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Solar panel cost in Highland (PH37)

See realistic solar installation costs, savings and payback for PH37 (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
19.1 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£532
What you save every year
Profit Over 25 Years
£3,132
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 693 kWh/kW — 122 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 693 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)
693 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: £532, Upfront: £10,173, 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 1386 kWh 554 kWh 832 kWh £130 £83 £213 £4,069 19.1 yrs £188
3 kW 2079 kWh 832 kWh 1247 kWh £195 £125 £319 £6,104 19.1 yrs £283
4 kW 2772 kWh 1109 kWh 1663 kWh £259 £166 £426 £8,138 19.1 yrs £377
5 kW 3465 kWh 1386 kWh 2079 kWh £324 £208 £532 £10,173 19.1 yrs £471
6 kW 4158 kWh 1663 kWh 2495 kWh £389 £249 £639 £12,207 19.1 yrs £565
7 kW 4851 kWh 1940 kWh 2910 kWh £454 £291 £745 £14,242 19.1 yrs £659
8 kW 5544 kWh 2217 kWh 3326 kWh £519 £333 £851 £16,276 19.1 yrs £754

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: £625, Upfront: £12,273, Break-even: 19.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1386 kWh 832 kWh 554 kWh £195 £55 £250 £6,169 24.7 yrs £-1,169
3 kW 2079 kWh 1247 kWh 832 kWh £292 £83 £375 £8,204 21.9 yrs £-703
4 kW 2772 kWh 1663 kWh 1109 kWh £389 £111 £500 £10,238 20.5 yrs £-238
5 kW 3465 kWh 2079 kWh 1386 kWh £486 £139 £625 £12,273 19.6 yrs £228
6 kW 4158 kWh 2495 kWh 1663 kWh £584 £166 £750 £14,307 19.1 yrs £694
7 kW 4851 kWh 2910 kWh 1940 kWh £681 £194 £875 £16,342 18.7 yrs £1,159
8 kW 5544 kWh 3326 kWh 2217 kWh £778 £222 £1,000 £18,376 18.4 yrs £1,625

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: £671, Upfront: £13,673, Break-even: 20.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1386 kWh 970 kWh 416 kWh £227 £42 £269 £7,569 28.2 yrs £-2,197
3 kW 2079 kWh 1455 kWh 624 kWh £341 £62 £403 £9,604 23.8 yrs £-1,546
4 kW 2772 kWh 1940 kWh 832 kWh £454 £83 £537 £11,638 21.7 yrs £-895
5 kW 3465 kWh 2425 kWh 1039 kWh £568 £104 £671 £13,673 20.4 yrs £-243
6 kW 4158 kWh 2910 kWh 1247 kWh £681 £125 £806 £15,707 19.5 yrs £408
7 kW 4851 kWh 3395 kWh 1455 kWh £795 £146 £940 £17,742 18.9 yrs £1,059
8 kW 5544 kWh 3880 kWh 1663 kWh £908 £166 £1,074 £19,776 18.4 yrs £1,711

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: £685, Upfront: £15,423, Break-even: 22.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1386 kWh 1012 kWh 374 kWh £237 £37 £274 £9,319 34.0 yrs £-3,836
3 kW 2079 kWh 1518 kWh 561 kWh £355 £56 £411 £11,354 27.6 yrs £-3,129
4 kW 2772 kWh 2023 kWh 748 kWh £473 £75 £548 £13,388 24.4 yrs £-2,422
5 kW 3465 kWh 2529 kWh 935 kWh £592 £94 £685 £15,423 22.5 yrs £-1,715
6 kW 4158 kWh 3035 kWh 1123 kWh £710 £112 £822 £17,457 21.2 yrs £-1,008
7 kW 4851 kWh 3541 kWh 1310 kWh £829 £131 £960 £19,492 20.3 yrs £-301
8 kW 5544 kWh 4047 kWh 1497 kWh £947 £150 £1,097 £21,526 19.6 yrs £406

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: £695, Upfront: £17,173, Break-even: 24.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1386 kWh 1039 kWh 346 kWh £243 £35 £278 £11,069 39.8 yrs £-5,512
3 kW 2079 kWh 1559 kWh 520 kWh £365 £52 £417 £13,104 31.4 yrs £-4,767
4 kW 2772 kWh 2079 kWh 693 kWh £486 £69 £556 £15,138 27.2 yrs £-4,023
5 kW 3465 kWh 2599 kWh 866 kWh £608 £87 £695 £17,173 24.7 yrs £-3,279
6 kW 4158 kWh 3118 kWh 1039 kWh £730 £104 £834 £19,207 23.0 yrs £-2,535
7 kW 4851 kWh 3638 kWh 1213 kWh £851 £121 £973 £21,242 21.8 yrs £-1,791
8 kW 5544 kWh 4158 kWh 1386 kWh £973 £139 £1,111 £23,276 20.9 yrs £-1,047

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: £704, Upfront: £19,623, Break-even: 27.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1386 kWh 1067 kWh 319 kWh £250 £32 £282 £13,519 48.0 yrs £-7,887
3 kW 2079 kWh 1601 kWh 478 kWh £375 £48 £422 £15,554 36.8 yrs £-7,106
4 kW 2772 kWh 2134 kWh 638 kWh £499 £64 £563 £17,588 31.2 yrs £-6,325
5 kW 3465 kWh 2668 kWh 797 kWh £624 £80 £704 £19,623 27.9 yrs £-5,543
6 kW 4158 kWh 3201 kWh 956 kWh £749 £96 £845 £21,657 25.6 yrs £-4,762
7 kW 4851 kWh 3735 kWh 1116 kWh £874 £112 £986 £23,692 24.0 yrs £-3,981
8 kW 5544 kWh 4269 kWh 1275 kWh £999 £128 £1,126 £25,726 22.8 yrs £-3,199

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 PH37

Figures below are tailored to PH37 — click through for full league tables.

Solar Payback Index Rank #2986 of 2997
16.9 years (UK avg 12.6 years)
~£481 /yr • £8,138 upfront
Standing-Charge Drag Rank #2984 of 2997
47.1% (UK avg 24.6%) drag on savings
£227 fixed • ~£481 /yr value
Aspect Penalty View ranking →
East −19.9% West −15.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PH37

Monthly generation per kilowatt of solar panels

kWh 9 Jan 26 Feb 59 Mar 94 Apr 107 May 99 Jun 97 Jul 84 Aug 59 Sep 37 Oct 16 Nov 6 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 23.6% 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 14 kWh per month; the average month produces around 58 kWh. So a typical 4 kW home system would generate roughly 54 kWh in winter, or 231 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.40p/kWh
Daily Fixed Charge
58.28p/day
Local Sunshine
693kWh/kW
A 1 kW system generates ~693 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, Fort William and Ardnamurchan

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

PH38 (Highland)
≈16.7 km away
Local sunshine: ~647 kWh/kWp · -7% vs PH37
PH33 (Highland)
≈22.0 km away
Local sunshine: ~668 kWh/kWp · -4% vs PH37
PH39 (Highland)
≈23.9 km away
Local sunshine: ~735 kWh/kWp · +6% vs PH37
PH40 (Highland)
≈24.6 km away
Local sunshine: ~732 kWh/kWp · +6% vs PH37
PH41 (Highland)
≈27.0 km away
Local sunshine: ~799 kWh/kWp · +15% vs PH37
PH49 (Highland)
≈29.3 km away
Local sunshine: ~627 kWh/kWp · -9% vs PH37

Similar sunshine across the UK

PA38 (Argyll and Bute)
~694 kWh/kWp · +0% vs PH37
IV54 (Highland)
~689 kWh/kWp · -1% vs PH37
PA36 (Argyll and Bute)
~698 kWh/kWp · +1% vs PH37