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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in FY5 (Wyre)

See if solar pays off for you in Wyre — 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
12.1 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£1,009
What you save every year
Profit Over 25 Years
£13,011
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 998 kWh/kW — 128 above the regional median (870).

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 998 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)
998 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: £841, Upfront: £10,173, Break-even: 12.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 798 kWh 1198 kWh £216 £120 £336 £4,069 12.1 yrs £2,656
3 kW 2994 kWh 1198 kWh 1797 kWh £325 £180 £504 £6,104 12.1 yrs £3,984
4 kW 3992 kWh 1597 kWh 2395 kWh £433 £240 £672 £8,138 12.1 yrs £5,312
5 kW 4990 kWh 1996 kWh 2994 kWh £541 £299 £841 £10,173 12.1 yrs £6,639
6 kW 5989 kWh 2395 kWh 3593 kWh £649 £359 £1,009 £12,207 12.1 yrs £7,967
7 kW 6987 kWh 2795 kWh 4192 kWh £758 £419 £1,177 £14,242 12.1 yrs £9,295
8 kW 7985 kWh 3194 kWh 4791 kWh £866 £479 £1,345 £16,276 12.1 yrs £10,623

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: £1,011, Upfront: £12,273, Break-even: 12.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 1198 kWh 798 kWh £325 £80 £405 £6,169 15.2 yrs £1,922
3 kW 2994 kWh 1797 kWh 1198 kWh £487 £120 £607 £8,204 13.5 yrs £3,933
4 kW 3992 kWh 2395 kWh 1597 kWh £649 £160 £809 £10,238 12.7 yrs £5,944
5 kW 4990 kWh 2994 kWh 1996 kWh £812 £200 £1,011 £12,273 12.1 yrs £7,955
6 kW 5989 kWh 3593 kWh 2395 kWh £974 £240 £1,214 £14,307 11.8 yrs £9,966
7 kW 6987 kWh 4192 kWh 2795 kWh £1,136 £279 £1,416 £16,342 11.5 yrs £11,977
8 kW 7985 kWh 4791 kWh 3194 kWh £1,299 £319 £1,618 £18,376 11.4 yrs £13,988

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: £1,097, Upfront: £13,673, Break-even: 12.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 1397 kWh 599 kWh £379 £60 £439 £7,569 17.3 yrs £1,205
3 kW 2994 kWh 2096 kWh 898 kWh £568 £90 £658 £9,604 14.6 yrs £3,558
4 kW 3992 kWh 2795 kWh 1198 kWh £758 £120 £877 £11,638 13.3 yrs £5,910
5 kW 4990 kWh 3493 kWh 1497 kWh £947 £150 £1,097 £13,673 12.5 yrs £8,263
6 kW 5989 kWh 4192 kWh 1797 kWh £1,136 £180 £1,316 £15,707 11.9 yrs £10,615
7 kW 6987 kWh 4891 kWh 2096 kWh £1,326 £210 £1,535 £17,742 11.6 yrs £12,968
8 kW 7985 kWh 5589 kWh 2395 kWh £1,515 £240 £1,755 £19,776 11.3 yrs £15,320

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: £1,122, Upfront: £15,423, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 1457 kWh 539 kWh £395 £54 £449 £9,319 20.8 yrs £-340
3 kW 2994 kWh 2186 kWh 808 kWh £593 £81 £673 £11,354 16.9 yrs £2,115
4 kW 3992 kWh 2914 kWh 1078 kWh £790 £108 £898 £13,388 14.9 yrs £4,570
5 kW 4990 kWh 3643 kWh 1347 kWh £988 £135 £1,122 £15,423 13.7 yrs £7,025
6 kW 5989 kWh 4372 kWh 1617 kWh £1,185 £162 £1,347 £17,457 13.0 yrs £9,480
7 kW 6987 kWh 5100 kWh 1886 kWh £1,383 £189 £1,571 £19,492 12.4 yrs £11,935
8 kW 7985 kWh 5829 kWh 2156 kWh £1,580 £216 £1,796 £21,526 12.0 yrs £14,390

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: £1,139, Upfront: £17,173, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 1497 kWh 499 kWh £406 £50 £456 £11,069 24.3 yrs £-1,953
3 kW 2994 kWh 2246 kWh 749 kWh £609 £75 £684 £13,104 19.2 yrs £570
4 kW 3992 kWh 2994 kWh 998 kWh £812 £100 £912 £15,138 16.6 yrs £3,093
5 kW 4990 kWh 3743 kWh 1248 kWh £1,015 £125 £1,139 £17,173 15.1 yrs £5,617
6 kW 5989 kWh 4491 kWh 1497 kWh £1,218 £150 £1,367 £19,207 14.0 yrs £8,140
7 kW 6987 kWh 5240 kWh 1747 kWh £1,421 £175 £1,595 £21,242 13.3 yrs £10,663
8 kW 7985 kWh 5989 kWh 1996 kWh £1,624 £200 £1,823 £23,276 12.8 yrs £13,187

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: £1,157, Upfront: £19,623, Break-even: 17.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1996 kWh 1537 kWh 459 kWh £417 £46 £463 £13,519 29.2 yrs £-4,267
3 kW 2994 kWh 2306 kWh 689 kWh £625 £69 £694 £15,554 22.4 yrs £-1,675
4 kW 3992 kWh 3074 kWh 918 kWh £833 £92 £925 £17,588 19.0 yrs £916
5 kW 4990 kWh 3843 kWh 1148 kWh £1,042 £115 £1,157 £19,623 17.0 yrs £3,508
6 kW 5989 kWh 4611 kWh 1377 kWh £1,250 £138 £1,388 £21,657 15.6 yrs £6,100
7 kW 6987 kWh 5380 kWh 1607 kWh £1,458 £161 £1,619 £23,692 14.6 yrs £8,691
8 kW 7985 kWh 6148 kWh 1837 kWh £1,667 £184 £1,850 £25,726 13.9 yrs £11,283

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 FY5

Figures below are tailored to FY5 — click through for full league tables.

Big-Roof Britain Rank #712 of 2182
5.3 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #518 of 2997
10.5 years (UK avg 11.3 years)
~£1,162 /yr • £12,207 upfront
Standing-Charge Drag Rank #579 of 2997
16.1% (UK avg 21.7%) drag on savings
£187 fixed • ~£1,162 /yr value

Your Area at a Glance

Your Electricity Rate
27.11p/kWh
Daily Fixed Charge
51.16p/day
Local Sunshine
998kWh/kW
A 1 kW system generates ~998 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: 56% • Flats: 17% • Bungalows: 25% Based on 12,522 properties

Coverage

Wyre (76%)|Blackpool (24%)

Areas Covered

Jubilee, Bourne, Marsh Mill, Anchorsholme, Stanah, Victoria & Norcross, Norbreck, Cleveleys Park + 4 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

FY2 (Blackpool)
≈3.5 km away
Local sunshine: ~998 kWh/kWp · -0% vs FY5
FY6 (Wyre)
≈4.1 km away
Local sunshine: ~980 kWh/kWp · -2% vs FY5
FY7 (Wyre)
≈4.8 km away
Local sunshine: ~986 kWh/kWp · -1% vs FY5
FY3 (Blackpool)
≈5.9 km away
Local sunshine: ~999 kWh/kWp · +0% vs FY5
FY1 (Blackpool)
≈6.5 km away
Local sunshine: ~995 kWh/kWp · -0% vs FY5
FY4 (Blackpool)
≈9.3 km away
Local sunshine: ~986 kWh/kWp · -1% vs FY5

Similar sunshine across the UK

KT10 (Elmbridge)
~998 kWh/kWp · +0% vs FY5
KT9 (Kingston upon Thames)
~998 kWh/kWp · -0% vs FY5
EX6 (Teignbridge)
~998 kWh/kWp · +0% vs FY5