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Solar panel cost in Newry, Mourne and Down (BT30)

See realistic solar installation costs, savings and payback for BT30 (Newry, Mourne and Down) 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
27.8 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£351
What you save every year
Profit Over 25 Years
£-986
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 976 kWh/kW — 15 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 976 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)
976 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: £293, Upfront: £8,139, Break-even: 27.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 780 kWh 1171 kWh £0 £117 £117 £3,256 27.8 yrs £-914
3 kW 2927 kWh 1171 kWh 1756 kWh £0 £176 £176 £4,883 27.8 yrs £-1,371
4 kW 3902 kWh 1561 kWh 2341 kWh £0 £234 £234 £6,511 27.8 yrs £-1,828
5 kW 4878 kWh 1951 kWh 2927 kWh £0 £293 £293 £8,139 27.8 yrs £-2,285
6 kW 5853 kWh 2341 kWh 3512 kWh £0 £351 £351 £9,767 27.8 yrs £-2,742
7 kW 6829 kWh 2732 kWh 4097 kWh £0 £410 £410 £11,394 27.8 yrs £-3,200
8 kW 7805 kWh 3122 kWh 4683 kWh £0 £468 £468 £13,022 27.8 yrs £-3,657

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: £195, Upfront: £10,239, Break-even: 52.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1171 kWh 780 kWh £0 £78 £78 £5,356 68.6 yrs £-3,795
3 kW 2927 kWh 1756 kWh 1171 kWh £0 £117 £117 £6,983 59.7 yrs £-4,642
4 kW 3902 kWh 2341 kWh 1561 kWh £0 £156 £156 £8,611 55.2 yrs £-5,489
5 kW 4878 kWh 2927 kWh 1951 kWh £0 £195 £195 £10,239 52.5 yrs £-6,337
6 kW 5853 kWh 3512 kWh 2341 kWh £0 £234 £234 £11,867 50.7 yrs £-7,184
7 kW 6829 kWh 4097 kWh 2732 kWh £0 £273 £273 £13,494 49.4 yrs £-8,031
8 kW 7805 kWh 4683 kWh 3122 kWh £0 £312 £312 £15,122 48.4 yrs £-8,878

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: £146, Upfront: £11,639, Break-even: 79.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1366 kWh 585 kWh £0 £59 £59 £6,756 115.4 yrs £-5,585
3 kW 2927 kWh 2049 kWh 878 kWh £0 £88 £88 £8,383 95.5 yrs £-6,627
4 kW 3902 kWh 2732 kWh 1171 kWh £0 £117 £117 £10,011 85.5 yrs £-7,670
5 kW 4878 kWh 3414 kWh 1463 kWh £0 £146 £146 £11,639 79.5 yrs £-8,712
6 kW 5853 kWh 4097 kWh 1756 kWh £0 £176 £176 £13,267 75.5 yrs £-9,755
7 kW 6829 kWh 4780 kWh 2049 kWh £0 £205 £205 £14,894 72.7 yrs £-10,797
8 kW 7805 kWh 5463 kWh 2341 kWh £0 £234 £234 £16,522 70.6 yrs £-11,839

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: £132, Upfront: £13,389, Break-even: 101.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1424 kWh 527 kWh £0 £53 £53 £8,506 161.5 yrs £-7,452
3 kW 2927 kWh 2136 kWh 790 kWh £0 £79 £79 £10,133 128.2 yrs £-8,553
4 kW 3902 kWh 2849 kWh 1054 kWh £0 £105 £105 £11,761 111.6 yrs £-9,654
5 kW 4878 kWh 3561 kWh 1317 kWh £0 £132 £132 £13,389 101.7 yrs £-10,755
6 kW 5853 kWh 4273 kWh 1580 kWh £0 £158 £158 £15,017 95.0 yrs £-11,856
7 kW 6829 kWh 4985 kWh 1844 kWh £0 £184 £184 £16,644 90.3 yrs £-12,957
8 kW 7805 kWh 5697 kWh 2107 kWh £0 £211 £211 £18,272 86.7 yrs £-14,058

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: £122, Upfront: £15,139, Break-even: 124.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1463 kWh 488 kWh £0 £49 £49 £10,256 210.2 yrs £-9,280
3 kW 2927 kWh 2195 kWh 732 kWh £0 £73 £73 £11,883 162.4 yrs £-10,420
4 kW 3902 kWh 2927 kWh 976 kWh £0 £98 £98 £13,511 138.5 yrs £-11,560
5 kW 4878 kWh 3658 kWh 1219 kWh £0 £122 £122 £15,139 124.1 yrs £-12,700
6 kW 5853 kWh 4390 kWh 1463 kWh £0 £146 £146 £16,767 114.6 yrs £-13,840
7 kW 6829 kWh 5122 kWh 1707 kWh £0 £171 £171 £18,394 107.7 yrs £-14,980
8 kW 7805 kWh 5853 kWh 1951 kWh £0 £195 £195 £20,022 102.6 yrs £-16,120

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: £112, Upfront: £17,589, Break-even: 156.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1951 kWh 1502 kWh 449 kWh £0 £45 £45 £12,706 283.1 yrs £-11,808
3 kW 2927 kWh 2254 kWh 673 kWh £0 £67 £67 £14,333 212.9 yrs £-12,987
4 kW 3902 kWh 3005 kWh 898 kWh £0 £90 £90 £15,961 177.8 yrs £-14,166
5 kW 4878 kWh 3756 kWh 1122 kWh £0 £112 £112 £17,589 156.8 yrs £-15,345
6 kW 5853 kWh 4507 kWh 1346 kWh £0 £135 £135 £19,217 142.7 yrs £-16,524
7 kW 6829 kWh 5258 kWh 1571 kWh £0 £157 £157 £20,844 132.7 yrs £-17,703
8 kW 7805 kWh 6010 kWh 1795 kWh £0 £180 £180 £22,472 125.2 yrs £-18,882

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 Newry, Mourne and Down

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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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 BT30

Figures below are tailored to BT30 — click through for full league tables.

Aspect Penalty View ranking →
East −22.2% West −22.1%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT30

Monthly generation per kilowatt of solar panels

kWh 33 Jan 50 Feb 86 Mar 114 Apr 128 May 123 Jun 118 Jul 107 Aug 88 Sep 62 Oct 40 Nov 28 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 45.4% 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 37 kWh per month; the average month produces around 81 kWh. So a typical 4 kW home system would generate roughly 148 kWh in winter, or 325 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
976kWh/kW
A 1 kW system generates ~976 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

Newry, Mourne and Down (100%)

Areas Covered

Strangford, Lecale, Cathedral, Ballydugan, Crossgar and Killyleagh, Knocknashinna, Quoile, Derryboy + 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

BT24 (Newry, Mourne and Down)
≈14.4 km away
Local sunshine: ~917 kWh/kWp · -6% vs BT30
BT31 (Newry, Mourne and Down)
≈16.8 km away
Local sunshine: ~916 kWh/kWp · -6% vs BT30
BT33 (Newry, Mourne and Down)
≈17.1 km away
Local sunshine: ~895 kWh/kWp · -8% vs BT30
BT22 (Ards and North Down)
≈22.2 km away
Local sunshine: ~950 kWh/kWp · -3% vs BT30
BT8 (Lisburn and Castlereagh)
≈27.8 km away
Local sunshine: ~891 kWh/kWp · -9% vs BT30
BT26 (Lisburn and Castlereagh)
≈28.2 km away
Local sunshine: ~889 kWh/kWp · -9% vs BT30

Similar sunshine across the UK

DN31 (North East Lincolnshire)
~976 kWh/kWp · +0% vs BT30
HP15 (Buckinghamshire)
~976 kWh/kWp · -0% vs BT30
PL18 (Cornwall)
~976 kWh/kWp · +0% vs BT30