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

Solar Panels in IV43 (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
16.3 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£624
What you save every year
Profit Over 25 Years
£5,438
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 742 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)
742 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: £624, Upfront: £10,173, 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 1485 kWh 594 kWh 891 kWh £161 £89 £250 £4,069 16.3 yrs £926
3 kW 2227 kWh 891 kWh 1336 kWh £241 £134 £375 £6,104 16.3 yrs £1,389
4 kW 2969 kWh 1188 kWh 1781 kWh £321 £178 £500 £8,138 16.3 yrs £1,853
5 kW 3711 kWh 1485 kWh 2227 kWh £402 £223 £624 £10,173 16.3 yrs £2,316
6 kW 4454 kWh 1781 kWh 2672 kWh £482 £267 £749 £12,207 16.3 yrs £2,779
7 kW 5196 kWh 2078 kWh 3118 kWh £562 £312 £874 £14,242 16.3 yrs £3,242
8 kW 5938 kWh 2375 kWh 3563 kWh £643 £356 £999 £16,276 16.3 yrs £3,705

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: £751, Upfront: £12,273, 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 1485 kWh 891 kWh 594 kWh £241 £59 £300 £6,169 20.5 yrs £-161
3 kW 2227 kWh 1336 kWh 891 kWh £362 £89 £451 £8,204 18.2 yrs £809
4 kW 2969 kWh 1781 kWh 1188 kWh £482 £119 £601 £10,238 17.0 yrs £1,779
5 kW 3711 kWh 2227 kWh 1485 kWh £603 £148 £751 £12,273 16.3 yrs £2,748
6 kW 4454 kWh 2672 kWh 1781 kWh £723 £178 £901 £14,307 15.9 yrs £3,718
7 kW 5196 kWh 3118 kWh 2078 kWh £844 £208 £1,051 £16,342 15.5 yrs £4,688
8 kW 5938 kWh 3563 kWh 2375 kWh £964 £238 £1,202 £18,376 15.3 yrs £5,657

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: £814, Upfront: £13,673, Break-even: 16.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1485 kWh 1039 kWh 445 kWh £281 £45 £326 £7,569 23.2 yrs £-1,054
3 kW 2227 kWh 1559 kWh 668 kWh £422 £67 £489 £9,604 19.7 yrs £169
4 kW 2969 kWh 2078 kWh 891 kWh £562 £89 £651 £11,638 17.9 yrs £1,392
5 kW 3711 kWh 2598 kWh 1113 kWh £703 £111 £814 £13,673 16.8 yrs £2,615
6 kW 4454 kWh 3118 kWh 1336 kWh £844 £134 £977 £15,707 16.1 yrs £3,838
7 kW 5196 kWh 3637 kWh 1559 kWh £984 £156 £1,140 £17,742 15.6 yrs £5,061
8 kW 5938 kWh 4157 kWh 1781 kWh £1,125 £178 £1,303 £19,776 15.2 yrs £6,284

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: £833, Upfront: £15,423, Break-even: 18.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1485 kWh 1084 kWh 401 kWh £293 £40 £333 £9,319 28.0 yrs £-2,652
3 kW 2227 kWh 1626 kWh 601 kWh £440 £60 £500 £11,354 22.7 yrs £-1,353
4 kW 2969 kWh 2167 kWh 802 kWh £587 £80 £667 £13,388 20.1 yrs £-54
5 kW 3711 kWh 2709 kWh 1002 kWh £733 £100 £833 £15,423 18.5 yrs £1,245
6 kW 4454 kWh 3251 kWh 1203 kWh £880 £120 £1,000 £17,457 17.5 yrs £2,544
7 kW 5196 kWh 3793 kWh 1403 kWh £1,026 £140 £1,167 £19,492 16.7 yrs £3,843
8 kW 5938 kWh 4335 kWh 1603 kWh £1,173 £160 £1,333 £21,526 16.1 yrs £5,141

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: £846, Upfront: £17,173, Break-even: 20.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1485 kWh 1113 kWh 371 kWh £301 £37 £338 £11,069 32.7 yrs £-4,301
3 kW 2227 kWh 1670 kWh 557 kWh £452 £56 £508 £13,104 25.8 yrs £-2,951
4 kW 2969 kWh 2227 kWh 742 kWh £603 £74 £677 £15,138 22.4 yrs £-1,602
5 kW 3711 kWh 2784 kWh 928 kWh £753 £93 £846 £17,173 20.3 yrs £-252
6 kW 4454 kWh 3340 kWh 1113 kWh £904 £111 £1,015 £19,207 18.9 yrs £1,098
7 kW 5196 kWh 3897 kWh 1299 kWh £1,055 £130 £1,184 £21,242 17.9 yrs £2,447
8 kW 5938 kWh 4454 kWh 1485 kWh £1,205 £148 £1,354 £23,276 17.2 yrs £3,797

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: £859, Upfront: £19,623, Break-even: 22.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1485 kWh 1143 kWh 341 kWh £309 £34 £343 £13,519 39.4 yrs £-6,650
3 kW 2227 kWh 1715 kWh 512 kWh £464 £51 £515 £15,554 30.2 yrs £-5,249
4 kW 2969 kWh 2286 kWh 683 kWh £619 £68 £687 £17,588 25.6 yrs £-3,849
5 kW 3711 kWh 2858 kWh 854 kWh £773 £85 £859 £19,623 22.9 yrs £-2,449
6 kW 4454 kWh 3429 kWh 1024 kWh £928 £102 £1,030 £21,657 21.0 yrs £-1,049
7 kW 5196 kWh 4001 kWh 1195 kWh £1,083 £120 £1,202 £23,692 19.7 yrs £352
8 kW 5938 kWh 4573 kWh 1366 kWh £1,237 £137 £1,374 £25,726 18.7 yrs £1,752

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
742kWh/kW
A 1 kW system generates ~742 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

Eilean á Chèo

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.