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Solar panel cost in Ards and North Down (BT23)

See realistic solar installation costs, savings and payback for BT23 (Ards and North 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
30.1 years
After this, it's pure profit
Upfront Cost
£9,767
What you pay to get started
Annual Benefit
£325
What you save every year
Profit Over 25 Years
£-1,645
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 902 kWh/kW — 88 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 902 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)
902 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: £271, Upfront: £8,139, Break-even: 30.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 722 kWh 1083 kWh £0 £108 £108 £3,256 30.1 yrs £-1,090
3 kW 2707 kWh 1083 kWh 1624 kWh £0 £162 £162 £4,883 30.1 yrs £-1,634
4 kW 3610 kWh 1444 kWh 2166 kWh £0 £217 £217 £6,511 30.1 yrs £-2,179
5 kW 4512 kWh 1805 kWh 2707 kWh £0 £271 £271 £8,139 30.1 yrs £-2,724
6 kW 5415 kWh 2166 kWh 3249 kWh £0 £325 £325 £9,767 30.1 yrs £-3,269
7 kW 6317 kWh 2527 kWh 3790 kWh £0 £379 £379 £11,394 30.1 yrs £-3,814
8 kW 7220 kWh 2888 kWh 4332 kWh £0 £433 £433 £13,022 30.1 yrs £-4,359

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: £180, Upfront: £10,239, Break-even: 56.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 1083 kWh 722 kWh £0 £72 £72 £5,356 74.2 yrs £-3,912
3 kW 2707 kWh 1624 kWh 1083 kWh £0 £108 £108 £6,983 64.5 yrs £-4,817
4 kW 3610 kWh 2166 kWh 1444 kWh £0 £144 £144 £8,611 59.6 yrs £-5,723
5 kW 4512 kWh 2707 kWh 1805 kWh £0 £180 £180 £10,239 56.7 yrs £-6,629
6 kW 5415 kWh 3249 kWh 2166 kWh £0 £217 £217 £11,867 54.8 yrs £-7,535
7 kW 6317 kWh 3790 kWh 2527 kWh £0 £253 £253 £13,494 53.4 yrs £-8,441
8 kW 7220 kWh 4332 kWh 2888 kWh £0 £289 £289 £15,122 52.4 yrs £-9,346

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: £135, Upfront: £11,639, Break-even: 86.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 1263 kWh 541 kWh £0 £54 £54 £6,756 124.8 yrs £-5,673
3 kW 2707 kWh 1895 kWh 812 kWh £0 £81 £81 £8,383 103.2 yrs £-6,759
4 kW 3610 kWh 2527 kWh 1083 kWh £0 £108 £108 £10,011 92.4 yrs £-7,845
5 kW 4512 kWh 3159 kWh 1354 kWh £0 £135 £135 £11,639 86.0 yrs £-8,931
6 kW 5415 kWh 3790 kWh 1624 kWh £0 £162 £162 £13,267 81.7 yrs £-10,018
7 kW 6317 kWh 4422 kWh 1895 kWh £0 £190 £190 £14,894 78.6 yrs £-11,104
8 kW 7220 kWh 5054 kWh 2166 kWh £0 £217 £217 £16,522 76.3 yrs £-12,190

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: £122, Upfront: £13,389, Break-even: 109.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 1318 kWh 487 kWh £0 £49 £49 £8,506 174.5 yrs £-7,531
3 kW 2707 kWh 1976 kWh 731 kWh £0 £73 £73 £10,133 138.6 yrs £-8,671
4 kW 3610 kWh 2635 kWh 975 kWh £0 £97 £97 £11,761 120.7 yrs £-9,812
5 kW 4512 kWh 3294 kWh 1218 kWh £0 £122 £122 £13,389 109.9 yrs £-10,952
6 kW 5415 kWh 3953 kWh 1462 kWh £0 £146 £146 £15,017 102.7 yrs £-12,093
7 kW 6317 kWh 4612 kWh 1706 kWh £0 £171 £171 £16,644 97.6 yrs £-13,233
8 kW 7220 kWh 5270 kWh 1949 kWh £0 £195 £195 £18,272 93.7 yrs £-14,373

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: £113, Upfront: £15,139, Break-even: 134.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 1354 kWh 451 kWh £0 £45 £45 £10,256 227.3 yrs £-9,353
3 kW 2707 kWh 2031 kWh 677 kWh £0 £68 £68 £11,883 175.6 yrs £-10,530
4 kW 3610 kWh 2707 kWh 902 kWh £0 £90 £90 £13,511 149.7 yrs £-11,706
5 kW 4512 kWh 3384 kWh 1128 kWh £0 £113 £113 £15,139 134.2 yrs £-12,883
6 kW 5415 kWh 4061 kWh 1354 kWh £0 £135 £135 £16,767 123.9 yrs £-14,059
7 kW 6317 kWh 4738 kWh 1579 kWh £0 £158 £158 £18,394 116.5 yrs £-15,236
8 kW 7220 kWh 5415 kWh 1805 kWh £0 £180 £180 £20,022 110.9 yrs £-16,412

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: £104, Upfront: £17,589, Break-even: 169.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1805 kWh 1390 kWh 415 kWh £0 £42 £42 £12,706 306.1 yrs £-11,875
3 kW 2707 kWh 2085 kWh 623 kWh £0 £62 £62 £14,333 230.2 yrs £-13,088
4 kW 3610 kWh 2780 kWh 830 kWh £0 £83 £83 £15,961 192.2 yrs £-14,301
5 kW 4512 kWh 3474 kWh 1038 kWh £0 £104 £104 £17,589 169.5 yrs £-15,513
6 kW 5415 kWh 4169 kWh 1245 kWh £0 £125 £125 £19,217 154.3 yrs £-16,726
7 kW 6317 kWh 4864 kWh 1453 kWh £0 £145 £145 £20,844 143.5 yrs £-17,938
8 kW 7220 kWh 5559 kWh 1661 kWh £0 £166 £166 £22,472 135.3 yrs £-19,151

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 Ards and North 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 BT23

Figures below are tailored to BT23 — click through for full league tables.

Aspect Penalty View ranking →
East −21.3% West −21.5%
Typical output loss versus a south-facing roof (lower is better)

Seasonal solar output in BT23

Monthly generation per kilowatt of solar panels

kWh 30 Jan 46 Feb 79 Mar 107 Apr 120 May 116 Jun 108 Jul 97 Aug 79 Sep 57 Oct 37 Nov 28 Dec
Best month Worst month Winter (Dec–Feb) Other months

Winter output: 46.1% 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 35 kWh per month; the average month produces around 75 kWh. So a typical 4 kW home system would generate roughly 139 kWh in winter, or 301 kWh in an average month.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
902kWh/kW
A 1 kW system generates ~902 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

Ards and North Down (96%)|Lisburn and Castlereagh (3%)|Newry, Mourne and Down (1%)

Areas Covered

Conway Square, Gregstown, Glen, Movilla, Scrabo, Cronstown, Killinchy, Ballygowan + 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

BT16 (Lisburn and Castlereagh)
≈6.6 km away
Local sunshine: ~924 kWh/kWp · +2% vs BT23
BT19 (Ards and North Down)
≈7.0 km away
Local sunshine: ~956 kWh/kWp · +6% vs BT23
BT20 (Ards and North Down)
≈7.8 km away
Local sunshine: ~918 kWh/kWp · +2% vs BT23
BT18 (Ards and North Down)
≈10.2 km away
Local sunshine: ~918 kWh/kWp · +2% vs BT23
BT21 (Ards and North Down)
≈11.2 km away
Local sunshine: ~922 kWh/kWp · +2% vs BT23
BT4 (Belfast)
≈11.3 km away
Local sunshine: ~892 kWh/kWp · -1% vs BT23

Similar sunshine across the UK

HX1 (Calderdale)
~902 kWh/kWp · -0% vs BT23
LD1 (Powys)
~902 kWh/kWp · -0% vs BT23
TS15 (Stockton-on-Tees)
~902 kWh/kWp · -0% vs BT23