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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in LN7 (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
13.2 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£924
What you save every year
Profit Over 25 Years
£10,897
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 955 kWh/kW — 26 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 955 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)
955 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: £770, Upfront: £10,173, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1910 kWh 764 kWh 1146 kWh £193 £115 £308 £4,069 13.2 yrs £2,092
3 kW 2864 kWh 1146 kWh 1719 kWh £290 £172 £462 £6,104 13.2 yrs £3,138
4 kW 3819 kWh 1528 kWh 2291 kWh £387 £229 £616 £8,138 13.2 yrs £4,184
5 kW 4774 kWh 1910 kWh 2864 kWh £484 £286 £770 £10,173 13.2 yrs £5,230
6 kW 5729 kWh 2291 kWh 3437 kWh £580 £344 £924 £12,207 13.2 yrs £6,276
7 kW 6683 kWh 2673 kWh 4010 kWh £677 £401 £1,078 £14,242 13.2 yrs £7,322
8 kW 7638 kWh 3055 kWh 4583 kWh £774 £458 £1,232 £16,276 13.2 yrs £8,368

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: £916, Upfront: £12,273, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1910 kWh 1146 kWh 764 kWh £290 £76 £367 £6,169 16.8 yrs £1,163
3 kW 2864 kWh 1719 kWh 1146 kWh £435 £115 £550 £8,204 14.9 yrs £2,794
4 kW 3819 kWh 2291 kWh 1528 kWh £580 £153 £733 £10,238 14.0 yrs £4,426
5 kW 4774 kWh 2864 kWh 1910 kWh £726 £191 £916 £12,273 13.4 yrs £6,057
6 kW 5729 kWh 3437 kWh 2291 kWh £871 £229 £1,100 £14,307 13.0 yrs £7,689
7 kW 6683 kWh 4010 kWh 2673 kWh £1,016 £267 £1,283 £16,342 12.7 yrs £9,320
8 kW 7638 kWh 4583 kWh 3055 kWh £1,161 £306 £1,466 £18,376 12.5 yrs £10,952

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: £990, Upfront: £13,673, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1910 kWh 1337 kWh 573 kWh £339 £57 £396 £7,569 19.1 yrs £348
3 kW 2864 kWh 2005 kWh 859 kWh £508 £86 £594 £9,604 16.2 yrs £2,273
4 kW 3819 kWh 2673 kWh 1146 kWh £677 £115 £792 £11,638 14.7 yrs £4,197
5 kW 4774 kWh 3342 kWh 1432 kWh £846 £143 £990 £13,673 13.8 yrs £6,121
6 kW 5729 kWh 4010 kWh 1719 kWh £1,016 £172 £1,188 £15,707 13.2 yrs £8,045
7 kW 6683 kWh 4678 kWh 2005 kWh £1,185 £201 £1,386 £17,742 12.8 yrs £9,969
8 kW 7638 kWh 5347 kWh 2291 kWh £1,354 £229 £1,583 £19,776 12.5 yrs £11,894

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: £1,012, Upfront: £15,423, 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 1910 kWh 1394 kWh 516 kWh £353 £52 £405 £9,319 23.0 yrs £-1,226
3 kW 2864 kWh 2091 kWh 773 kWh £530 £77 £607 £11,354 18.7 yrs £786
4 kW 3819 kWh 2788 kWh 1031 kWh £706 £103 £809 £13,388 16.5 yrs £2,798
5 kW 4774 kWh 3485 kWh 1289 kWh £883 £129 £1,012 £15,423 15.2 yrs £4,810
6 kW 5729 kWh 4182 kWh 1547 kWh £1,059 £155 £1,214 £17,457 14.4 yrs £6,822
7 kW 6683 kWh 4879 kWh 1805 kWh £1,236 £180 £1,416 £19,492 13.8 yrs £8,834
8 kW 7638 kWh 5576 kWh 2062 kWh £1,412 £206 £1,619 £21,526 13.3 yrs £10,846

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: £1,026, Upfront: £17,173, Break-even: 16.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1910 kWh 1432 kWh 477 kWh £363 £48 £411 £11,069 27.0 yrs £-2,859
3 kW 2864 kWh 2148 kWh 716 kWh £544 £72 £616 £13,104 21.3 yrs £-788
4 kW 3819 kWh 2864 kWh 955 kWh £726 £95 £821 £15,138 18.4 yrs £1,282
5 kW 4774 kWh 3580 kWh 1193 kWh £907 £119 £1,026 £17,173 16.7 yrs £3,353
6 kW 5729 kWh 4297 kWh 1432 kWh £1,088 £143 £1,232 £19,207 15.6 yrs £5,423
7 kW 6683 kWh 5013 kWh 1671 kWh £1,270 £167 £1,437 £21,242 14.8 yrs £7,494
8 kW 7638 kWh 5729 kWh 1910 kWh £1,451 £191 £1,642 £23,276 14.2 yrs £9,565

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: £1,041, Upfront: £19,623, Break-even: 18.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1910 kWh 1470 kWh 439 kWh £372 £44 £416 £13,519 32.5 yrs £-5,192
3 kW 2864 kWh 2206 kWh 659 kWh £559 £66 £625 £15,554 24.9 yrs £-3,063
4 kW 3819 kWh 2941 kWh 878 kWh £745 £88 £833 £17,588 21.1 yrs £-934
5 kW 4774 kWh 3676 kWh 1098 kWh £931 £110 £1,041 £19,623 18.9 yrs £1,196
6 kW 5729 kWh 4411 kWh 1318 kWh £1,117 £132 £1,249 £21,657 17.3 yrs £3,325
7 kW 6683 kWh 5146 kWh 1537 kWh £1,304 £154 £1,457 £23,692 16.3 yrs £5,454
8 kW 7638 kWh 5881 kWh 1757 kWh £1,490 £176 £1,665 £25,726 15.4 yrs £7,583

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 LN7

Figures below are tailored to LN7 — click through for full league tables.

Big-Roof Britain Rank #311 of 2182
5.9 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1866 of 2997
11.6 years (UK avg 11.3 years)
~£1,056 /yr • £12,207 upfront
Standing-Charge Drag Rank #1474 of 2997
20.3% (UK avg 21.7%) drag on savings
£214 fixed • ~£1,056 /yr value

Your Area at a Glance

Your Electricity Rate
25.33p/kWh
Daily Fixed Charge
58.65p/day
Local Sunshine
955kWh/kW
A 1 kW system generates ~955 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: 69% • Flats: 5% • Bungalows: 26% Based on 2,000 properties

Coverage

West Lindsey (97%)|North Lincolnshire (3%)

Areas Covered

Caistor and Yarborough, Wold View, Kelsey Wold, Market Rasen, Brigg & Wolds

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

DN38 (North Lincolnshire)
≈9.5 km away
Local sunshine: ~964 kWh/kWp · +1% vs LN7
LN8 (West Lindsey)
≈12.1 km away
Local sunshine: ~979 kWh/kWp · +2% vs LN7
DN20 (North Lincolnshire)
≈12.6 km away
Local sunshine: ~956 kWh/kWp · +0% vs LN7
DN41 (North East Lincolnshire)
≈13.3 km away
Local sunshine: ~988 kWh/kWp · +4% vs LN7
DN39 (North Lincolnshire)
≈13.6 km away
Local sunshine: ~978 kWh/kWp · +2% vs LN7
DN37 (North East Lincolnshire)
≈14.7 km away
Local sunshine: ~1,000 kWh/kWp · +5% vs LN7

Similar sunshine across the UK

CH49 (Wirral)
~955 kWh/kWp · +0% vs LN7
DY14 (Shropshire)
~955 kWh/kWp · -0% vs LN7
LE65 (North West Leicestershire)
~955 kWh/kWp · +0% vs LN7