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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in PE32 (King's Lynn and West Norfolk)

See if solar pays off for you in King's Lynn and West Norfolk — 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
12.3 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£996
What you save every year
Profit Over 25 Years
£12,691
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 Eastern, the current unit rate is 26.53p/kWh with a 48.25p/day standing charge. Your postcode’s south-facing sunshine yield is 999 kWh/kW — 10 below the regional median (1009).

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 999 kWh per year on a south-facing roof. We value self-used electricity at 26.5p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.5p/kWh
Standing charge
48.2p/day
Sunshine yield (south)
999 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: £830, Upfront: £10,173, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1998 kWh 799 kWh 1199 kWh £212 £120 £332 £4,069 12.3 yrs £2,571
3 kW 2998 kWh 1199 kWh 1799 kWh £318 £180 £498 £6,104 12.3 yrs £3,856
4 kW 3997 kWh 1599 kWh 2398 kWh £424 £240 £664 £8,138 12.3 yrs £5,141
5 kW 4996 kWh 1998 kWh 2998 kWh £530 £300 £830 £10,173 12.3 yrs £6,426
6 kW 5995 kWh 2398 kWh 3597 kWh £636 £360 £996 £12,207 12.3 yrs £7,712
7 kW 6994 kWh 2798 kWh 4197 kWh £742 £420 £1,162 £14,242 12.3 yrs £8,997
8 kW 7994 kWh 3197 kWh 4796 kWh £848 £480 £1,328 £16,276 12.3 yrs £10,282

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: £995, Upfront: £12,273, Break-even: 12.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1998 kWh 1199 kWh 799 kWh £318 £80 £398 £6,169 15.5 yrs £1,792
3 kW 2998 kWh 1799 kWh 1199 kWh £477 £120 £597 £8,204 13.7 yrs £3,738
4 kW 3997 kWh 2398 kWh 1599 kWh £636 £160 £796 £10,238 12.9 yrs £5,684
5 kW 4996 kWh 2998 kWh 1998 kWh £795 £200 £995 £12,273 12.3 yrs £7,630
6 kW 5995 kWh 3597 kWh 2398 kWh £954 £240 £1,194 £14,307 12.0 yrs £9,576
7 kW 6994 kWh 4197 kWh 2798 kWh £1,113 £280 £1,393 £16,342 11.7 yrs £11,522
8 kW 7994 kWh 4796 kWh 3197 kWh £1,272 £320 £1,592 £18,376 11.5 yrs £13,468

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: £1,078, Upfront: £13,673, 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 1998 kWh 1399 kWh 600 kWh £371 £60 £431 £7,569 17.6 yrs £1,053
3 kW 2998 kWh 2098 kWh 899 kWh £557 £90 £647 £9,604 14.9 yrs £3,329
4 kW 3997 kWh 2798 kWh 1199 kWh £742 £120 £862 £11,638 13.5 yrs £5,605
5 kW 4996 kWh 3497 kWh 1499 kWh £928 £150 £1,078 £13,673 12.7 yrs £7,881
6 kW 5995 kWh 4197 kWh 1799 kWh £1,113 £180 £1,293 £15,707 12.1 yrs £10,158
7 kW 6994 kWh 4896 kWh 2098 kWh £1,299 £210 £1,509 £17,742 11.8 yrs £12,434
8 kW 7994 kWh 5596 kWh 2398 kWh £1,485 £240 £1,724 £19,776 11.5 yrs £14,710

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: £1,102, Upfront: £15,423, 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 1998 kWh 1459 kWh 540 kWh £387 £54 £441 £9,319 21.1 yrs £-499
3 kW 2998 kWh 2188 kWh 809 kWh £581 £81 £661 £11,354 17.2 yrs £1,876
4 kW 3997 kWh 2918 kWh 1079 kWh £774 £108 £882 £13,388 15.2 yrs £4,252
5 kW 4996 kWh 3647 kWh 1349 kWh £968 £135 £1,102 £15,423 14.0 yrs £6,627
6 kW 5995 kWh 4377 kWh 1619 kWh £1,161 £162 £1,323 £17,457 13.2 yrs £9,002
7 kW 6994 kWh 5106 kWh 1889 kWh £1,355 £189 £1,543 £19,492 12.6 yrs £11,378
8 kW 7994 kWh 5835 kWh 2158 kWh £1,548 £216 £1,764 £21,526 12.2 yrs £13,753

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: £1,119, Upfront: £17,173, Break-even: 15.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1998 kWh 1499 kWh 500 kWh £398 £50 £448 £11,069 24.7 yrs £-2,117
3 kW 2998 kWh 2248 kWh 749 kWh £596 £75 £671 £13,104 19.5 yrs £324
4 kW 3997 kWh 2998 kWh 999 kWh £795 £100 £895 £15,138 16.9 yrs £2,766
5 kW 4996 kWh 3747 kWh 1249 kWh £994 £125 £1,119 £17,173 15.3 yrs £5,207
6 kW 5995 kWh 4496 kWh 1499 kWh £1,193 £150 £1,343 £19,207 14.3 yrs £7,649
7 kW 6994 kWh 5246 kWh 1749 kWh £1,392 £175 £1,567 £21,242 13.6 yrs £10,090
8 kW 7994 kWh 5995 kWh 1998 kWh £1,591 £200 £1,790 £23,276 13.0 yrs £12,532

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: £1,136, Upfront: £19,623, Break-even: 17.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1998 kWh 1539 kWh 460 kWh £408 £46 £454 £13,519 29.8 yrs £-4,435
3 kW 2998 kWh 2308 kWh 689 kWh £612 £69 £681 £15,554 22.8 yrs £-1,927
4 kW 3997 kWh 3078 kWh 919 kWh £816 £92 £908 £17,588 19.4 yrs £580
5 kW 4996 kWh 3847 kWh 1149 kWh £1,021 £115 £1,136 £19,623 17.3 yrs £3,088
6 kW 5995 kWh 4616 kWh 1379 kWh £1,225 £138 £1,363 £21,657 15.9 yrs £5,595
7 kW 6994 kWh 5386 kWh 1609 kWh £1,429 £161 £1,590 £23,692 14.9 yrs £8,103
8 kW 7994 kWh 6155 kWh 1839 kWh £1,633 £184 £1,817 £25,726 14.2 yrs £10,610

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 PE32

Figures below are tailored to PE32 — click through for full league tables.

Big-Roof Britain Rank #275 of 2182
6.0 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #833 of 2997
10.7 years (UK avg 11.3 years)
~£1,145 /yr • £12,207 upfront
Standing-Charge Drag Rank #466 of 2997
15.4% (UK avg 21.7%) drag on savings
£176 fixed • ~£1,145 /yr value

Your Area at a Glance

Your Electricity Rate
26.53p/kWh
Daily Fixed Charge
48.25p/day
Local Sunshine
999kWh/kW
A 1 kW system generates ~999 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: 57% • Flats: 2% • Bungalows: 41% Based on 5,412 properties

Coverage

King's Lynn and West Norfolk (64%)|Breckland (36%)

Areas Covered

Gayton & Grimston, Massingham with Castle Acre, Launditch, Hermitage, Nar Valley, West Winch, St. Margaret's with St. Nicholas, Airfield + 1 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 Eastern

PE37 (Breckland)
≈11.3 km away
Local sunshine: ~996 kWh/kWp · -0% vs PE32
PE33 (King's Lynn and West Norfolk)
≈11.8 km away
Local sunshine: ~999 kWh/kWp · -0% vs PE32
PE35 (King's Lynn and West Norfolk)
≈12.3 km away
Local sunshine: ~1,011 kWh/kWp · +1% vs PE32
PE30 (King's Lynn and West Norfolk)
≈12.6 km away
Local sunshine: ~996 kWh/kWp · -0% vs PE32
PE34 (King's Lynn and West Norfolk)
≈15.9 km away
Local sunshine: ~1,000 kWh/kWp · +0% vs PE32
PE31 (King's Lynn and West Norfolk)
≈17.5 km away
Local sunshine: ~997 kWh/kWp · -0% vs PE32

Similar sunshine across the UK

BS35 (South Gloucestershire)
~999 kWh/kWp · +0% vs PE32
BR3 (Bromley)
~999 kWh/kWp · +0% vs PE32
BR2 (Bromley)
~999 kWh/kWp · -0% vs PE32