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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in DN18 (North Lincolnshire)

See if solar pays off for you in North Lincolnshire — 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
13.0 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£782
What you save every year
Profit Over 25 Years
£9,365
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 Yorkshire, the current unit rate is 25.33p/kWh with a 58.65p/day standing charge. Your postcode’s south-facing sunshine yield is 969 kWh/kW — 40 above the regional median (929).

Read the full story

A typical roof here lands around 5.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 969 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)
969 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: £782, Upfront: £10,173, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1938 kWh 775 kWh 1163 kWh £196 £116 £313 £4,069 13.0 yrs £2,183
3 kW 2907 kWh 1163 kWh 1744 kWh £295 £174 £469 £6,104 13.0 yrs £3,275
4 kW 3876 kWh 1550 kWh 2325 kWh £393 £233 £625 £8,138 13.0 yrs £4,366
5 kW 4844 kWh 1938 kWh 2907 kWh £491 £291 £782 £10,173 13.0 yrs £5,458
6 kW 5813 kWh 2325 kWh 3488 kWh £589 £349 £938 £12,207 13.0 yrs £6,549
7 kW 6782 kWh 2713 kWh 4069 kWh £687 £407 £1,094 £14,242 13.0 yrs £7,641
8 kW 7751 kWh 3100 kWh 4651 kWh £785 £465 £1,250 £16,276 13.0 yrs £8,732

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: £930, Upfront: £12,273, 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 1938 kWh 1163 kWh 775 kWh £295 £78 £372 £6,169 16.6 yrs £1,271
3 kW 2907 kWh 1744 kWh 1163 kWh £442 £116 £558 £8,204 14.7 yrs £2,957
4 kW 3876 kWh 2325 kWh 1550 kWh £589 £155 £744 £10,238 13.8 yrs £4,643
5 kW 4844 kWh 2907 kWh 1938 kWh £736 £194 £930 £12,273 13.2 yrs £6,328
6 kW 5813 kWh 3488 kWh 2325 kWh £884 £233 £1,116 £14,307 12.8 yrs £8,014
7 kW 6782 kWh 4069 kWh 2713 kWh £1,031 £271 £1,302 £16,342 12.6 yrs £9,699
8 kW 7751 kWh 4651 kWh 3100 kWh £1,178 £310 £1,488 £18,376 12.3 yrs £11,385

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: £1,004, Upfront: £13,673, Break-even: 13.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1938 kWh 1356 kWh 581 kWh £344 £58 £402 £7,569 18.8 yrs £465
3 kW 2907 kWh 2035 kWh 872 kWh £515 £87 £603 £9,604 15.9 yrs £2,448
4 kW 3876 kWh 2713 kWh 1163 kWh £687 £116 £803 £11,638 14.5 yrs £4,431
5 kW 4844 kWh 3391 kWh 1453 kWh £859 £145 £1,004 £13,673 13.6 yrs £6,414
6 kW 5813 kWh 4069 kWh 1744 kWh £1,031 £174 £1,205 £15,707 13.0 yrs £8,396
7 kW 6782 kWh 4748 kWh 2035 kWh £1,203 £203 £1,406 £17,742 12.6 yrs £10,379
8 kW 7751 kWh 5426 kWh 2325 kWh £1,374 £233 £1,607 £19,776 12.3 yrs £12,362

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: £1,027, Upfront: £15,423, 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 1938 kWh 1415 kWh 523 kWh £358 £52 £411 £9,319 22.7 yrs £-1,106
3 kW 2907 kWh 2122 kWh 785 kWh £537 £78 £616 £11,354 18.4 yrs £965
4 kW 3876 kWh 2829 kWh 1046 kWh £717 £105 £821 £13,388 16.3 yrs £3,037
5 kW 4844 kWh 3536 kWh 1308 kWh £896 £131 £1,027 £15,423 15.0 yrs £5,109
6 kW 5813 kWh 4244 kWh 1570 kWh £1,075 £157 £1,232 £17,457 14.2 yrs £7,181
7 kW 6782 kWh 4951 kWh 1831 kWh £1,254 £183 £1,437 £19,492 13.6 yrs £9,253
8 kW 7751 kWh 5658 kWh 2093 kWh £1,433 £209 £1,643 £21,526 13.1 yrs £11,325

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: £1,041, Upfront: £17,173, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1938 kWh 1453 kWh 484 kWh £368 £48 £417 £11,069 26.6 yrs £-2,738
3 kW 2907 kWh 2180 kWh 727 kWh £552 £73 £625 £13,104 21.0 yrs £-606
4 kW 3876 kWh 2907 kWh 969 kWh £736 £97 £833 £15,138 18.2 yrs £1,525
5 kW 4844 kWh 3633 kWh 1211 kWh £920 £121 £1,041 £17,173 16.5 yrs £3,656
6 kW 5813 kWh 4360 kWh 1453 kWh £1,104 £145 £1,250 £19,207 15.4 yrs £5,787
7 kW 6782 kWh 5087 kWh 1696 kWh £1,288 £170 £1,458 £21,242 14.6 yrs £7,919
8 kW 7751 kWh 5813 kWh 1938 kWh £1,473 £194 £1,666 £23,276 14.0 yrs £10,050

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: £1,056, Upfront: £19,623, Break-even: 18.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1938 kWh 1492 kWh 446 kWh £378 £45 £423 £13,519 32.0 yrs £-5,069
3 kW 2907 kWh 2238 kWh 669 kWh £567 £67 £634 £15,554 24.5 yrs £-2,878
4 kW 3876 kWh 2984 kWh 891 kWh £756 £89 £845 £17,588 20.8 yrs £-687
5 kW 4844 kWh 3730 kWh 1114 kWh £945 £111 £1,056 £19,623 18.6 yrs £1,503
6 kW 5813 kWh 4476 kWh 1337 kWh £1,134 £134 £1,268 £21,657 17.1 yrs £3,694
7 kW 6782 kWh 5222 kWh 1560 kWh £1,323 £156 £1,479 £23,692 16.0 yrs £5,885
8 kW 7751 kWh 5968 kWh 1783 kWh £1,512 £178 £1,690 £25,726 15.2 yrs £8,075

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 DN18

Figures below are tailored to DN18 — click through for full league tables.

Big-Roof Britain Rank #897 of 2182
5.2 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #1674 of 2997
11.4 years (UK avg 11.3 years)
~£893 /yr • £10,173 upfront
Standing-Charge Drag Rank #2131 of 2997
24.0% (UK avg 21.7%) drag on savings
£214 fixed • ~£893 /yr value

Your Area at a Glance

Your Electricity Rate
25.33p/kWh
Daily Fixed Charge
58.65p/day
Local Sunshine
969kWh/kW
A 1 kW system generates ~969 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
5.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 76% • Flats: 7% • Bungalows: 16% Based on 3,084 properties

Coverage

North Lincolnshire (100%)

Areas Covered

Barton, Brigg & Wolds, Ferry

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

HU13 (East Riding of Yorkshire)
≈4.5 km away
Local sunshine: ~964 kWh/kWp · -1% vs DN18
DN19 (North Lincolnshire)
≈5.3 km away
Local sunshine: ~975 kWh/kWp · +1% vs DN18
HU14 (East Riding of Yorkshire)
≈5.8 km away
Local sunshine: ~952 kWh/kWp · -2% vs DN18
HU4 (Kingston upon Hull, City of)
≈6.4 km away
Local sunshine: ~968 kWh/kWp · -0% vs DN18
HU10 (East Riding of Yorkshire)
≈7.4 km away
Local sunshine: ~968 kWh/kWp · -0% vs DN18
HU3 (Kingston upon Hull, City of)
≈8.0 km away
Local sunshine: ~968 kWh/kWp · -0% vs DN18

Similar sunshine across the UK

GL1 (Gloucester)
~969 kWh/kWp · +0% vs DN18
WR7 (Wychavon)
~969 kWh/kWp · +0% vs DN18
GL3 (Tewkesbury)
~969 kWh/kWp · -0% vs DN18