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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in TQ12 (Teignbridge)

See if solar pays off for you in Teignbridge — 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
11.6 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£876
What you save every year
Profit Over 25 Years
£11,739
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 Southern Western, the current unit rate is 26.82p/kWh with a 54.03p/day standing charge. Your postcode’s south-facing sunshine yield is 1048 kWh/kW — 35 above the regional median (1013).

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 1048 kWh per year on a south-facing roof. We value self-used electricity at 26.8p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.8p/kWh
Standing charge
54.0p/day
Sunshine yield (south)
1048 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: £876, Upfront: £10,173, Break-even: 11.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2096 kWh 838 kWh 1257 kWh £225 £126 £351 £4,069 11.6 yrs £2,943
3 kW 3144 kWh 1257 kWh 1886 kWh £337 £189 £526 £6,104 11.6 yrs £4,414
4 kW 4192 kWh 1677 kWh 2515 kWh £450 £251 £701 £8,138 11.6 yrs £5,886
5 kW 5240 kWh 2096 kWh 3144 kWh £562 £314 £876 £10,173 11.6 yrs £7,357
6 kW 6287 kWh 2515 kWh 3772 kWh £675 £377 £1,052 £12,207 11.6 yrs £8,828
7 kW 7335 kWh 2934 kWh 4401 kWh £787 £440 £1,227 £14,242 11.6 yrs £10,300
8 kW 8383 kWh 3353 kWh 5030 kWh £899 £503 £1,402 £16,276 11.6 yrs £11,771

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: £1,053, Upfront: £12,273, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2096 kWh 1257 kWh 838 kWh £337 £84 £421 £6,169 14.7 yrs £2,253
3 kW 3144 kWh 1886 kWh 1257 kWh £506 £126 £632 £8,204 13.0 yrs £4,429
4 kW 4192 kWh 2515 kWh 1677 kWh £675 £168 £842 £10,238 12.2 yrs £6,606
5 kW 5240 kWh 3144 kWh 2096 kWh £843 £210 £1,053 £12,273 11.7 yrs £8,782
6 kW 6287 kWh 3772 kWh 2515 kWh £1,012 £251 £1,263 £14,307 11.3 yrs £10,958
7 kW 7335 kWh 4401 kWh 2934 kWh £1,180 £293 £1,474 £16,342 11.1 yrs £13,135
8 kW 8383 kWh 5030 kWh 3353 kWh £1,349 £335 £1,684 £18,376 10.9 yrs £15,311

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: £1,141, Upfront: £13,673, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2096 kWh 1467 kWh 629 kWh £393 £63 £456 £7,569 16.6 yrs £1,558
3 kW 3144 kWh 2201 kWh 943 kWh £590 £94 £685 £9,604 14.0 yrs £4,087
4 kW 4192 kWh 2934 kWh 1257 kWh £787 £126 £913 £11,638 12.8 yrs £6,616
5 kW 5240 kWh 3668 kWh 1572 kWh £984 £157 £1,141 £13,673 12.0 yrs £9,145
6 kW 6287 kWh 4401 kWh 1886 kWh £1,180 £189 £1,369 £15,707 11.5 yrs £11,674
7 kW 7335 kWh 5135 kWh 2201 kWh £1,377 £220 £1,597 £17,742 11.1 yrs £14,202
8 kW 8383 kWh 5868 kWh 2515 kWh £1,574 £251 £1,825 £19,776 10.8 yrs £16,731

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: £1,167, Upfront: £15,423, 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 2096 kWh 1530 kWh 566 kWh £410 £57 £467 £9,319 20.0 yrs £19
3 kW 3144 kWh 2295 kWh 849 kWh £615 £85 £700 £11,354 16.2 yrs £2,654
4 kW 4192 kWh 3060 kWh 1132 kWh £821 £113 £934 £13,388 14.3 yrs £5,289
5 kW 5240 kWh 3825 kWh 1415 kWh £1,026 £141 £1,167 £15,423 13.2 yrs £7,923
6 kW 6287 kWh 4590 kWh 1698 kWh £1,231 £170 £1,401 £17,457 12.5 yrs £10,558
7 kW 7335 kWh 5355 kWh 1981 kWh £1,436 £198 £1,634 £19,492 11.9 yrs £13,193
8 kW 8383 kWh 6120 kWh 2263 kWh £1,641 £226 £1,868 £21,526 11.5 yrs £15,827

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: £1,185, Upfront: £17,173, Break-even: 14.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2096 kWh 1572 kWh 524 kWh £422 £52 £474 £11,069 23.4 yrs £-1,590
3 kW 3144 kWh 2358 kWh 786 kWh £632 £79 £711 £13,104 18.4 yrs £1,116
4 kW 4192 kWh 3144 kWh 1048 kWh £843 £105 £948 £15,138 16.0 yrs £3,821
5 kW 5240 kWh 3930 kWh 1310 kWh £1,054 £131 £1,185 £17,173 14.5 yrs £6,526
6 kW 6287 kWh 4716 kWh 1572 kWh £1,265 £157 £1,422 £19,207 13.5 yrs £9,231
7 kW 7335 kWh 5502 kWh 1834 kWh £1,476 £183 £1,659 £21,242 12.8 yrs £11,936
8 kW 8383 kWh 6287 kWh 2096 kWh £1,686 £210 £1,896 £23,276 12.3 yrs £14,641

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: £1,203, Upfront: £19,623, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2096 kWh 1614 kWh 482 kWh £433 £48 £481 £13,519 28.1 yrs £-3,899
3 kW 3144 kWh 2421 kWh 723 kWh £649 £72 £722 £15,554 21.6 yrs £-1,123
4 kW 4192 kWh 3228 kWh 964 kWh £866 £96 £962 £17,588 18.3 yrs £1,653
5 kW 5240 kWh 4034 kWh 1205 kWh £1,082 £121 £1,203 £19,623 16.3 yrs £4,428
6 kW 6287 kWh 4841 kWh 1446 kWh £1,298 £145 £1,443 £21,657 15.0 yrs £7,204
7 kW 7335 kWh 5648 kWh 1687 kWh £1,515 £169 £1,684 £23,692 14.1 yrs £9,980
8 kW 8383 kWh 6455 kWh 1928 kWh £1,731 £193 £1,924 £25,726 13.4 yrs £12,756

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 TQ12

Figures below are tailored to TQ12 — click through for full league tables.

Big-Roof Britain Rank #986 of 2182
5.1 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #250 of 2997
10.1 years (UK avg 11.3 years)
~£1,009 /yr • £10,173 upfront
Standing-Charge Drag Rank #1305 of 2997
19.5% (UK avg 21.7%) drag on savings
£197 fixed • ~£1,009 /yr value

Your Area at a Glance

Your Electricity Rate
26.82p/kWh
Daily Fixed Charge
54.03p/day
Local Sunshine
1048kWh/kW
A 1 kW system generates ~1048 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: 68% • Flats: 14% • Bungalows: 16% Based on 14,368 properties

Coverage

Teignbridge (100%)

Areas Covered

Buckland & Milber, Bushell, Ambrook, Bradley, Kerswell-with-Combe, College, Kingsteignton East, Kingsteignton West + 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 Southern Western

TQ2 (Torbay)
≈7.5 km away
Local sunshine: ~1,043 kWh/kWp · -1% vs TQ12
TQ14 (Teignbridge)
≈7.6 km away
Local sunshine: ~1,011 kWh/kWp · -3% vs TQ12
TQ1 (Torbay)
≈8.2 km away
Local sunshine: ~1,016 kWh/kWp · -3% vs TQ12
TQ3 (Torbay)
≈10.0 km away
Local sunshine: ~1,044 kWh/kWp · -0% vs TQ12
TQ13 (Teignbridge)
≈10.6 km away
Local sunshine: ~1,031 kWh/kWp · -2% vs TQ12
EX7 (Teignbridge)
≈11.1 km away
Local sunshine: ~1,027 kWh/kWp · -2% vs TQ12

Similar sunshine across the UK

ME9 (Swale)
~1,048 kWh/kWp · +0% vs TQ12
ME10 (Swale)
~1,048 kWh/kWp · +0% vs TQ12
NR13 (Broadland)
~1,048 kWh/kWp · +0% vs TQ12