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Solar panel cost in Belfast (BT14)

See realistic solar installation costs, savings and payback for BT14 (Belfast) 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
30.6 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£319
What you save every year
Profit Over 25 Years
£-1,793
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 886 kWh/kW — 105 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 886 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)
886 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: £266, Upfront: £8,139, Break-even: 30.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 709 kWh 1063 kWh £0 £106 £106 £3,256 30.6 yrs £-1,129
3 kW 2658 kWh 1063 kWh 1595 kWh £0 £159 £159 £4,883 30.6 yrs £-1,694
4 kW 3544 kWh 1418 kWh 2126 kWh £0 £213 £213 £6,511 30.6 yrs £-2,259
5 kW 4430 kWh 1772 kWh 2658 kWh £0 £266 £266 £8,139 30.6 yrs £-2,823
6 kW 5316 kWh 2126 kWh 3189 kWh £0 £319 £319 £9,767 30.6 yrs £-3,388
7 kW 6202 kWh 2481 kWh 3721 kWh £0 £372 £372 £11,394 30.6 yrs £-3,952
8 kW 7088 kWh 2835 kWh 4253 kWh £0 £425 £425 £13,022 30.6 yrs £-4,517

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: £177, Upfront: £10,239, Break-even: 57.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1063 kWh 709 kWh £0 £71 £71 £5,356 75.6 yrs £-3,938
3 kW 2658 kWh 1595 kWh 1063 kWh £0 £106 £106 £6,983 65.7 yrs £-4,857
4 kW 3544 kWh 2126 kWh 1418 kWh £0 £142 £142 £8,611 60.7 yrs £-5,776
5 kW 4430 kWh 2658 kWh 1772 kWh £0 £177 £177 £10,239 57.8 yrs £-6,695
6 kW 5316 kWh 3189 kWh 2126 kWh £0 £213 £213 £11,867 55.8 yrs £-7,614
7 kW 6202 kWh 3721 kWh 2481 kWh £0 £248 £248 £13,494 54.4 yrs £-8,533
8 kW 7088 kWh 4253 kWh 2835 kWh £0 £284 £284 £15,122 53.3 yrs £-9,452

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: £133, Upfront: £11,639, Break-even: 87.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1240 kWh 532 kWh £0 £53 £53 £6,756 127.1 yrs £-5,692
3 kW 2658 kWh 1860 kWh 797 kWh £0 £80 £80 £8,383 105.1 yrs £-6,789
4 kW 3544 kWh 2481 kWh 1063 kWh £0 £106 £106 £10,011 94.2 yrs £-7,885
5 kW 4430 kWh 3101 kWh 1329 kWh £0 £133 £133 £11,639 87.6 yrs £-8,981
6 kW 5316 kWh 3721 kWh 1595 kWh £0 £159 £159 £13,267 83.2 yrs £-10,077
7 kW 6202 kWh 4341 kWh 1860 kWh £0 £186 £186 £14,894 80.1 yrs £-11,173
8 kW 7088 kWh 4961 kWh 2126 kWh £0 £213 £213 £16,522 77.7 yrs £-12,270

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: £120, Upfront: £13,389, Break-even: 111.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1293 kWh 478 kWh £0 £48 £48 £8,506 177.8 yrs £-7,549
3 kW 2658 kWh 1940 kWh 718 kWh £0 £72 £72 £10,133 141.2 yrs £-8,698
4 kW 3544 kWh 2587 kWh 957 kWh £0 £96 £96 £11,761 122.9 yrs £-9,847
5 kW 4430 kWh 3234 kWh 1196 kWh £0 £120 £120 £13,389 111.9 yrs £-10,997
6 kW 5316 kWh 3880 kWh 1435 kWh £0 £144 £144 £15,017 104.6 yrs £-12,146
7 kW 6202 kWh 4527 kWh 1674 kWh £0 £167 £167 £16,644 99.4 yrs £-13,295
8 kW 7088 kWh 5174 kWh 1914 kWh £0 £191 £191 £18,272 95.5 yrs £-14,445

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: £111, Upfront: £15,139, Break-even: 136.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1329 kWh 443 kWh £0 £44 £44 £10,256 231.5 yrs £-9,370
3 kW 2658 kWh 1993 kWh 664 kWh £0 £66 £66 £11,883 178.8 yrs £-10,554
4 kW 3544 kWh 2658 kWh 886 kWh £0 £89 £89 £13,511 152.5 yrs £-11,739
5 kW 4430 kWh 3322 kWh 1107 kWh £0 £111 £111 £15,139 136.7 yrs £-12,924
6 kW 5316 kWh 3987 kWh 1329 kWh £0 £133 £133 £16,767 126.2 yrs £-14,109
7 kW 6202 kWh 4651 kWh 1550 kWh £0 £155 £155 £18,394 118.6 yrs £-15,294
8 kW 7088 kWh 5316 kWh 1772 kWh £0 £177 £177 £20,022 113.0 yrs £-16,478

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: £102, Upfront: £17,589, Break-even: 172.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1772 kWh 1364 kWh 408 kWh £0 £41 £41 £12,706 311.8 yrs £-11,890
3 kW 2658 kWh 2047 kWh 611 kWh £0 £61 £61 £14,333 234.5 yrs £-13,111
4 kW 3544 kWh 2729 kWh 815 kWh £0 £82 £82 £15,961 195.8 yrs £-14,331
5 kW 4430 kWh 3411 kWh 1019 kWh £0 £102 £102 £17,589 172.6 yrs £-15,551
6 kW 5316 kWh 4093 kWh 1223 kWh £0 £122 £122 £19,217 157.2 yrs £-16,771
7 kW 6202 kWh 4775 kWh 1426 kWh £0 £143 £143 £20,844 146.1 yrs £-17,992
8 kW 7088 kWh 5457 kWh 1630 kWh £0 £163 £163 £22,472 137.9 yrs £-19,212

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 Belfast

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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Want a quote sanity check for BT14?

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 BT14

Figures below are tailored to BT14 — click through for full league tables.

Aspect Penalty View ranking →
East −20.9% West −20.4%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT14

Monthly generation per kilowatt of solar panels

kWh 29 Jan 46 Feb 78 Mar 105 Apr 118 May 112 Jun 107 Jul 96 Aug 78 Sep 56 Oct 36 Nov 25 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 45.2% 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 33 kWh per month; the average month produces around 74 kWh. So a typical 4 kW home system would generate roughly 134 kWh in winter, or 295 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
886kWh/kW
A 1 kW system generates ~886 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

Belfast (98%)|Antrim and Newtownabbey (2%)

Areas Covered

Water Works, Legoniel, Ardoyne, Cliftonville, Ballysillan, Cavehill, Chichester Park, Forth River + 4 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

BT13 (Belfast)
≈1.6 km away
Local sunshine: ~886 kWh/kWp · +0% vs BT14
BT15 (Belfast)
≈1.8 km away
Local sunshine: ~886 kWh/kWp · +0% vs BT14
BT12 (Belfast)
≈2.9 km away
Local sunshine: ~893 kWh/kWp · +1% vs BT14
BT1 (Belfast)
≈3.0 km away
Local sunshine: ~885 kWh/kWp · -0% vs BT14
BT99 (Belfast)
≈3.0 km away
Local sunshine: ~885 kWh/kWp · -0% vs BT14
BT3 (Belfast)
≈3.1 km away
Local sunshine: ~885 kWh/kWp · -0% vs BT14

Similar sunshine across the UK

CA1 (Cumberland)
~886 kWh/kWp · +0% vs BT14
CA99 (Cumberland)
~886 kWh/kWp · +0% vs BT14
PH13 (Perth and Kinross)
~886 kWh/kWp · +0% vs BT14