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Solar panel cost in Mid Suffolk (IP21)

See realistic solar installation costs, savings and payback for IP21 (Mid Suffolk) 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
9.6 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£1,013
What you save every year
Profit Over 25 Years
£15,557
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: The official cost per kW is lower above 4 kW, so a 5–6 kW system can pay back a little faster than a 3–4 kW system on otherwise identical assumptions.
  • 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

Panel costs: Uses March 2026 TIC mean installation costs: £1,827/kW up to 4 kW and £1,628/kW above 4 kW.

Other costs: Battery prices are modelled at £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 26.38p/kWh with a 53.94p/day standing charge. Your postcode’s south-facing sunshine yield is 1020 kWh/kW — 11 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 1020 kWh per year on a south-facing roof. We value self-used electricity at 26.4p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
26.4p/kWh
Standing charge
53.9p/day
Sunshine yield (south)
1020 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: £844, Upfront: £8,139, Break-even: 9.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2040 kWh 816 kWh 1224 kWh £215 £122 £338 £3,256 9.6 yrs £3,497
3 kW 3060 kWh 1224 kWh 1836 kWh £323 £184 £506 £4,883 9.6 yrs £5,246
4 kW 4080 kWh 1632 kWh 2448 kWh £431 £245 £675 £6,511 9.6 yrs £6,995
5 kW 5100 kWh 2040 kWh 3060 kWh £538 £306 £844 £8,139 9.6 yrs £8,743
6 kW 6120 kWh 2448 kWh 3672 kWh £646 £367 £1,013 £9,767 9.6 yrs £10,492
7 kW 7140 kWh 2856 kWh 4284 kWh £753 £428 £1,182 £11,394 9.6 yrs £12,241
8 kW 8160 kWh 3264 kWh 4896 kWh £861 £490 £1,351 £13,022 9.6 yrs £13,989

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £1,011, Upfront: £10,239, Break-even: 10.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2040 kWh 1224 kWh 816 kWh £323 £82 £404 £5,356 13.2 yrs £2,734
3 kW 3060 kWh 1836 kWh 1224 kWh £484 £122 £607 £6,983 11.5 yrs £5,151
4 kW 4080 kWh 2448 kWh 1632 kWh £646 £163 £809 £8,611 10.6 yrs £7,568
5 kW 5100 kWh 3060 kWh 2040 kWh £807 £204 £1,011 £10,239 10.1 yrs £9,985
6 kW 6120 kWh 3672 kWh 2448 kWh £969 £245 £1,213 £11,867 9.8 yrs £12,402
7 kW 7140 kWh 4284 kWh 2856 kWh £1,130 £286 £1,416 £13,494 9.5 yrs £14,819
8 kW 8160 kWh 4896 kWh 3264 kWh £1,292 £326 £1,618 £15,122 9.3 yrs £17,236

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £1,095, Upfront: £11,639, Break-even: 10.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2040 kWh 1428 kWh 612 kWh £377 £61 £438 £6,756 15.4 yrs £2,002
3 kW 3060 kWh 2142 kWh 918 kWh £565 £92 £657 £8,383 12.8 yrs £4,753
4 kW 4080 kWh 2856 kWh 1224 kWh £753 £122 £876 £10,011 11.4 yrs £7,504
5 kW 5100 kWh 3570 kWh 1530 kWh £942 £153 £1,095 £11,639 10.6 yrs £10,255
6 kW 6120 kWh 4284 kWh 1836 kWh £1,130 £184 £1,314 £13,267 10.1 yrs £13,007
7 kW 7140 kWh 4998 kWh 2142 kWh £1,318 £214 £1,533 £14,894 9.7 yrs £15,758
8 kW 8160 kWh 5712 kWh 2448 kWh £1,507 £245 £1,752 £16,522 9.4 yrs £18,509

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £1,120, Upfront: £13,389, Break-even: 12.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2040 kWh 1489 kWh 551 kWh £393 £55 £448 £8,506 19.0 yrs £453
3 kW 3060 kWh 2234 kWh 826 kWh £589 £83 £672 £10,133 15.1 yrs £3,304
4 kW 4080 kWh 2978 kWh 1102 kWh £786 £110 £896 £11,761 13.1 yrs £6,155
5 kW 5100 kWh 3723 kWh 1377 kWh £982 £138 £1,120 £13,389 12.0 yrs £9,007
6 kW 6120 kWh 4467 kWh 1652 kWh £1,178 £165 £1,344 £15,017 11.2 yrs £11,858
7 kW 7140 kWh 5212 kWh 1928 kWh £1,375 £193 £1,568 £16,644 10.6 yrs £14,709
8 kW 8160 kWh 5957 kWh 2203 kWh £1,571 £220 £1,792 £18,272 10.2 yrs £17,561

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £1,136, Upfront: £15,139, 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 2040 kWh 1530 kWh 510 kWh £404 £51 £455 £10,256 22.6 yrs £-1,164
3 kW 3060 kWh 2295 kWh 765 kWh £605 £76 £682 £11,883 17.4 yrs £1,754
4 kW 4080 kWh 3060 kWh 1020 kWh £807 £102 £909 £13,511 14.9 yrs £4,673
5 kW 5100 kWh 3825 kWh 1275 kWh £1,009 £127 £1,136 £15,139 13.3 yrs £7,591
6 kW 6120 kWh 4590 kWh 1530 kWh £1,211 £153 £1,364 £16,767 12.3 yrs £10,509
7 kW 7140 kWh 5355 kWh 1785 kWh £1,413 £178 £1,591 £18,394 11.6 yrs £13,427
8 kW 8160 kWh 6120 kWh 2040 kWh £1,614 £204 £1,818 £20,022 11.0 yrs £16,345

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £1,153, Upfront: £17,589, 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 2040 kWh 1571 kWh 469 kWh £414 £47 £461 £12,706 27.5 yrs £-3,480
3 kW 3060 kWh 2356 kWh 704 kWh £622 £70 £692 £14,333 20.7 yrs £-495
4 kW 4080 kWh 3141 kWh 938 kWh £829 £94 £923 £15,961 17.3 yrs £2,490
5 kW 5100 kWh 3927 kWh 1173 kWh £1,036 £117 £1,153 £17,589 15.3 yrs £5,475
6 kW 6120 kWh 4712 kWh 1408 kWh £1,243 £141 £1,384 £19,217 13.9 yrs £8,460
7 kW 7140 kWh 5498 kWh 1642 kWh £1,450 £164 £1,614 £20,844 12.9 yrs £11,445
8 kW 8160 kWh 6283 kWh 1877 kWh £1,657 £188 £1,845 £22,472 12.2 yrs £14,430

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 1,628, 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.

Before you request quotes in Mid Suffolk

Use the numbers above to sanity-check installer quotes. The main things to compare are system size, battery assumptions, payback claims, MCS certification, DNO paperwork and export assumptions.

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Understand DNO, G98 and G99 export limits

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Insights for IP21

Figures below are tailored to IP21 — click through for full league tables.

Big-Roof Britain Rank #180 of 2182
6.2 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #363 of 2996
9.6 years (UK avg 10.8 years)
~£1,013 /yr • £9,767 upfront
Standing-Charge Drag Rank #377 of 2996
19.4% (UK avg 26.6%) drag on savings
£197 fixed • ~£1,013 /yr value
Aspect Penalty View ranking →
East −22.3% West −20.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in IP21

Monthly generation per kilowatt of solar panels

kWh 39 Jan 52 Feb 87 Mar 118 Apr 123 May 123 Jun 122 Jul 112 Aug 96 Sep 68 Oct 46 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: Jun / 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 85 kWh. So a typical 4 kW home system would generate roughly 167 kWh in winter, or 340 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.38p/kWh
Daily Fixed Charge
53.94p/day
Local Sunshine
1020kWh/kW
A 1 kW system generates ~1020 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: 66% • Flats: 3% • Bungalows: 31% Based on 2,911 properties

Coverage

Mid Suffolk (53%)|South Norfolk (47%)

Areas Covered

Beck Vale, Dickleburgh & Scole, Fressingfield, Stradbroke & Laxfield, Hoxne & Worlingworth, Diss & Roydon, Palgrave, Bressingham & Burston + 1 more

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q3 2026

Installation costs: DESNZ/MCS data, March 2026 (TIC)

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

IP20 (South Norfolk)
≈6.3 km away
Local sunshine: ~1,030 kWh/kWp · +1% vs IP21
IP98 (South Norfolk)
≈8.5 km away
Local sunshine: ~1,020 kWh/kWp · +0% vs IP21
IP22 (South Norfolk)
≈8.9 km away
Local sunshine: ~1,017 kWh/kWp · -0% vs IP21
IP23 (Mid Suffolk)
≈9.1 km away
Local sunshine: ~1,021 kWh/kWp · +0% vs IP21
NR15 (South Norfolk)
≈15.1 km away
Local sunshine: ~1,029 kWh/kWp · +1% vs IP21
NR16 (Breckland)
≈16.3 km away
Local sunshine: ~1,014 kWh/kWp · -1% vs IP21

Similar sunshine across the UK

CF31 (Bridgend)
~1,020 kWh/kWp · +0% vs IP21
GU27 (Waverley)
~1,020 kWh/kWp · -0% vs IP21
EX33 (North Devon)
~1,020 kWh/kWp · -0% vs IP21