Solar panel cost in Highland (PH34)

See realistic solar installation costs, savings and payback for PH34 (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
18.9 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£539
What you save every year
Profit Over 25 Years
£3,290
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

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 701 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)
701 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: £539, Upfront: £10,173, 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 1402 kWh 561 kWh 841 kWh £131 £84 £215 £4,069 18.9 yrs £239
3 kW 2104 kWh 841 kWh 1262 kWh £197 £126 £323 £6,104 18.9 yrs £359
4 kW 2805 kWh 1122 kWh 1683 kWh £263 £168 £431 £8,138 18.9 yrs £478
5 kW 3506 kWh 1402 kWh 2104 kWh £328 £210 £539 £10,173 18.9 yrs £598
6 kW 4207 kWh 1683 kWh 2524 kWh £394 £252 £646 £12,207 18.9 yrs £717
7 kW 4908 kWh 1963 kWh 2945 kWh £459 £295 £754 £14,242 18.9 yrs £837
8 kW 5610 kWh 2244 kWh 3366 kWh £525 £337 £862 £16,276 18.9 yrs £957

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: £632, Upfront: £12,273, Break-even: 19.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1402 kWh 841 kWh 561 kWh £197 £56 £253 £6,169 24.4 yrs £-1,109
3 kW 2104 kWh 1262 kWh 841 kWh £295 £84 £379 £8,204 21.6 yrs £-614
4 kW 2805 kWh 1683 kWh 1122 kWh £394 £112 £506 £10,238 20.2 yrs £-118
5 kW 3506 kWh 2104 kWh 1402 kWh £492 £140 £632 £12,273 19.4 yrs £377
6 kW 4207 kWh 2524 kWh 1683 kWh £591 £168 £759 £14,307 18.9 yrs £873
7 kW 4908 kWh 2945 kWh 1963 kWh £689 £196 £885 £16,342 18.5 yrs £1,368
8 kW 5610 kWh 3366 kWh 2244 kWh £788 £224 £1,012 £18,376 18.2 yrs £1,863

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: £679, Upfront: £13,673, 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 1402 kWh 982 kWh 421 kWh £230 £42 £272 £7,569 27.8 yrs £-2,133
3 kW 2104 kWh 1473 kWh 631 kWh £345 £63 £408 £9,604 23.6 yrs £-1,450
4 kW 2805 kWh 1963 kWh 841 kWh £459 £84 £544 £11,638 21.4 yrs £-767
5 kW 3506 kWh 2454 kWh 1052 kWh £574 £105 £679 £13,673 20.1 yrs £-83
6 kW 4207 kWh 2945 kWh 1262 kWh £689 £126 £815 £15,707 19.3 yrs £600
7 kW 4908 kWh 3436 kWh 1473 kWh £804 £147 £951 £17,742 18.7 yrs £1,283
8 kW 5610 kWh 3927 kWh 1683 kWh £919 £168 £1,087 £19,776 18.2 yrs £1,967

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: £694, Upfront: £15,423, Break-even: 22.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1402 kWh 1024 kWh 379 kWh £240 £38 £277 £9,319 33.6 yrs £-3,771
3 kW 2104 kWh 1536 kWh 568 kWh £359 £57 £416 £11,354 27.3 yrs £-3,031
4 kW 2805 kWh 2048 kWh 757 kWh £479 £76 £555 £13,388 24.1 yrs £-2,291
5 kW 3506 kWh 2559 kWh 947 kWh £599 £95 £694 £15,423 22.2 yrs £-1,551
6 kW 4207 kWh 3071 kWh 1136 kWh £719 £114 £832 £17,457 21.0 yrs £-812
7 kW 4908 kWh 3583 kWh 1325 kWh £838 £133 £971 £19,492 20.1 yrs £-72
8 kW 5610 kWh 4095 kWh 1515 kWh £958 £151 £1,110 £21,526 19.4 yrs £668

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: £703, Upfront: £17,173, Break-even: 24.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1402 kWh 1052 kWh 351 kWh £246 £35 £281 £11,069 39.4 yrs £-5,445
3 kW 2104 kWh 1578 kWh 526 kWh £369 £53 £422 £13,104 31.1 yrs £-4,668
4 kW 2805 kWh 2104 kWh 701 kWh £492 £70 £562 £15,138 26.9 yrs £-3,891
5 kW 3506 kWh 2630 kWh 876 kWh £615 £88 £703 £17,173 24.4 yrs £-3,113
6 kW 4207 kWh 3155 kWh 1052 kWh £738 £105 £844 £19,207 22.8 yrs £-2,336
7 kW 4908 kWh 3681 kWh 1227 kWh £861 £123 £984 £21,242 21.6 yrs £-1,559
8 kW 5610 kWh 4207 kWh 1402 kWh £984 £140 £1,125 £23,276 20.7 yrs £-782

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: £712, Upfront: £19,623, Break-even: 27.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1402 kWh 1080 kWh 323 kWh £253 £32 £285 £13,519 47.4 yrs £-7,820
3 kW 2104 kWh 1620 kWh 484 kWh £379 £48 £427 £15,554 36.4 yrs £-7,005
4 kW 2805 kWh 2160 kWh 645 kWh £505 £65 £570 £17,588 30.9 yrs £-6,190
5 kW 3506 kWh 2700 kWh 806 kWh £632 £81 £712 £19,623 27.5 yrs £-5,376
6 kW 4207 kWh 3240 kWh 968 kWh £758 £97 £855 £21,657 25.3 yrs £-4,561
7 kW 4908 kWh 3779 kWh 1129 kWh £884 £113 £997 £23,692 23.8 yrs £-3,746
8 kW 5610 kWh 4319 kWh 1290 kWh £1,011 £129 £1,140 £25,726 22.6 yrs £-2,931

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.

Seasonal solar output in PH34

Monthly generation per kilowatt of solar panels

kWh 11 Jan 29 Feb 63 Mar 92 Apr 104 May 97 Jun 99 Jul 83 Aug 59 Sep 39 Oct 18 Nov 8 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 27.2% 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 16 kWh per month; the average month produces around 58 kWh. So a typical 4 kW home system would generate roughly 64 kWh in winter, or 234 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.40p/kWh
Daily Fixed Charge
58.28p/day
Local Sunshine
701kWh/kW
A 1 kW system generates ~701 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.