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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in LN8 (West Lindsey)

See if solar pays off for you in West Lindsey — 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
12.9 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£947
What you save every year
Profit Over 25 Years
£11,474
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 Yorkshire, the current unit rate is 25.33p/kWh with a 58.65p/day standing charge. Your postcode’s south-facing sunshine yield is 979 kWh/kW — 50 above the regional median (929).

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 979 kWh per year on a south-facing roof. We value self-used electricity at 25.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.3p/kWh
Standing charge
58.6p/day
Sunshine yield (south)
979 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: £789, Upfront: £10,173, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1957 kWh 783 kWh 1174 kWh £198 £117 £316 £4,069 12.9 yrs £2,246
3 kW 2936 kWh 1174 kWh 1762 kWh £297 £176 £474 £6,104 12.9 yrs £3,369
4 kW 3915 kWh 1566 kWh 2349 kWh £397 £235 £631 £8,138 12.9 yrs £4,492
5 kW 4893 kWh 1957 kWh 2936 kWh £496 £294 £789 £10,173 12.9 yrs £5,615
6 kW 5872 kWh 2349 kWh 3523 kWh £595 £352 £947 £12,207 12.9 yrs £6,738
7 kW 6850 kWh 2740 kWh 4110 kWh £694 £411 £1,105 £14,242 12.9 yrs £7,861
8 kW 7829 kWh 3132 kWh 4697 kWh £793 £470 £1,263 £16,276 12.9 yrs £8,984

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: £939, Upfront: £12,273, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1957 kWh 1174 kWh 783 kWh £297 £78 £376 £6,169 16.4 yrs £1,346
3 kW 2936 kWh 1762 kWh 1174 kWh £446 £117 £564 £8,204 14.6 yrs £3,069
4 kW 3915 kWh 2349 kWh 1566 kWh £595 £157 £752 £10,238 13.6 yrs £4,792
5 kW 4893 kWh 2936 kWh 1957 kWh £744 £196 £939 £12,273 13.1 yrs £6,515
6 kW 5872 kWh 3523 kWh 2349 kWh £892 £235 £1,127 £14,307 12.7 yrs £8,238
7 kW 6850 kWh 4110 kWh 2740 kWh £1,041 £274 £1,315 £16,342 12.4 yrs £9,962
8 kW 7829 kWh 4697 kWh 3132 kWh £1,190 £313 £1,503 £18,376 12.2 yrs £11,685

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: £1,014, Upfront: £13,673, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1957 kWh 1370 kWh 587 kWh £347 £59 £406 £7,569 18.7 yrs £546
3 kW 2936 kWh 2055 kWh 881 kWh £521 £88 £609 £9,604 15.8 yrs £2,569
4 kW 3915 kWh 2740 kWh 1174 kWh £694 £117 £812 £11,638 14.3 yrs £4,593
5 kW 4893 kWh 3425 kWh 1468 kWh £868 £147 £1,014 £13,673 13.5 yrs £6,616
6 kW 5872 kWh 4110 kWh 1762 kWh £1,041 £176 £1,217 £15,707 12.9 yrs £8,639
7 kW 6850 kWh 4795 kWh 2055 kWh £1,215 £206 £1,420 £17,742 12.5 yrs £10,662
8 kW 7829 kWh 5480 kWh 2349 kWh £1,388 £235 £1,623 £19,776 12.2 yrs £12,685

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: £1,037, Upfront: £15,423, Break-even: 14.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1957 kWh 1429 kWh 528 kWh £362 £53 £415 £9,319 22.5 yrs £-1,024
3 kW 2936 kWh 2143 kWh 793 kWh £543 £79 £622 £11,354 18.2 yrs £1,089
4 kW 3915 kWh 2858 kWh 1057 kWh £724 £106 £830 £13,388 16.1 yrs £3,203
5 kW 4893 kWh 3572 kWh 1321 kWh £905 £132 £1,037 £15,423 14.9 yrs £5,316
6 kW 5872 kWh 4286 kWh 1585 kWh £1,086 £159 £1,244 £17,457 14.0 yrs £7,429
7 kW 6850 kWh 5001 kWh 1850 kWh £1,267 £185 £1,452 £19,492 13.4 yrs £9,542
8 kW 7829 kWh 5715 kWh 2114 kWh £1,448 £211 £1,659 £21,526 13.0 yrs £11,655

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: £1,052, Upfront: £17,173, 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 1957 kWh 1468 kWh 489 kWh £372 £49 £421 £11,069 26.3 yrs £-2,654
3 kW 2936 kWh 2202 kWh 734 kWh £558 £73 £631 £13,104 20.8 yrs £-481
4 kW 3915 kWh 2936 kWh 979 kWh £744 £98 £842 £15,138 18.0 yrs £1,693
5 kW 4893 kWh 3670 kWh 1223 kWh £930 £122 £1,052 £17,173 16.3 yrs £3,866
6 kW 5872 kWh 4404 kWh 1468 kWh £1,116 £147 £1,262 £19,207 15.2 yrs £6,039
7 kW 6850 kWh 5138 kWh 1713 kWh £1,301 £171 £1,473 £21,242 14.4 yrs £8,212
8 kW 7829 kWh 5872 kWh 1957 kWh £1,487 £196 £1,683 £23,276 13.8 yrs £10,385

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: £1,067, Upfront: £19,623, Break-even: 18.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1957 kWh 1507 kWh 450 kWh £382 £45 £427 £13,519 31.7 yrs £-4,984
3 kW 2936 kWh 2261 kWh 675 kWh £573 £68 £640 £15,554 24.3 yrs £-2,751
4 kW 3915 kWh 3014 kWh 900 kWh £763 £90 £854 £17,588 20.6 yrs £-517
5 kW 4893 kWh 3768 kWh 1125 kWh £954 £113 £1,067 £19,623 18.4 yrs £1,716
6 kW 5872 kWh 4521 kWh 1351 kWh £1,145 £135 £1,280 £21,657 16.9 yrs £3,949
7 kW 6850 kWh 5275 kWh 1576 kWh £1,336 £158 £1,494 £23,692 15.9 yrs £6,182
8 kW 7829 kWh 6028 kWh 1801 kWh £1,527 £180 £1,707 £25,726 15.1 yrs £8,415

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 LN8

Figures below are tailored to LN8 — click through for full league tables.

Big-Roof Britain Rank #310 of 2182
5.9 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1611 of 2997
11.3 years (UK avg 11.3 years)
~£1,082 /yr • £12,207 upfront
Standing-Charge Drag Rank #1353 of 2997
19.8% (UK avg 21.7%) drag on savings
£214 fixed • ~£1,082 /yr value

Your Area at a Glance

Your Electricity Rate
25.33p/kWh
Daily Fixed Charge
58.65p/day
Local Sunshine
979kWh/kW
A 1 kW system generates ~979 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

Houses: 68% • Flats: 5% • Bungalows: 26% Based on 5,826 properties

Coverage

West Lindsey (77%)|East Lindsey (23%)

Areas Covered

Market Rasen, Wragby, Binbrook, Waddingham and Spital, Wold View, Dunholme and Welton, Bardney, Tetford & Donington + 3 more

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 Yorkshire

LN7 (West Lindsey)
≈12.1 km away
Local sunshine: ~955 kWh/kWp · -2% vs LN8
DN38 (North Lincolnshire)
≈20.7 km away
Local sunshine: ~964 kWh/kWp · -2% vs LN8
DN20 (North Lincolnshire)
≈21.1 km away
Local sunshine: ~956 kWh/kWp · -2% vs LN8
LN11 (East Lindsey)
≈22.7 km away
Local sunshine: ~1,013 kWh/kWp · +4% vs LN8
DN33 (North East Lincolnshire)
≈23.1 km away
Local sunshine: ~1,007 kWh/kWp · +3% vs LN8
DN37 (North East Lincolnshire)
≈23.5 km away
Local sunshine: ~1,000 kWh/kWp · +2% vs LN8

Similar sunshine across the UK

CV36 (Stratford-on-Avon)
~979 kWh/kWp · +0% vs LN8
CV47 (Stratford-on-Avon)
~978 kWh/kWp · -0% vs LN8
BS27 (Somerset)
~979 kWh/kWp · +0% vs LN8