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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in BB11 (Burnley)

See if solar pays off for you in Burnley — 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
14.2 years
After this, it's pure profit
Upfront Cost
£8,138
What you pay to get started
Annual Benefit
£571
What you save every year
Profit Over 25 Years
£6,140
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 North West, the current unit rate is 27.11p/kWh with a 51.16p/day standing charge. Your postcode’s south-facing sunshine yield is 848 kWh/kW — 22 below the regional median (870).

Read the full story

A typical roof here lands around 4.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 848 kWh per year on a south-facing roof. We value self-used electricity at 27.1p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.1p/kWh
Standing charge
51.2p/day
Sunshine yield (south)
848 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: £714, Upfront: £10,173, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1695 kWh 678 kWh 1017 kWh £184 £102 £286 £4,069 14.2 yrs £1,642
3 kW 2543 kWh 1017 kWh 1526 kWh £276 £153 £428 £6,104 14.2 yrs £2,463
4 kW 3391 kWh 1356 kWh 2034 kWh £368 £203 £571 £8,138 14.2 yrs £3,284
5 kW 4238 kWh 1695 kWh 2543 kWh £460 £254 £714 £10,173 14.2 yrs £4,105
6 kW 5086 kWh 2034 kWh 3052 kWh £552 £305 £857 £12,207 14.2 yrs £4,927
7 kW 5934 kWh 2373 kWh 3560 kWh £643 £356 £999 £14,242 14.2 yrs £5,748
8 kW 6781 kWh 2713 kWh 4069 kWh £735 £407 £1,142 £16,276 14.2 yrs £6,569

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: £859, Upfront: £12,273, Break-even: 14.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1695 kWh 1017 kWh 678 kWh £276 £68 £344 £6,169 18.0 yrs £702
3 kW 2543 kWh 1526 kWh 1017 kWh £414 £102 £515 £8,204 15.9 yrs £2,104
4 kW 3391 kWh 2034 kWh 1356 kWh £552 £136 £687 £10,238 14.9 yrs £3,505
5 kW 4238 kWh 2543 kWh 1695 kWh £689 £170 £859 £12,273 14.3 yrs £4,906
6 kW 5086 kWh 3052 kWh 2034 kWh £827 £203 £1,031 £14,307 13.9 yrs £6,307
7 kW 5934 kWh 3560 kWh 2373 kWh £965 £237 £1,203 £16,342 13.6 yrs £7,709
8 kW 6781 kWh 4069 kWh 2713 kWh £1,103 £271 £1,374 £18,376 13.4 yrs £9,110

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: £931, Upfront: £13,673, Break-even: 14.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1695 kWh 1187 kWh 509 kWh £322 £51 £373 £7,569 20.3 yrs £-117
3 kW 2543 kWh 1780 kWh 763 kWh £483 £76 £559 £9,604 17.2 yrs £1,574
4 kW 3391 kWh 2373 kWh 1017 kWh £643 £102 £745 £11,638 15.6 yrs £3,265
5 kW 4238 kWh 2967 kWh 1271 kWh £804 £127 £931 £13,673 14.7 yrs £4,956
6 kW 5086 kWh 3560 kWh 1526 kWh £965 £153 £1,118 £15,707 14.1 yrs £6,648
7 kW 5934 kWh 4154 kWh 1780 kWh £1,126 £178 £1,304 £17,742 13.6 yrs £8,339
8 kW 6781 kWh 4747 kWh 2034 kWh £1,287 £203 £1,490 £19,776 13.3 yrs £10,030

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: £953, Upfront: £15,423, 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 1695 kWh 1238 kWh 458 kWh £336 £46 £381 £9,319 24.4 yrs £-1,693
3 kW 2543 kWh 1856 kWh 687 kWh £503 £69 £572 £11,354 19.9 yrs £85
4 kW 3391 kWh 2475 kWh 915 kWh £671 £92 £763 £13,388 17.6 yrs £1,863
5 kW 4238 kWh 3094 kWh 1144 kWh £839 £114 £953 £15,423 16.2 yrs £3,642
6 kW 5086 kWh 3713 kWh 1373 kWh £1,007 £137 £1,144 £17,457 15.3 yrs £5,420
7 kW 5934 kWh 4332 kWh 1602 kWh £1,174 £160 £1,334 £19,492 14.6 yrs £7,198
8 kW 6781 kWh 4950 kWh 1831 kWh £1,342 £183 £1,525 £21,526 14.1 yrs £8,977

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: £968, Upfront: £17,173, Break-even: 17.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1695 kWh 1271 kWh 424 kWh £345 £42 £387 £11,069 28.6 yrs £-3,327
3 kW 2543 kWh 1907 kWh 636 kWh £517 £64 £581 £13,104 22.6 yrs £-1,491
4 kW 3391 kWh 2543 kWh 848 kWh £689 £85 £774 £15,138 19.6 yrs £345
5 kW 4238 kWh 3179 kWh 1060 kWh £862 £106 £968 £17,173 17.7 yrs £2,182
6 kW 5086 kWh 3814 kWh 1271 kWh £1,034 £127 £1,161 £19,207 16.5 yrs £4,018
7 kW 5934 kWh 4450 kWh 1483 kWh £1,206 £148 £1,355 £21,242 15.7 yrs £5,854
8 kW 6781 kWh 5086 kWh 1695 kWh £1,379 £170 £1,548 £23,276 15.0 yrs £7,691

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: £982, Upfront: £19,623, Break-even: 20.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1695 kWh 1305 kWh 390 kWh £354 £39 £393 £13,519 34.4 yrs £-5,661
3 kW 2543 kWh 1958 kWh 585 kWh £531 £58 £589 £15,554 26.4 yrs £-3,767
4 kW 3391 kWh 2611 kWh 780 kWh £708 £78 £786 £17,588 22.4 yrs £-1,873
5 kW 4238 kWh 3263 kWh 975 kWh £885 £97 £982 £19,623 20.0 yrs £22
6 kW 5086 kWh 3916 kWh 1170 kWh £1,062 £117 £1,179 £21,657 18.4 yrs £1,916
7 kW 5934 kWh 4569 kWh 1365 kWh £1,239 £136 £1,375 £23,692 17.2 yrs £3,810
8 kW 6781 kWh 5222 kWh 1560 kWh £1,416 £156 £1,572 £25,726 16.4 yrs £5,705

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 BB11

Figures below are tailored to BB11 — click through for full league tables.

Big-Roof Britain Rank #1931 of 2182
4.2 kWp (UK avg 5.1 kWp)
~9 panels (≈430 W)
Solar Payback Index Rank #2588 of 2997
12.4 years (UK avg 11.3 years)
~£658 /yr • £8,138 upfront
Standing-Charge Drag Rank #2587 of 2997
28.4% (UK avg 21.7%) drag on savings
£187 fixed • ~£658 /yr value

Your Area at a Glance

Your Electricity Rate
27.11p/kWh
Daily Fixed Charge
51.16p/day
Local Sunshine
848kWh/kW
A 1 kW system generates ~848 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
4.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 80% • Flats: 14% • Bungalows: 4% Based on 8,389 properties

Coverage

Burnley (100%)

Areas Covered

Daneshouse with Stoneyholme, Trinity, Rosehill with Burnley Wood, Coal Clough with Deerplay, Rosegrove with Lowerhouse, Bank Hall, Hapton with Park, Cliviger with Worsthorne + 2 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 North West

BB10 (Burnley)
≈2.1 km away
Local sunshine: ~848 kWh/kWp · +0% vs BB11
BB12 (Burnley)
≈2.8 km away
Local sunshine: ~848 kWh/kWp · +0% vs BB11
BB9 (Pendle)
≈5.8 km away
Local sunshine: ~845 kWh/kWp · -0% vs BB11
BB5 (Hyndburn)
≈9.0 km away
Local sunshine: ~855 kWh/kWp · +1% vs BB11
BB8 (Pendle)
≈9.8 km away
Local sunshine: ~846 kWh/kWp · -0% vs BB11
BB4 (Rossendale)
≈9.8 km away
Local sunshine: ~836 kWh/kWp · -1% vs BB11

Similar sunshine across the UK

EH51 (Falkirk)
~848 kWh/kWp · -0% vs BB11
PA12 (Renfrewshire)
~848 kWh/kWp · +0% vs BB11
FK15 (Stirling)
~848 kWh/kWp · -0% vs BB11