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Solar panel cost in Argyll and Bute (PA77)

See realistic solar installation costs, savings and payback for PA77 (Argyll and Bute) 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
14.7 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£690
What you save every year
Profit Over 25 Years
£7,087
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 899 kWh/kW — 84 above 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 899 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)
899 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: £690, Upfront: £10,173, Break-even: 14.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1798 kWh 719 kWh 1079 kWh £168 £108 £276 £4,069 14.7 yrs £1,454
3 kW 2697 kWh 1079 kWh 1618 kWh £252 £162 £414 £6,104 14.7 yrs £2,181
4 kW 3596 kWh 1438 kWh 2157 kWh £337 £216 £552 £8,138 14.7 yrs £2,908
5 kW 4495 kWh 1798 kWh 2697 kWh £421 £270 £690 £10,173 14.7 yrs £3,635
6 kW 5394 kWh 2157 kWh 3236 kWh £505 £324 £828 £12,207 14.7 yrs £4,362
7 kW 6293 kWh 2517 kWh 3776 kWh £589 £378 £967 £14,242 14.7 yrs £5,089
8 kW 7192 kWh 2877 kWh 4315 kWh £673 £431 £1,105 £16,276 14.7 yrs £5,817

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: £811, Upfront: £12,273, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1798 kWh 1079 kWh 719 kWh £252 £72 £324 £6,169 19.0 yrs £318
3 kW 2697 kWh 1618 kWh 1079 kWh £379 £108 £487 £8,204 16.9 yrs £1,527
4 kW 3596 kWh 2157 kWh 1438 kWh £505 £144 £649 £10,238 15.8 yrs £2,736
5 kW 4495 kWh 2697 kWh 1798 kWh £631 £180 £811 £12,273 15.1 yrs £3,945
6 kW 5394 kWh 3236 kWh 2157 kWh £757 £216 £973 £14,307 14.7 yrs £5,153
7 kW 6293 kWh 3776 kWh 2517 kWh £883 £252 £1,135 £16,342 14.4 yrs £6,362
8 kW 7192 kWh 4315 kWh 2877 kWh £1,010 £288 £1,297 £18,376 14.2 yrs £7,571

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: £871, Upfront: £13,673, Break-even: 15.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1798 kWh 1259 kWh 539 kWh £294 £54 £348 £7,569 21.7 yrs £-600
3 kW 2697 kWh 1888 kWh 809 kWh £442 £81 £523 £9,604 18.4 yrs £849
4 kW 3596 kWh 2517 kWh 1079 kWh £589 £108 £697 £11,638 16.7 yrs £2,299
5 kW 4495 kWh 3146 kWh 1348 kWh £736 £135 £871 £13,673 15.7 yrs £3,749
6 kW 5394 kWh 3776 kWh 1618 kWh £883 £162 £1,045 £15,707 15.0 yrs £5,199
7 kW 6293 kWh 4405 kWh 1888 kWh £1,031 £189 £1,220 £17,742 14.5 yrs £6,649
8 kW 7192 kWh 5034 kWh 2157 kWh £1,178 £216 £1,394 £19,776 14.2 yrs £8,099

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: £889, Upfront: £15,423, Break-even: 17.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1798 kWh 1312 kWh 485 kWh £307 £49 £356 £9,319 26.2 yrs £-2,206
3 kW 2697 kWh 1969 kWh 728 kWh £461 £73 £533 £11,354 21.3 yrs £-684
4 kW 3596 kWh 2625 kWh 971 kWh £614 £97 £711 £13,388 18.8 yrs £838
5 kW 4495 kWh 3281 kWh 1214 kWh £768 £121 £889 £15,423 17.3 yrs £2,360
6 kW 5394 kWh 3937 kWh 1456 kWh £921 £146 £1,067 £17,457 16.4 yrs £3,883
7 kW 6293 kWh 4594 kWh 1699 kWh £1,075 £170 £1,245 £19,492 15.7 yrs £5,405
8 kW 7192 kWh 5250 kWh 1942 kWh £1,228 £194 £1,423 £21,526 15.1 yrs £6,927

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: £901, Upfront: £17,173, 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 1798 kWh 1348 kWh 449 kWh £316 £45 £360 £11,069 30.7 yrs £-3,859
3 kW 2697 kWh 2023 kWh 674 kWh £473 £67 £541 £13,104 24.2 yrs £-2,289
4 kW 3596 kWh 2697 kWh 899 kWh £631 £90 £721 £15,138 21.0 yrs £-719
5 kW 4495 kWh 3371 kWh 1124 kWh £789 £112 £901 £17,173 19.1 yrs £851
6 kW 5394 kWh 4045 kWh 1348 kWh £947 £135 £1,081 £19,207 17.8 yrs £2,422
7 kW 6293 kWh 4719 kWh 1573 kWh £1,104 £157 £1,262 £21,242 16.8 yrs £3,992
8 kW 7192 kWh 5394 kWh 1798 kWh £1,262 £180 £1,442 £23,276 16.1 yrs £5,562

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: £913, Upfront: £19,623, Break-even: 21.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1798 kWh 1384 kWh 414 kWh £324 £41 £365 £13,519 37.0 yrs £-6,213
3 kW 2697 kWh 2077 kWh 620 kWh £486 £62 £548 £15,554 28.4 yrs £-4,595
4 kW 3596 kWh 2769 kWh 827 kWh £648 £83 £731 £17,588 24.1 yrs £-2,976
5 kW 4495 kWh 3461 kWh 1034 kWh £810 £103 £913 £19,623 21.5 yrs £-1,358
6 kW 5394 kWh 4153 kWh 1241 kWh £972 £124 £1,096 £21,657 19.8 yrs £261
7 kW 6293 kWh 4845 kWh 1447 kWh £1,134 £145 £1,279 £23,692 18.5 yrs £1,879
8 kW 7192 kWh 5538 kWh 1654 kWh £1,296 £165 £1,461 £25,726 17.6 yrs £3,498

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 PA77

Figures below are tailored to PA77 — click through for full league tables.

Solar Payback Index Rank #2028 of 2997
13.0 years (UK avg 12.6 years)
~£624 /yr • £8,138 upfront
Standing-Charge Drag Rank #2727 of 2997
36.3% (UK avg 24.6%) drag on savings
£227 fixed • ~£624 /yr value
Aspect Penalty View ranking →
East −19.7% West −23.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in PA77

Monthly generation per kilowatt of solar panels

kWh 19 Jan 39 Feb 78 Mar 116 Apr 133 May 126 Jun 120 Jul 106 Aug 74 Sep 49 Oct 25 Nov 15 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 32.7% 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 24 kWh per month; the average month produces around 75 kWh. So a typical 4 kW home system would generate roughly 98 kWh in winter, or 300 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.40p/kWh
Daily Fixed Charge
58.28p/day
Local Sunshine
899kWh/kW
A 1 kW system generates ~899 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

Argyll and Bute (100%)

Areas Covered

Oban South and the Isles

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

PA78 (Argyll and Bute)
≈26.3 km away
Local sunshine: ~869 kWh/kWp · -3% vs PA77
PA76 (Argyll and Bute)
≈35.3 km away
Local sunshine: ~884 kWh/kWp · -2% vs PA77
PA66 (Argyll and Bute)
≈38.2 km away
Local sunshine: ~894 kWh/kWp · -1% vs PA77
PA74 (Argyll and Bute)
≈40.6 km away
Local sunshine: ~816 kWh/kWp · -9% vs PA77
PA73 (Argyll and Bute)
≈44.0 km away
Local sunshine: ~772 kWh/kWp · -14% vs PA77
PA67 (Argyll and Bute)
≈45.1 km away
Local sunshine: ~869 kWh/kWp · -3% vs PA77

Similar sunshine across the UK

CF48 (Merthyr Tydfil)
~899 kWh/kWp · +0% vs PA77
ST4 (Stoke-on-Trent)
~899 kWh/kWp · +0% vs PA77
SK17 (High Peak)
~898 kWh/kWp · -0% vs PA77