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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in G76 (East Renfrewshire)

See if solar pays off for you in East Renfrewshire — 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
15.6 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£783
What you save every year
Profit Over 25 Years
£7,365
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 799 kWh/kW — 51 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 799 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)
799 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: £652, Upfront: £10,173, Break-even: 15.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1597 kWh 639 kWh 958 kWh £165 £96 £261 £4,069 15.6 yrs £1,150
3 kW 2396 kWh 958 kWh 1438 kWh £248 £144 £391 £6,104 15.6 yrs £1,725
4 kW 3195 kWh 1278 kWh 1917 kWh £330 £192 £522 £8,138 15.6 yrs £2,300
5 kW 3994 kWh 1597 kWh 2396 kWh £413 £240 £652 £10,173 15.6 yrs £2,876
6 kW 4792 kWh 1917 kWh 2875 kWh £495 £288 £783 £12,207 15.6 yrs £3,451
7 kW 5591 kWh 2236 kWh 3355 kWh £578 £335 £913 £14,242 15.6 yrs £4,026
8 kW 6390 kWh 2556 kWh 3834 kWh £660 £383 £1,044 £16,276 15.6 yrs £4,601

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: £779, Upfront: £12,273, 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 1597 kWh 958 kWh 639 kWh £248 £64 £312 £6,169 19.8 yrs £62
3 kW 2396 kWh 1438 kWh 958 kWh £372 £96 £467 £8,204 17.6 yrs £1,144
4 kW 3195 kWh 1917 kWh 1278 kWh £495 £128 £623 £10,238 16.4 yrs £2,225
5 kW 3994 kWh 2396 kWh 1597 kWh £619 £160 £779 £12,273 15.8 yrs £3,306
6 kW 4792 kWh 2875 kWh 1917 kWh £743 £192 £935 £14,307 15.3 yrs £4,387
7 kW 5591 kWh 3355 kWh 2236 kWh £867 £224 £1,090 £16,342 15.0 yrs £5,468
8 kW 6390 kWh 3834 kWh 2556 kWh £991 £256 £1,246 £18,376 14.7 yrs £6,549

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: £842, Upfront: £13,673, Break-even: 16.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1597 kWh 1118 kWh 479 kWh £289 £48 £337 £7,569 22.5 yrs £-832
3 kW 2396 kWh 1677 kWh 719 kWh £433 £72 £505 £9,604 19.0 yrs £503
4 kW 3195 kWh 2236 kWh 958 kWh £578 £96 £674 £11,638 17.3 yrs £1,837
5 kW 3994 kWh 2796 kWh 1198 kWh £722 £120 £842 £13,673 16.2 yrs £3,171
6 kW 4792 kWh 3355 kWh 1438 kWh £867 £144 £1,011 £15,707 15.5 yrs £4,505
7 kW 5591 kWh 3914 kWh 1677 kWh £1,011 £168 £1,179 £17,742 15.0 yrs £5,839
8 kW 6390 kWh 4473 kWh 1917 kWh £1,156 £192 £1,347 £19,776 14.7 yrs £7,174

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: £861, Upfront: £15,423, Break-even: 17.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1597 kWh 1166 kWh 431 kWh £301 £43 £344 £9,319 27.1 yrs £-2,430
3 kW 2396 kWh 1749 kWh 647 kWh £452 £65 £517 £11,354 22.0 yrs £-1,020
4 kW 3195 kWh 2332 kWh 863 kWh £603 £86 £689 £13,388 19.4 yrs £390
5 kW 3994 kWh 2915 kWh 1078 kWh £753 £108 £861 £15,423 17.9 yrs £1,801
6 kW 4792 kWh 3498 kWh 1294 kWh £904 £129 £1,033 £17,457 16.9 yrs £3,211
7 kW 5591 kWh 4082 kWh 1510 kWh £1,055 £151 £1,206 £19,492 16.2 yrs £4,621
8 kW 6390 kWh 4665 kWh 1725 kWh £1,205 £173 £1,378 £21,526 15.6 yrs £6,031

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: £874, 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 1597 kWh 1198 kWh 399 kWh £310 £40 £350 £11,069 31.7 yrs £-4,079
3 kW 2396 kWh 1797 kWh 599 kWh £464 £60 £524 £13,104 25.0 yrs £-2,618
4 kW 3195 kWh 2396 kWh 799 kWh £619 £80 £699 £15,138 21.7 yrs £-1,157
5 kW 3994 kWh 2995 kWh 998 kWh £774 £100 £874 £17,173 19.7 yrs £304
6 kW 4792 kWh 3594 kWh 1198 kWh £929 £120 £1,049 £19,207 18.3 yrs £1,764
7 kW 5591 kWh 4193 kWh 1398 kWh £1,084 £140 £1,223 £21,242 17.4 yrs £3,225
8 kW 6390 kWh 4792 kWh 1597 kWh £1,238 £160 £1,398 £23,276 16.6 yrs £4,686

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: £886, Upfront: £19,623, Break-even: 22.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1597 kWh 1230 kWh 367 kWh £318 £37 £355 £13,519 38.1 yrs £-6,427
3 kW 2396 kWh 1845 kWh 551 kWh £477 £55 £532 £15,554 29.2 yrs £-4,916
4 kW 3195 kWh 2460 kWh 735 kWh £636 £73 £709 £17,588 24.8 yrs £-3,405
5 kW 3994 kWh 3075 kWh 919 kWh £795 £92 £886 £19,623 22.1 yrs £-1,893
6 kW 4792 kWh 3690 kWh 1102 kWh £954 £110 £1,064 £21,657 20.4 yrs £-382
7 kW 5591 kWh 4305 kWh 1286 kWh £1,112 £129 £1,241 £23,692 19.1 yrs £1,129
8 kW 6390 kWh 4920 kWh 1470 kWh £1,271 £147 £1,418 £25,726 18.1 yrs £2,641

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 G76

Figures below are tailored to G76 — click through for full league tables.

Solar Payback Index Rank #2925 of 2997
13.6 years (UK avg 11.3 years)
~£897 /yr • £12,207 upfront
Standing-Charge Drag Rank #2067 of 2997
23.0% (UK avg 21.7%) drag on savings
£206 fixed • ~£897 /yr value

Your Area at a Glance

Your Electricity Rate
25.84p/kWh
Daily Fixed Charge
56.55p/day
Local Sunshine
799kWh/kW
A 1 kW system generates ~799 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 Renfrewshire (90%)|Glasgow City (7%)|South Lanarkshire (2%)

Areas Covered

Clarkston, Netherlee and Williamwood, Newton Mearns South and Eaglesham, Linn, East Kilbride West

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

G46 (East Renfrewshire)
≈2.7 km away
Local sunshine: ~833 kWh/kWp · +4% vs G76
G44 (Glasgow City)
≈3.2 km away
Local sunshine: ~832 kWh/kWp · +4% vs G76
G45 (Glasgow City)
≈3.4 km away
Local sunshine: ~836 kWh/kWp · +5% vs G76
G43 (Glasgow City)
≈3.8 km away
Local sunshine: ~836 kWh/kWp · +5% vs G76
G79 (South Lanarkshire)
≈3.8 km away
Local sunshine: ~831 kWh/kWp · +4% vs G76
G77 (East Renfrewshire)
≈3.8 km away
Local sunshine: ~818 kWh/kWp · +2% vs G76

Similar sunshine across the UK

PH41 (Highland)
~799 kWh/kWp · +0% vs G76
AB38 (Moray)
~799 kWh/kWp · +0% vs G76
ZE3 (Shetland Islands)
~799 kWh/kWp · +0% vs G76