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Solar panel cost in East Devon (EX5)

See realistic solar installation costs, savings and payback for EX5 (East Devon) 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
£8,139
What you pay to get started
Annual Benefit
£851
What you save every year
Profit Over 25 Years
£13,145
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 1028 kWh/kW — 15 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 1028 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)
1028 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: £851, 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 2057 kWh 823 kWh 1234 kWh £217 £123 £341 £3,256 9.6 yrs £3,555
3 kW 3085 kWh 1234 kWh 1851 kWh £326 £185 £511 £4,883 9.6 yrs £5,333
4 kW 4114 kWh 1646 kWh 2468 kWh £434 £247 £681 £6,511 9.6 yrs £7,111
5 kW 5142 kWh 2057 kWh 3085 kWh £543 £309 £851 £8,139 9.6 yrs £8,888
6 kW 6171 kWh 2468 kWh 3702 kWh £651 £370 £1,022 £9,767 9.6 yrs £10,666
7 kW 7199 kWh 2880 kWh 4320 kWh £760 £432 £1,192 £11,394 9.6 yrs £12,444
8 kW 8228 kWh 3291 kWh 4937 kWh £869 £494 £1,362 £13,022 9.6 yrs £14,221

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: £1,020, Upfront: £10,239, Break-even: 10.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2057 kWh 1234 kWh 823 kWh £326 £82 £408 £5,356 13.1 yrs £2,804
3 kW 3085 kWh 1851 kWh 1234 kWh £489 £123 £612 £6,983 11.4 yrs £5,256
4 kW 4114 kWh 2468 kWh 1646 kWh £651 £165 £816 £8,611 10.6 yrs £7,708
5 kW 5142 kWh 3085 kWh 2057 kWh £814 £206 £1,020 £10,239 10.0 yrs £10,160
6 kW 6171 kWh 3702 kWh 2468 kWh £977 £247 £1,224 £11,867 9.7 yrs £12,612
7 kW 7199 kWh 4320 kWh 2880 kWh £1,140 £288 £1,428 £13,494 9.5 yrs £15,064
8 kW 8228 kWh 4937 kWh 3291 kWh £1,303 £329 £1,632 £15,122 9.3 yrs £17,515

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: £1,104, Upfront: £11,639, Break-even: 10.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2057 kWh 1440 kWh 617 kWh £380 £62 £442 £6,756 15.3 yrs £2,078
3 kW 3085 kWh 2160 kWh 926 kWh £570 £93 £663 £8,383 12.7 yrs £4,867
4 kW 4114 kWh 2880 kWh 1234 kWh £760 £123 £883 £10,011 11.3 yrs £7,656
5 kW 5142 kWh 3600 kWh 1543 kWh £950 £154 £1,104 £11,639 10.5 yrs £10,445
6 kW 6171 kWh 4320 kWh 1851 kWh £1,140 £185 £1,325 £13,267 10.0 yrs £13,234
7 kW 7199 kWh 5039 kWh 2160 kWh £1,330 £216 £1,546 £14,894 9.6 yrs £16,023
8 kW 8228 kWh 5759 kWh 2468 kWh £1,520 £247 £1,767 £16,522 9.4 yrs £18,813

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: £1,129, Upfront: £13,389, Break-even: 11.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2057 kWh 1502 kWh 555 kWh £396 £56 £452 £8,506 18.8 yrs £530
3 kW 3085 kWh 2252 kWh 833 kWh £594 £83 £678 £10,133 15.0 yrs £3,421
4 kW 4114 kWh 3003 kWh 1111 kWh £793 £111 £904 £11,761 13.0 yrs £6,311
5 kW 5142 kWh 3754 kWh 1388 kWh £991 £139 £1,129 £13,389 11.9 yrs £9,201
6 kW 6171 kWh 4505 kWh 1666 kWh £1,189 £167 £1,355 £15,017 11.1 yrs £12,091
7 kW 7199 kWh 5255 kWh 1944 kWh £1,387 £194 £1,581 £16,644 10.5 yrs £14,981
8 kW 8228 kWh 6006 kWh 2221 kWh £1,585 £222 £1,807 £18,272 10.1 yrs £17,872

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: £1,146, Upfront: £15,139, 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 2057 kWh 1543 kWh 514 kWh £407 £51 £459 £10,256 22.4 yrs £-1,085
3 kW 3085 kWh 2314 kWh 771 kWh £611 £77 £688 £11,883 17.3 yrs £1,873
4 kW 4114 kWh 3085 kWh 1028 kWh £814 £103 £917 £13,511 14.7 yrs £4,831
5 kW 5142 kWh 3857 kWh 1286 kWh £1,018 £129 £1,146 £15,139 13.2 yrs £7,788
6 kW 6171 kWh 4628 kWh 1543 kWh £1,221 £154 £1,376 £16,767 12.2 yrs £10,746
7 kW 7199 kWh 5399 kWh 1800 kWh £1,425 £180 £1,605 £18,394 11.5 yrs £13,703
8 kW 8228 kWh 6171 kWh 2057 kWh £1,628 £206 £1,834 £20,022 10.9 yrs £16,661

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: £1,163, Upfront: £17,589, Break-even: 15.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 2057 kWh 1584 kWh 473 kWh £418 £47 £465 £12,706 27.3 yrs £-3,400
3 kW 3085 kWh 2376 kWh 710 kWh £627 £71 £698 £14,333 20.5 yrs £-375
4 kW 4114 kWh 3168 kWh 946 kWh £836 £95 £931 £15,961 17.2 yrs £2,650
5 kW 5142 kWh 3960 kWh 1183 kWh £1,045 £118 £1,163 £17,589 15.1 yrs £5,675
6 kW 6171 kWh 4751 kWh 1419 kWh £1,254 £142 £1,396 £19,217 13.8 yrs £8,700
7 kW 7199 kWh 5543 kWh 1656 kWh £1,463 £166 £1,628 £20,844 12.8 yrs £11,725
8 kW 8228 kWh 6335 kWh 1892 kWh £1,672 £189 £1,861 £22,472 12.1 yrs £14,750

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 East Devon

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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Check what MCS certification means

Understand DNO, G98 and G99 export limits

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Insights for EX5

Figures below are tailored to EX5 — click through for full league tables.

Big-Roof Britain Rank #864 of 2182
5.2 kWp (UK avg 5.1 kWp)
~11 panels (≈430 W)
Solar Payback Index Rank #358 of 2996
9.6 years (UK avg 10.8 years)
~£851 /yr • £8,139 upfront
Standing-Charge Drag Rank #1378 of 2996
24.8% (UK avg 26.6%) drag on savings
£211 fixed • ~£851 /yr value
Aspect Penalty View ranking →
East −20.2% West −20.2%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in EX5

Monthly generation per kilowatt of solar panels

kWh 41 Jan 57 Feb 90 Mar 118 Apr 125 May 122 Jun 122 Jul 111 Aug 95 Sep 67 Oct 48 Nov 35 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 51.4% 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 44 kWh per month; the average month produces around 86 kWh. So a typical 4 kW home system would generate roughly 176 kWh in winter, or 343 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
26.39p/kWh
Daily Fixed Charge
57.89p/day
Local Sunshine
1028kWh/kW
A 1 kW system generates ~1028 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: 80% • Flats: 7% • Bungalows: 12% Based on 7,792 properties

Coverage

East Devon (77%)|Mid Devon (20%)|Exeter (3%)

Areas Covered

Broadclyst, Cranbrook, Whimple & Rockbeare, Woodbury & Lympstone, Exe Valley, Clyst Valley, Cadbury, Silverton + 4 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 Southern Western

EX1 (Exeter)
≈7.7 km away
Local sunshine: ~1,020 kWh/kWp · -1% vs EX5
EX4 (Exeter)
≈7.9 km away
Local sunshine: ~1,015 kWh/kWp · -1% vs EX5
EX3 (Exeter)
≈8.0 km away
Local sunshine: ~1,031 kWh/kWp · +0% vs EX5
EX2 (Exeter)
≈8.4 km away
Local sunshine: ~1,038 kWh/kWp · +1% vs EX5
EX11 (East Devon)
≈10.0 km away
Local sunshine: ~1,013 kWh/kWp · -2% vs EX5
EX15 (Mid Devon)
≈12.8 km away
Local sunshine: ~985 kWh/kWp · -4% vs EX5

Similar sunshine across the UK

NR30 (Great Yarmouth)
~1,028 kWh/kWp · +0% vs EX5
SP2 (Wiltshire)
~1,028 kWh/kWp · -0% vs EX5
IP14 (Mid Suffolk)
~1,029 kWh/kWp · +0% vs EX5