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Solar panel cost in South Norfolk (IP20)

See realistic solar installation costs, savings and payback for IP20 (South Norfolk) in under a minute using official UK data. Start with the calculator, then get a no-obligation quote from an MCS-certified installer. You can also ask the SolarByPostcode assistant to sanity-check your roof, bills and plans.

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
12.9 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£947
What you save every year
Profit Over 25 Years
£11,475
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 23.32p/kWh with a 54.18p/day standing charge. Your postcode’s south-facing sunshine yield is 1030 kWh/kW — 21 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 1030 kWh per year on a south-facing roof. We value self-used electricity at 23.3p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
23.3p/kWh
Standing charge
54.2p/day
Sunshine yield (south)
1030 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: £789, Upfront: £10,173, Break-even: 12.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2060 kWh 824 kWh 1236 kWh £192 £124 £316 £4,069 12.9 yrs £2,246
3 kW 3090 kWh 1236 kWh 1854 kWh £288 £185 £474 £6,104 12.9 yrs £3,369
4 kW 4120 kWh 1648 kWh 2472 kWh £384 £247 £632 £8,138 12.9 yrs £4,492
5 kW 5150 kWh 2060 kWh 3090 kWh £480 £309 £789 £10,173 12.9 yrs £5,615
6 kW 6180 kWh 2472 kWh 3708 kWh £576 £371 £947 £12,207 12.9 yrs £6,738
7 kW 7210 kWh 2884 kWh 4326 kWh £673 £433 £1,105 £14,242 12.9 yrs £7,861
8 kW 8240 kWh 3296 kWh 4944 kWh £769 £494 £1,263 £16,276 12.9 yrs £8,984

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: £927, Upfront: £12,273, Break-even: 13.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2060 kWh 1236 kWh 824 kWh £288 £82 £371 £6,169 16.6 yrs £1,244
3 kW 3090 kWh 1854 kWh 1236 kWh £432 £124 £556 £8,204 14.8 yrs £2,916
4 kW 4120 kWh 2472 kWh 1648 kWh £576 £165 £741 £10,238 13.8 yrs £4,587
5 kW 5150 kWh 3090 kWh 2060 kWh £721 £206 £927 £12,273 13.2 yrs £6,259
6 kW 6180 kWh 3708 kWh 2472 kWh £865 £247 £1,112 £14,307 12.9 yrs £7,931
7 kW 7210 kWh 4326 kWh 2884 kWh £1,009 £288 £1,297 £16,342 12.6 yrs £9,603
8 kW 8240 kWh 4944 kWh 3296 kWh £1,153 £330 £1,483 £18,376 12.4 yrs £11,275

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: £995, Upfront: £13,673, Break-even: 13.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2060 kWh 1442 kWh 618 kWh £336 £62 £398 £7,569 19.0 yrs £392
3 kW 3090 kWh 2163 kWh 927 kWh £504 £93 £597 £9,604 16.1 yrs £2,339
4 kW 4120 kWh 2884 kWh 1236 kWh £673 £124 £796 £11,638 14.6 yrs £4,285
5 kW 5150 kWh 3605 kWh 1545 kWh £841 £155 £995 £13,673 13.7 yrs £6,231
6 kW 6180 kWh 4326 kWh 1854 kWh £1,009 £185 £1,194 £15,707 13.2 yrs £8,177
7 kW 7210 kWh 5047 kWh 2163 kWh £1,177 £216 £1,393 £17,742 12.7 yrs £10,124
8 kW 8240 kWh 5768 kWh 2472 kWh £1,345 £247 £1,592 £19,776 12.4 yrs £12,070

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: £1,016, Upfront: £15,423, 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 2060 kWh 1504 kWh 556 kWh £351 £56 £406 £9,319 22.9 yrs £-1,193
3 kW 3090 kWh 2256 kWh 834 kWh £526 £83 £609 £11,354 18.6 yrs £836
4 kW 4120 kWh 3008 kWh 1112 kWh £701 £111 £813 £13,388 16.5 yrs £2,864
5 kW 5150 kWh 3760 kWh 1390 kWh £877 £139 £1,016 £15,423 15.2 yrs £4,893
6 kW 6180 kWh 4511 kWh 1669 kWh £1,052 £167 £1,219 £17,457 14.3 yrs £6,921
7 kW 7210 kWh 5263 kWh 1947 kWh £1,227 £195 £1,422 £19,492 13.7 yrs £8,950
8 kW 8240 kWh 6015 kWh 2225 kWh £1,403 £222 £1,625 £21,526 13.2 yrs £10,978

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: £1,029, Upfront: £17,173, Break-even: 16.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2060 kWh 1545 kWh 515 kWh £360 £52 £412 £11,069 26.9 yrs £-2,833
3 kW 3090 kWh 2318 kWh 772 kWh £540 £77 £618 £13,104 21.2 yrs £-750
4 kW 4120 kWh 3090 kWh 1030 kWh £721 £103 £824 £15,138 18.4 yrs £1,334
5 kW 5150 kWh 3862 kWh 1288 kWh £901 £129 £1,029 £17,173 16.7 yrs £3,417
6 kW 6180 kWh 4635 kWh 1545 kWh £1,081 £154 £1,235 £19,207 15.5 yrs £5,501
7 kW 7210 kWh 5408 kWh 1802 kWh £1,261 £180 £1,441 £21,242 14.7 yrs £7,584
8 kW 8240 kWh 6180 kWh 2060 kWh £1,441 £206 £1,647 £23,276 14.1 yrs £9,667

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: £1,043, Upfront: £19,623, Break-even: 18.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2060 kWh 1586 kWh 474 kWh £370 £47 £417 £13,519 32.4 yrs £-5,173
3 kW 3090 kWh 2379 kWh 711 kWh £555 £71 £626 £15,554 24.8 yrs £-3,035
4 kW 4120 kWh 3172 kWh 948 kWh £740 £95 £835 £17,588 21.1 yrs £-897
5 kW 5150 kWh 3966 kWh 1184 kWh £925 £118 £1,043 £19,623 18.8 yrs £1,242
6 kW 6180 kWh 4759 kWh 1421 kWh £1,110 £142 £1,252 £21,657 17.3 yrs £3,380
7 kW 7210 kWh 5552 kWh 1658 kWh £1,295 £166 £1,460 £23,692 16.2 yrs £5,518
8 kW 8240 kWh 6345 kWh 1895 kWh £1,480 £190 £1,669 £25,726 15.4 yrs £7,656

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 IP20

Figures below are tailored to IP20 — click through for full league tables.

Big-Roof Britain Rank #604 of 2182
5.5 kWp (UK avg 5.1 kWp)
~12 panels (≈430 W)
Solar Payback Index Rank #344 of 2997
11.5 years (UK avg 12.6 years)
~£1,060 /yr • £12,207 upfront
Standing-Charge Drag Rank #241 of 2997
17.0% (UK avg 24.6%) drag on savings
£180 fixed • ~£1,060 /yr value
Aspect Penalty View ranking →
East −22.3% West −20.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in IP20

Monthly generation per kilowatt of solar panels

kWh 40 Jan 53 Feb 87 Mar 119 Apr 125 May 125 Jun 123 Jul 113 Aug 97 Sep 68 Oct 47 Nov 34 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 49.2% of an average month (Dec–Feb)

Best / worst month: May / Dec

These figures show output per kilowatt (kW) of panels installed. In winter, a 1 kW system here produces about 42 kWh per month; the average month produces around 86 kWh. So a typical 4 kW home system would generate roughly 169 kWh in winter, or 343 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
23.32p/kWh
Daily Fixed Charge
54.18p/day
Local Sunshine
1030kWh/kW
A 1 kW system generates ~1030 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: 58% • Flats: 10% • Bungalows: 31% Based on 2,334 properties

Coverage

South Norfolk (81%)|Mid Suffolk (12%)|East Suffolk (7%)

Areas Covered

Harleston, Fressingfield, Ditchingham & Earsham, Beck Vale, Dickleburgh & Scole, Bungay & Wainford

Data Sources & Assumptions

Solar yield: PVGIS (EU Joint Research Centre), January 2025 data

Electricity rates: Ofgem price cap, Q1 2026

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

IP21 (Mid Suffolk)
≈6.3 km away
Local sunshine: ~1,020 kWh/kWp · -1% vs IP20
NR35 (East Suffolk)
≈11.0 km away
Local sunshine: ~1,032 kWh/kWp · +0% vs IP20
NR15 (South Norfolk)
≈11.5 km away
Local sunshine: ~1,029 kWh/kWp · -0% vs IP20
IP98 (South Norfolk)
≈13.4 km away
Local sunshine: ~1,020 kWh/kWp · -1% vs IP20
IP22 (South Norfolk)
≈13.8 km away
Local sunshine: ~1,017 kWh/kWp · -1% vs IP20
IP19 (East Suffolk)
≈15.1 km away
Local sunshine: ~1,042 kWh/kWp · +1% vs IP20

Similar sunshine across the UK

BH31 (Dorset)
~1,030 kWh/kWp · -0% vs IP20
ME20 (Tonbridge and Malling)
~1,030 kWh/kWp · +0% vs IP20
TR7 (Cornwall)
~1,030 kWh/kWp · -0% vs IP20