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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in WR9 (Wychavon)

See if solar pays off for you in Wychavon — 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
13.1 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£779
What you save every year
Profit Over 25 Years
£9,307
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 Midlands, the current unit rate is 25.64p/kWh with a 53.00p/day standing charge. Your postcode’s south-facing sunshine yield is 959 kWh/kW — 17 above the regional median (942).

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 959 kWh per year on a south-facing roof. We value self-used electricity at 25.6p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.6p/kWh
Standing charge
53.0p/day
Sunshine yield (south)
959 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: £779, Upfront: £10,173, Break-even: 13.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1917 kWh 767 kWh 1150 kWh £197 £115 £312 £4,069 13.1 yrs £2,165
3 kW 2876 kWh 1150 kWh 1726 kWh £295 £173 £468 £6,104 13.1 yrs £3,247
4 kW 3835 kWh 1534 kWh 2301 kWh £393 £230 £623 £8,138 13.1 yrs £4,329
5 kW 4793 kWh 1917 kWh 2876 kWh £492 £288 £779 £10,173 13.1 yrs £5,411
6 kW 5752 kWh 2301 kWh 3451 kWh £590 £345 £935 £12,207 13.1 yrs £6,494
7 kW 6711 kWh 2684 kWh 4026 kWh £688 £403 £1,091 £14,242 13.1 yrs £7,576
8 kW 7669 kWh 3068 kWh 4602 kWh £787 £460 £1,247 £16,276 13.1 yrs £8,658

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: £929, 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 1917 kWh 1150 kWh 767 kWh £295 £77 £372 £6,169 16.6 yrs £1,264
3 kW 2876 kWh 1726 kWh 1150 kWh £442 £115 £557 £8,204 14.7 yrs £2,946
4 kW 3835 kWh 2301 kWh 1534 kWh £590 £153 £743 £10,238 13.8 yrs £4,628
5 kW 4793 kWh 2876 kWh 1917 kWh £737 £192 £929 £12,273 13.2 yrs £6,310
6 kW 5752 kWh 3451 kWh 2301 kWh £885 £230 £1,115 £14,307 12.8 yrs £7,992
7 kW 6711 kWh 4026 kWh 2684 kWh £1,032 £268 £1,301 £16,342 12.6 yrs £9,674
8 kW 7669 kWh 4602 kWh 3068 kWh £1,180 £307 £1,487 £18,376 12.4 yrs £11,356

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 1917 kWh 1342 kWh 575 kWh £344 £58 £402 £7,569 18.8 yrs £464
3 kW 2876 kWh 2013 kWh 863 kWh £516 £86 £602 £9,604 15.9 yrs £2,446
4 kW 3835 kWh 2684 kWh 1150 kWh £688 £115 £803 £11,638 14.5 yrs £4,427
5 kW 4793 kWh 3355 kWh 1438 kWh £860 £144 £1,004 £13,673 13.6 yrs £6,409
6 kW 5752 kWh 4026 kWh 1726 kWh £1,032 £173 £1,205 £15,707 13.0 yrs £8,391
7 kW 6711 kWh 4697 kWh 2013 kWh £1,204 £201 £1,406 £17,742 12.6 yrs £10,373
8 kW 7669 kWh 5368 kWh 2301 kWh £1,376 £230 £1,607 £19,776 12.3 yrs £12,355

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 1917 kWh 1400 kWh 518 kWh £359 £52 £411 £9,319 22.7 yrs £-1,106
3 kW 2876 kWh 2099 kWh 777 kWh £538 £78 £616 £11,354 18.4 yrs £965
4 kW 3835 kWh 2799 kWh 1035 kWh £718 £104 £821 £13,388 16.3 yrs £3,037
5 kW 4793 kWh 3499 kWh 1294 kWh £897 £129 £1,027 £15,423 15.0 yrs £5,109
6 kW 5752 kWh 4199 kWh 1553 kWh £1,077 £155 £1,232 £17,457 14.2 yrs £7,181
7 kW 6711 kWh 4899 kWh 1812 kWh £1,256 £181 £1,437 £19,492 13.6 yrs £9,253
8 kW 7669 kWh 5599 kWh 2071 kWh £1,435 £207 £1,643 £21,526 13.1 yrs £11,324

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: £1,042, 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 1917 kWh 1438 kWh 479 kWh £369 £48 £417 £11,069 26.6 yrs £-2,736
3 kW 2876 kWh 2157 kWh 719 kWh £553 £72 £625 £13,104 21.0 yrs £-605
4 kW 3835 kWh 2876 kWh 959 kWh £737 £96 £833 £15,138 18.2 yrs £1,527
5 kW 4793 kWh 3595 kWh 1198 kWh £922 £120 £1,042 £17,173 16.5 yrs £3,659
6 kW 5752 kWh 4314 kWh 1438 kWh £1,106 £144 £1,250 £19,207 15.4 yrs £5,791
7 kW 6711 kWh 5033 kWh 1678 kWh £1,290 £168 £1,458 £21,242 14.6 yrs £7,922
8 kW 7669 kWh 5752 kWh 1917 kWh £1,475 £192 £1,667 £23,276 14.0 yrs £10,054

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: £1,057, 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 1917 kWh 1476 kWh 441 kWh £379 £44 £423 £13,519 32.0 yrs £-5,066
3 kW 2876 kWh 2214 kWh 661 kWh £568 £66 £634 £15,554 24.5 yrs £-2,875
4 kW 3835 kWh 2953 kWh 882 kWh £757 £88 £845 £17,588 20.8 yrs £-683
5 kW 4793 kWh 3691 kWh 1102 kWh £946 £110 £1,057 £19,623 18.6 yrs £1,509
6 kW 5752 kWh 4429 kWh 1323 kWh £1,136 £132 £1,268 £21,657 17.1 yrs £3,701
7 kW 6711 kWh 5167 kWh 1543 kWh £1,325 £154 £1,479 £23,692 16.0 yrs £5,892
8 kW 7669 kWh 5905 kWh 1764 kWh £1,514 £176 £1,691 £25,726 15.2 yrs £8,084

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 WR9

Figures below are tailored to WR9 — click through for full league tables.

Big-Roof Britain Rank #1098 of 2182
5.0 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #1720 of 2997
11.4 years (UK avg 11.3 years)
~£892 /yr • £10,173 upfront
Standing-Charge Drag Rank #1751 of 2997
21.7% (UK avg 21.7%) drag on savings
£193 fixed • ~£892 /yr value

Your Area at a Glance

Your Electricity Rate
25.64p/kWh
Daily Fixed Charge
53.00p/day
Local Sunshine
959kWh/kW
A 1 kW system generates ~959 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: 72% • Flats: 16% • Bungalows: 10% Based on 9,663 properties

Coverage

Wychavon (100%)

Areas Covered

Droitwich West, Droitwich East, Droitwich South West, Droitwich South East, Ombersley, Dodderhill, Bowbrook, North Claines & Salwarpe + 3 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 Midlands

WR3 (Worcester)
≈7.1 km away
Local sunshine: ~966 kWh/kWp · +1% vs WR9
WR4 (Worcester)
≈7.6 km away
Local sunshine: ~967 kWh/kWp · +1% vs WR9
B60 (Bromsgrove)
≈9.0 km away
Local sunshine: ~958 kWh/kWp · -0% vs WR9
WR78 (Worcester)
≈9.1 km away
Local sunshine: ~971 kWh/kWp · +1% vs WR9
WR99 (Worcester)
≈9.2 km away
Local sunshine: ~972 kWh/kWp · +1% vs WR9
WR1 (Worcester)
≈9.2 km away
Local sunshine: ~971 kWh/kWp · +1% vs WR9

Similar sunshine across the UK

PL33 (Cornwall)
~959 kWh/kWp · +0% vs WR9
DN15 (North Lincolnshire)
~959 kWh/kWp · +0% vs WR9
TA22 (Somerset)
~959 kWh/kWp · +0% vs WR9