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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in CV23 (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
£12,207
What you pay to get started
Annual Benefit
£948
What you save every year
Profit Over 25 Years
£11,483
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 974 kWh/kW — 5 above the regional median (968).

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 974 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)
974 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: £790, 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 1947 kWh 779 kWh 1168 kWh £199 £117 £316 £4,069 12.9 yrs £2,248
3 kW 2921 kWh 1168 kWh 1753 kWh £299 £175 £474 £6,104 12.9 yrs £3,373
4 kW 3895 kWh 1558 kWh 2337 kWh £398 £234 £632 £8,138 12.9 yrs £4,497
5 kW 4869 kWh 1947 kWh 2921 kWh £498 £292 £790 £10,173 12.9 yrs £5,621
6 kW 5842 kWh 2337 kWh 3505 kWh £597 £351 £948 £12,207 12.9 yrs £6,745
7 kW 6816 kWh 2726 kWh 4090 kWh £697 £409 £1,106 £14,242 12.9 yrs £7,869
8 kW 7790 kWh 3116 kWh 4674 kWh £796 £467 £1,263 £16,276 12.9 yrs £8,994

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: £941, Upfront: £12,273, Break-even: 13.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1947 kWh 1168 kWh 779 kWh £299 £78 £376 £6,169 16.4 yrs £1,360
3 kW 2921 kWh 1753 kWh 1168 kWh £448 £117 £565 £8,204 14.5 yrs £3,090
4 kW 3895 kWh 2337 kWh 1558 kWh £597 £156 £753 £10,238 13.6 yrs £4,819
5 kW 4869 kWh 2921 kWh 1947 kWh £746 £195 £941 £12,273 13.0 yrs £6,549
6 kW 5842 kWh 3505 kWh 2337 kWh £896 £234 £1,129 £14,307 12.7 yrs £8,279
7 kW 6816 kWh 4090 kWh 2726 kWh £1,045 £273 £1,318 £16,342 12.4 yrs £10,009
8 kW 7790 kWh 4674 kWh 3116 kWh £1,194 £312 £1,506 £18,376 12.2 yrs £11,739

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: £1,017, Upfront: £13,673, 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 1947 kWh 1363 kWh 584 kWh £348 £58 £407 £7,569 18.6 yrs £565
3 kW 2921 kWh 2045 kWh 876 kWh £522 £88 £610 £9,604 15.7 yrs £2,598
4 kW 3895 kWh 2726 kWh 1168 kWh £697 £117 £813 £11,638 14.3 yrs £4,631
5 kW 4869 kWh 3408 kWh 1461 kWh £871 £146 £1,017 £13,673 13.4 yrs £6,663
6 kW 5842 kWh 4090 kWh 1753 kWh £1,045 £175 £1,220 £15,707 12.9 yrs £8,696
7 kW 6816 kWh 4771 kWh 2045 kWh £1,219 £204 £1,424 £17,742 12.5 yrs £10,729
8 kW 7790 kWh 5453 kWh 2337 kWh £1,393 £234 £1,627 £19,776 12.2 yrs £12,761

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: £1,040, Upfront: £15,423, Break-even: 14.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1947 kWh 1422 kWh 526 kWh £363 £53 £416 £9,319 22.4 yrs £-1,003
3 kW 2921 kWh 2132 kWh 789 kWh £545 £79 £624 £11,354 18.2 yrs £1,121
4 kW 3895 kWh 2843 kWh 1052 kWh £726 £105 £832 £13,388 16.1 yrs £3,244
5 kW 4869 kWh 3554 kWh 1315 kWh £908 £131 £1,040 £15,423 14.8 yrs £5,368
6 kW 5842 kWh 4265 kWh 1577 kWh £1,090 £158 £1,247 £17,457 14.0 yrs £7,491
7 kW 6816 kWh 4976 kWh 1840 kWh £1,271 £184 £1,455 £19,492 13.4 yrs £9,615
8 kW 7790 kWh 5686 kWh 2103 kWh £1,453 £210 £1,663 £21,526 12.9 yrs £11,738

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: £1,055, 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 1947 kWh 1461 kWh 487 kWh £373 £49 £422 £11,069 26.2 yrs £-2,632
3 kW 2921 kWh 2191 kWh 730 kWh £560 £73 £633 £13,104 20.7 yrs £-448
4 kW 3895 kWh 2921 kWh 974 kWh £746 £97 £844 £15,138 17.9 yrs £1,736
5 kW 4869 kWh 3651 kWh 1217 kWh £933 £122 £1,055 £17,173 16.3 yrs £3,920
6 kW 5842 kWh 4382 kWh 1461 kWh £1,120 £146 £1,266 £19,207 15.2 yrs £6,105
7 kW 6816 kWh 5112 kWh 1704 kWh £1,306 £170 £1,477 £21,242 14.4 yrs £8,289
8 kW 7790 kWh 5842 kWh 1947 kWh £1,493 £195 £1,687 £23,276 13.8 yrs £10,473

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: £1,070, Upfront: £19,623, Break-even: 18.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1947 kWh 1500 kWh 448 kWh £383 £45 £428 £13,519 31.6 yrs £-4,961
3 kW 2921 kWh 2249 kWh 672 kWh £575 £67 £642 £15,554 24.2 yrs £-2,716
4 kW 3895 kWh 2999 kWh 896 kWh £766 £90 £856 £17,588 20.6 yrs £-471
5 kW 4869 kWh 3749 kWh 1120 kWh £958 £112 £1,070 £19,623 18.3 yrs £1,773
6 kW 5842 kWh 4499 kWh 1344 kWh £1,149 £134 £1,284 £21,657 16.9 yrs £4,018
7 kW 6816 kWh 5248 kWh 1568 kWh £1,341 £157 £1,498 £23,692 15.8 yrs £6,263
8 kW 7790 kWh 5998 kWh 1792 kWh £1,533 £179 £1,712 £25,726 15.0 yrs £8,507

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 CV23

Figures below are tailored to CV23 — click through for full league tables.

Big-Roof Britain Rank #592 of 2182
5.5 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #1572 of 2997
11.3 years (UK avg 11.3 years)
~£1,084 /yr • £12,207 upfront
Standing-Charge Drag Rank #624 of 2997
16.5% (UK avg 21.7%) drag on savings
£179 fixed • ~£1,084 /yr value

Your Area at a Glance

Your Electricity Rate
25.55p/kWh
Daily Fixed Charge
49.09p/day
Local Sunshine
974kWh/kW
A 1 kW system generates ~974 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: 85% • Flats: 7% • Bungalows: 7% Based on 8,058 properties

Coverage

Rugby (74%)|Stratford-on-Avon (12%)|West Northamptonshire (11%)|Warwick (3%)

Areas Covered

Wolston and the Lawfords, Dunsmore, Braunston & Crick, Revel and Binley Woods, Leam Valley, Clifton, Newton and Churchover, Hillmorton + 6 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

CV22 (Rugby)
≈1.2 km away
Local sunshine: ~973 kWh/kWp · -0% vs CV23
CV21 (Rugby)
≈3.8 km away
Local sunshine: ~973 kWh/kWp · -0% vs CV23
CV3 (Coventry)
≈12.8 km away
Local sunshine: ~961 kWh/kWp · -1% vs CV23
CV2 (Coventry)
≈13.3 km away
Local sunshine: ~968 kWh/kWp · -1% vs CV23
LE17 (Harborough)
≈13.9 km away
Local sunshine: ~967 kWh/kWp · -1% vs CV23
CV47 (Stratford-on-Avon)
≈14.3 km away
Local sunshine: ~978 kWh/kWp · +0% vs CV23

Similar sunshine across the UK

HU18 (East Riding of Yorkshire)
~973 kWh/kWp · -0% vs CV23
PL35 (Cornwall)
~974 kWh/kWp · +0% vs CV23
IP27 (West Suffolk)
~973 kWh/kWp · -0% vs CV23