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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in HD8 (Kirklees)

See if solar pays off for you in Kirklees — 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
13.8 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£739
What you save every year
Profit Over 25 Years
£8,295
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 Yorkshire, the current unit rate is 25.33p/kWh with a 58.65p/day standing charge. Your postcode’s south-facing sunshine yield is 916 kWh/kW — 13 below the regional median (929).

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 916 kWh per year on a south-facing roof. We value self-used electricity at 25.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
25.3p/kWh
Standing charge
58.6p/day
Sunshine yield (south)
916 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: £739, Upfront: £10,173, Break-even: 13.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1832 kWh 733 kWh 1099 kWh £186 £110 £295 £4,069 13.8 yrs £1,840
3 kW 2747 kWh 1099 kWh 1648 kWh £278 £165 £443 £6,104 13.8 yrs £2,761
4 kW 3663 kWh 1465 kWh 2198 kWh £371 £220 £591 £8,138 13.8 yrs £3,681
5 kW 4579 kWh 1832 kWh 2747 kWh £464 £275 £739 £10,173 13.8 yrs £4,601
6 kW 5495 kWh 2198 kWh 3297 kWh £557 £330 £886 £12,207 13.8 yrs £5,521
7 kW 6411 kWh 2564 kWh 3846 kWh £650 £385 £1,034 £14,242 13.8 yrs £6,442
8 kW 7326 kWh 2931 kWh 4396 kWh £742 £440 £1,182 £16,276 13.8 yrs £7,362

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: £879, Upfront: £12,273, Break-even: 14.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1832 kWh 1099 kWh 733 kWh £278 £73 £352 £6,169 17.5 yrs £864
3 kW 2747 kWh 1648 kWh 1099 kWh £418 £110 £527 £8,204 15.6 yrs £2,345
4 kW 3663 kWh 2198 kWh 1465 kWh £557 £147 £703 £10,238 14.6 yrs £3,827
5 kW 4579 kWh 2747 kWh 1832 kWh £696 £183 £879 £12,273 14.0 yrs £5,309
6 kW 5495 kWh 3297 kWh 2198 kWh £835 £220 £1,055 £14,307 13.6 yrs £6,791
7 kW 6411 kWh 3846 kWh 2564 kWh £974 £256 £1,231 £16,342 13.3 yrs £8,273
8 kW 7326 kWh 4396 kWh 2931 kWh £1,113 £293 £1,407 £18,376 13.1 yrs £9,754

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: £949, Upfront: £13,673, 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 1832 kWh 1282 kWh 549 kWh £325 £55 £380 £7,569 19.9 yrs £25
3 kW 2747 kWh 1923 kWh 824 kWh £487 £82 £570 £9,604 16.9 yrs £1,788
4 kW 3663 kWh 2564 kWh 1099 kWh £650 £110 £759 £11,638 15.3 yrs £3,550
5 kW 4579 kWh 3205 kWh 1374 kWh £812 £137 £949 £13,673 14.4 yrs £5,313
6 kW 5495 kWh 3846 kWh 1648 kWh £974 £165 £1,139 £15,707 13.8 yrs £7,075
7 kW 6411 kWh 4487 kWh 1923 kWh £1,137 £192 £1,329 £17,742 13.3 yrs £8,838
8 kW 7326 kWh 5128 kWh 2198 kWh £1,299 £220 £1,519 £19,776 13.0 yrs £10,601

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: £970, Upfront: £15,423, 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 1832 kWh 1337 kWh 495 kWh £339 £49 £388 £9,319 24.0 yrs £-1,556
3 kW 2747 kWh 2006 kWh 742 kWh £508 £74 £582 £11,354 19.5 yrs £290
4 kW 3663 kWh 2674 kWh 989 kWh £677 £99 £776 £13,388 17.2 yrs £2,137
5 kW 4579 kWh 3343 kWh 1236 kWh £847 £124 £970 £15,423 15.9 yrs £3,984
6 kW 5495 kWh 4011 kWh 1484 kWh £1,016 £148 £1,164 £17,457 15.0 yrs £5,831
7 kW 6411 kWh 4680 kWh 1731 kWh £1,185 £173 £1,358 £19,492 14.3 yrs £7,678
8 kW 7326 kWh 5348 kWh 1978 kWh £1,355 £198 £1,553 £21,526 13.9 yrs £9,525

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: £984, Upfront: £17,173, Break-even: 17.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1832 kWh 1374 kWh 458 kWh £348 £46 £394 £11,069 28.1 yrs £-3,194
3 kW 2747 kWh 2061 kWh 687 kWh £522 £69 £591 £13,104 22.2 yrs £-1,291
4 kW 3663 kWh 2747 kWh 916 kWh £696 £92 £787 £15,138 19.2 yrs £612
5 kW 4579 kWh 3434 kWh 1145 kWh £870 £114 £984 £17,173 17.4 yrs £2,515
6 kW 5495 kWh 4121 kWh 1374 kWh £1,044 £137 £1,181 £19,207 16.3 yrs £4,418
7 kW 6411 kWh 4808 kWh 1603 kWh £1,218 £160 £1,378 £21,242 15.4 yrs £6,321
8 kW 7326 kWh 5495 kWh 1832 kWh £1,392 £183 £1,575 £23,276 14.8 yrs £8,224

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: £998, Upfront: £19,623, Break-even: 19.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1832 kWh 1410 kWh 421 kWh £357 £42 £399 £13,519 33.9 yrs £-5,532
3 kW 2747 kWh 2115 kWh 632 kWh £536 £63 £599 £15,554 26.0 yrs £-3,573
4 kW 3663 kWh 2821 kWh 843 kWh £714 £84 £799 £17,588 22.0 yrs £-1,613
5 kW 4579 kWh 3526 kWh 1053 kWh £893 £105 £998 £19,623 19.7 yrs £346
6 kW 5495 kWh 4231 kWh 1264 kWh £1,072 £126 £1,198 £21,657 18.1 yrs £2,305
7 kW 6411 kWh 4936 kWh 1474 kWh £1,250 £147 £1,398 £23,692 16.9 yrs £4,264
8 kW 7326 kWh 5641 kWh 1685 kWh £1,429 £169 £1,597 £25,726 16.1 yrs £6,223

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 HD8

Figures below are tailored to HD8 — click through for full league tables.

Big-Roof Britain Rank #518 of 2182
5.6 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #2395 of 2997
12.1 years (UK avg 11.3 years)
~£844 /yr • £10,173 upfront
Standing-Charge Drag Rank #2293 of 2997
25.4% (UK avg 21.7%) drag on savings
£214 fixed • ~£844 /yr value

Your Area at a Glance

Your Electricity Rate
25.33p/kWh
Daily Fixed Charge
58.65p/day
Local Sunshine
916kWh/kW
A 1 kW system generates ~916 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: 77% • Flats: 8% • Bungalows: 14% Based on 7,655 properties

Coverage

Kirklees (100%)

Areas Covered

Denby Dale, Kirkburton, Almondbury, Newsome, Holme Valley South, Penistone West

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 Yorkshire

HD5 (Kirklees)
≈8.0 km away
Local sunshine: ~918 kWh/kWp · +0% vs HD8
HD9 (Kirklees)
≈8.2 km away
Local sunshine: ~891 kWh/kWp · -3% vs HD8
S36 (Barnsley)
≈9.3 km away
Local sunshine: ~911 kWh/kWp · -0% vs HD8
HD4 (Kirklees)
≈9.7 km away
Local sunshine: ~880 kWh/kWp · -4% vs HD8
HD1 (Kirklees)
≈9.8 km away
Local sunshine: ~908 kWh/kWp · -1% vs HD8
WF14 (Kirklees)
≈10.0 km away
Local sunshine: ~927 kWh/kWp · +1% vs HD8

Similar sunshine across the UK

SR5 (Sunderland)
~916 kWh/kWp · -0% vs HD8
DL14 (County Durham)
~916 kWh/kWp · +0% vs HD8
SR1 (Sunderland)
~916 kWh/kWp · -0% vs HD8