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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in LL14 (Wrexham)

See if solar pays off for you in Wrexham — 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
12.7 years
After this, it's pure profit
Upfront Cost
£8,138
What you pay to get started
Annual Benefit
£639
What you save every year
Profit Over 25 Years
£7,834
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 North Wales and Mersey, the current unit rate is 27.72p/kWh with a 69.95p/day standing charge. Your postcode’s south-facing sunshine yield is 935 kWh/kW — 5 above the regional median (930).

Read the full story

A typical roof here lands around 4.0 kW, with most eligible homes comfortably fitting within 3–6 kW. Each kilowatt of panels produces roughly 935 kWh per year on a south-facing roof. We value self-used electricity at 27.7p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
27.7p/kWh
Standing charge
70.0p/day
Sunshine yield (south)
935 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: £799, Upfront: £10,173, Break-even: 12.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1869 kWh 748 kWh 1122 kWh £207 £112 £319 £4,069 12.7 yrs £2,320
3 kW 2804 kWh 1122 kWh 1682 kWh £311 £168 £479 £6,104 12.7 yrs £3,480
4 kW 3739 kWh 1495 kWh 2243 kWh £415 £224 £639 £8,138 12.7 yrs £4,639
5 kW 4673 kWh 1869 kWh 2804 kWh £518 £280 £799 £10,173 12.7 yrs £5,799
6 kW 5608 kWh 2243 kWh 3365 kWh £622 £336 £958 £12,207 12.7 yrs £6,959
7 kW 6543 kWh 2617 kWh 3926 kWh £725 £393 £1,118 £14,242 12.7 yrs £8,119
8 kW 7477 kWh 2991 kWh 4486 kWh £829 £449 £1,278 £16,276 12.7 yrs £9,279

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: £964, Upfront: £12,273, Break-even: 12.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1869 kWh 1122 kWh 748 kWh £311 £75 £386 £6,169 16.0 yrs £1,545
3 kW 2804 kWh 1682 kWh 1122 kWh £466 £112 £579 £8,204 14.2 yrs £3,367
4 kW 3739 kWh 2243 kWh 1495 kWh £622 £150 £771 £10,238 13.3 yrs £5,189
5 kW 4673 kWh 2804 kWh 1869 kWh £777 £187 £964 £12,273 12.7 yrs £7,012
6 kW 5608 kWh 3365 kWh 2243 kWh £933 £224 £1,157 £14,307 12.4 yrs £8,834
7 kW 6543 kWh 3926 kWh 2617 kWh £1,088 £262 £1,350 £16,342 12.1 yrs £10,656
8 kW 7477 kWh 4486 kWh 2991 kWh £1,244 £299 £1,543 £18,376 11.9 yrs £12,479

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: £1,047, Upfront: £13,673, 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 1869 kWh 1309 kWh 561 kWh £363 £56 £419 £7,569 18.1 yrs £807
3 kW 2804 kWh 1963 kWh 841 kWh £544 £84 £628 £9,604 15.3 yrs £2,961
4 kW 3739 kWh 2617 kWh 1122 kWh £725 £112 £838 £11,638 13.9 yrs £5,114
5 kW 4673 kWh 3271 kWh 1402 kWh £907 £140 £1,047 £13,673 13.1 yrs £7,268
6 kW 5608 kWh 3926 kWh 1682 kWh £1,088 £168 £1,256 £15,707 12.5 yrs £9,422
7 kW 6543 kWh 4580 kWh 1963 kWh £1,270 £196 £1,466 £17,742 12.1 yrs £11,575
8 kW 7477 kWh 5234 kWh 2243 kWh £1,451 £224 £1,675 £19,776 11.8 yrs £13,729

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: £1,072, Upfront: £15,423, Break-even: 14.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1869 kWh 1365 kWh 505 kWh £378 £50 £429 £9,319 21.7 yrs £-744
3 kW 2804 kWh 2047 kWh 757 kWh £567 £76 £643 £11,354 17.7 yrs £1,509
4 kW 3739 kWh 2729 kWh 1009 kWh £757 £101 £857 £13,388 15.6 yrs £3,762
5 kW 4673 kWh 3412 kWh 1262 kWh £946 £126 £1,072 £15,423 14.4 yrs £6,015
6 kW 5608 kWh 4094 kWh 1514 kWh £1,135 £151 £1,286 £17,457 13.6 yrs £8,268
7 kW 6543 kWh 4776 kWh 1767 kWh £1,324 £177 £1,501 £19,492 13.0 yrs £10,521
8 kW 7477 kWh 5459 kWh 2019 kWh £1,513 £202 £1,715 £21,526 12.6 yrs £12,774

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: £1,088, Upfront: £17,173, Break-even: 15.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1869 kWh 1402 kWh 467 kWh £389 £47 £435 £11,069 25.4 yrs £-2,362
3 kW 2804 kWh 2103 kWh 701 kWh £583 £70 £653 £13,104 20.1 yrs £-42
4 kW 3739 kWh 2804 kWh 935 kWh £777 £93 £871 £15,138 17.4 yrs £2,277
5 kW 4673 kWh 3505 kWh 1168 kWh £972 £117 £1,088 £17,173 15.8 yrs £4,596
6 kW 5608 kWh 4206 kWh 1402 kWh £1,166 £140 £1,306 £19,207 14.7 yrs £6,915
7 kW 6543 kWh 4907 kWh 1636 kWh £1,360 £164 £1,524 £21,242 13.9 yrs £9,235
8 kW 7477 kWh 5608 kWh 1869 kWh £1,555 £187 £1,741 £23,276 13.4 yrs £11,554

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: £1,105, Upfront: £19,623, Break-even: 17.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1869 kWh 1439 kWh 430 kWh £399 £43 £442 £13,519 30.6 yrs £-4,679
3 kW 2804 kWh 2159 kWh 645 kWh £599 £64 £663 £15,554 23.5 yrs £-2,294
4 kW 3739 kWh 2879 kWh 860 kWh £798 £86 £884 £17,588 19.9 yrs £92
5 kW 4673 kWh 3599 kWh 1075 kWh £998 £107 £1,105 £19,623 17.8 yrs £2,477
6 kW 5608 kWh 4318 kWh 1290 kWh £1,197 £129 £1,326 £21,657 16.3 yrs £4,863
7 kW 6543 kWh 5038 kWh 1505 kWh £1,397 £150 £1,547 £23,692 15.3 yrs £7,248
8 kW 7477 kWh 5758 kWh 1720 kWh £1,596 £172 £1,768 £25,726 14.6 yrs £9,634

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 LL14

Figures below are tailored to LL14 — click through for full league tables.

Big-Roof Britain Rank #1442 of 2182
4.7 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #1229 of 2997
11.0 years (UK avg 11.3 years)
~£738 /yr • £8,138 upfront
Standing-Charge Drag Rank #2828 of 2997
34.6% (UK avg 21.7%) drag on savings
£255 fixed • ~£738 /yr value

Your Area at a Glance

Your Electricity Rate
27.72p/kWh
Daily Fixed Charge
69.95p/day
Local Sunshine
935kWh/kW
A 1 kW system generates ~935 kWh per year. A typical home uses ~2,700 kWh per year.
Typical System Size
4.0kW
For houses & bungalows in this area

Local Property Data

Property Types

Houses: 72% • Flats: 15% • Bungalows: 12% Based on 7,529 properties

Coverage

Wrexham (97%)|Shropshire (2%)|Denbighshire (1%)

Areas Covered

Pant and Johnstown, Cefn West, Rhos, Ponciau, Ruabon, Esclusham, Penycae and Ruabon South, Chirk South + 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 North Wales and Mersey

LL11 (Wrexham)
≈7.1 km away
Local sunshine: ~939 kWh/kWp · +0% vs LL14
LL13 (Wrexham)
≈7.4 km away
Local sunshine: ~937 kWh/kWp · +0% vs LL14
LL20 (Denbighshire)
≈8.4 km away
Local sunshine: ~877 kWh/kWp · -6% vs LL14
LL12 (Wrexham)
≈11.2 km away
Local sunshine: ~939 kWh/kWp · +1% vs LL14
SY12 (Shropshire)
≈14.6 km away
Local sunshine: ~937 kWh/kWp · +0% vs LL14
SY11 (Shropshire)
≈15.2 km away
Local sunshine: ~944 kWh/kWp · +1% vs LL14

Similar sunshine across the UK

S44 (Bolsover)
~935 kWh/kWp · -0% vs LL14
S71 (Barnsley)
~935 kWh/kWp · +0% vs LL14
S41 (Chesterfield)
~935 kWh/kWp · -0% vs LL14