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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in CT10 (Thanet)

See if solar pays off for you in Thanet — 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
11.3 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£1,077
What you save every year
Profit Over 25 Years
£14,719
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 South East, the current unit rate is 26.92p/kWh with a 47.60p/day standing charge. Your postcode’s south-facing sunshine yield is 1071 kWh/kW — 42 above the regional median (1029).

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 1071 kWh per year on a south-facing roof. We value self-used electricity at 26.9p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.9p/kWh
Standing charge
47.6p/day
Sunshine yield (south)
1071 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: £898, Upfront: £10,173, Break-even: 11.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2141 kWh 856 kWh 1285 kWh £231 £128 £359 £4,069 11.3 yrs £3,111
3 kW 3212 kWh 1285 kWh 1927 kWh £346 £193 £539 £6,104 11.3 yrs £4,667
4 kW 4282 kWh 1713 kWh 2569 kWh £461 £257 £718 £8,138 11.3 yrs £6,223
5 kW 5353 kWh 2141 kWh 3212 kWh £576 £321 £898 £10,173 11.3 yrs £7,778
6 kW 6423 kWh 2569 kWh 3854 kWh £692 £385 £1,077 £12,207 11.3 yrs £9,334
7 kW 7494 kWh 2998 kWh 4496 kWh £807 £450 £1,257 £14,242 11.3 yrs £10,890
8 kW 8564 kWh 3426 kWh 5139 kWh £922 £514 £1,436 £16,276 11.3 yrs £12,445

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: £1,079, Upfront: £12,273, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2141 kWh 1285 kWh 856 kWh £346 £86 £431 £6,169 14.3 yrs £2,460
3 kW 3212 kWh 1927 kWh 1285 kWh £519 £128 £647 £8,204 12.7 yrs £4,741
4 kW 4282 kWh 2569 kWh 1713 kWh £692 £171 £863 £10,238 11.9 yrs £7,021
5 kW 5353 kWh 3212 kWh 2141 kWh £865 £214 £1,079 £12,273 11.4 yrs £9,301
6 kW 6423 kWh 3854 kWh 2569 kWh £1,037 £257 £1,294 £14,307 11.1 yrs £11,581
7 kW 7494 kWh 4496 kWh 2998 kWh £1,210 £300 £1,510 £16,342 10.8 yrs £13,862
8 kW 8564 kWh 5139 kWh 3426 kWh £1,383 £343 £1,726 £18,376 10.6 yrs £16,142

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: £1,169, Upfront: £13,673, 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 2141 kWh 1499 kWh 642 kWh £403 £64 £468 £7,569 16.2 yrs £1,785
3 kW 3212 kWh 2248 kWh 963 kWh £605 £96 £702 £9,604 13.7 yrs £4,428
4 kW 4282 kWh 2998 kWh 1285 kWh £807 £128 £935 £11,638 12.4 yrs £7,070
5 kW 5353 kWh 3747 kWh 1606 kWh £1,009 £161 £1,169 £13,673 11.7 yrs £9,713
6 kW 6423 kWh 4496 kWh 1927 kWh £1,210 £193 £1,403 £15,707 11.2 yrs £12,355
7 kW 7494 kWh 5246 kWh 2248 kWh £1,412 £225 £1,637 £17,742 10.8 yrs £14,998
8 kW 8564 kWh 5995 kWh 2569 kWh £1,614 £257 £1,871 £19,776 10.6 yrs £17,640

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: £1,196, Upfront: £15,423, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2141 kWh 1563 kWh 578 kWh £421 £58 £479 £9,319 19.5 yrs £252
3 kW 3212 kWh 2345 kWh 867 kWh £631 £87 £718 £11,354 15.8 yrs £3,004
4 kW 4282 kWh 3126 kWh 1156 kWh £842 £116 £957 £13,388 14.0 yrs £5,755
5 kW 5353 kWh 3908 kWh 1445 kWh £1,052 £145 £1,196 £15,423 12.9 yrs £8,506
6 kW 6423 kWh 4689 kWh 1734 kWh £1,262 £173 £1,436 £17,457 12.2 yrs £11,257
7 kW 7494 kWh 5471 kWh 2023 kWh £1,473 £202 £1,675 £19,492 11.6 yrs £14,008
8 kW 8564 kWh 6252 kWh 2312 kWh £1,683 £231 £1,914 £21,526 11.2 yrs £16,760

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: £1,215, Upfront: £17,173, Break-even: 14.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2141 kWh 1606 kWh 535 kWh £432 £54 £486 £11,069 22.8 yrs £-1,353
3 kW 3212 kWh 2409 kWh 803 kWh £648 £80 £729 £13,104 18.0 yrs £1,471
4 kW 4282 kWh 3212 kWh 1071 kWh £865 £107 £972 £15,138 15.6 yrs £4,295
5 kW 5353 kWh 4015 kWh 1338 kWh £1,081 £134 £1,215 £17,173 14.1 yrs £7,118
6 kW 6423 kWh 4817 kWh 1606 kWh £1,297 £161 £1,457 £19,207 13.2 yrs £9,942
7 kW 7494 kWh 5620 kWh 1873 kWh £1,513 £187 £1,700 £21,242 12.5 yrs £12,766
8 kW 8564 kWh 6423 kWh 2141 kWh £1,729 £214 £1,943 £23,276 12.0 yrs £15,589

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: £1,233, Upfront: £19,623, Break-even: 15.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2141 kWh 1649 kWh 492 kWh £444 £49 £493 £13,519 27.4 yrs £-3,658
3 kW 3212 kWh 2473 kWh 739 kWh £666 £74 £740 £15,554 21.0 yrs £-762
4 kW 4282 kWh 3297 kWh 985 kWh £888 £98 £986 £17,588 17.8 yrs £2,134
5 kW 5353 kWh 4122 kWh 1231 kWh £1,110 £123 £1,233 £19,623 15.9 yrs £5,031
6 kW 6423 kWh 4946 kWh 1477 kWh £1,331 £148 £1,479 £21,657 14.6 yrs £7,927
7 kW 7494 kWh 5770 kWh 1724 kWh £1,553 £172 £1,726 £23,692 13.7 yrs £10,823
8 kW 8564 kWh 6595 kWh 1970 kWh £1,775 £197 £1,972 £25,726 13.0 yrs £13,719

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 CT10

Figures below are tailored to CT10 — click through for full league tables.

Big-Roof Britain Rank #603 of 2182
5.5 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #119 of 2997
9.8 years (UK avg 11.3 years)
~£1,240 /yr • £12,207 upfront
Standing-Charge Drag Rank #87 of 2997
14.0% (UK avg 21.7%) drag on savings
£174 fixed • ~£1,240 /yr value

Your Area at a Glance

Your Electricity Rate
26.92p/kWh
Daily Fixed Charge
47.60p/day
Local Sunshine
1071kWh/kW
A 1 kW system generates ~1071 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: 50% • Flats: 27% • Bungalows: 20% Based on 7,851 properties

Coverage

Thanet (100%)

Areas Covered

Viking, St Peters, Bradstowe, Beacon Road, Kingsgate, Cliftonville East, Dane Valley, Thanet Villages + 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 South East

CT11 (Thanet)
≈3.0 km away
Local sunshine: ~1,078 kWh/kWp · +1% vs CT10
CT12 (Thanet)
≈3.6 km away
Local sunshine: ~1,094 kWh/kWp · +2% vs CT10
CT9 (Thanet)
≈4.4 km away
Local sunshine: ~1,086 kWh/kWp · +1% vs CT10
CT8 (Thanet)
≈7.0 km away
Local sunshine: ~1,092 kWh/kWp · +2% vs CT10
CT7 (Thanet)
≈9.2 km away
Local sunshine: ~1,091 kWh/kWp · +2% vs CT10
CT13 (Dover)
≈11.7 km away
Local sunshine: ~1,100 kWh/kWp · +3% vs CT10

Similar sunshine across the UK

BH21 (Dorset)
~1,071 kWh/kWp · +0% vs CT10
BH16 (Dorset)
~1,071 kWh/kWp · +0% vs CT10
CO11 (Tendring)
~1,070 kWh/kWp · -0% vs CT10