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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in TF2 (Telford and Wrekin)

See if solar pays off for you in Telford and Wrekin — 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
£765
What you save every year
Profit Over 25 Years
£8,961
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 942 kWh/kW — 0 below 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 942 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)
942 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: £765, 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 1883 kWh 753 kWh 1130 kWh £193 £113 £306 £4,069 13.3 yrs £2,054
3 kW 2825 kWh 1130 kWh 1695 kWh £290 £169 £459 £6,104 13.3 yrs £3,081
4 kW 3766 kWh 1507 kWh 2260 kWh £386 £226 £612 £8,138 13.3 yrs £4,108
5 kW 4708 kWh 1883 kWh 2825 kWh £483 £282 £765 £10,173 13.3 yrs £5,134
6 kW 5650 kWh 2260 kWh 3390 kWh £579 £339 £918 £12,207 13.3 yrs £6,161
7 kW 6591 kWh 2637 kWh 3955 kWh £676 £395 £1,071 £14,242 13.3 yrs £7,188
8 kW 7533 kWh 3013 kWh 4520 kWh £773 £452 £1,225 £16,276 13.3 yrs £8,215

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: £913, 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 1883 kWh 1130 kWh 753 kWh £290 £75 £365 £6,169 16.9 yrs £1,132
3 kW 2825 kWh 1695 kWh 1130 kWh £435 £113 £548 £8,204 15.0 yrs £2,748
4 kW 3766 kWh 2260 kWh 1507 kWh £579 £151 £730 £10,238 14.0 yrs £4,364
5 kW 4708 kWh 2825 kWh 1883 kWh £724 £188 £913 £12,273 13.4 yrs £5,980
6 kW 5650 kWh 3390 kWh 2260 kWh £869 £226 £1,095 £14,307 13.1 yrs £7,596
7 kW 6591 kWh 3955 kWh 2637 kWh £1,014 £264 £1,278 £16,342 12.8 yrs £9,212
8 kW 7533 kWh 4520 kWh 3013 kWh £1,159 £301 £1,460 £18,376 12.6 yrs £10,828

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: £986, Upfront: £13,673, Break-even: 13.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1883 kWh 1318 kWh 565 kWh £338 £56 £395 £7,569 19.2 yrs £321
3 kW 2825 kWh 1977 kWh 847 kWh £507 £85 £592 £9,604 16.2 yrs £2,232
4 kW 3766 kWh 2637 kWh 1130 kWh £676 £113 £789 £11,638 14.8 yrs £4,142
5 kW 4708 kWh 3296 kWh 1412 kWh £845 £141 £986 £13,673 13.9 yrs £6,053
6 kW 5650 kWh 3955 kWh 1695 kWh £1,014 £169 £1,184 £15,707 13.3 yrs £7,963
7 kW 6591 kWh 4614 kWh 1977 kWh £1,183 £198 £1,381 £17,742 12.8 yrs £9,874
8 kW 7533 kWh 5273 kWh 2260 kWh £1,352 £226 £1,578 £19,776 12.5 yrs £11,784

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: £1,008, 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 1883 kWh 1375 kWh 508 kWh £352 £51 £403 £9,319 23.1 yrs £-1,252
3 kW 2825 kWh 2062 kWh 763 kWh £529 £76 £605 £11,354 18.8 yrs £747
4 kW 3766 kWh 2750 kWh 1017 kWh £705 £102 £807 £13,388 16.6 yrs £2,745
5 kW 4708 kWh 3437 kWh 1271 kWh £881 £127 £1,008 £15,423 15.3 yrs £4,744
6 kW 5650 kWh 4124 kWh 1525 kWh £1,057 £153 £1,210 £17,457 14.4 yrs £6,743
7 kW 6591 kWh 4812 kWh 1780 kWh £1,234 £178 £1,412 £19,492 13.8 yrs £8,742
8 kW 7533 kWh 5499 kWh 2034 kWh £1,410 £203 £1,613 £21,526 13.3 yrs £10,741

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: £1,023, Upfront: £17,173, Break-even: 16.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1883 kWh 1412 kWh 471 kWh £362 £47 £409 £11,069 27.0 yrs £-2,884
3 kW 2825 kWh 2119 kWh 706 kWh £543 £71 £614 £13,104 21.3 yrs £-827
4 kW 3766 kWh 2825 kWh 942 kWh £724 £94 £818 £15,138 18.5 yrs £1,231
5 kW 4708 kWh 3531 kWh 1177 kWh £905 £118 £1,023 £17,173 16.8 yrs £3,289
6 kW 5650 kWh 4237 kWh 1412 kWh £1,086 £141 £1,228 £19,207 15.6 yrs £5,347
7 kW 6591 kWh 4944 kWh 1648 kWh £1,268 £165 £1,432 £21,242 14.8 yrs £7,404
8 kW 7533 kWh 5650 kWh 1883 kWh £1,449 £188 £1,637 £23,276 14.2 yrs £9,462

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: £1,038, 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 1883 kWh 1450 kWh 433 kWh £372 £43 £415 £13,519 32.6 yrs £-5,217
3 kW 2825 kWh 2175 kWh 650 kWh £558 £65 £623 £15,554 25.0 yrs £-3,100
4 kW 3766 kWh 2900 kWh 866 kWh £744 £87 £830 £17,588 21.2 yrs £-983
5 kW 4708 kWh 3625 kWh 1083 kWh £930 £108 £1,038 £19,623 18.9 yrs £1,133
6 kW 5650 kWh 4350 kWh 1299 kWh £1,115 £130 £1,245 £21,657 17.4 yrs £3,250
7 kW 6591 kWh 5075 kWh 1516 kWh £1,301 £152 £1,453 £23,692 16.3 yrs £5,367
8 kW 7533 kWh 5800 kWh 1733 kWh £1,487 £173 £1,660 £25,726 15.5 yrs £7,483

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 TF2

Figures below are tailored to TF2 — click through for full league tables.

Big-Roof Britain Rank #1201 of 2182
4.9 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1907 of 2997
11.6 years (UK avg 11.3 years)
~£876 /yr • £10,173 upfront
Standing-Charge Drag Rank #1898 of 2997
22.1% (UK avg 21.7%) drag on savings
£193 fixed • ~£876 /yr value

Your Area at a Glance

Your Electricity Rate
25.64p/kWh
Daily Fixed Charge
53.00p/day
Local Sunshine
942kWh/kW
A 1 kW system generates ~942 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: 78% • Flats: 10% • Bungalows: 10% Based on 11,564 properties

Coverage

Telford and Wrekin (100%)

Areas Covered

Oakengates & Ketley Bank, Donnington, St Georges, Madeley & Sutton Hill, Wrockwardine Wood & Trench, Muxton, Priorslee, The Nedge + 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 Midlands

TF3 (Telford and Wrekin)
≈2.7 km away
Local sunshine: ~942 kWh/kWp · +0% vs TF2
WV99 (Telford and Wrekin)
≈3.2 km away
Local sunshine: ~942 kWh/kWp · +0% vs TF2
TF1 (Telford and Wrekin)
≈4.1 km away
Local sunshine: ~937 kWh/kWp · -0% vs TF2
TF4 (Telford and Wrekin)
≈4.3 km away
Local sunshine: ~941 kWh/kWp · -0% vs TF2
TF11 (Shropshire)
≈5.9 km away
Local sunshine: ~938 kWh/kWp · -0% vs TF2
TF7 (Telford and Wrekin)
≈6.4 km away
Local sunshine: ~944 kWh/kWp · +0% vs TF2

Similar sunshine across the UK

YO91 (York)
~942 kWh/kWp · -0% vs TF2
NG7 (Nottingham)
~942 kWh/kWp · +0% vs TF2
CH4 (Cheshire West and Chester)
~942 kWh/kWp · +0% vs TF2