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Solar panel cost in Somerset (TA14)

See realistic solar installation costs, savings and payback for TA14 (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
9.7 years
After this, it's pure profit
Upfront Cost
£8,139
What you pay to get started
Annual Benefit
£843
What you save every year
Profit Over 25 Years
£12,934
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 1018 kWh/kW — 5 above the regional median (1013).

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 1018 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)
1018 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: £843, Upfront: £8,139, Break-even: 9.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2037 kWh 815 kWh 1222 kWh £215 £122 £337 £3,256 9.7 yrs £3,488
3 kW 3055 kWh 1222 kWh 1833 kWh £322 £183 £506 £4,883 9.7 yrs £5,232
4 kW 4073 kWh 1629 kWh 2444 kWh £430 £244 £674 £6,511 9.7 yrs £6,976
5 kW 5091 kWh 2037 kWh 3055 kWh £537 £305 £843 £8,139 9.7 yrs £8,720
6 kW 6110 kWh 2444 kWh 3666 kWh £645 £367 £1,012 £9,767 9.7 yrs £10,464
7 kW 7128 kWh 2851 kWh 4277 kWh £752 £428 £1,180 £11,394 9.7 yrs £12,208
8 kW 8146 kWh 3258 kWh 4888 kWh £860 £489 £1,349 £13,022 9.7 yrs £13,951

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: £1,010, 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 2037 kWh 1222 kWh 815 kWh £322 £81 £404 £5,356 13.3 yrs £2,723
3 kW 3055 kWh 1833 kWh 1222 kWh £484 £122 £606 £6,983 11.5 yrs £5,135
4 kW 4073 kWh 2444 kWh 1629 kWh £645 £163 £808 £8,611 10.7 yrs £7,546
5 kW 5091 kWh 3055 kWh 2037 kWh £806 £204 £1,010 £10,239 10.1 yrs £9,958
6 kW 6110 kWh 3666 kWh 2444 kWh £967 £244 £1,212 £11,867 9.8 yrs £12,369
7 kW 7128 kWh 4277 kWh 2851 kWh £1,129 £285 £1,414 £13,494 9.5 yrs £14,781
8 kW 8146 kWh 4888 kWh 3258 kWh £1,290 £326 £1,616 £15,122 9.4 yrs £17,192

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: £1,093, 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 2037 kWh 1426 kWh 611 kWh £376 £61 £437 £6,756 15.4 yrs £1,991
3 kW 3055 kWh 2138 kWh 916 kWh £564 £92 £656 £8,383 12.8 yrs £4,736
4 kW 4073 kWh 2851 kWh 1222 kWh £752 £122 £875 £10,011 11.4 yrs £7,481
5 kW 5091 kWh 3564 kWh 1527 kWh £941 £153 £1,093 £11,639 10.6 yrs £10,227
6 kW 6110 kWh 4277 kWh 1833 kWh £1,129 £183 £1,312 £13,267 10.1 yrs £12,972
7 kW 7128 kWh 4990 kWh 2138 kWh £1,317 £214 £1,531 £14,894 9.7 yrs £15,717
8 kW 8146 kWh 5702 kWh 2444 kWh £1,505 £244 £1,749 £16,522 9.4 yrs £18,462

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: £1,118, 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 2037 kWh 1487 kWh 550 kWh £392 £55 £447 £8,506 19.0 yrs £441
3 kW 3055 kWh 2230 kWh 825 kWh £588 £82 £671 £10,133 15.1 yrs £3,286
4 kW 4073 kWh 2973 kWh 1100 kWh £785 £110 £895 £11,761 13.1 yrs £6,132
5 kW 5091 kWh 3717 kWh 1375 kWh £981 £137 £1,118 £13,389 12.0 yrs £8,977
6 kW 6110 kWh 4460 kWh 1650 kWh £1,177 £165 £1,342 £15,017 11.2 yrs £11,823
7 kW 7128 kWh 5203 kWh 1925 kWh £1,373 £192 £1,566 £16,644 10.6 yrs £14,668
8 kW 8146 kWh 5947 kWh 2199 kWh £1,569 £220 £1,789 £18,272 10.2 yrs £17,514

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: £1,135, 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 2037 kWh 1527 kWh 509 kWh £403 £51 £454 £10,256 22.6 yrs £-1,176
3 kW 3055 kWh 2291 kWh 764 kWh £605 £76 £681 £11,883 17.4 yrs £1,737
4 kW 4073 kWh 3055 kWh 1018 kWh £806 £102 £908 £13,511 14.9 yrs £4,649
5 kW 5091 kWh 3819 kWh 1273 kWh £1,008 £127 £1,135 £15,139 13.3 yrs £7,561
6 kW 6110 kWh 4582 kWh 1527 kWh £1,209 £153 £1,362 £16,767 12.3 yrs £10,473
7 kW 7128 kWh 5346 kWh 1782 kWh £1,411 £178 £1,589 £18,394 11.6 yrs £13,385
8 kW 8146 kWh 6110 kWh 2037 kWh £1,612 £204 £1,816 £20,022 11.0 yrs £16,298

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: £1,152, 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 2037 kWh 1568 kWh 468 kWh £414 £47 £461 £12,706 27.6 yrs £-3,492
3 kW 3055 kWh 2352 kWh 703 kWh £621 £70 £691 £14,333 20.7 yrs £-513
4 kW 4073 kWh 3136 kWh 937 kWh £828 £94 £921 £15,961 17.3 yrs £2,466
5 kW 5091 kWh 3920 kWh 1171 kWh £1,035 £117 £1,152 £17,589 15.3 yrs £5,445
6 kW 6110 kWh 4704 kWh 1405 kWh £1,241 £141 £1,382 £19,217 13.9 yrs £8,424
7 kW 7128 kWh 5488 kWh 1639 kWh £1,448 £164 £1,612 £20,844 12.9 yrs £11,403
8 kW 8146 kWh 6273 kWh 1874 kWh £1,655 £187 £1,843 £22,472 12.2 yrs £14,382

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 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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Share the first part of your postcode and a few basics. We’ll help you check whether system size, battery, export and paperwork assumptions look sensible before you commit to installer conversations.

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 TA14

Figures below are tailored to TA14 — click through for full league tables.

Big-Roof Britain Rank #643 of 2182
5.4 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #554 of 2996
9.7 years (UK avg 10.8 years)
~£843 /yr • £8,139 upfront
Standing-Charge Drag Rank #1420 of 2996
25.0% (UK avg 26.6%) drag on savings
£211 fixed • ~£843 /yr value
Aspect Penalty View ranking →
East −20.1% West −20.0%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in TA14

Monthly generation per kilowatt of solar panels

kWh 40 Jan 55 Feb 88 Mar 116 Apr 124 May 123 Jun 122 Jul 111 Aug 94 Sep 66 Oct 46 Nov 34 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 50.6% 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 43 kWh per month; the average month produces around 85 kWh. So a typical 4 kW home system would generate roughly 172 kWh in winter, or 339 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.39p/kWh
Daily Fixed Charge
57.89p/day
Local Sunshine
1018kWh/kW
A 1 kW system generates ~1018 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: 77% • Flats: 7% • Bungalows: 16% Based on 892 properties

Coverage

Somerset (100%)

Areas Covered

Martock, Coker

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

TA15 (Somerset)
≈2.4 km away
Local sunshine: ~1,018 kWh/kWp · -0% vs TA14
TA12 (Somerset)
≈2.6 km away
Local sunshine: ~1,017 kWh/kWp · -0% vs TA14
TA13 (Somerset)
≈4.1 km away
Local sunshine: ~1,020 kWh/kWp · +0% vs TA14
TA16 (Somerset)
≈5.7 km away
Local sunshine: ~1,017 kWh/kWp · -0% vs TA14
TA17 (Somerset)
≈7.2 km away
Local sunshine: ~1,019 kWh/kWp · +0% vs TA14
TA18 (Somerset)
≈8.3 km away
Local sunshine: ~1,012 kWh/kWp · -1% vs TA14

Similar sunshine across the UK

ME7 (Medway)
~1,018 kWh/kWp · +0% vs TA14
SP4 (Wiltshire)
~1,018 kWh/kWp · +0% vs TA14
ME1 (Medway)
~1,018 kWh/kWp · -0% vs TA14