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Solar Panels in G66 (East Dunbartonshire)

See if solar pays off for you in East Dunbartonshire — 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
14.8 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£823
What you save every year
Profit Over 25 Years
£8,370
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 Southern Scotland, the current unit rate is 25.84p/kWh with a 56.55p/day standing charge. Your postcode’s south-facing sunshine yield is 840 kWh/kW — 10 below the regional median (850).

Read the full story

A typical roof here lands around 6.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 840 kWh per year on a south-facing roof. We value self-used electricity at 25.8p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.8p/kWh
Standing charge
56.5p/day
Sunshine yield (south)
840 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: £686, Upfront: £10,173, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 672 kWh 1008 kWh £174 £101 £274 £4,069 14.8 yrs £1,418
3 kW 2519 kWh 1008 kWh 1512 kWh £260 £151 £412 £6,104 14.8 yrs £2,127
4 kW 3359 kWh 1344 kWh 2015 kWh £347 £202 £549 £8,138 14.8 yrs £2,836
5 kW 4199 kWh 1679 kWh 2519 kWh £434 £252 £686 £10,173 14.8 yrs £3,545
6 kW 5038 kWh 2015 kWh 3023 kWh £521 £302 £823 £12,207 14.8 yrs £4,254
7 kW 5878 kWh 2351 kWh 3527 kWh £608 £353 £960 £14,242 14.8 yrs £4,963
8 kW 6718 kWh 2687 kWh 4031 kWh £694 £403 £1,097 £16,276 14.8 yrs £5,672

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: £819, Upfront: £12,273, Break-even: 15.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 1008 kWh 672 kWh £260 £67 £328 £6,169 18.8 yrs £382
3 kW 2519 kWh 1512 kWh 1008 kWh £391 £101 £491 £8,204 16.7 yrs £1,623
4 kW 3359 kWh 2015 kWh 1344 kWh £521 £134 £655 £10,238 15.6 yrs £2,864
5 kW 4199 kWh 2519 kWh 1679 kWh £651 £168 £819 £12,273 15.0 yrs £4,106
6 kW 5038 kWh 3023 kWh 2015 kWh £781 £202 £983 £14,307 14.6 yrs £5,347
7 kW 5878 kWh 3527 kWh 2351 kWh £911 £235 £1,146 £16,342 14.3 yrs £6,588
8 kW 6718 kWh 4031 kWh 2687 kWh £1,042 £269 £1,310 £18,376 14.0 yrs £7,829

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: £885, Upfront: £13,673, Break-even: 15.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 1176 kWh 504 kWh £304 £50 £354 £7,569 21.4 yrs £-486
3 kW 2519 kWh 1763 kWh 756 kWh £456 £76 £531 £9,604 18.1 yrs £1,021
4 kW 3359 kWh 2351 kWh 1008 kWh £608 £101 £708 £11,638 16.4 yrs £2,529
5 kW 4199 kWh 2939 kWh 1260 kWh £759 £126 £885 £13,673 15.4 yrs £4,036
6 kW 5038 kWh 3527 kWh 1512 kWh £911 £151 £1,062 £15,707 14.8 yrs £5,543
7 kW 5878 kWh 4115 kWh 1763 kWh £1,063 £176 £1,240 £17,742 14.3 yrs £7,050
8 kW 6718 kWh 4702 kWh 2015 kWh £1,215 £202 £1,417 £19,776 14.0 yrs £8,557

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: £905, Upfront: £15,423, Break-even: 17.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 1226 kWh 453 kWh £317 £45 £362 £9,319 25.7 yrs £-2,076
3 kW 2519 kWh 1839 kWh 680 kWh £475 £68 £543 £11,354 20.9 yrs £-489
4 kW 3359 kWh 2452 kWh 907 kWh £634 £91 £724 £13,388 18.5 yrs £1,098
5 kW 4199 kWh 3065 kWh 1134 kWh £792 £113 £905 £15,423 17.0 yrs £2,685
6 kW 5038 kWh 3678 kWh 1360 kWh £950 £136 £1,086 £17,457 16.1 yrs £4,272
7 kW 5878 kWh 4291 kWh 1587 kWh £1,109 £159 £1,268 £19,492 15.4 yrs £5,859
8 kW 6718 kWh 4904 kWh 1814 kWh £1,267 £181 £1,449 £21,526 14.9 yrs £7,446

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: £919, Upfront: £17,173, Break-even: 18.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 1260 kWh 420 kWh £325 £42 £367 £11,069 30.1 yrs £-3,720
3 kW 2519 kWh 1889 kWh 630 kWh £488 £63 £551 £13,104 23.8 yrs £-2,080
4 kW 3359 kWh 2519 kWh 840 kWh £651 £84 £735 £15,138 20.6 yrs £-439
5 kW 4199 kWh 3149 kWh 1050 kWh £814 £105 £919 £17,173 18.7 yrs £1,201
6 kW 5038 kWh 3779 kWh 1260 kWh £976 £126 £1,102 £19,207 17.4 yrs £2,841
7 kW 5878 kWh 4409 kWh 1470 kWh £1,139 £147 £1,286 £21,242 16.5 yrs £4,481
8 kW 6718 kWh 5038 kWh 1679 kWh £1,302 £168 £1,470 £23,276 15.8 yrs £6,121

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: £932, Upfront: £19,623, Break-even: 21.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1679 kWh 1293 kWh 386 kWh £334 £39 £373 £13,519 36.3 yrs £-6,063
3 kW 2519 kWh 1940 kWh 579 kWh £501 £58 £559 £15,554 27.8 yrs £-4,370
4 kW 3359 kWh 2586 kWh 773 kWh £668 £77 £746 £17,588 23.6 yrs £-2,677
5 kW 4199 kWh 3233 kWh 966 kWh £835 £97 £932 £19,623 21.1 yrs £-983
6 kW 5038 kWh 3880 kWh 1159 kWh £1,002 £116 £1,118 £21,657 19.4 yrs £710
7 kW 5878 kWh 4526 kWh 1352 kWh £1,170 £135 £1,305 £23,692 18.2 yrs £2,403
8 kW 6718 kWh 5173 kWh 1545 kWh £1,337 £155 £1,491 £25,726 17.3 yrs £4,097

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 G66

Figures below are tailored to G66 — click through for full league tables.

Solar Payback Index Rank #2754 of 2997
12.9 years (UK avg 11.3 years)
~£943 /yr • £12,207 upfront
Standing-Charge Drag Rank #1819 of 2997
21.9% (UK avg 21.7%) drag on savings
£206 fixed • ~£943 /yr value

Your Area at a Glance

Your Electricity Rate
25.84p/kWh
Daily Fixed Charge
56.55p/day
Local Sunshine
840kWh/kW
A 1 kW system generates ~840 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
6.0kW
For houses & bungalows in this area

Local Property Data

Property Types

No EPC data available for this outcode

Coverage

East Dunbartonshire (98%)|North Lanarkshire (2%)

Areas Covered

Kirkintilloch East and North and Twechar, Lenzie and Kirkintilloch South, Bishopbriggs North and Campsie, Stepps, Chryston and Muirhead, Kilsyth

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.

Compare nearby areas

Nearby in Southern Scotland

G64 (East Dunbartonshire)
≈5.3 km away
Local sunshine: ~835 kWh/kWp · -1% vs G66
G65 (North Lanarkshire)
≈6.7 km away
Local sunshine: ~822 kWh/kWp · -2% vs G66
G33 (Glasgow City)
≈7.6 km away
Local sunshine: ~838 kWh/kWp · -0% vs G66
G21 (Glasgow City)
≈7.8 km away
Local sunshine: ~834 kWh/kWp · -1% vs G66
G34 (Glasgow City)
≈8.2 km away
Local sunshine: ~834 kWh/kWp · -1% vs G66
G58 (Glasgow City)
≈8.3 km away
Local sunshine: ~838 kWh/kWp · -0% vs G66

Similar sunshine across the UK

NE48 (Northumberland)
~840 kWh/kWp · +0% vs G66
PH4 (Perth and Kinross)
~839 kWh/kWp · -0% vs G66
SK10 (Cheshire East)
~839 kWh/kWp · -0% vs G66