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Solar Panels in PH31 (Highland)

See if solar pays off for you in Highland — price, savings and payback in under a minute (official UK data).

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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
17.0 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£598
What you save every year
Profit Over 25 Years
£4,783
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 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 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)
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: £598, Upfront: £10,173, 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 1422 kWh 569 kWh 853 kWh £154 £85 £239 £4,069 17.0 yrs £717
3 kW 2133 kWh 853 kWh 1280 kWh £231 £128 £359 £6,104 17.0 yrs £1,075
4 kW 2845 kWh 1138 kWh 1707 kWh £308 £171 £479 £8,138 17.0 yrs £1,433
5 kW 3556 kWh 1422 kWh 2133 kWh £385 £213 £598 £10,173 17.0 yrs £1,792
6 kW 4267 kWh 1707 kWh 2560 kWh £462 £256 £718 £12,207 17.0 yrs £2,150
7 kW 4978 kWh 1991 kWh 2987 kWh £539 £299 £837 £14,242 17.0 yrs £2,508
8 kW 5689 kWh 2276 kWh 3413 kWh £616 £341 £957 £16,276 17.0 yrs £2,866

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: £720, Upfront: £12,273, Break-even: 17.1 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 £231 £57 £288 £6,169 21.4 yrs £-413
3 kW 2133 kWh 1280 kWh 853 kWh £346 £85 £432 £8,204 19.0 yrs £431
4 kW 2845 kWh 1707 kWh 1138 kWh £462 £114 £576 £10,238 17.8 yrs £1,274
5 kW 3556 kWh 2133 kWh 1422 kWh £577 £142 £720 £12,273 17.1 yrs £2,118
6 kW 4267 kWh 2560 kWh 1707 kWh £693 £171 £863 £14,307 16.6 yrs £2,961
7 kW 4978 kWh 2987 kWh 1991 kWh £808 £199 £1,007 £16,342 16.2 yrs £3,805
8 kW 5689 kWh 3413 kWh 2276 kWh £924 £228 £1,151 £18,376 16.0 yrs £4,649

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: £780, Upfront: £13,673, Break-even: 17.5 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 £269 £43 £312 £7,569 24.3 yrs £-1,328
3 kW 2133 kWh 1493 kWh 640 kWh £404 £64 £468 £9,604 20.5 yrs £-241
4 kW 2845 kWh 1991 kWh 853 kWh £539 £85 £624 £11,638 18.6 yrs £845
5 kW 3556 kWh 2489 kWh 1067 kWh £674 £107 £780 £13,673 17.5 yrs £1,931
6 kW 4267 kWh 2987 kWh 1280 kWh £808 £128 £936 £15,707 16.8 yrs £3,017
7 kW 4978 kWh 3485 kWh 1493 kWh £943 £149 £1,092 £17,742 16.2 yrs £4,103
8 kW 5689 kWh 3982 kWh 1707 kWh £1,078 £171 £1,248 £19,776 15.8 yrs £5,190

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: £798, Upfront: £15,423, 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 1422 kWh 1038 kWh 384 kWh £281 £38 £319 £9,319 29.2 yrs £-2,932
3 kW 2133 kWh 1557 kWh 576 kWh £421 £58 £479 £11,354 23.7 yrs £-1,773
4 kW 2845 kWh 2076 kWh 768 kWh £562 £77 £639 £13,388 21.0 yrs £-614
5 kW 3556 kWh 2596 kWh 960 kWh £702 £96 £798 £15,423 19.3 yrs £545
6 kW 4267 kWh 3115 kWh 1152 kWh £843 £115 £958 £17,457 18.2 yrs £1,704
7 kW 4978 kWh 3634 kWh 1344 kWh £983 £134 £1,118 £19,492 17.4 yrs £2,863
8 kW 5689 kWh 4153 kWh 1536 kWh £1,124 £154 £1,277 £21,526 16.9 yrs £4,022

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: £811, Upfront: £17,173, Break-even: 21.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 1067 kWh 356 kWh £289 £36 £324 £11,069 34.1 yrs £-4,585
3 kW 2133 kWh 1600 kWh 533 kWh £433 £53 £486 £13,104 26.9 yrs £-3,377
4 kW 2845 kWh 2133 kWh 711 kWh £577 £71 £648 £15,138 23.3 yrs £-2,170
5 kW 3556 kWh 2667 kWh 889 kWh £722 £89 £811 £17,173 21.2 yrs £-962
6 kW 4267 kWh 3200 kWh 1067 kWh £866 £107 £973 £19,207 19.7 yrs £245
7 kW 4978 kWh 3733 kWh 1244 kWh £1,010 £124 £1,135 £21,242 18.7 yrs £1,453
8 kW 5689 kWh 4267 kWh 1422 kWh £1,155 £142 £1,297 £23,276 17.9 yrs £2,660

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: £823, Upfront: £19,623, Break-even: 23.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1422 kWh 1095 kWh 327 kWh £296 £33 £329 £13,519 41.1 yrs £-6,938
3 kW 2133 kWh 1643 kWh 491 kWh £445 £49 £494 £15,554 31.5 yrs £-5,682
4 kW 2845 kWh 2190 kWh 654 kWh £593 £65 £658 £17,588 26.7 yrs £-4,426
5 kW 3556 kWh 2738 kWh 818 kWh £741 £82 £823 £19,623 23.9 yrs £-3,170
6 kW 4267 kWh 3285 kWh 981 kWh £889 £98 £987 £21,657 21.9 yrs £-1,914
7 kW 4978 kWh 3833 kWh 1145 kWh £1,037 £114 £1,152 £23,692 20.6 yrs £-658
8 kW 5689 kWh 4381 kWh 1308 kWh £1,185 £131 £1,316 £25,726 19.5 yrs £598

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
14.8 years (UK avg 11.3 years)
~£551 /yr • £8,138 upfront
Standing-Charge Drag Rank #2976 of 2997
40.4% (UK avg 21.7%) drag on savings
£223 fixed • ~£551 /yr value

Your Area at a Glance

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

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