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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in CV22 (Rugby)

See if solar pays off for you in Rugby — 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
12.9 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£789
What you save every year
Profit Over 25 Years
£9,548
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 East Midlands, the current unit rate is 25.55p/kWh with a 49.09p/day standing charge. Your postcode’s south-facing sunshine yield is 973 kWh/kW — 4 above the regional median (968).

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 973 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
49.1p/day
Sunshine yield (south)
973 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: £789, Upfront: £10,173, 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 1945 kWh 778 kWh 1167 kWh £199 £117 £316 £4,069 12.9 yrs £2,242
3 kW 2918 kWh 1167 kWh 1751 kWh £298 £175 £473 £6,104 12.9 yrs £3,362
4 kW 3891 kWh 1556 kWh 2334 kWh £398 £233 £631 £8,138 12.9 yrs £4,483
5 kW 4863 kWh 1945 kWh 2918 kWh £497 £292 £789 £10,173 12.9 yrs £5,604
6 kW 5836 kWh 2334 kWh 3502 kWh £596 £350 £947 £12,207 12.9 yrs £6,725
7 kW 6809 kWh 2723 kWh 4085 kWh £696 £409 £1,104 £14,242 12.9 yrs £7,845
8 kW 7781 kWh 3112 kWh 4669 kWh £795 £467 £1,262 £16,276 12.9 yrs £8,966

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: £940, 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 1945 kWh 1167 kWh 778 kWh £298 £78 £376 £6,169 16.4 yrs £1,352
3 kW 2918 kWh 1751 kWh 1167 kWh £447 £117 £564 £8,204 14.5 yrs £3,077
4 kW 3891 kWh 2334 kWh 1556 kWh £596 £156 £752 £10,238 13.6 yrs £4,803
5 kW 4863 kWh 2918 kWh 1945 kWh £746 £195 £940 £12,273 13.1 yrs £6,529
6 kW 5836 kWh 3502 kWh 2334 kWh £895 £233 £1,128 £14,307 12.7 yrs £8,255
7 kW 6809 kWh 4085 kWh 2723 kWh £1,044 £272 £1,316 £16,342 12.4 yrs £9,980
8 kW 7781 kWh 4669 kWh 3112 kWh £1,193 £311 £1,504 £18,376 12.2 yrs £11,706

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: £1,016, 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 1945 kWh 1362 kWh 584 kWh £348 £58 £406 £7,569 18.6 yrs £556
3 kW 2918 kWh 2043 kWh 875 kWh £522 £88 £609 £9,604 15.8 yrs £2,585
4 kW 3891 kWh 2723 kWh 1167 kWh £696 £117 £813 £11,638 14.3 yrs £4,613
5 kW 4863 kWh 3404 kWh 1459 kWh £870 £146 £1,016 £13,673 13.5 yrs £6,641
6 kW 5836 kWh 4085 kWh 1751 kWh £1,044 £175 £1,219 £15,707 12.9 yrs £8,669
7 kW 6809 kWh 4766 kWh 2043 kWh £1,218 £204 £1,422 £17,742 12.5 yrs £10,698
8 kW 7781 kWh 5447 kWh 2334 kWh £1,392 £233 £1,625 £19,776 12.2 yrs £12,726

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: £1,038, 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 1945 kWh 1420 kWh 525 kWh £363 £53 £415 £9,319 22.4 yrs £-1,012
3 kW 2918 kWh 2130 kWh 788 kWh £544 £79 £623 £11,354 18.2 yrs £1,107
4 kW 3891 kWh 2840 kWh 1050 kWh £726 £105 £831 £13,388 16.1 yrs £3,226
5 kW 4863 kWh 3550 kWh 1313 kWh £907 £131 £1,038 £15,423 14.9 yrs £5,345
6 kW 5836 kWh 4260 kWh 1576 kWh £1,088 £158 £1,246 £17,457 14.0 yrs £7,464
7 kW 6809 kWh 4970 kWh 1838 kWh £1,270 £184 £1,454 £19,492 13.4 yrs £9,583
8 kW 7781 kWh 5680 kWh 2101 kWh £1,451 £210 £1,661 £21,526 13.0 yrs £11,702

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: £1,054, Upfront: £17,173, 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 1945 kWh 1459 kWh 486 kWh £373 £49 £421 £11,069 26.3 yrs £-2,641
3 kW 2918 kWh 2188 kWh 729 kWh £559 £73 £632 £13,104 20.7 yrs £-462
4 kW 3891 kWh 2918 kWh 973 kWh £746 £97 £843 £15,138 18.0 yrs £1,718
5 kW 4863 kWh 3647 kWh 1216 kWh £932 £122 £1,054 £17,173 16.3 yrs £3,897
6 kW 5836 kWh 4377 kWh 1459 kWh £1,118 £146 £1,264 £19,207 15.2 yrs £6,077
7 kW 6809 kWh 5106 kWh 1702 kWh £1,305 £170 £1,475 £21,242 14.4 yrs £8,256
8 kW 7781 kWh 5836 kWh 1945 kWh £1,491 £195 £1,686 £23,276 13.8 yrs £10,436

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: £1,069, 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 1945 kWh 1498 kWh 447 kWh £383 £45 £427 £13,519 31.6 yrs £-4,970
3 kW 2918 kWh 2247 kWh 671 kWh £574 £67 £641 £15,554 24.3 yrs £-2,730
4 kW 3891 kWh 2996 kWh 895 kWh £765 £89 £855 £17,588 20.6 yrs £-490
5 kW 4863 kWh 3745 kWh 1119 kWh £957 £112 £1,069 £19,623 18.4 yrs £1,750
6 kW 5836 kWh 4494 kWh 1342 kWh £1,148 £134 £1,282 £21,657 16.9 yrs £3,990
7 kW 6809 kWh 5243 kWh 1566 kWh £1,339 £157 £1,496 £23,692 15.8 yrs £6,230
8 kW 7781 kWh 5992 kWh 1790 kWh £1,531 £179 £1,710 £25,726 15.0 yrs £8,470

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 CV22

Figures below are tailored to CV22 — click through for full league tables.

Big-Roof Britain Rank #1016 of 2182
5.0 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #1571 of 2997
11.3 years (UK avg 11.3 years)
~£902 /yr • £10,173 upfront
Standing-Charge Drag Rank #1377 of 2997
19.9% (UK avg 21.7%) drag on savings
£179 fixed • ~£902 /yr value

Your Area at a Glance

Your Electricity Rate
25.55p/kWh
Daily Fixed Charge
49.09p/day
Local Sunshine
973kWh/kW
A 1 kW system generates ~973 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: 15% • Bungalows: 9% Based on 9,617 properties

Coverage

Rugby (98%)|Warwick (2%)

Areas Covered

Dunsmore, Admirals and Cawston, Rokeby and Overslade, Bilton, Eastlands, Paddox, New Bilton, Newbold and Brownsover + 2 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 East Midlands

CV23 (Rugby)
≈1.2 km away
Local sunshine: ~974 kWh/kWp · +0% vs CV22
CV21 (Rugby)
≈2.8 km away
Local sunshine: ~973 kWh/kWp · +0% vs CV22
LE17 (Harborough)
≈13.3 km away
Local sunshine: ~967 kWh/kWp · -1% vs CV22
NN11 (West Northamptonshire)
≈13.7 km away
Local sunshine: ~990 kWh/kWp · +2% vs CV22
CV3 (Coventry)
≈13.9 km away
Local sunshine: ~961 kWh/kWp · -1% vs CV22
CV2 (Coventry)
≈14.3 km away
Local sunshine: ~968 kWh/kWp · -0% vs CV22

Similar sunshine across the UK

WR99 (Worcester)
~972 kWh/kWp · -0% vs CV22
IP27 (West Suffolk)
~973 kWh/kWp · +0% vs CV22
HU18 (East Riding of Yorkshire)
~973 kWh/kWp · +0% vs CV22