Solar explained to clever people by people who are not trying to be clever

Solar Panels in PH25 (Highland)

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

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
15.8 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£643
What you save every year
Profit Over 25 Years
£5,913
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 765 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)
765 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: £643, Upfront: £10,173, Break-even: 15.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1530 kWh 612 kWh 918 kWh £166 £92 £257 £4,069 15.8 yrs £1,078
3 kW 2295 kWh 918 kWh 1377 kWh £248 £138 £386 £6,104 15.8 yrs £1,617
4 kW 3060 kWh 1224 kWh 1836 kWh £331 £184 £515 £8,138 15.8 yrs £2,157
5 kW 3824 kWh 1530 kWh 2295 kWh £414 £229 £643 £10,173 15.8 yrs £2,696
6 kW 4589 kWh 1836 kWh 2754 kWh £497 £275 £772 £12,207 15.8 yrs £3,235
7 kW 5354 kWh 2142 kWh 3212 kWh £580 £321 £901 £14,242 15.8 yrs £3,774
8 kW 6119 kWh 2448 kWh 3671 kWh £662 £367 £1,029 £16,276 15.8 yrs £4,313

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: £774, Upfront: £12,273, Break-even: 15.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1530 kWh 918 kWh 612 kWh £248 £61 £310 £6,169 19.9 yrs £22
3 kW 2295 kWh 1377 kWh 918 kWh £373 £92 £464 £8,204 17.7 yrs £1,083
4 kW 3060 kWh 1836 kWh 1224 kWh £497 £122 £619 £10,238 16.5 yrs £2,144
5 kW 3824 kWh 2295 kWh 1530 kWh £621 £153 £774 £12,273 15.9 yrs £3,206
6 kW 4589 kWh 2754 kWh 1836 kWh £745 £184 £929 £14,307 15.4 yrs £4,267
7 kW 5354 kWh 3212 kWh 2142 kWh £869 £214 £1,083 £16,342 15.1 yrs £5,328
8 kW 6119 kWh 3671 kWh 2448 kWh £993 £245 £1,238 £18,376 14.8 yrs £6,389

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: £839, Upfront: £13,673, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1530 kWh 1071 kWh 459 kWh £290 £46 £336 £7,569 22.5 yrs £-856
3 kW 2295 kWh 1606 kWh 688 kWh £435 £69 £503 £9,604 19.1 yrs £466
4 kW 3060 kWh 2142 kWh 918 kWh £580 £92 £671 £11,638 17.3 yrs £1,788
5 kW 3824 kWh 2677 kWh 1147 kWh £724 £115 £839 £13,673 16.3 yrs £3,110
6 kW 4589 kWh 3212 kWh 1377 kWh £869 £138 £1,007 £15,707 15.6 yrs £4,433
7 kW 5354 kWh 3748 kWh 1606 kWh £1,014 £161 £1,175 £17,742 15.1 yrs £5,755
8 kW 6119 kWh 4283 kWh 1836 kWh £1,159 £184 £1,343 £19,776 14.7 yrs £7,077

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: £859, Upfront: £15,423, Break-even: 18.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1530 kWh 1117 kWh 413 kWh £302 £41 £343 £9,319 27.1 yrs £-2,449
3 kW 2295 kWh 1675 kWh 620 kWh £453 £62 £515 £11,354 22.0 yrs £-1,049
4 kW 3060 kWh 2233 kWh 826 kWh £604 £83 £687 £13,388 19.5 yrs £352
5 kW 3824 kWh 2792 kWh 1033 kWh £755 £103 £859 £15,423 18.0 yrs £1,752
6 kW 4589 kWh 3350 kWh 1239 kWh £907 £124 £1,030 £17,457 16.9 yrs £3,152
7 kW 5354 kWh 3909 kWh 1446 kWh £1,058 £145 £1,202 £19,492 16.2 yrs £4,553
8 kW 6119 kWh 4467 kWh 1652 kWh £1,209 £165 £1,374 £21,526 15.7 yrs £5,953

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: £872, Upfront: £17,173, Break-even: 19.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1530 kWh 1147 kWh 382 kWh £310 £38 £349 £11,069 31.7 yrs £-4,095
3 kW 2295 kWh 1721 kWh 574 kWh £466 £57 £523 £13,104 25.1 yrs £-2,642
4 kW 3060 kWh 2295 kWh 765 kWh £621 £76 £697 £15,138 21.7 yrs £-1,190
5 kW 3824 kWh 2868 kWh 956 kWh £776 £96 £872 £17,173 19.7 yrs £263
6 kW 4589 kWh 3442 kWh 1147 kWh £931 £115 £1,046 £19,207 18.4 yrs £1,715
7 kW 5354 kWh 4016 kWh 1339 kWh £1,087 £134 £1,220 £21,242 17.4 yrs £3,168
8 kW 6119 kWh 4589 kWh 1530 kWh £1,242 £153 £1,395 £23,276 16.7 yrs £4,621

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: £885, Upfront: £19,623, 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 1530 kWh 1178 kWh 352 kWh £319 £35 £354 £13,519 38.2 yrs £-6,440
3 kW 2295 kWh 1767 kWh 528 kWh £478 £53 £531 £15,554 29.3 yrs £-4,936
4 kW 3060 kWh 2356 kWh 704 kWh £637 £70 £708 £17,588 24.8 yrs £-3,431
5 kW 3824 kWh 2945 kWh 880 kWh £797 £88 £885 £19,623 22.2 yrs £-1,926
6 kW 4589 kWh 3534 kWh 1056 kWh £956 £106 £1,062 £21,657 20.4 yrs £-421
7 kW 5354 kWh 4123 kWh 1231 kWh £1,116 £123 £1,239 £23,692 19.1 yrs £1,083
8 kW 6119 kWh 4712 kWh 1407 kWh £1,275 £141 £1,416 £25,726 18.2 yrs £2,588

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.

Your Area at a Glance

Your Electricity Rate
27.06p/kWh
Daily Fixed Charge
61.00p/day
Local Sunshine
765kWh/kW
A 1 kW system generates ~765 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

Badenoch and Strathspey

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.