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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in WR15 (Malvern Hills)

See if solar pays off for you in Malvern Hills — 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
£12,207
What you pay to get started
Annual Benefit
£942
What you save every year
Profit Over 25 Years
£11,332
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 965 kWh/kW — 23 above the regional median (942).

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 965 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)
965 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: £785, 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 1931 kWh 772 kWh 1158 kWh £198 £116 £314 £4,069 13.0 yrs £2,208
3 kW 2896 kWh 1158 kWh 1738 kWh £297 £174 £471 £6,104 13.0 yrs £3,312
4 kW 3861 kWh 1545 kWh 2317 kWh £396 £232 £628 £8,138 13.0 yrs £4,416
5 kW 4827 kWh 1931 kWh 2896 kWh £495 £290 £785 £10,173 13.0 yrs £5,520
6 kW 5792 kWh 2317 kWh 3475 kWh £594 £348 £942 £12,207 13.0 yrs £6,624
7 kW 6758 kWh 2703 kWh 4055 kWh £693 £405 £1,099 £14,242 13.0 yrs £7,728
8 kW 7723 kWh 3089 kWh 4634 kWh £792 £463 £1,255 £16,276 13.0 yrs £8,833

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: £936, Upfront: £12,273, 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 1931 kWh 1158 kWh 772 kWh £297 £77 £374 £6,169 16.5 yrs £1,316
3 kW 2896 kWh 1738 kWh 1158 kWh £446 £116 £561 £8,204 14.6 yrs £3,024
4 kW 3861 kWh 2317 kWh 1545 kWh £594 £154 £749 £10,238 13.7 yrs £4,732
5 kW 4827 kWh 2896 kWh 1931 kWh £743 £193 £936 £12,273 13.1 yrs £6,440
6 kW 5792 kWh 3475 kWh 2317 kWh £891 £232 £1,123 £14,307 12.7 yrs £8,148
7 kW 6758 kWh 4055 kWh 2703 kWh £1,040 £270 £1,310 £16,342 12.5 yrs £9,856
8 kW 7723 kWh 4634 kWh 3089 kWh £1,188 £309 £1,497 £18,376 12.3 yrs £11,564

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: £1,011, Upfront: £13,673, Break-even: 13.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1931 kWh 1352 kWh 579 kWh £347 £58 £404 £7,569 18.7 yrs £520
3 kW 2896 kWh 2027 kWh 869 kWh £520 £87 £607 £9,604 15.8 yrs £2,530
4 kW 3861 kWh 2703 kWh 1158 kWh £693 £116 £809 £11,638 14.4 yrs £4,540
5 kW 4827 kWh 3379 kWh 1448 kWh £866 £145 £1,011 £13,673 13.5 yrs £6,550
6 kW 5792 kWh 4055 kWh 1738 kWh £1,040 £174 £1,213 £15,707 12.9 yrs £8,560
7 kW 6758 kWh 4730 kWh 2027 kWh £1,213 £203 £1,416 £17,742 12.5 yrs £10,570
8 kW 7723 kWh 5406 kWh 2317 kWh £1,386 £232 £1,618 £19,776 12.2 yrs £12,580

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: £1,034, Upfront: £15,423, Break-even: 14.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1931 kWh 1409 kWh 521 kWh £361 £52 £414 £9,319 22.5 yrs £-1,049
3 kW 2896 kWh 2114 kWh 782 kWh £542 £78 £620 £11,354 18.3 yrs £1,052
4 kW 3861 kWh 2819 kWh 1043 kWh £723 £104 £827 £13,388 16.2 yrs £3,152
5 kW 4827 kWh 3524 kWh 1303 kWh £903 £130 £1,034 £15,423 14.9 yrs £5,253
6 kW 5792 kWh 4228 kWh 1564 kWh £1,084 £156 £1,241 £17,457 14.1 yrs £7,353
7 kW 6758 kWh 4933 kWh 1825 kWh £1,265 £182 £1,447 £19,492 13.5 yrs £9,454
8 kW 7723 kWh 5638 kWh 2085 kWh £1,446 £209 £1,654 £21,526 13.0 yrs £11,554

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: £1,049, Upfront: £17,173, Break-even: 16.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1931 kWh 1448 kWh 483 kWh £371 £48 £420 £11,069 26.4 yrs £-2,678
3 kW 2896 kWh 2172 kWh 724 kWh £557 £72 £629 £13,104 20.8 yrs £-517
4 kW 3861 kWh 2896 kWh 965 kWh £743 £97 £839 £15,138 18.0 yrs £1,644
5 kW 4827 kWh 3620 kWh 1207 kWh £928 £121 £1,049 £17,173 16.4 yrs £3,805
6 kW 5792 kWh 4344 kWh 1448 kWh £1,114 £145 £1,259 £19,207 15.3 yrs £5,966
7 kW 6758 kWh 5068 kWh 1689 kWh £1,299 £169 £1,468 £21,242 14.5 yrs £8,127
8 kW 7723 kWh 5792 kWh 1931 kWh £1,485 £193 £1,678 £23,276 13.9 yrs £10,288

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: £1,064, Upfront: £19,623, Break-even: 18.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1931 kWh 1487 kWh 444 kWh £381 £44 £426 £13,519 31.8 yrs £-5,007
3 kW 2896 kWh 2230 kWh 666 kWh £572 £67 £638 £15,554 24.4 yrs £-2,786
4 kW 3861 kWh 2973 kWh 888 kWh £762 £89 £851 £17,588 20.7 yrs £-565
5 kW 4827 kWh 3717 kWh 1110 kWh £953 £111 £1,064 £19,623 18.4 yrs £1,657
6 kW 5792 kWh 4460 kWh 1332 kWh £1,144 £133 £1,277 £21,657 17.0 yrs £3,878
7 kW 6758 kWh 5203 kWh 1554 kWh £1,334 £155 £1,490 £23,692 15.9 yrs £6,099
8 kW 7723 kWh 5947 kWh 1776 kWh £1,525 £178 £1,702 £25,726 15.1 yrs £8,321

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 WR15

Figures below are tailored to WR15 — click through for full league tables.

Big-Roof Britain Rank #540 of 2182
5.5 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1635 of 2997
11.3 years (UK avg 11.3 years)
~£1,077 /yr • £12,207 upfront
Standing-Charge Drag Rank #1009 of 2997
18.0% (UK avg 21.7%) drag on savings
£193 fixed • ~£1,077 /yr value

Your Area at a Glance

Your Electricity Rate
25.64p/kWh
Daily Fixed Charge
53.00p/day
Local Sunshine
965kWh/kW
A 1 kW system generates ~965 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: 72% • Flats: 10% • Bungalows: 16% Based on 1,970 properties

Coverage

Malvern Hills (77%)|Shropshire (21%)|Herefordshire, County of (3%)

Areas Covered

Tenbury, Clee, Lindridge, Cleobury Mortimer, Leominster North & Rural, Hampton, Bromyard Bringsty

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

SY8 (Shropshire)
≈10.0 km away
Local sunshine: ~948 kWh/kWp · -2% vs WR15
DY14 (Shropshire)
≈11.2 km away
Local sunshine: ~955 kWh/kWp · -1% vs WR15
HR6 (Herefordshire, County of)
≈13.9 km away
Local sunshine: ~953 kWh/kWp · -1% vs WR15
HR7 (Herefordshire, County of)
≈14.7 km away
Local sunshine: ~965 kWh/kWp · -0% vs WR15
WR6 (Malvern Hills)
≈18.2 km away
Local sunshine: ~961 kWh/kWp · -0% vs WR15
DY12 (Wyre Forest)
≈20.1 km away
Local sunshine: ~949 kWh/kWp · -2% vs WR15

Similar sunshine across the UK

B95 (Stratford-on-Avon)
~965 kWh/kWp · -0% vs WR15
LL77 (Isle of Anglesey)
~966 kWh/kWp · +0% vs WR15
LE19 (Blaby)
~965 kWh/kWp · -0% vs WR15