Independent solar numbers for your postcode using official UK data
Home Regions Guides Compare quotes Solar assistant
Insights
Big Roof Britain Solar Payback Index Standing Charge Drag Roof Direction Penalty Winter Solar Reality Seasonal Solar Output

Solar panel cost in Causeway Coast and Glens (BT56)

See realistic solar installation costs, savings and payback for BT56 (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
32.0 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£306
What you save every year
Profit Over 25 Years
£-2,126
After paying itself off, you're this much ahead

Ready to Get Started?

Get your free quote from Blue Ape Renewables. They'll connect you with MCS-certified installers in your area and handle all the paperwork.

Get Solar Quote →
4.8★ Trustpilot • Octopus Energy trusted partner • MCS certified • No obligation
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 849 kWh/kW — 142 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 849 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)
849 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: £255, Upfront: £8,139, Break-even: 32.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 679 kWh 1019 kWh £0 £102 £102 £3,256 32.0 yrs £-1,218
3 kW 2547 kWh 1019 kWh 1528 kWh £0 £153 £153 £4,883 32.0 yrs £-1,827
4 kW 3396 kWh 1358 kWh 2038 kWh £0 £204 £204 £6,511 32.0 yrs £-2,436
5 kW 4245 kWh 1698 kWh 2547 kWh £0 £255 £255 £8,139 32.0 yrs £-3,045
6 kW 5094 kWh 2038 kWh 3056 kWh £0 £306 £306 £9,767 32.0 yrs £-3,654
7 kW 5943 kWh 2377 kWh 3566 kWh £0 £357 £357 £11,394 32.0 yrs £-4,263
8 kW 6792 kWh 2717 kWh 4075 kWh £0 £408 £408 £13,022 32.0 yrs £-4,872

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: £170, Upfront: £10,239, Break-even: 60.3 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 1019 kWh 679 kWh £0 £68 £68 £5,356 78.9 yrs £-3,997
3 kW 2547 kWh 1528 kWh 1019 kWh £0 £102 £102 £6,983 68.5 yrs £-4,946
4 kW 3396 kWh 2038 kWh 1358 kWh £0 £136 £136 £8,611 63.4 yrs £-5,894
5 kW 4245 kWh 2547 kWh 1698 kWh £0 £170 £170 £10,239 60.3 yrs £-6,843
6 kW 5094 kWh 3056 kWh 2038 kWh £0 £204 £204 £11,867 58.2 yrs £-7,792
7 kW 5943 kWh 3566 kWh 2377 kWh £0 £238 £238 £13,494 56.8 yrs £-8,740
8 kW 6792 kWh 4075 kWh 2717 kWh £0 £272 £272 £15,122 55.7 yrs £-9,689

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: 91.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 1189 kWh 509 kWh £0 £51 £51 £6,756 132.6 yrs £-5,737
3 kW 2547 kWh 1783 kWh 764 kWh £0 £76 £76 £8,383 109.7 yrs £-6,855
4 kW 3396 kWh 2377 kWh 1019 kWh £0 £102 £102 £10,011 98.3 yrs £-7,974
5 kW 4245 kWh 2971 kWh 1273 kWh £0 £127 £127 £11,639 91.4 yrs £-9,092
6 kW 5094 kWh 3566 kWh 1528 kWh £0 £153 £153 £13,267 86.8 yrs £-10,210
7 kW 5943 kWh 4160 kWh 1783 kWh £0 £178 £178 £14,894 83.5 yrs £-11,329
8 kW 6792 kWh 4754 kWh 2038 kWh £0 £204 £204 £16,522 81.1 yrs £-12,447

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: £115, Upfront: £13,389, Break-even: 116.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 1239 kWh 458 kWh £0 £46 £46 £8,506 185.5 yrs £-7,589
3 kW 2547 kWh 1859 kWh 688 kWh £0 £69 £69 £10,133 147.4 yrs £-8,758
4 kW 3396 kWh 2479 kWh 917 kWh £0 £92 £92 £11,761 128.3 yrs £-9,927
5 kW 4245 kWh 3099 kWh 1146 kWh £0 £115 £115 £13,389 116.8 yrs £-11,097
6 kW 5094 kWh 3718 kWh 1375 kWh £0 £138 £138 £15,017 109.2 yrs £-12,266
7 kW 5943 kWh 4338 kWh 1605 kWh £0 £160 £160 £16,644 103.7 yrs £-13,435
8 kW 6792 kWh 4958 kWh 1834 kWh £0 £183 £183 £18,272 99.6 yrs £-14,605

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: 142.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 1273 kWh 424 kWh £0 £42 £42 £10,256 241.6 yrs £-9,407
3 kW 2547 kWh 1910 kWh 637 kWh £0 £64 £64 £11,883 186.6 yrs £-10,610
4 kW 3396 kWh 2547 kWh 849 kWh £0 £85 £85 £13,511 159.1 yrs £-11,813
5 kW 4245 kWh 3184 kWh 1061 kWh £0 £106 £106 £15,139 142.7 yrs £-13,016
6 kW 5094 kWh 3820 kWh 1273 kWh £0 £127 £127 £16,767 131.7 yrs £-14,220
7 kW 5943 kWh 4457 kWh 1486 kWh £0 £149 £149 £18,394 123.8 yrs £-15,423
8 kW 6792 kWh 5094 kWh 1698 kWh £0 £170 £170 £20,022 117.9 yrs £-16,626

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: £98, Upfront: £17,589, Break-even: 180.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1698 kWh 1307 kWh 391 kWh £0 £39 £39 £12,706 325.3 yrs £-11,924
3 kW 2547 kWh 1961 kWh 586 kWh £0 £59 £59 £14,333 244.7 yrs £-13,162
4 kW 3396 kWh 2615 kWh 781 kWh £0 £78 £78 £15,961 204.4 yrs £-14,399
5 kW 4245 kWh 3268 kWh 976 kWh £0 £98 £98 £17,589 180.2 yrs £-15,636
6 kW 5094 kWh 3922 kWh 1172 kWh £0 £117 £117 £19,217 164.0 yrs £-16,873
7 kW 5943 kWh 4576 kWh 1367 kWh £0 £137 £137 £20,844 152.5 yrs £-18,111
8 kW 6792 kWh 5230 kWh 1562 kWh £0 £156 £156 £22,472 143.9 yrs £-19,348

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.

Compare solar quotes before you sign

Check what MCS certification means

Understand DNO, G98 and G99 export limits

New quote check

Want a quote sanity check for BT56?

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.

Request a quote sanity check →

Insights for BT56

Figures below are tailored to BT56 — click through for full league tables.

Aspect Penalty View ranking →
East −20.0% West −20.7%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT56

Monthly generation per kilowatt of solar panels

kWh 24 Jan 42 Feb 76 Mar 106 Apr 120 May 111 Jun 105 Jul 93 Aug 72 Sep 51 Oct 30 Nov 18 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 39.7% 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 28 kWh per month; the average month produces around 71 kWh. So a typical 4 kW home system would generate roughly 112 kWh in winter, or 283 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
849kWh/kW
A 1 kW system generates ~849 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

Portrush and Dunluce, Hopefield, Atlantic, Dundooan

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

BT55 (Causeway Coast and Glens)
≈4.1 km away
Local sunshine: ~854 kWh/kWp · +1% vs BT56
BT52 (Causeway Coast and Glens)
≈7.2 km away
Local sunshine: ~861 kWh/kWp · +1% vs BT56
BT57 (Causeway Coast and Glens)
≈8.1 km away
Local sunshine: ~866 kWh/kWp · +2% vs BT56
BT51 (Causeway Coast and Glens)
≈11.6 km away
Local sunshine: ~860 kWh/kWp · +1% vs BT56
BT53 (Causeway Coast and Glens)
≈16.6 km away
Local sunshine: ~842 kWh/kWp · -1% vs BT56
BT54 (Causeway Coast and Glens)
≈25.1 km away
Local sunshine: ~860 kWh/kWp · +1% vs BT56

Similar sunshine across the UK

G72 (South Lanarkshire)
~849 kWh/kWp · -0% vs BT56
BD24 (North Yorkshire)
~849 kWh/kWp · -0% vs BT56
ML3 (South Lanarkshire)
~849 kWh/kWp · -0% vs BT56