Solar explained to clever people by people who are not trying to be clever

Solar Panels in BT75 (Mid Ulster)

See if solar pays off for you in Mid Ulster — 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
41.1 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£297
What you save every year
Profit Over 25 Years
£-4,789
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

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 824 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)
824 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: £247, Upfront: £10,173, Break-even: 41.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 659 kWh 989 kWh £0 £99 £99 £4,069 41.1 yrs £-2,091
3 kW 2473 kWh 989 kWh 1484 kWh £0 £148 £148 £6,104 41.1 yrs £-3,136
4 kW 3297 kWh 1319 kWh 1978 kWh £0 £198 £198 £8,138 41.1 yrs £-4,182
5 kW 4121 kWh 1648 kWh 2473 kWh £0 £247 £247 £10,173 41.1 yrs £-5,227
6 kW 4945 kWh 1978 kWh 2967 kWh £0 £297 £297 £12,207 41.1 yrs £-6,273
7 kW 5770 kWh 2308 kWh 3462 kWh £0 £346 £346 £14,242 41.1 yrs £-7,318
8 kW 6594 kWh 2638 kWh 3956 kWh £0 £396 £396 £16,276 41.1 yrs £-8,363

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: £165, Upfront: £12,273, Break-even: 74.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 989 kWh 659 kWh £0 £66 £66 £6,169 93.6 yrs £-4,850
3 kW 2473 kWh 1484 kWh 989 kWh £0 £99 £99 £8,204 82.9 yrs £-6,225
4 kW 3297 kWh 1978 kWh 1319 kWh £0 £132 £132 £10,238 77.6 yrs £-7,600
5 kW 4121 kWh 2473 kWh 1648 kWh £0 £165 £165 £12,273 74.4 yrs £-8,976
6 kW 4945 kWh 2967 kWh 1978 kWh £0 £198 £198 £14,307 72.3 yrs £-10,351
7 kW 5770 kWh 3462 kWh 2308 kWh £0 £231 £231 £16,342 70.8 yrs £-11,726
8 kW 6594 kWh 3956 kWh 2638 kWh £0 £264 £264 £18,376 69.7 yrs £-13,101

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: 110.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 1154 kWh 495 kWh £0 £49 £49 £7,569 153.1 yrs £-6,580
3 kW 2473 kWh 1731 kWh 742 kWh £0 £74 £74 £9,604 129.5 yrs £-8,120
4 kW 3297 kWh 2308 kWh 989 kWh £0 £99 £99 £11,638 117.7 yrs £-9,660
5 kW 4121 kWh 2885 kWh 1236 kWh £0 £124 £124 £13,673 110.6 yrs £-11,200
6 kW 4945 kWh 3462 kWh 1484 kWh £0 £148 £148 £15,707 105.9 yrs £-12,740
7 kW 5770 kWh 4039 kWh 1731 kWh £0 £173 £173 £17,742 102.5 yrs £-14,280
8 kW 6594 kWh 4616 kWh 1978 kWh £0 £198 £198 £19,776 100.0 yrs £-15,820

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: £111, Upfront: £15,423, Break-even: 138.6 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 1203 kWh 445 kWh £0 £45 £45 £9,319 209.4 yrs £-8,429
3 kW 2473 kWh 1805 kWh 668 kWh £0 £67 £67 £11,354 170.1 yrs £-10,018
4 kW 3297 kWh 2407 kWh 890 kWh £0 £89 £89 £13,388 150.4 yrs £-11,608
5 kW 4121 kWh 3008 kWh 1113 kWh £0 £111 £111 £15,423 138.6 yrs £-13,197
6 kW 4945 kWh 3610 kWh 1335 kWh £0 £134 £134 £17,457 130.7 yrs £-14,787
7 kW 5770 kWh 4212 kWh 1558 kWh £0 £156 £156 £19,492 125.1 yrs £-16,376
8 kW 6594 kWh 4814 kWh 1780 kWh £0 £178 £178 £21,526 120.9 yrs £-17,965

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: £103, Upfront: £17,173, Break-even: 166.7 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 1236 kWh 412 kWh £0 £41 £41 £11,069 268.6 yrs £-10,245
3 kW 2473 kWh 1855 kWh 618 kWh £0 £62 £62 £13,104 212.0 yrs £-11,867
4 kW 3297 kWh 2473 kWh 824 kWh £0 £82 £82 £15,138 183.7 yrs £-13,490
5 kW 4121 kWh 3091 kWh 1030 kWh £0 £103 £103 £17,173 166.7 yrs £-15,112
6 kW 4945 kWh 3709 kWh 1236 kWh £0 £124 £124 £19,207 155.4 yrs £-16,734
7 kW 5770 kWh 4327 kWh 1442 kWh £0 £144 £144 £21,242 147.3 yrs £-18,357
8 kW 6594 kWh 4945 kWh 1648 kWh £0 £165 £165 £23,276 141.2 yrs £-19,979

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: 207.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1648 kWh 1269 kWh 379 kWh £0 £38 £38 £13,519 356.6 yrs £-12,761
3 kW 2473 kWh 1904 kWh 569 kWh £0 £57 £57 £15,554 273.5 yrs £-14,416
4 kW 3297 kWh 2539 kWh 758 kWh £0 £76 £76 £17,588 231.9 yrs £-16,071
5 kW 4121 kWh 3173 kWh 948 kWh £0 £95 £95 £19,623 207.0 yrs £-17,727
6 kW 4945 kWh 3808 kWh 1137 kWh £0 £114 £114 £21,657 190.4 yrs £-19,382
7 kW 5770 kWh 4443 kWh 1327 kWh £0 £133 £133 £23,692 178.5 yrs £-21,038
8 kW 6594 kWh 5077 kWh 1517 kWh £0 £152 £152 £25,726 169.6 yrs £-22,693

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
824kWh/kW
A 1 kW system generates ~824 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

Mid Ulster (54%)|Fermanagh and Omagh (46%)

Areas Covered

Fivemiletown, Brookeborough, Tempo

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.