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Solar panel cost in Blackburn with Darwen (BB0)

See realistic solar installation costs, savings and payback for BB0 (Blackburn with Darwen) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

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
15.5 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£658
What you save every year
Profit Over 25 Years
£6,270
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 23.04p/kWh with a 46.92p/day standing charge. Your postcode’s south-facing sunshine yield is 864 kWh/kW — 6 below the regional median (870).

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 864 kWh per year on a south-facing roof. We value self-used electricity at 23.0p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
23.0p/kWh
Standing charge
46.9p/day
Sunshine yield (south)
864 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: £658, Upfront: £10,173, Break-even: 15.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1729 kWh 692 kWh 1037 kWh £159 £104 £263 £4,069 15.5 yrs £1,192
3 kW 2593 kWh 1037 kWh 1556 kWh £239 £156 £395 £6,104 15.5 yrs £1,789
4 kW 3458 kWh 1383 kWh 2075 kWh £319 £207 £526 £8,138 15.5 yrs £2,385
5 kW 4322 kWh 1729 kWh 2593 kWh £398 £259 £658 £10,173 15.5 yrs £2,981
6 kW 5187 kWh 2075 kWh 3112 kWh £478 £311 £789 £12,207 15.5 yrs £3,577
7 kW 6051 kWh 2421 kWh 3631 kWh £558 £363 £921 £14,242 15.5 yrs £4,174
8 kW 6916 kWh 2766 kWh 4149 kWh £637 £415 £1,052 £16,276 15.5 yrs £4,770

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: £770, Upfront: £12,273, 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 1729 kWh 1037 kWh 692 kWh £239 £69 £308 £6,169 20.0 yrs £-6
3 kW 2593 kWh 1556 kWh 1037 kWh £359 £104 £462 £8,204 17.7 yrs £1,041
4 kW 3458 kWh 2075 kWh 1383 kWh £478 £138 £616 £10,238 16.6 yrs £2,089
5 kW 4322 kWh 2593 kWh 1729 kWh £598 £173 £770 £12,273 15.9 yrs £3,136
6 kW 5187 kWh 3112 kWh 2075 kWh £717 £207 £924 £14,307 15.5 yrs £4,183
7 kW 6051 kWh 3631 kWh 2421 kWh £837 £242 £1,079 £16,342 15.2 yrs £5,230
8 kW 6916 kWh 4149 kWh 2766 kWh £956 £277 £1,233 £18,376 14.9 yrs £6,277

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: £827, Upfront: £13,673, 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 1729 kWh 1210 kWh 519 kWh £279 £52 £331 £7,569 22.9 yrs £-955
3 kW 2593 kWh 1815 kWh 778 kWh £418 £78 £496 £9,604 19.4 yrs £318
4 kW 3458 kWh 2421 kWh 1037 kWh £558 £104 £661 £11,638 17.6 yrs £1,590
5 kW 4322 kWh 3026 kWh 1297 kWh £697 £130 £827 £13,673 16.5 yrs £2,863
6 kW 5187 kWh 3631 kWh 1556 kWh £837 £156 £992 £15,707 15.8 yrs £4,136
7 kW 6051 kWh 4236 kWh 1815 kWh £976 £182 £1,157 £17,742 15.3 yrs £5,408
8 kW 6916 kWh 4841 kWh 2075 kWh £1,115 £207 £1,323 £19,776 14.9 yrs £6,681

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: £844, Upfront: £15,423, Break-even: 18.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1729 kWh 1262 kWh 467 kWh £291 £47 £337 £9,319 27.6 yrs £-2,570
3 kW 2593 kWh 1893 kWh 700 kWh £436 £70 £506 £11,354 22.4 yrs £-1,229
4 kW 3458 kWh 2524 kWh 934 kWh £582 £93 £675 £13,388 19.8 yrs £111
5 kW 4322 kWh 3155 kWh 1167 kWh £727 £117 £844 £15,423 18.3 yrs £1,451
6 kW 5187 kWh 3786 kWh 1400 kWh £872 £140 £1,012 £17,457 17.2 yrs £2,791
7 kW 6051 kWh 4417 kWh 1634 kWh £1,018 £163 £1,181 £19,492 16.5 yrs £4,132
8 kW 6916 kWh 5049 kWh 1867 kWh £1,163 £187 £1,350 £21,526 15.9 yrs £5,472

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: £855, Upfront: £17,173, Break-even: 20.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1729 kWh 1297 kWh 432 kWh £299 £43 £342 £11,069 32.4 yrs £-4,229
3 kW 2593 kWh 1945 kWh 648 kWh £448 £65 £513 £13,104 25.5 yrs £-2,844
4 kW 3458 kWh 2593 kWh 864 kWh £598 £86 £684 £15,138 22.1 yrs £-1,459
5 kW 4322 kWh 3242 kWh 1081 kWh £747 £108 £855 £17,173 20.1 yrs £-73
6 kW 5187 kWh 3890 kWh 1297 kWh £896 £130 £1,026 £19,207 18.7 yrs £1,312
7 kW 6051 kWh 4538 kWh 1513 kWh £1,046 £151 £1,197 £21,242 17.7 yrs £2,697
8 kW 6916 kWh 5187 kWh 1729 kWh £1,195 £173 £1,368 £23,276 17.0 yrs £4,083

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: £866, Upfront: £19,623, Break-even: 22.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1729 kWh 1331 kWh 398 kWh £307 £40 £346 £13,519 39.0 yrs £-6,589
3 kW 2593 kWh 1997 kWh 596 kWh £460 £60 £520 £15,554 29.9 yrs £-5,159
4 kW 3458 kWh 2663 kWh 795 kWh £613 £80 £693 £17,588 25.4 yrs £-3,728
5 kW 4322 kWh 3328 kWh 994 kWh £767 £99 £866 £19,623 22.7 yrs £-2,298
6 kW 5187 kWh 3994 kWh 1193 kWh £920 £119 £1,039 £21,657 20.8 yrs £-867
7 kW 6051 kWh 4659 kWh 1392 kWh £1,074 £139 £1,213 £23,692 19.5 yrs £563
8 kW 6916 kWh 5325 kWh 1591 kWh £1,227 £159 £1,386 £25,726 18.6 yrs £1,993

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 BB0

Figures below are tailored to BB0 — click through for full league tables.

Solar Payback Index Rank #2426 of 2997
13.5 years (UK avg 12.6 years)
~£751 /yr • £10,173 upfront
Standing-Charge Drag Rank #1992 of 2997
25.4% (UK avg 24.6%) drag on savings
£191 fixed • ~£751 /yr value
Aspect Penalty View ranking →
East −18.8% West −19.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BB0

Monthly generation per kilowatt of solar panels

kWh 25 Jan 43 Feb 75 Mar 103 Apr 114 May 110 Jun 108 Jul 96 Aug 78 Sep 54 Oct 36 Nov 23 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 42.3% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 30 kWh per month; the average month produces around 72 kWh. So a typical 4 kW home system would generate roughly 122 kWh in winter, or 288 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.04p/kWh
Daily Fixed Charge
46.92p/day
Local Sunshine
864kWh/kW
A 1 kW system generates ~864 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

No EPC data available for this outcode

Coverage

Blackburn with Darwen (100%)

Areas Covered

Audley & Queen's Park

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q1 2026

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

BB1 (Blackburn with Darwen)
≈0.4 km away
Local sunshine: ~857 kWh/kWp · -1% vs BB0
BB2 (Blackburn with Darwen)
≈2.3 km away
Local sunshine: ~857 kWh/kWp · -1% vs BB0
BB5 (Hyndburn)
≈6.2 km away
Local sunshine: ~855 kWh/kWp · -1% vs BB0
BB6 (Ribble Valley)
≈6.3 km away
Local sunshine: ~860 kWh/kWp · -1% vs BB0
BB3 (Blackburn with Darwen)
≈6.4 km away
Local sunshine: ~855 kWh/kWp · -1% vs BB0
BB12 (Burnley)
≈12.8 km away
Local sunshine: ~848 kWh/kWp · -2% vs BB0

Similar sunshine across the UK

AB23 (Aberdeen City)
~864 kWh/kWp · -0% vs BB0
PH2 (Perth and Kinross)
~864 kWh/kWp · -0% vs BB0
KA2 (East Ayrshire)
~865 kWh/kWp · +0% vs BB0