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Solar panel cost in Perth and Kinross (PH18)

See realistic solar installation costs, savings and payback for PH18 (Perth and Kinross) 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
12.2 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£665
What you save every year
Profit Over 25 Years
£8,479
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 802 kWh/kW — 13 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 802 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)
802 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: £665, Upfront: £8,139, Break-even: 12.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1605 kWh 642 kWh 963 kWh £170 £96 £266 £3,256 12.2 yrs £2,062
3 kW 2407 kWh 963 kWh 1444 kWh £254 £144 £399 £4,883 12.2 yrs £3,093
4 kW 3210 kWh 1284 kWh 1926 kWh £339 £193 £532 £6,511 12.2 yrs £4,124
5 kW 4012 kWh 1605 kWh 2407 kWh £424 £241 £665 £8,139 12.2 yrs £5,155
6 kW 4814 kWh 1926 kWh 2889 kWh £509 £289 £798 £9,767 12.2 yrs £6,186
7 kW 5617 kWh 2247 kWh 3370 kWh £594 £337 £931 £11,394 12.2 yrs £7,217
8 kW 6419 kWh 2568 kWh 3851 kWh £678 £385 £1,064 £13,022 12.2 yrs £8,248

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: £796, Upfront: £10,239, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1605 kWh 963 kWh 642 kWh £254 £64 £319 £5,356 16.8 yrs £1,016
3 kW 2407 kWh 1444 kWh 963 kWh £382 £96 £478 £6,983 14.6 yrs £2,574
4 kW 3210 kWh 1926 kWh 1284 kWh £509 £128 £637 £8,611 13.5 yrs £4,132
5 kW 4012 kWh 2407 kWh 1605 kWh £636 £160 £796 £10,239 12.9 yrs £5,690
6 kW 4814 kWh 2889 kWh 1926 kWh £763 £193 £956 £11,867 12.4 yrs £7,248
7 kW 5617 kWh 3370 kWh 2247 kWh £890 £225 £1,115 £13,494 12.1 yrs £8,806
8 kW 6419 kWh 3851 kWh 2568 kWh £1,018 £257 £1,274 £15,122 11.9 yrs £10,364

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: £862, Upfront: £11,639, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1605 kWh 1123 kWh 481 kWh £297 £48 £345 £6,756 19.6 yrs £143
3 kW 2407 kWh 1685 kWh 722 kWh £445 £72 £517 £8,383 16.2 yrs £1,965
4 kW 3210 kWh 2247 kWh 963 kWh £594 £96 £690 £10,011 14.5 yrs £3,786
5 kW 4012 kWh 2808 kWh 1204 kWh £742 £120 £862 £11,639 13.5 yrs £5,608
6 kW 4814 kWh 3370 kWh 1444 kWh £890 £144 £1,035 £13,267 12.8 yrs £7,429
7 kW 5617 kWh 3932 kWh 1685 kWh £1,039 £169 £1,207 £14,894 12.3 yrs £9,251
8 kW 6419 kWh 4493 kWh 1926 kWh £1,187 £193 £1,380 £16,522 12.0 yrs £11,072

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: £882, Upfront: £13,389, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1605 kWh 1171 kWh 433 kWh £310 £43 £353 £8,506 24.1 yrs £-1,449
3 kW 2407 kWh 1757 kWh 650 kWh £464 £65 £529 £10,133 19.1 yrs £452
4 kW 3210 kWh 2343 kWh 867 kWh £619 £87 £706 £11,761 16.7 yrs £2,352
5 kW 4012 kWh 2929 kWh 1083 kWh £774 £108 £882 £13,389 15.2 yrs £4,253
6 kW 4814 kWh 3514 kWh 1300 kWh £929 £130 £1,059 £15,017 14.2 yrs £6,154
7 kW 5617 kWh 4100 kWh 1517 kWh £1,083 £152 £1,235 £16,644 13.5 yrs £8,054
8 kW 6419 kWh 4686 kWh 1733 kWh £1,238 £173 £1,411 £18,272 12.9 yrs £9,955

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: £895, Upfront: £15,139, Break-even: 16.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1605 kWh 1204 kWh 401 kWh £318 £40 £358 £10,256 28.6 yrs £-3,093
3 kW 2407 kWh 1805 kWh 602 kWh £477 £60 £537 £11,883 22.1 yrs £-1,140
4 kW 3210 kWh 2407 kWh 802 kWh £636 £80 £716 £13,511 18.9 yrs £813
5 kW 4012 kWh 3009 kWh 1003 kWh £795 £100 £895 £15,139 16.9 yrs £2,767
6 kW 4814 kWh 3611 kWh 1204 kWh £954 £120 £1,074 £16,767 15.6 yrs £4,720
7 kW 5617 kWh 4213 kWh 1404 kWh £1,113 £140 £1,253 £18,394 14.7 yrs £6,673
8 kW 6419 kWh 4814 kWh 1605 kWh £1,272 £160 £1,432 £20,022 14.0 yrs £8,626

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: £908, Upfront: £17,589, 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 1605 kWh 1236 kWh 369 kWh £326 £37 £363 £12,706 35.0 yrs £-5,438
3 kW 2407 kWh 1854 kWh 554 kWh £490 £55 £545 £14,333 26.3 yrs £-3,432
4 kW 3210 kWh 2471 kWh 738 kWh £653 £74 £727 £15,961 22.0 yrs £-1,426
5 kW 4012 kWh 3089 kWh 923 kWh £816 £92 £908 £17,589 19.4 yrs £580
6 kW 4814 kWh 3707 kWh 1107 kWh £979 £111 £1,090 £19,217 17.6 yrs £2,586
7 kW 5617 kWh 4325 kWh 1292 kWh £1,143 £129 £1,272 £20,844 16.4 yrs £4,592
8 kW 6419 kWh 4943 kWh 1476 kWh £1,306 £148 £1,454 £22,472 15.5 yrs £6,598

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 Perth and Kinross

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 PH18

Figures below are tailored to PH18 — click through for full league tables.

Solar Payback Index Rank #2891 of 2996
13.7 years (UK avg 10.8 years)
~£532 /yr • £7,307 upfront
Standing-Charge Drag Rank #2826 of 2996
39.5% (UK avg 26.6%) drag on savings
£210 fixed • ~£532 /yr value
Aspect Penalty View ranking →
East −19.4% West −19.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PH18

Monthly generation per kilowatt of solar panels

kWh 18 Jan 37 Feb 73 Mar 100 Apr 113 May 106 Jun 108 Jul 93 Aug 70 Sep 46 Oct 26 Nov 12 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 33.6% 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 22 kWh per month; the average month produces around 67 kWh. So a typical 4 kW home system would generate roughly 90 kWh in winter, or 267 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.42p/kWh
Daily Fixed Charge
57.55p/day
Local Sunshine
802kWh/kW
A 1 kW system generates ~802 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

Perth and Kinross (100%)

Areas Covered

Highland

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

PH16 (Perth and Kinross)
≈9.9 km away
Local sunshine: ~825 kWh/kWp · +3% vs PH18
PH9 (Perth and Kinross)
≈15.9 km away
Local sunshine: ~824 kWh/kWp · +3% vs PH18
PH15 (Perth and Kinross)
≈16.5 km away
Local sunshine: ~804 kWh/kWp · +0% vs PH18
PH8 (Perth and Kinross)
≈28.2 km away
Local sunshine: ~830 kWh/kWp · +3% vs PH18
PH19 (Highland)
≈30.4 km away
Local sunshine: ~754 kWh/kWp · -6% vs PH18
PH17 (Perth and Kinross)
≈33.1 km away
Local sunshine: ~751 kWh/kWp · -6% vs PH18

Similar sunshine across the UK

KA16 (East Ayrshire)
~803 kWh/kWp · +0% vs PH18
OL5 (Tameside)
~803 kWh/kWp · +0% vs PH18
CA9 (Westmorland and Furness)
~803 kWh/kWp · +0% vs PH18