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Solar panel cost in North Somerset (BS29)

See realistic solar installation costs, savings and payback for BS29 (North Somerset) 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
10.3 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£947
What you save every year
Profit Over 25 Years
£13,909
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 Southern Western, the current unit rate is 26.39p/kWh with a 57.89p/day standing charge. Your postcode’s south-facing sunshine yield is 953 kWh/kW — 60 below the regional median (1013).

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 953 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
57.9p/day
Sunshine yield (south)
953 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: £8,139, Break-even: 10.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 763 kWh 1144 kWh £201 £114 £316 £3,256 10.3 yrs £3,058
3 kW 2860 kWh 1144 kWh 1716 kWh £302 £172 £474 £4,883 10.3 yrs £4,587
4 kW 3813 kWh 1525 kWh 2288 kWh £403 £229 £631 £6,511 10.3 yrs £6,116
5 kW 4767 kWh 1907 kWh 2860 kWh £503 £286 £789 £8,139 10.3 yrs £7,645
6 kW 5720 kWh 2288 kWh 3432 kWh £604 £343 £947 £9,767 10.3 yrs £9,174
7 kW 6674 kWh 2669 kWh 4004 kWh £704 £400 £1,105 £11,394 10.3 yrs £10,703
8 kW 7627 kWh 3051 kWh 4576 kWh £805 £458 £1,263 £13,022 10.3 yrs £12,232

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: £945, Upfront: £10,239, Break-even: 10.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 1144 kWh 763 kWh £302 £76 £378 £5,356 14.2 yrs £2,208
3 kW 2860 kWh 1716 kWh 1144 kWh £453 £114 £567 £6,983 12.3 yrs £4,362
4 kW 3813 kWh 2288 kWh 1525 kWh £604 £153 £756 £8,611 11.4 yrs £6,516
5 kW 4767 kWh 2860 kWh 1907 kWh £755 £191 £945 £10,239 10.8 yrs £8,670
6 kW 5720 kWh 3432 kWh 2288 kWh £906 £229 £1,135 £11,867 10.5 yrs £10,824
7 kW 6674 kWh 4004 kWh 2669 kWh £1,057 £267 £1,324 £13,494 10.2 yrs £12,978
8 kW 7627 kWh 4576 kWh 3051 kWh £1,208 £305 £1,513 £15,122 10.0 yrs £15,133

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: £1,024, Upfront: £11,639, Break-even: 11.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 1335 kWh 572 kWh £352 £57 £409 £6,756 16.5 yrs £1,433
3 kW 2860 kWh 2002 kWh 858 kWh £528 £86 £614 £8,383 13.7 yrs £3,900
4 kW 3813 kWh 2669 kWh 1144 kWh £704 £114 £819 £10,011 12.2 yrs £6,366
5 kW 4767 kWh 3337 kWh 1430 kWh £881 £143 £1,024 £11,639 11.4 yrs £8,833
6 kW 5720 kWh 4004 kWh 1716 kWh £1,057 £172 £1,228 £13,267 10.8 yrs £11,299
7 kW 6674 kWh 4672 kWh 2002 kWh £1,233 £200 £1,433 £14,894 10.4 yrs £13,766
8 kW 7627 kWh 5339 kWh 2288 kWh £1,409 £229 £1,638 £16,522 10.1 yrs £16,233

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: £1,047, Upfront: £13,389, Break-even: 12.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 1392 kWh 515 kWh £367 £51 £419 £8,506 20.3 yrs £-129
3 kW 2860 kWh 2088 kWh 772 kWh £551 £77 £628 £10,133 16.1 yrs £2,431
4 kW 3813 kWh 2784 kWh 1030 kWh £735 £103 £838 £11,761 14.0 yrs £4,991
5 kW 4767 kWh 3480 kWh 1287 kWh £918 £129 £1,047 £13,389 12.8 yrs £7,552
6 kW 5720 kWh 4176 kWh 1544 kWh £1,102 £154 £1,256 £15,017 12.0 yrs £10,112
7 kW 6674 kWh 4872 kWh 1802 kWh £1,286 £180 £1,466 £16,644 11.4 yrs £12,672
8 kW 7627 kWh 5568 kWh 2059 kWh £1,469 £206 £1,675 £18,272 10.9 yrs £15,233

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: £1,063, Upfront: £15,139, Break-even: 14.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 1430 kWh 477 kWh £377 £48 £425 £10,256 24.1 yrs £-1,754
3 kW 2860 kWh 2145 kWh 715 kWh £566 £72 £638 £11,883 18.6 yrs £869
4 kW 3813 kWh 2860 kWh 953 kWh £755 £95 £850 £13,511 15.9 yrs £3,491
5 kW 4767 kWh 3575 kWh 1192 kWh £943 £119 £1,063 £15,139 14.2 yrs £6,114
6 kW 5720 kWh 4290 kWh 1430 kWh £1,132 £143 £1,275 £16,767 13.1 yrs £8,737
7 kW 6674 kWh 5005 kWh 1668 kWh £1,321 £167 £1,488 £18,394 12.4 yrs £11,360
8 kW 7627 kWh 5720 kWh 1907 kWh £1,510 £191 £1,700 £20,022 11.8 yrs £13,983

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: £1,078, Upfront: £17,589, Break-even: 16.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1907 kWh 1468 kWh 439 kWh £387 £44 £431 £12,706 29.5 yrs £-4,079
3 kW 2860 kWh 2202 kWh 658 kWh £581 £66 £647 £14,333 22.2 yrs £-1,394
4 kW 3813 kWh 2936 kWh 877 kWh £775 £88 £863 £15,961 18.5 yrs £1,291
5 kW 4767 kWh 3670 kWh 1096 kWh £969 £110 £1,078 £17,589 16.3 yrs £3,977
6 kW 5720 kWh 4405 kWh 1316 kWh £1,162 £132 £1,294 £19,217 14.9 yrs £6,662
7 kW 6674 kWh 5139 kWh 1535 kWh £1,356 £153 £1,510 £20,844 13.8 yrs £9,347
8 kW 7627 kWh 5873 kWh 1754 kWh £1,550 £175 £1,725 £22,472 13.0 yrs £12,033

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 North Somerset

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.

Compare solar quotes before you sign

Check what MCS certification means

Understand DNO, G98 and G99 export limits

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This is a practical sanity-check request, not an instant quote promise. The Blue Ape quote route above remains available if you already want installer introductions.

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Insights for BS29

Figures below are tailored to BS29 — click through for full league tables.

Big-Roof Britain Rank #254 of 2182
6.0 kWp (UK avg 5.1 kWp)
~13 panels (≈430 W)
Solar Payback Index Rank #1335 of 2996
10.3 years (UK avg 10.8 years)
~£947 /yr • £9,767 upfront
Standing-Charge Drag Rank #946 of 2996
22.3% (UK avg 26.6%) drag on savings
£211 fixed • ~£947 /yr value
Aspect Penalty View ranking →
East −17.1% West −18.8%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BS29

Monthly generation per kilowatt of solar panels

kWh 20 Jan 50 Feb 89 Mar 117 Apr 126 May 122 Jun 124 Jul 109 Aug 93 Sep 64 Oct 31 Nov 8 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 32.7% 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 26 kWh per month; the average month produces around 79 kWh. So a typical 4 kW home system would generate roughly 104 kWh in winter, or 318 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.39p/kWh
Daily Fixed Charge
57.89p/day
Local Sunshine
953kWh/kW
A 1 kW system generates ~953 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: 71% • Flats: 7% • Bungalows: 18% Based on 1,282 properties

Coverage

North Somerset (100%)

Areas Covered

Banwell & Winscombe, Weston-super-Mare South

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 Southern Western

BS25 (North Somerset)
≈3.3 km away
Local sunshine: ~978 kWh/kWp · +3% vs BS29
BS24 (North Somerset)
≈3.7 km away
Local sunshine: ~1,027 kWh/kWp · +8% vs BS29
BS22 (North Somerset)
≈4.9 km away
Local sunshine: ~1,029 kWh/kWp · +8% vs BS29
BS26 (Somerset)
≈5.1 km away
Local sunshine: ~1,006 kWh/kWp · +5% vs BS29
BS0 (North Somerset)
≈6.0 km away
Local sunshine: ~1,032 kWh/kWp · +8% vs BS29
BS23 (North Somerset)
≈6.8 km away
Local sunshine: ~1,032 kWh/kWp · +8% vs BS29

Similar sunshine across the UK

DN8 (Doncaster)
~953 kWh/kWp · +0% vs BS29
CH47 (Wirral)
~953 kWh/kWp · +0% vs BS29
DE23 (Derby)
~953 kWh/kWp · -0% vs BS29