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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in NR19 (Breckland)

See if solar pays off for you in Breckland — 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
12.1 years
After this, it's pure profit
Upfront Cost
£10,173
What you pay to get started
Annual Benefit
£839
What you save every year
Profit Over 25 Years
£10,800
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 1010 kWh/kW — 1 above the regional median (1009).

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 1010 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)
1010 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: £839, Upfront: £10,173, 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 2020 kWh 808 kWh 1212 kWh £214 £121 £336 £4,069 12.1 yrs £2,642
3 kW 3030 kWh 1212 kWh 1818 kWh £322 £182 £503 £6,104 12.1 yrs £3,963
4 kW 4040 kWh 1616 kWh 2424 kWh £429 £242 £671 £8,138 12.1 yrs £5,284
5 kW 5050 kWh 2020 kWh 3030 kWh £536 £303 £839 £10,173 12.1 yrs £6,606
6 kW 6060 kWh 2424 kWh 3636 kWh £643 £364 £1,007 £12,207 12.1 yrs £7,927
7 kW 7070 kWh 2828 kWh 4242 kWh £750 £424 £1,174 £14,242 12.1 yrs £9,248
8 kW 8080 kWh 3232 kWh 4848 kWh £857 £485 £1,342 £16,276 12.1 yrs £10,569

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: £1,006, Upfront: £12,273, Break-even: 12.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2020 kWh 1212 kWh 808 kWh £322 £81 £402 £6,169 15.3 yrs £1,878
3 kW 3030 kWh 1818 kWh 1212 kWh £482 £121 £604 £8,204 13.6 yrs £3,867
4 kW 4040 kWh 2424 kWh 1616 kWh £643 £162 £805 £10,238 12.7 yrs £5,856
5 kW 5050 kWh 3030 kWh 2020 kWh £804 £202 £1,006 £12,273 12.2 yrs £7,845
6 kW 6060 kWh 3636 kWh 2424 kWh £965 £242 £1,207 £14,307 11.9 yrs £9,834
7 kW 7070 kWh 4242 kWh 2828 kWh £1,125 £283 £1,408 £16,342 11.6 yrs £11,822
8 kW 8080 kWh 4848 kWh 3232 kWh £1,286 £323 £1,609 £18,376 11.4 yrs £13,811

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: £1,089, Upfront: £13,673, Break-even: 12.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2020 kWh 1414 kWh 606 kWh £375 £61 £436 £7,569 17.4 yrs £1,146
3 kW 3030 kWh 2121 kWh 909 kWh £563 £91 £654 £9,604 14.7 yrs £3,468
4 kW 4040 kWh 2828 kWh 1212 kWh £750 £121 £871 £11,638 13.4 yrs £5,791
5 kW 5050 kWh 3535 kWh 1515 kWh £938 £152 £1,089 £13,673 12.6 yrs £8,114
6 kW 6060 kWh 4242 kWh 1818 kWh £1,125 £182 £1,307 £15,707 12.0 yrs £10,437
7 kW 7070 kWh 4949 kWh 2121 kWh £1,313 £212 £1,525 £17,742 11.6 yrs £12,760
8 kW 8080 kWh 5656 kWh 2424 kWh £1,501 £242 £1,743 £19,776 11.3 yrs £15,083

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: £1,114, Upfront: £15,423, 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 2020 kWh 1475 kWh 545 kWh £391 £55 £446 £9,319 20.9 yrs £-404
3 kW 3030 kWh 2212 kWh 818 kWh £587 £82 £669 £11,354 17.0 yrs £2,019
4 kW 4040 kWh 2949 kWh 1091 kWh £782 £109 £892 £13,388 15.0 yrs £4,442
5 kW 5050 kWh 3686 kWh 1364 kWh £978 £136 £1,114 £15,423 13.8 yrs £6,865
6 kW 6060 kWh 4424 kWh 1636 kWh £1,174 £164 £1,337 £17,457 13.1 yrs £9,288
7 kW 7070 kWh 5161 kWh 1909 kWh £1,369 £191 £1,560 £19,492 12.5 yrs £11,711
8 kW 8080 kWh 5898 kWh 2182 kWh £1,565 £218 £1,783 £21,526 12.1 yrs £14,134

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: £1,131, Upfront: £17,173, Break-even: 15.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2020 kWh 1515 kWh 505 kWh £402 £50 £452 £11,069 24.5 yrs £-2,020
3 kW 3030 kWh 2272 kWh 758 kWh £603 £76 £679 £13,104 19.3 yrs £469
4 kW 4040 kWh 3030 kWh 1010 kWh £804 £101 £905 £15,138 16.7 yrs £2,959
5 kW 5050 kWh 3788 kWh 1262 kWh £1,005 £126 £1,131 £17,173 15.2 yrs £5,449
6 kW 6060 kWh 4545 kWh 1515 kWh £1,206 £152 £1,357 £19,207 14.2 yrs £7,939
7 kW 7070 kWh 5302 kWh 1768 kWh £1,407 £177 £1,584 £21,242 13.4 yrs £10,428
8 kW 8080 kWh 6060 kWh 2020 kWh £1,608 £202 £1,810 £23,276 12.9 yrs £12,918

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: £1,148, Upfront: £19,623, Break-even: 17.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2020 kWh 1555 kWh 465 kWh £413 £46 £459 £13,519 29.4 yrs £-4,337
3 kW 3030 kWh 2333 kWh 697 kWh £619 £70 £689 £15,554 22.6 yrs £-1,780
4 kW 4040 kWh 3111 kWh 929 kWh £825 £93 £918 £17,588 19.2 yrs £776
5 kW 5050 kWh 3888 kWh 1162 kWh £1,032 £116 £1,148 £19,623 17.1 yrs £3,333
6 kW 6060 kWh 4666 kWh 1394 kWh £1,238 £139 £1,377 £21,657 15.7 yrs £5,889
7 kW 7070 kWh 5444 kWh 1626 kWh £1,444 £163 £1,607 £23,692 14.7 yrs £8,446
8 kW 8080 kWh 6222 kWh 1858 kWh £1,651 £186 £1,836 £25,726 14.0 yrs £11,003

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 NR19

Figures below are tailored to NR19 — click through for full league tables.

Big-Roof Britain Rank #1129 of 2182
5.0 kWp (UK avg 5.1 kWp)
~10 panels (≈430 W)
Solar Payback Index Rank #683 of 2997
10.6 years (UK avg 11.3 years)
~£964 /yr • £10,173 upfront
Standing-Charge Drag Rank #1099 of 2997
18.3% (UK avg 21.7%) drag on savings
£176 fixed • ~£964 /yr value

Your Area at a Glance

Your Electricity Rate
26.53p/kWh
Daily Fixed Charge
48.25p/day
Local Sunshine
1010kWh/kW
A 1 kW system generates ~1010 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: 60% • Flats: 14% • Bungalows: 24% Based on 5,238 properties

Coverage

Breckland (100%)

Areas Covered

Dereham Withburga, Dereham Neatherd, Dereham Toftwood, Shipdham-with-Scarning, Mattishall, Lincoln, Launditch

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

NR20 (Breckland)
≈5.0 km away
Local sunshine: ~1,005 kWh/kWp · -0% vs NR19
IP25 (Breckland)
≈13.7 km away
Local sunshine: ~1,002 kWh/kWp · -1% vs NR19
NR9 (South Norfolk)
≈14.7 km away
Local sunshine: ~1,001 kWh/kWp · -1% vs NR19
NR18 (South Norfolk)
≈16.5 km away
Local sunshine: ~1,010 kWh/kWp · -0% vs NR19
PE37 (Breckland)
≈17.2 km away
Local sunshine: ~996 kWh/kWp · -1% vs NR19
NR8 (Broadland)
≈18.2 km away
Local sunshine: ~1,000 kWh/kWp · -1% vs NR19

Similar sunshine across the UK

IG11 (Barking and Dagenham)
~1,010 kWh/kWp · -0% vs NR19
IG3 (Redbridge)
~1,010 kWh/kWp · +0% vs NR19
SE28 (Greenwich)
~1,010 kWh/kWp · +0% vs NR19