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Solar Panels in G77 (East Renfrewshire)

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

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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
15.2 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£802
What you save every year
Profit Over 25 Years
£7,835
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 818 kWh/kW — 32 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 818 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)
818 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: £668, Upfront: £10,173, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1636 kWh 654 kWh 981 kWh £169 £98 £267 £4,069 15.2 yrs £1,276
3 kW 2454 kWh 981 kWh 1472 kWh £254 £147 £401 £6,104 15.2 yrs £1,913
4 kW 3272 kWh 1309 kWh 1963 kWh £338 £196 £534 £8,138 15.2 yrs £2,551
5 kW 4090 kWh 1636 kWh 2454 kWh £423 £245 £668 £10,173 15.2 yrs £3,189
6 kW 4907 kWh 1963 kWh 2944 kWh £507 £294 £802 £12,207 15.2 yrs £3,827
7 kW 5725 kWh 2290 kWh 3435 kWh £592 £344 £935 £14,242 15.2 yrs £4,464
8 kW 6543 kWh 2617 kWh 3926 kWh £676 £393 £1,069 £16,276 15.2 yrs £5,102

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: £798, Upfront: £12,273, 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 1636 kWh 981 kWh 654 kWh £254 £65 £319 £6,169 19.3 yrs £212
3 kW 2454 kWh 1472 kWh 981 kWh £380 £98 £479 £8,204 17.1 yrs £1,368
4 kW 3272 kWh 1963 kWh 1309 kWh £507 £131 £638 £10,238 16.0 yrs £2,524
5 kW 4090 kWh 2454 kWh 1636 kWh £634 £164 £798 £12,273 15.4 yrs £3,680
6 kW 4907 kWh 2944 kWh 1963 kWh £761 £196 £957 £14,307 14.9 yrs £4,836
7 kW 5725 kWh 3435 kWh 2290 kWh £888 £229 £1,117 £16,342 14.6 yrs £5,992
8 kW 6543 kWh 3926 kWh 2617 kWh £1,014 £262 £1,276 £18,376 14.4 yrs £7,148

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: £862, Upfront: £13,673, 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 1636 kWh 1145 kWh 491 kWh £296 £49 £345 £7,569 21.9 yrs £-670
3 kW 2454 kWh 1718 kWh 736 kWh £444 £74 £517 £9,604 18.6 yrs £745
4 kW 3272 kWh 2290 kWh 981 kWh £592 £98 £690 £11,638 16.9 yrs £2,160
5 kW 4090 kWh 2863 kWh 1227 kWh £740 £123 £862 £13,673 15.9 yrs £3,576
6 kW 4907 kWh 3435 kWh 1472 kWh £888 £147 £1,035 £15,707 15.2 yrs £4,991
7 kW 5725 kWh 4008 kWh 1718 kWh £1,036 £172 £1,207 £17,742 14.7 yrs £6,406
8 kW 6543 kWh 4580 kWh 1963 kWh £1,184 £196 £1,380 £19,776 14.3 yrs £7,821

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: £882, Upfront: £15,423, Break-even: 17.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1636 kWh 1194 kWh 442 kWh £309 £44 £353 £9,319 26.4 yrs £-2,264
3 kW 2454 kWh 1791 kWh 663 kWh £463 £66 £529 £11,354 21.5 yrs £-771
4 kW 3272 kWh 2388 kWh 883 kWh £617 £88 £705 £13,388 19.0 yrs £721
5 kW 4090 kWh 2985 kWh 1104 kWh £771 £110 £882 £15,423 17.5 yrs £2,214
6 kW 4907 kWh 3582 kWh 1325 kWh £926 £133 £1,058 £17,457 16.5 yrs £3,707
7 kW 5725 kWh 4180 kWh 1546 kWh £1,080 £155 £1,235 £19,492 15.8 yrs £5,200
8 kW 6543 kWh 4777 kWh 1767 kWh £1,234 £177 £1,411 £21,526 15.3 yrs £6,693

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: £895, Upfront: £17,173, Break-even: 19.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1636 kWh 1227 kWh 409 kWh £317 £41 £358 £11,069 30.9 yrs £-3,911
3 kW 2454 kWh 1840 kWh 613 kWh £476 £61 £537 £13,104 24.4 yrs £-2,366
4 kW 3272 kWh 2454 kWh 818 kWh £634 £82 £716 £15,138 21.1 yrs £-821
5 kW 4090 kWh 3067 kWh 1022 kWh £793 £102 £895 £17,173 19.2 yrs £723
6 kW 4907 kWh 3681 kWh 1227 kWh £951 £123 £1,074 £19,207 17.9 yrs £2,268
7 kW 5725 kWh 4294 kWh 1431 kWh £1,110 £143 £1,253 £21,242 17.0 yrs £3,813
8 kW 6543 kWh 4907 kWh 1636 kWh £1,268 £164 £1,432 £23,276 16.3 yrs £5,357

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: £908, Upfront: £19,623, Break-even: 21.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1636 kWh 1260 kWh 376 kWh £325 £38 £363 £13,519 37.2 yrs £-6,257
3 kW 2454 kWh 1889 kWh 564 kWh £488 £56 £545 £15,554 28.6 yrs £-4,661
4 kW 3272 kWh 2519 kWh 752 kWh £651 £75 £726 £17,588 24.2 yrs £-3,064
5 kW 4090 kWh 3149 kWh 941 kWh £814 £94 £908 £19,623 21.6 yrs £-1,468
6 kW 4907 kWh 3779 kWh 1129 kWh £976 £113 £1,089 £21,657 19.9 yrs £129
7 kW 5725 kWh 4409 kWh 1317 kWh £1,139 £132 £1,271 £23,692 18.6 yrs £1,725
8 kW 6543 kWh 5038 kWh 1505 kWh £1,302 £150 £1,452 £25,726 17.7 yrs £3,322

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 G77

Figures below are tailored to G77 — click through for full league tables.

Solar Payback Index Rank #2882 of 2997
13.3 years (UK avg 11.3 years)
~£918 /yr • £12,207 upfront
Standing-Charge Drag Rank #2016 of 2997
22.5% (UK avg 21.7%) drag on savings
£206 fixed • ~£918 /yr value

Your Area at a Glance

Your Electricity Rate
25.84p/kWh
Daily Fixed Charge
56.55p/day
Local Sunshine
818kWh/kW
A 1 kW system generates ~818 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 (100%)

Areas Covered

Newton Mearns South and Eaglesham, Newton Mearns North and Neilston, Annick

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

G76 (East Renfrewshire)
≈3.8 km away
Local sunshine: ~799 kWh/kWp · -2% vs G77
G46 (East Renfrewshire)
≈4.1 km away
Local sunshine: ~833 kWh/kWp · +2% vs G77
G78 (East Renfrewshire)
≈4.8 km away
Local sunshine: ~839 kWh/kWp · +3% vs G77
G53 (Glasgow City)
≈5.5 km away
Local sunshine: ~837 kWh/kWp · +2% vs G77
G43 (Glasgow City)
≈5.6 km away
Local sunshine: ~836 kWh/kWp · +2% vs G77
G44 (Glasgow City)
≈6.3 km away
Local sunshine: ~832 kWh/kWp · +2% vs G77

Similar sunshine across the UK

PA82 (Na h-Eileanan Siar)
~818 kWh/kWp · -0% vs G77
HS6 (Na h-Eileanan Siar)
~818 kWh/kWp · -0% vs G77
IV7 (Highland)
~817 kWh/kWp · -0% vs G77