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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in SY2 (Shropshire)

See if solar pays off for you in Shropshire — 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
13.3 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£768
What you save every year
Profit Over 25 Years
£9,016
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 944 kWh/kW — 2 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 944 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)
944 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: £768, Upfront: £10,173, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 755 kWh 1133 kWh £194 £113 £307 £4,069 13.3 yrs £2,071
3 kW 2833 kWh 1133 kWh 1700 kWh £291 £170 £461 £6,104 13.3 yrs £3,107
4 kW 3777 kWh 1511 kWh 2266 kWh £387 £227 £614 £8,138 13.3 yrs £4,143
5 kW 4722 kWh 1889 kWh 2833 kWh £484 £283 £768 £10,173 13.3 yrs £5,179
6 kW 5666 kWh 2266 kWh 3400 kWh £581 £340 £921 £12,207 13.3 yrs £6,214
7 kW 6610 kWh 2644 kWh 3966 kWh £678 £397 £1,075 £14,242 13.3 yrs £7,250
8 kW 7555 kWh 3022 kWh 4533 kWh £775 £453 £1,228 £16,276 13.3 yrs £8,286

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: £915, Upfront: £12,273, Break-even: 13.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1133 kWh 755 kWh £291 £76 £366 £6,169 16.9 yrs £1,153
3 kW 2833 kWh 1700 kWh 1133 kWh £436 £113 £549 £8,204 14.9 yrs £2,780
4 kW 3777 kWh 2266 kWh 1511 kWh £581 £151 £732 £10,238 14.0 yrs £4,406
5 kW 4722 kWh 2833 kWh 1889 kWh £726 £189 £915 £12,273 13.4 yrs £6,033
6 kW 5666 kWh 3400 kWh 2266 kWh £872 £227 £1,098 £14,307 13.0 yrs £7,659
7 kW 6610 kWh 3966 kWh 2644 kWh £1,017 £264 £1,281 £16,342 12.8 yrs £9,286
8 kW 7555 kWh 4533 kWh 3022 kWh £1,162 £302 £1,464 £18,376 12.5 yrs £10,912

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: £989, Upfront: £13,673, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1322 kWh 567 kWh £339 £57 £396 £7,569 19.1 yrs £344
3 kW 2833 kWh 1983 kWh 850 kWh £508 £85 £593 £9,604 16.2 yrs £2,266
4 kW 3777 kWh 2644 kWh 1133 kWh £678 £113 £791 £11,638 14.7 yrs £4,188
5 kW 4722 kWh 3305 kWh 1417 kWh £847 £142 £989 £13,673 13.8 yrs £6,109
6 kW 5666 kWh 3966 kWh 1700 kWh £1,017 £170 £1,187 £15,707 13.2 yrs £8,031
7 kW 6610 kWh 4627 kWh 1983 kWh £1,186 £198 £1,385 £17,742 12.8 yrs £9,953
8 kW 7555 kWh 5288 kWh 2266 kWh £1,356 £227 £1,583 £19,776 12.5 yrs £11,875

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: £1,011, Upfront: £15,423, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1379 kWh 510 kWh £354 £51 £405 £9,319 23.0 yrs £-1,229
3 kW 2833 kWh 2068 kWh 765 kWh £530 £76 £607 £11,354 18.7 yrs £782
4 kW 3777 kWh 2757 kWh 1020 kWh £707 £102 £809 £13,388 16.5 yrs £2,792
5 kW 4722 kWh 3447 kWh 1275 kWh £884 £127 £1,011 £15,423 15.3 yrs £4,803
6 kW 5666 kWh 4136 kWh 1530 kWh £1,061 £153 £1,214 £17,457 14.4 yrs £6,813
7 kW 6610 kWh 4826 kWh 1785 kWh £1,237 £178 £1,416 £19,492 13.8 yrs £8,824
8 kW 7555 kWh 5515 kWh 2040 kWh £1,414 £204 £1,618 £21,526 13.3 yrs £10,834

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: £1,026, Upfront: £17,173, Break-even: 16.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1417 kWh 472 kWh £363 £47 £410 £11,069 27.0 yrs £-2,861
3 kW 2833 kWh 2125 kWh 708 kWh £545 £71 £616 £13,104 21.3 yrs £-791
4 kW 3777 kWh 2833 kWh 944 kWh £726 £94 £821 £15,138 18.4 yrs £1,278
5 kW 4722 kWh 3541 kWh 1180 kWh £908 £118 £1,026 £17,173 16.7 yrs £3,348
6 kW 5666 kWh 4250 kWh 1417 kWh £1,090 £142 £1,231 £19,207 15.6 yrs £5,418
7 kW 6610 kWh 4958 kWh 1653 kWh £1,271 £165 £1,436 £21,242 14.8 yrs £7,487
8 kW 7555 kWh 5666 kWh 1889 kWh £1,453 £189 £1,642 £23,276 14.2 yrs £9,557

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: £1,041, Upfront: £19,623, Break-even: 18.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1889 kWh 1454 kWh 434 kWh £373 £43 £416 £13,519 32.5 yrs £-5,193
3 kW 2833 kWh 2181 kWh 652 kWh £559 £65 £624 £15,554 24.9 yrs £-3,064
4 kW 3777 kWh 2909 kWh 869 kWh £746 £87 £833 £17,588 21.1 yrs £-935
5 kW 4722 kWh 3636 kWh 1086 kWh £932 £109 £1,041 £19,623 18.9 yrs £1,193
6 kW 5666 kWh 4363 kWh 1303 kWh £1,119 £130 £1,249 £21,657 17.3 yrs £3,322
7 kW 6610 kWh 5090 kWh 1520 kWh £1,305 £152 £1,457 £23,692 16.3 yrs £5,451
8 kW 7555 kWh 5817 kWh 1738 kWh £1,492 £174 £1,665 £25,726 15.4 yrs £7,579

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 SY2

Figures below are tailored to SY2 — click through for full league tables.

Big-Roof Britain Rank #1395 of 2182
4.8 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1901 of 2997
11.6 years (UK avg 11.3 years)
~£878 /yr • £10,173 upfront
Standing-Charge Drag Rank #1867 of 2997
22.0% (UK avg 21.7%) drag on savings
£193 fixed • ~£878 /yr value

Your Area at a Glance

Your Electricity Rate
25.64p/kWh
Daily Fixed Charge
53.00p/day
Local Sunshine
944kWh/kW
A 1 kW system generates ~944 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: 74% • Flats: 17% • Bungalows: 7% Based on 5,895 properties

Coverage

Shropshire (100%)

Areas Covered

Abbey, Monkmoor, Underdale, Oteley & Reabrook, Column & Sutton, Quarry & Coton Hill, Severn Valley

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

SY99 (Shropshire)
≈1.4 km away
Local sunshine: ~944 kWh/kWp · +0% vs SY2
SY1 (Shropshire)
≈1.4 km away
Local sunshine: ~944 kWh/kWp · +0% vs SY2
SY3 (Shropshire)
≈2.7 km away
Local sunshine: ~944 kWh/kWp · -0% vs SY2
SY5 (Shropshire)
≈9.5 km away
Local sunshine: ~933 kWh/kWp · -1% vs SY2
TF6 (Telford and Wrekin)
≈12.4 km away
Local sunshine: ~937 kWh/kWp · -1% vs SY2
TF5 (Telford and Wrekin)
≈13.0 km away
Local sunshine: ~930 kWh/kWp · -2% vs SY2

Similar sunshine across the UK

LS24 (North Yorkshire)
~944 kWh/kWp · +0% vs SY2
SY11 (Shropshire)
~944 kWh/kWp · +0% vs SY2
S63 (Rotherham)
~944 kWh/kWp · -0% vs SY2