWh 996 kWh 427 kWh £233 £43 £276 £7,569 27.5 yrs £-2,056
3 kW 2133 kWh 1493 kWh 640 kWh £349 £64 £413 £9,604 23.2 yrs £-1,335
4 kW 2845 kWh 1991 kWh 853 kWh £466 £85 £551 £11,638 21.1 yrs £-613
5 kW 3556 kWh 2489 kWh 1067 kWh £582 £107 £689 £13,673 19.8 yrs £109
6 kW 4267 kWh 2987 kWh 1280 kWh £699 £128 £827 £15,707 19.0 yrs £831
7 kW 4978 kWh 3485 kWh 1493 kWh £815 £149 £965 £17,742 18.4 yrs £1,553
8 kW 5689 kWh 3982 kWh 1707 kWh £932 £171 £1,103 £19,776 17.9 yrs £2,275

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: £703, Upfront: £15,423, Break-even: 21.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 1038 kWh 384 kWh £243 £38 £281 £9,319 33.1 yrs £-3,692
3 kW 2133 kWh 1557 kWh 576 kWh £364 £58 £422 £11,354 26.9 yrs £-2,913
4 kW 2845 kWh 2076 kWh 768 kWh £486 £77 £563 £13,388 23.8 yrs £-2,134
5 kW 3556 kWh 2596 kWh 960 kWh £607 £96 £703 £15,423 21.9 yrs £-1,355
6 kW 4267 kWh 3115 kWh 1152 kWh £729 £115 £844 £17,457 20.7 yrs £-576
7 kW 4978 kWh 3634 kWh 1344 kWh £850 £134 £985 £19,492 19.8 yrs £203
8 kW 5689 kWh 4153 kWh 1536 kWh £972 £154 £1,125 £21,526 19.1 yrs £982

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: £713, Upfront: £17,173, Break-even: 24.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 1067 kWh 356 kWh £250 £36 £285 £11,069 38.8 yrs £-5,366
3 kW 2133 kWh 1600 kWh 533 kWh £374 £53 £428 £13,104 30.6 yrs £-4,549
4 kW 2845 kWh 2133 kWh 711 kWh £499 £71 £570 £15,138 26.5 yrs £-3,732
5 kW 3556 kWh 2667 kWh 889 kWh £624 £89 £713 £17,173 24.1 yrs £-2,914
6 kW 4267 kWh 3200 kWh 1067 kWh £749 £107 £855 £19,207 22.5 yrs £-2,097
7 kW 4978 kWh 3733 kWh 1244 kWh £874 £124 £998 £21,242 21.3 yrs £-1,280
8 kW 5689 kWh 4267 kWh 1422 kWh £998 £142 £1,141 £23,276 20.4 yrs £-463

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: £722, Upfront: £19,623, Break-even: 27.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 1095 kWh 327 kWh £256 £33 £289 £13,519 46.8 yrs £-7,740
3 kW 2133 kWh 1643 kWh 491 kWh £384 £49 £433 £15,554 35.9 yrs £-6,884
4 kW 2845 kWh 2190 kWh 654 kWh £513 £65 £578 £17,588 30.4 yrs £-6,029
5 kW 3556 kWh 2738 kWh 818 kWh £641 £82 £722 £19,623 27.2 yrs £-5,174
6 kW 4267 kWh 3285 kWh 981 kWh £769 £98 £867 £21,657 25.0 yrs £-4,319
7 kW 4978 kWh 3833 kWh 1145 kWh £897 £114 £1,011 £23,692 23.4 yrs £-3,463
8 kW 5689 kWh 4381 kWh 1308 kWh £1,025 £131 £1,156 £25,726 22.3 yrs £-2,608

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 PH31

Figures below are tailored to PH31 — click through for full league tables.

Solar Payback Index Rank #2979 of 2997
16.5 years (UK avg 12.6 years)
~£493 /yr • £8,138 upfront
Standing-Charge Drag Rank #2977 of 2997
46.0% (UK avg 24.6%) drag on savings
£227 fixed • ~£493 /yr value
Aspect Penalty View ranking →
East −16.6% West −17.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PH31

Monthly generation per kilowatt of solar panels

kWh 11 Jan 30 Feb 64 Mar 92 Apr 105 May 98 Jun 100 Jul 85 Aug 59 Sep 40 Oct 18 Nov 10 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 28.6% 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 17 kWh per month; the average month produces around 59 kWh. So a typical 4 kW home system would generate roughly 68 kWh in winter, or 237 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.40p/kWh
Daily Fixed Charge
58.28p/day
Local Sunshine
711kWh/kW
A 1 kW system generates ~711 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

Highland (100%)

Areas Covered

Caol and Mallaig

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

PH34 (Highland)
≈5.1 km away
Local sunshine: ~701 kWh/kWp · -1% vs PH31
PH30 (Highland)
≈18.1 km away
Local sunshine: ~740 kWh/kWp · +4% vs PH31
PH33 (Highland)
≈18.1 km away
Local sunshine: ~668 kWh/kWp · -6% vs PH31
PH35 (Highland)
≈19.9 km away
Local sunshine: ~687 kWh/kWp · -3% vs PH31
PH50 (Highland)
≈21.1 km away
Local sunshine: ~653 kWh/kWp · -8% vs PH31
PA40 (Highland)
≈21.1 km away
Local sunshine: ~633 kWh/kWp · -11% vs PH31

Similar sunshine across the UK

PA19 (Inverclyde)
~756 kWh/kWp · +6% vs PH31
IV26 (Highland)
~711 kWh/kWp · -0% vs PH31
IV41 (Highland)
~712 kWh/kWp · +0% vs PH31