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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in HX1 (Calderdale)

See if solar pays off for you in Calderdale — 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
14.0 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£728
What you save every year
Profit Over 25 Years
£8,021
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 902 kWh/kW — 27 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 902 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)
902 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: £728, Upfront: £10,173, 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 1804 kWh 722 kWh 1083 kWh £183 £108 £291 £4,069 14.0 yrs £1,753
3 kW 2707 kWh 1083 kWh 1624 kWh £274 £162 £437 £6,104 14.0 yrs £2,629
4 kW 3609 kWh 1444 kWh 2165 kWh £366 £217 £582 £8,138 14.0 yrs £3,506
5 kW 4511 kWh 1804 kWh 2707 kWh £457 £271 £728 £10,173 14.0 yrs £4,382
6 kW 5413 kWh 2165 kWh 3248 kWh £548 £325 £873 £12,207 14.0 yrs £5,259
7 kW 6316 kWh 2526 kWh 3789 kWh £640 £379 £1,019 £14,242 14.0 yrs £6,135
8 kW 7218 kWh 2887 kWh 4331 kWh £731 £433 £1,164 £16,276 14.0 yrs £7,012

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: £866, Upfront: £12,273, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1083 kWh 722 kWh £274 £72 £346 £6,169 17.8 yrs £759
3 kW 2707 kWh 1624 kWh 1083 kWh £411 £108 £520 £8,204 15.8 yrs £2,189
4 kW 3609 kWh 2165 kWh 1444 kWh £548 £144 £693 £10,238 14.8 yrs £3,619
5 kW 4511 kWh 2707 kWh 1804 kWh £686 £180 £866 £12,273 14.2 yrs £5,049
6 kW 5413 kWh 3248 kWh 2165 kWh £823 £217 £1,039 £14,307 13.8 yrs £6,478
7 kW 6316 kWh 3789 kWh 2526 kWh £960 £253 £1,212 £16,342 13.5 yrs £7,908
8 kW 7218 kWh 4331 kWh 2887 kWh £1,097 £289 £1,386 £18,376 13.3 yrs £9,338

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: £935, Upfront: £13,673, Break-even: 14.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1263 kWh 541 kWh £320 £54 £374 £7,569 20.2 yrs £-87
3 kW 2707 kWh 1895 kWh 812 kWh £480 £81 £561 £9,604 17.1 yrs £1,619
4 kW 3609 kWh 2526 kWh 1083 kWh £640 £108 £748 £11,638 15.6 yrs £3,325
5 kW 4511 kWh 3158 kWh 1353 kWh £800 £135 £935 £13,673 14.6 yrs £5,032
6 kW 5413 kWh 3789 kWh 1624 kWh £960 £162 £1,122 £15,707 14.0 yrs £6,738
7 kW 6316 kWh 4421 kWh 1895 kWh £1,120 £189 £1,309 £17,742 13.6 yrs £8,445
8 kW 7218 kWh 5053 kWh 2165 kWh £1,280 £217 £1,496 £19,776 13.2 yrs £10,151

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: £956, Upfront: £15,423, Break-even: 16.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1317 kWh 487 kWh £334 £49 £382 £9,319 24.4 yrs £-1,671
3 kW 2707 kWh 1976 kWh 731 kWh £500 £73 £574 £11,354 19.8 yrs £118
4 kW 3609 kWh 2635 kWh 974 kWh £667 £97 £765 £13,388 17.5 yrs £1,907
5 kW 4511 kWh 3293 kWh 1218 kWh £834 £122 £956 £15,423 16.1 yrs £3,697
6 kW 5413 kWh 3952 kWh 1462 kWh £1,001 £146 £1,147 £17,457 15.2 yrs £5,486
7 kW 6316 kWh 4610 kWh 1705 kWh £1,168 £171 £1,338 £19,492 14.6 yrs £7,275
8 kW 7218 kWh 5269 kWh 1949 kWh £1,335 £195 £1,530 £21,526 14.1 yrs £9,065

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: £970, Upfront: £17,173, Break-even: 17.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1353 kWh 451 kWh £343 £45 £388 £11,069 28.5 yrs £-3,311
3 kW 2707 kWh 2030 kWh 677 kWh £514 £68 £582 £13,104 22.5 yrs £-1,466
4 kW 3609 kWh 2707 kWh 902 kWh £686 £90 £776 £15,138 19.5 yrs £379
5 kW 4511 kWh 3383 kWh 1128 kWh £857 £113 £970 £17,173 17.7 yrs £2,223
6 kW 5413 kWh 4060 kWh 1353 kWh £1,028 £135 £1,164 £19,207 16.5 yrs £4,068
7 kW 6316 kWh 4737 kWh 1579 kWh £1,200 £158 £1,358 £21,242 15.6 yrs £5,913
8 kW 7218 kWh 5413 kWh 1804 kWh £1,371 £180 £1,552 £23,276 15.0 yrs £7,757

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: £984, Upfront: £19,623, Break-even: 19.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1804 kWh 1389 kWh 415 kWh £352 £42 £393 £13,519 34.4 yrs £-5,650
3 kW 2707 kWh 2084 kWh 623 kWh £528 £62 £590 £15,554 26.4 yrs £-3,750
4 kW 3609 kWh 2779 kWh 830 kWh £704 £83 £787 £17,588 22.4 yrs £-1,850
5 kW 4511 kWh 3474 kWh 1038 kWh £880 £104 £984 £19,623 19.9 yrs £50
6 kW 5413 kWh 4168 kWh 1245 kWh £1,056 £125 £1,180 £21,657 18.3 yrs £1,950
7 kW 6316 kWh 4863 kWh 1453 kWh £1,232 £145 £1,377 £23,692 17.2 yrs £3,850
8 kW 7218 kWh 5558 kWh 1660 kWh £1,408 £166 £1,574 £25,726 16.3 yrs £5,750

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 HX1

Figures below are tailored to HX1 — click through for full league tables.

Big-Roof Britain Rank #1353 of 2182
4.8 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #2487 of 2997
12.2 years (UK avg 11.3 years)
~£831 /yr • £10,173 upfront
Standing-Charge Drag Rank #2370 of 2997
25.8% (UK avg 21.7%) drag on savings
£214 fixed • ~£831 /yr value

Your Area at a Glance

Your Electricity Rate
25.33p/kWh
Daily Fixed Charge
58.65p/day
Local Sunshine
902kWh/kW
A 1 kW system generates ~902 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: 67% • Flats: 30% • Bungalows: 1% Based on 10,861 properties

Coverage

Calderdale (100%)

Areas Covered

Town, Park, Skircoat, Warley, Sowerby Bridge, Northowram and Shelf, Greetland and Stainland, Elland + 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 Yorkshire

HX3 (Calderdale)
≈0.9 km away
Local sunshine: ~903 kWh/kWp · +0% vs HX1
HX2 (Calderdale)
≈2.6 km away
Local sunshine: ~905 kWh/kWp · +0% vs HX1
HX6 (Calderdale)
≈4.3 km away
Local sunshine: ~891 kWh/kWp · -1% vs HX1
HX5 (Calderdale)
≈4.7 km away
Local sunshine: ~901 kWh/kWp · -0% vs HX1
HX4 (Calderdale)
≈5.2 km away
Local sunshine: ~888 kWh/kWp · -2% vs HX1
HD6 (Calderdale)
≈6.0 km away
Local sunshine: ~908 kWh/kWp · +1% vs HX1

Similar sunshine across the UK

LD1 (Powys)
~902 kWh/kWp · -0% vs HX1
TS15 (Stockton-on-Tees)
~902 kWh/kWp · -0% vs HX1
NE47 (Northumberland)
~902 kWh/kWp · -0% vs HX1