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Big Roof Britain Solar Payback Index Standing Charge Drag

Solar Panels in BT93 (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
40.9 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£298
What you save every year
Profit Over 25 Years
£-4,750
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 829 kWh/kW — 162 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 829 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)
829 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: £249, Upfront: £10,173, Break-even: 40.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 663 kWh 994 kWh £0 £99 £99 £4,069 40.9 yrs £-2,080
3 kW 2486 kWh 994 kWh 1491 kWh £0 £149 £149 £6,104 40.9 yrs £-3,121
4 kW 3314 kWh 1326 kWh 1989 kWh £0 £199 £199 £8,138 40.9 yrs £-4,161
5 kW 4143 kWh 1657 kWh 2486 kWh £0 £249 £249 £10,173 40.9 yrs £-5,201
6 kW 4972 kWh 1989 kWh 2983 kWh £0 £298 £298 £12,207 40.9 yrs £-6,241
7 kW 5800 kWh 2320 kWh 3480 kWh £0 £348 £348 £14,242 40.9 yrs £-7,281
8 kW 6629 kWh 2651 kWh 3977 kWh £0 £398 £398 £16,276 40.9 yrs £-8,322

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: £166, Upfront: £12,273, Break-even: 74.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 994 kWh 663 kWh £0 £66 £66 £6,169 93.1 yrs £-4,843
3 kW 2486 kWh 1491 kWh 994 kWh £0 £99 £99 £8,204 82.5 yrs £-6,215
4 kW 3314 kWh 1989 kWh 1326 kWh £0 £133 £133 £10,238 77.2 yrs £-7,587
5 kW 4143 kWh 2486 kWh 1657 kWh £0 £166 £166 £12,273 74.1 yrs £-8,958
6 kW 4972 kWh 2983 kWh 1989 kWh £0 £199 £199 £14,307 71.9 yrs £-10,330
7 kW 5800 kWh 3480 kWh 2320 kWh £0 £232 £232 £16,342 70.4 yrs £-11,701
8 kW 6629 kWh 3977 kWh 2651 kWh £0 £265 £265 £18,376 69.3 yrs £-13,073

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: £124, Upfront: £13,673, Break-even: 110.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1160 kWh 497 kWh £0 £50 £50 £7,569 152.2 yrs £-6,575
3 kW 2486 kWh 1740 kWh 746 kWh £0 £75 £75 £9,604 128.8 yrs £-8,112
4 kW 3314 kWh 2320 kWh 994 kWh £0 £99 £99 £11,638 117.0 yrs £-9,649
5 kW 4143 kWh 2900 kWh 1243 kWh £0 £124 £124 £13,673 110.0 yrs £-11,187
6 kW 4972 kWh 3480 kWh 1491 kWh £0 £149 £149 £15,707 105.3 yrs £-12,724
7 kW 5800 kWh 4060 kWh 1740 kWh £0 £174 £174 £17,742 102.0 yrs £-14,261
8 kW 6629 kWh 4640 kWh 1989 kWh £0 £199 £199 £19,776 99.4 yrs £-15,799

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: £112, Upfront: £15,423, Break-even: 137.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1210 kWh 447 kWh £0 £45 £45 £9,319 208.3 yrs £-8,424
3 kW 2486 kWh 1815 kWh 671 kWh £0 £67 £67 £11,354 169.2 yrs £-10,011
4 kW 3314 kWh 2419 kWh 895 kWh £0 £89 £89 £13,388 149.6 yrs £-11,598
5 kW 4143 kWh 3024 kWh 1119 kWh £0 £112 £112 £15,423 137.9 yrs £-13,185
6 kW 4972 kWh 3629 kWh 1342 kWh £0 £134 £134 £17,457 130.1 yrs £-14,772
7 kW 5800 kWh 4234 kWh 1566 kWh £0 £157 £157 £19,492 124.5 yrs £-16,359
8 kW 6629 kWh 4839 kWh 1790 kWh £0 £179 £179 £21,526 120.3 yrs £-17,947

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: 165.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1243 kWh 414 kWh £0 £41 £41 £11,069 267.2 yrs £-10,240
3 kW 2486 kWh 1864 kWh 621 kWh £0 £62 £62 £13,104 210.9 yrs £-11,861
4 kW 3314 kWh 2486 kWh 829 kWh £0 £83 £83 £15,138 182.7 yrs £-13,481
5 kW 4143 kWh 3107 kWh 1036 kWh £0 £104 £104 £17,173 165.8 yrs £-15,101
6 kW 4972 kWh 3729 kWh 1243 kWh £0 £124 £124 £19,207 154.5 yrs £-16,721
7 kW 5800 kWh 4350 kWh 1450 kWh £0 £145 £145 £21,242 146.5 yrs £-18,342
8 kW 6629 kWh 4972 kWh 1657 kWh £0 £166 £166 £23,276 140.5 yrs £-19,962

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: £95, Upfront: £19,623, Break-even: 205.9 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1657 kWh 1276 kWh 381 kWh £0 £38 £38 £13,519 354.7 yrs £-12,757
3 kW 2486 kWh 1914 kWh 572 kWh £0 £57 £57 £15,554 272.0 yrs £-14,410
4 kW 3314 kWh 2552 kWh 762 kWh £0 £76 £76 £17,588 230.7 yrs £-16,063
5 kW 4143 kWh 3190 kWh 953 kWh £0 £95 £95 £19,623 205.9 yrs £-17,717
6 kW 4972 kWh 3828 kWh 1143 kWh £0 £114 £114 £21,657 189.4 yrs £-19,370
7 kW 5800 kWh 4466 kWh 1334 kWh £0 £133 £133 £23,692 177.6 yrs £-21,024
8 kW 6629 kWh 5104 kWh 1525 kWh £0 £152 £152 £25,726 168.7 yrs £-22,677

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
829kWh/kW
A 1 kW system generates ~829 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

Belleek and Boa, Derrygonnelly, Belcoo and Garrison, Ederney and Kesh, Boho, Cleenish and Letterbreen, Irvinestown, Derrylin + 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)
≈18.7 km away
Local sunshine: ~835 kWh/kWp · +1% vs BT93
BT94 (Fermanagh and Omagh)
≈21.6 km away
Local sunshine: ~835 kWh/kWp · +1% vs BT93
BT81 (Derry City and Strabane)
≈28.3 km away
Local sunshine: ~837 kWh/kWp · +1% vs BT93
BT78 (Fermanagh and Omagh)
≈32.1 km away
Local sunshine: ~832 kWh/kWp · +0% vs BT93
BT75 (Mid Ulster)
≈34.1 km away
Local sunshine: ~824 kWh/kWp · -1% vs BT93
BT92 (Fermanagh and Omagh)
≈37.0 km away
Local sunshine: ~843 kWh/kWp · +2% vs BT93

Similar sunshine across the UK

KW9 (Highland)
~829 kWh/kWp · -0% vs BT93
G51 (Glasgow City)
~828 kWh/kWp · -0% vs BT93
OL1 (Oldham)
~829 kWh/kWp · +0% vs BT93