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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in BT94 (Fermanagh and Omagh)

See if solar pays off for you in Fermanagh and Omagh — price, savings and payback in under a minute (official UK data).

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
40.6 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£301
What you save every year
Profit Over 25 Years
£-4,694
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: Bigger systems don’t shorten payback—cost and savings rise together per kW.
  • 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

Costs: Battery prices are typically £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 835 kWh/kW — 156 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 835 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)
835 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: £250, Upfront: £10,173, Break-even: 40.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 668 kWh 1002 kWh £0 £100 £100 £4,069 40.6 yrs £-2,066
3 kW 2504 kWh 1002 kWh 1503 kWh £0 £150 £150 £6,104 40.6 yrs £-3,098
4 kW 3339 kWh 1336 kWh 2004 kWh £0 £200 £200 £8,138 40.6 yrs £-4,131
5 kW 4174 kWh 1670 kWh 2504 kWh £0 £250 £250 £10,173 40.6 yrs £-5,164
6 kW 5009 kWh 2004 kWh 3005 kWh £0 £301 £301 £12,207 40.6 yrs £-6,196
7 kW 5844 kWh 2337 kWh 3506 kWh £0 £351 £351 £14,242 40.6 yrs £-7,229
8 kW 6678 kWh 2671 kWh 4007 kWh £0 £401 £401 £16,276 40.6 yrs £-8,262

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

3 kWh battery 5 kW example → Annual benefit: £167, Upfront: £12,273, Break-even: 73.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 1002 kWh 668 kWh £0 £67 £67 £6,169 92.4 yrs £-4,833
3 kW 2504 kWh 1503 kWh 1002 kWh £0 £100 £100 £8,204 81.9 yrs £-6,200
4 kW 3339 kWh 2004 kWh 1336 kWh £0 £134 £134 £10,238 76.7 yrs £-7,567
5 kW 4174 kWh 2504 kWh 1670 kWh £0 £167 £167 £12,273 73.5 yrs £-8,933
6 kW 5009 kWh 3005 kWh 2004 kWh £0 £200 £200 £14,307 71.4 yrs £-10,300
7 kW 5844 kWh 3506 kWh 2337 kWh £0 £234 £234 £16,342 69.9 yrs £-11,667
8 kW 6678 kWh 4007 kWh 2671 kWh £0 £267 £267 £18,376 68.8 yrs £-13,033

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

5 kWh battery 5 kW example → Annual benefit: £125, Upfront: £13,673, Break-even: 109.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 1169 kWh 501 kWh £0 £50 £50 £7,569 151.1 yrs £-6,567
3 kW 2504 kWh 1753 kWh 751 kWh £0 £75 £75 £9,604 127.8 yrs £-8,101
4 kW 3339 kWh 2337 kWh 1002 kWh £0 £100 £100 £11,638 116.2 yrs £-9,635
5 kW 4174 kWh 2922 kWh 1252 kWh £0 £125 £125 £13,673 109.2 yrs £-11,168
6 kW 5009 kWh 3506 kWh 1503 kWh £0 £150 £150 £15,707 104.5 yrs £-12,702
7 kW 5844 kWh 4091 kWh 1753 kWh £0 £175 £175 £17,742 101.2 yrs £-14,235
8 kW 6678 kWh 4675 kWh 2004 kWh £0 £200 £200 £19,776 98.7 yrs £-15,769

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

7.5 kWh battery 5 kW example → Annual benefit: £113, Upfront: £15,423, Break-even: 136.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 1219 kWh 451 kWh £0 £45 £45 £9,319 206.7 yrs £-8,417
3 kW 2504 kWh 1828 kWh 676 kWh £0 £68 £68 £11,354 167.9 yrs £-10,001
4 kW 3339 kWh 2438 kWh 902 kWh £0 £90 £90 £13,388 148.5 yrs £-11,585
5 kW 4174 kWh 3047 kWh 1127 kWh £0 £113 £113 £15,423 136.8 yrs £-13,169
6 kW 5009 kWh 3656 kWh 1352 kWh £0 £135 £135 £17,457 129.1 yrs £-14,752
7 kW 5844 kWh 4266 kWh 1578 kWh £0 £158 £158 £19,492 123.5 yrs £-16,336
8 kW 6678 kWh 4875 kWh 1803 kWh £0 £180 £180 £21,526 119.4 yrs £-17,920

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

10 kWh battery 5 kW example → Annual benefit: £104, Upfront: £17,173, Break-even: 164.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 1252 kWh 417 kWh £0 £42 £42 £11,069 265.2 yrs £-10,234
3 kW 2504 kWh 1878 kWh 626 kWh £0 £63 £63 £13,104 209.3 yrs £-11,851
4 kW 3339 kWh 2504 kWh 835 kWh £0 £83 £83 £15,138 181.3 yrs £-13,468
5 kW 4174 kWh 3130 kWh 1044 kWh £0 £104 £104 £17,173 164.6 yrs £-15,086
6 kW 5009 kWh 3757 kWh 1252 kWh £0 £125 £125 £19,207 153.4 yrs £-16,703
7 kW 5844 kWh 4383 kWh 1461 kWh £0 £146 £146 £21,242 145.4 yrs £-18,320
8 kW 6678 kWh 5009 kWh 1670 kWh £0 £167 £167 £23,276 139.4 yrs £-19,937

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, battery £/kWh = 700.

13.5 kWh battery 5 kW example → Annual benefit: £96, Upfront: £19,623, Break-even: 204.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1670 kWh 1286 kWh 384 kWh £0 £38 £38 £13,519 352.1 yrs £-12,751
3 kW 2504 kWh 1928 kWh 576 kWh £0 £58 £58 £15,554 270.0 yrs £-14,402
4 kW 3339 kWh 2571 kWh 768 kWh £0 £77 £77 £17,588 229.0 yrs £-16,052
5 kW 4174 kWh 3214 kWh 960 kWh £0 £96 £96 £19,623 204.4 yrs £-17,703
6 kW 5009 kWh 3857 kWh 1152 kWh £0 £115 £115 £21,657 188.0 yrs £-19,353
7 kW 5844 kWh 4500 kWh 1344 kWh £0 £134 £134 £23,692 176.3 yrs £-21,004
8 kW 6678 kWh 5142 kWh 1536 kWh £0 £154 £154 £25,726 167.5 yrs £-22,654

Assumptions: south-facing, sensible tilt; self-use shares from site rules; export at 10p baseline. Costs: panels £/kW = 2,035, 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.

Your Area at a Glance

Your Electricity Rate
0.00p/kWh
Daily Fixed Charge
0.00p/day
Local Sunshine
835kWh/kW
A 1 kW system generates ~835 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

Fermanagh and Omagh (100%)

Areas Covered

Maguiresbridge, Brookeborough, Lisnarrick, Irvinestown, Tempo, Lisbellaw, Ballinamallard, Ederney and Kesh + 4 more

Data Sources & Assumptions

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

Electricity rates: Ofgem price cap, Q4 2025

Installation costs: MCS certified installer data, March 2025

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

BT74 (Fermanagh and Omagh)
≈7.2 km away
Local sunshine: ~835 kWh/kWp · +0% vs BT94
BT75 (Mid Ulster)
≈14.4 km away
Local sunshine: ~824 kWh/kWp · -1% vs BT94
BT92 (Fermanagh and Omagh)
≈17.0 km away
Local sunshine: ~843 kWh/kWp · +1% vs BT94
BT93 (Fermanagh and Omagh)
≈21.6 km away
Local sunshine: ~829 kWh/kWp · -1% vs BT94
BT76 (Mid Ulster)
≈22.9 km away
Local sunshine: ~843 kWh/kWp · +1% vs BT94
BT78 (Fermanagh and Omagh)
≈27.2 km away
Local sunshine: ~832 kWh/kWp · -0% vs BT94

Similar sunshine across the UK

LL45 (Gwynedd)
~835 kWh/kWp · -0% vs BT94
PA15 (Inverclyde)
~835 kWh/kWp · -0% vs BT94
G4 (Glasgow City)
~835 kWh/kWp · -0% vs BT94