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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in NR13 (Broadland)

See if solar pays off for you in Broadland — 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
11.7 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£1,045
What you save every year
Profit Over 25 Years
£13,917
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 1048 kWh/kW — 39 above 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 1048 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)
1048 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: £871, Upfront: £10,173, Break-even: 11.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2097 kWh 839 kWh 1258 kWh £223 £126 £348 £4,069 11.7 yrs £2,897
3 kW 3145 kWh 1258 kWh 1887 kWh £334 £189 £522 £6,104 11.7 yrs £4,346
4 kW 4194 kWh 1677 kWh 2516 kWh £445 £252 £697 £8,138 11.7 yrs £5,795
5 kW 5242 kWh 2097 kWh 3145 kWh £556 £315 £871 £10,173 11.7 yrs £7,243
6 kW 6290 kWh 2516 kWh 3774 kWh £668 £377 £1,045 £12,207 11.7 yrs £8,692
7 kW 7339 kWh 2935 kWh 4403 kWh £779 £440 £1,219 £14,242 11.7 yrs £10,141
8 kW 8387 kWh 3355 kWh 5032 kWh £890 £503 £1,393 £16,276 11.7 yrs £11,589

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: £1,044, Upfront: £12,273, Break-even: 11.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2097 kWh 1258 kWh 839 kWh £334 £84 £418 £6,169 14.8 yrs £2,184
3 kW 3145 kWh 1887 kWh 1258 kWh £501 £126 £626 £8,204 13.1 yrs £4,326
4 kW 4194 kWh 2516 kWh 1677 kWh £668 £168 £835 £10,238 12.3 yrs £6,467
5 kW 5242 kWh 3145 kWh 2097 kWh £834 £210 £1,044 £12,273 11.8 yrs £8,609
6 kW 6290 kWh 3774 kWh 2516 kWh £1,001 £252 £1,253 £14,307 11.4 yrs £10,751
7 kW 7339 kWh 4403 kWh 2935 kWh £1,168 £294 £1,462 £16,342 11.2 yrs £12,893
8 kW 8387 kWh 5032 kWh 3355 kWh £1,335 £335 £1,671 £18,376 11.0 yrs £15,035

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: £1,131, Upfront: £13,673, Break-even: 12.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2097 kWh 1468 kWh 629 kWh £389 £63 £452 £7,569 16.7 yrs £1,477
3 kW 3145 kWh 2202 kWh 944 kWh £584 £94 £678 £9,604 14.2 yrs £3,965
4 kW 4194 kWh 2935 kWh 1258 kWh £779 £126 £905 £11,638 12.9 yrs £6,454
5 kW 5242 kWh 3669 kWh 1573 kWh £973 £157 £1,131 £13,673 12.1 yrs £8,942
6 kW 6290 kWh 4403 kWh 1887 kWh £1,168 £189 £1,357 £15,707 11.6 yrs £11,431
7 kW 7339 kWh 5137 kWh 2202 kWh £1,363 £220 £1,583 £17,742 11.2 yrs £13,919
8 kW 8387 kWh 5871 kWh 2516 kWh £1,558 £252 £1,809 £19,776 10.9 yrs £16,408

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: £1,157, Upfront: £15,423, Break-even: 13.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2097 kWh 1531 kWh 566 kWh £406 £57 £463 £9,319 20.1 yrs £-65
3 kW 3145 kWh 2296 kWh 849 kWh £609 £85 £694 £11,354 16.4 yrs £2,527
4 kW 4194 kWh 3061 kWh 1132 kWh £812 £113 £925 £13,388 14.5 yrs £5,120
5 kW 5242 kWh 3827 kWh 1415 kWh £1,015 £142 £1,157 £15,423 13.3 yrs £7,712
6 kW 6290 kWh 4592 kWh 1698 kWh £1,218 £170 £1,388 £17,457 12.6 yrs £10,305
7 kW 7339 kWh 5357 kWh 1981 kWh £1,421 £198 £1,619 £19,492 12.0 yrs £12,897
8 kW 8387 kWh 6123 kWh 2265 kWh £1,624 £226 £1,851 £21,526 11.6 yrs £15,489

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: £1,174, Upfront: £17,173, 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 2097 kWh 1573 kWh 524 kWh £417 £52 £470 £11,069 23.6 yrs £-1,676
3 kW 3145 kWh 2359 kWh 786 kWh £626 £79 £704 £13,104 18.6 yrs £985
4 kW 4194 kWh 3145 kWh 1048 kWh £834 £105 £939 £15,138 16.1 yrs £3,647
5 kW 5242 kWh 3931 kWh 1310 kWh £1,043 £131 £1,174 £17,173 14.6 yrs £6,309
6 kW 6290 kWh 4718 kWh 1573 kWh £1,252 £157 £1,409 £19,207 13.6 yrs £8,971
7 kW 7339 kWh 5504 kWh 1835 kWh £1,460 £183 £1,644 £21,242 12.9 yrs £11,632
8 kW 8387 kWh 6290 kWh 2097 kWh £1,669 £210 £1,879 £23,276 12.4 yrs £14,294

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: £1,191, Upfront: £19,623, Break-even: 16.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2097 kWh 1615 kWh 482 kWh £428 £48 £477 £13,519 28.4 yrs £-3,988
3 kW 3145 kWh 2422 kWh 723 kWh £642 £72 £715 £15,554 21.8 yrs £-1,257
4 kW 4194 kWh 3229 kWh 965 kWh £857 £96 £953 £17,588 18.5 yrs £1,474
5 kW 5242 kWh 4036 kWh 1206 kWh £1,071 £121 £1,191 £19,623 16.5 yrs £4,205
6 kW 6290 kWh 4844 kWh 1447 kWh £1,285 £145 £1,430 £21,657 15.1 yrs £6,936
7 kW 7339 kWh 5651 kWh 1688 kWh £1,499 £169 £1,668 £23,692 14.2 yrs £9,668
8 kW 8387 kWh 6458 kWh 1929 kWh £1,713 £193 £1,906 £25,726 13.5 yrs £12,399

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 NR13

Figures below are tailored to NR13 — click through for full league tables.

Big-Roof Britain Rank #258 of 2182
6.0 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #281 of 2997
10.2 years (UK avg 11.3 years)
~£1,201 /yr • £12,207 upfront
Standing-Charge Drag Rank #206 of 2997
14.7% (UK avg 21.7%) drag on savings
£176 fixed • ~£1,201 /yr value

Your Area at a Glance

Your Electricity Rate
26.53p/kWh
Daily Fixed Charge
48.25p/day
Local Sunshine
1048kWh/kW
A 1 kW system generates ~1048 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: 70% • Flats: 4% • Bungalows: 26% Based on 8,835 properties

Coverage

Broadland (100%)

Areas Covered

Blofield with South Walsham, Brundall, Wroxham, Marshes, Acle, Plumstead, Burlingham, Sprowston East + 3 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

NR7 (Broadland)
≈8.2 km away
Local sunshine: ~1,011 kWh/kWp · -4% vs NR13
NR99 (Norwich)
≈9.4 km away
Local sunshine: ~1,011 kWh/kWp · -4% vs NR13
NR1 (Norwich)
≈9.5 km away
Local sunshine: ~1,011 kWh/kWp · -4% vs NR13
NR14 (South Norfolk)
≈10.1 km away
Local sunshine: ~1,057 kWh/kWp · +1% vs NR13
NR3 (Norwich)
≈10.3 km away
Local sunshine: ~1,001 kWh/kWp · -5% vs NR13
NR2 (Norwich)
≈11.2 km away
Local sunshine: ~1,001 kWh/kWp · -5% vs NR13

Similar sunshine across the UK

ME10 (Swale)
~1,048 kWh/kWp · -0% vs NR13
ME9 (Swale)
~1,048 kWh/kWp · -0% vs NR13
TN21 (Wealden)
~1,049 kWh/kWp · +0% vs NR13