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Solar panel cost in Causeway Coast and Glens (BT49)

See realistic solar installation costs, savings and payback for BT49 (Causeway Coast and Glens) 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
32.1 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£304
What you save every year
Profit Over 25 Years
£-2,154
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 Northern Ireland, the current unit rate is 0.00p/kWh with a 0.00p/day standing charge. Your postcode’s south-facing sunshine yield is 846 kWh/kW — 145 below the regional median (991).

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 846 kWh per year on a south-facing roof. We value self-used electricity at 0.0p and exported surplus at a baseline 10p via SEG. Use the calculator above for your exact tariff.

Unit rate
0.0p/kWh
Standing charge
0.0p/day
Sunshine yield (south)
846 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: £254, Upfront: £8,139, Break-even: 32.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 677 kWh 1015 kWh £0 £101 £101 £3,256 32.1 yrs £-1,226
3 kW 2537 kWh 1015 kWh 1522 kWh £0 £152 £152 £4,883 32.1 yrs £-1,838
4 kW 3383 kWh 1353 kWh 2030 kWh £0 £203 £203 £6,511 32.1 yrs £-2,451
5 kW 4229 kWh 1692 kWh 2537 kWh £0 £254 £254 £8,139 32.1 yrs £-3,064
6 kW 5075 kWh 2030 kWh 3045 kWh £0 £304 £304 £9,767 32.1 yrs £-3,677
7 kW 5921 kWh 2368 kWh 3552 kWh £0 £355 £355 £11,394 32.1 yrs £-4,290
8 kW 6766 kWh 2707 kWh 4060 kWh £0 £406 £406 £13,022 32.1 yrs £-4,902

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: £169, Upfront: £10,239, Break-even: 60.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 1015 kWh 677 kWh £0 £68 £68 £5,356 79.1 yrs £-4,002
3 kW 2537 kWh 1522 kWh 1015 kWh £0 £101 £101 £6,983 68.8 yrs £-4,953
4 kW 3383 kWh 2030 kWh 1353 kWh £0 £135 £135 £8,611 63.6 yrs £-5,904
5 kW 4229 kWh 2537 kWh 1692 kWh £0 £169 £169 £10,239 60.5 yrs £-6,856
6 kW 5075 kWh 3045 kWh 2030 kWh £0 £203 £203 £11,867 58.5 yrs £-7,807
7 kW 5921 kWh 3552 kWh 2368 kWh £0 £237 £237 £13,494 57.0 yrs £-8,758
8 kW 6766 kWh 4060 kWh 2707 kWh £0 £271 £271 £15,122 55.9 yrs £-9,709

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: £127, Upfront: £11,639, Break-even: 91.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 1184 kWh 507 kWh £0 £51 £51 £6,756 133.1 yrs £-5,741
3 kW 2537 kWh 1776 kWh 761 kWh £0 £76 £76 £8,383 110.1 yrs £-6,861
4 kW 3383 kWh 2368 kWh 1015 kWh £0 £101 £101 £10,011 98.6 yrs £-7,981
5 kW 4229 kWh 2960 kWh 1269 kWh £0 £127 £127 £11,639 91.7 yrs £-9,101
6 kW 5075 kWh 3552 kWh 1522 kWh £0 £152 £152 £13,267 87.1 yrs £-10,222
7 kW 5921 kWh 4144 kWh 1776 kWh £0 £178 £178 £14,894 83.9 yrs £-11,342
8 kW 6766 kWh 4737 kWh 2030 kWh £0 £203 £203 £16,522 81.4 yrs £-12,462

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: £114, Upfront: £13,389, Break-even: 117.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 1235 kWh 457 kWh £0 £46 £46 £8,506 186.2 yrs £-7,592
3 kW 2537 kWh 1852 kWh 685 kWh £0 £69 £69 £10,133 147.9 yrs £-8,763
4 kW 3383 kWh 2470 kWh 913 kWh £0 £91 £91 £11,761 128.8 yrs £-9,934
5 kW 4229 kWh 3087 kWh 1142 kWh £0 £114 £114 £13,389 117.3 yrs £-11,105
6 kW 5075 kWh 3705 kWh 1370 kWh £0 £137 £137 £15,017 109.6 yrs £-12,276
7 kW 5921 kWh 4322 kWh 1599 kWh £0 £160 £160 £16,644 104.1 yrs £-13,447
8 kW 6766 kWh 4940 kWh 1827 kWh £0 £183 £183 £18,272 100.0 yrs £-14,618

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: £106, Upfront: £15,139, Break-even: 143.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 1269 kWh 423 kWh £0 £42 £42 £10,256 242.5 yrs £-9,410
3 kW 2537 kWh 1903 kWh 634 kWh £0 £63 £63 £11,883 187.3 yrs £-10,615
4 kW 3383 kWh 2537 kWh 846 kWh £0 £85 £85 £13,511 159.7 yrs £-11,819
5 kW 4229 kWh 3172 kWh 1057 kWh £0 £106 £106 £15,139 143.2 yrs £-13,024
6 kW 5075 kWh 3806 kWh 1269 kWh £0 £127 £127 £16,767 132.2 yrs £-14,229
7 kW 5921 kWh 4441 kWh 1480 kWh £0 £148 £148 £18,394 124.3 yrs £-15,434
8 kW 6766 kWh 5075 kWh 1692 kWh £0 £169 £169 £20,022 118.4 yrs £-16,639

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: £97, Upfront: £17,589, Break-even: 180.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1692 kWh 1303 kWh 389 kWh £0 £39 £39 £12,706 326.6 yrs £-11,927
3 kW 2537 kWh 1954 kWh 584 kWh £0 £58 £58 £14,333 245.6 yrs £-13,166
4 kW 3383 kWh 2605 kWh 778 kWh £0 £78 £78 £15,961 205.1 yrs £-14,405
5 kW 4229 kWh 3256 kWh 973 kWh £0 £97 £97 £17,589 180.8 yrs £-15,643
6 kW 5075 kWh 3908 kWh 1167 kWh £0 £117 £117 £19,217 164.6 yrs £-16,882
7 kW 5921 kWh 4559 kWh 1362 kWh £0 £136 £136 £20,844 153.1 yrs £-18,121
8 kW 6766 kWh 5210 kWh 1556 kWh £0 £156 £156 £22,472 144.4 yrs £-19,359

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 Causeway Coast and Glens

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 BT49

Figures below are tailored to BT49 — click through for full league tables.

Aspect Penalty View ranking →
East −20.3% West −19.4%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT49

Monthly generation per kilowatt of solar panels

kWh 25 Jan 44 Feb 74 Mar 104 Apr 117 May 107 Jun 102 Jul 94 Aug 74 Sep 54 Oct 32 Nov 19 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 41.4% 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 29 kWh per month; the average month produces around 70 kWh. So a typical 4 kW home system would generate roughly 117 kWh in winter, or 282 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
846kWh/kW
A 1 kW system generates ~846 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

No EPC data available for this outcode

Coverage

Causeway Coast and Glens (100%)

Areas Covered

Roeside, Magilligan, Drumsurn, Ballykelly, Coolessan, Greystone, Greysteel, Altahullion + 1 more

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap,

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 Northern Ireland

BT51 (Causeway Coast and Glens)
≈17.6 km away
Local sunshine: ~860 kWh/kWp · +2% vs BT49
BT52 (Causeway Coast and Glens)
≈20.6 km away
Local sunshine: ~861 kWh/kWp · +2% vs BT49
BT55 (Causeway Coast and Glens)
≈21.2 km away
Local sunshine: ~854 kWh/kWp · +1% vs BT49
BT47 (Derry City and Strabane)
≈22.2 km away
Local sunshine: ~806 kWh/kWp · -5% vs BT49
BT48 (Derry City and Strabane)
≈24.6 km away
Local sunshine: ~827 kWh/kWp · -2% vs BT49
BT56 (Causeway Coast and Glens)
≈25.2 km away
Local sunshine: ~849 kWh/kWp · +0% vs BT49

Similar sunshine across the UK

PA81 (Na h-Eileanan Siar)
~846 kWh/kWp · +0% vs BT49
LL38 (Gwynedd)
~846 kWh/kWp · -0% vs BT49
BB8 (Pendle)
~846 kWh/kWp · -0% vs BT49