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

Solar Panels in BT76 (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
40.2 years
After this, it's pure profit
Upfront Cost
£12,207
What you pay to get started
Annual Benefit
£303
What you save every year
Profit Over 25 Years
£-4,620
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 843 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)
843 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: £253, Upfront: £10,173, Break-even: 40.2 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 674 kWh 1012 kWh £0 £101 £101 £4,069 40.2 yrs £-2,046
3 kW 2529 kWh 1012 kWh 1517 kWh £0 £152 £152 £6,104 40.2 yrs £-3,069
4 kW 3372 kWh 1349 kWh 2023 kWh £0 £202 £202 £8,138 40.2 yrs £-4,092
5 kW 4215 kWh 1686 kWh 2529 kWh £0 £253 £253 £10,173 40.2 yrs £-5,115
6 kW 5058 kWh 2023 kWh 3035 kWh £0 £303 £303 £12,207 40.2 yrs £-6,138
7 kW 5901 kWh 2360 kWh 3541 kWh £0 £354 £354 £14,242 40.2 yrs £-7,160
8 kW 6744 kWh 2698 kWh 4046 kWh £0 £405 £405 £16,276 40.2 yrs £-8,183

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: £169, Upfront: £12,273, Break-even: 72.8 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 1012 kWh 674 kWh £0 £67 £67 £6,169 91.5 yrs £-4,820
3 kW 2529 kWh 1517 kWh 1012 kWh £0 £101 £101 £8,204 81.1 yrs £-6,180
4 kW 3372 kWh 2023 kWh 1349 kWh £0 £135 £135 £10,238 75.9 yrs £-7,540
5 kW 4215 kWh 2529 kWh 1686 kWh £0 £169 £169 £12,273 72.8 yrs £-8,901
6 kW 5058 kWh 3035 kWh 2023 kWh £0 £202 £202 £14,307 70.7 yrs £-10,261
7 kW 5901 kWh 3541 kWh 2360 kWh £0 £236 £236 £16,342 69.2 yrs £-11,621
8 kW 6744 kWh 4046 kWh 2698 kWh £0 £270 £270 £18,376 68.1 yrs £-12,981

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: £126, Upfront: £13,673, Break-even: 108.1 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 1180 kWh 506 kWh £0 £51 £51 £7,569 149.6 yrs £-6,557
3 kW 2529 kWh 1770 kWh 759 kWh £0 £76 £76 £9,604 126.6 yrs £-8,086
4 kW 3372 kWh 2360 kWh 1012 kWh £0 £101 £101 £11,638 115.0 yrs £-9,615
5 kW 4215 kWh 2950 kWh 1264 kWh £0 £126 £126 £13,673 108.1 yrs £-11,144
6 kW 5058 kWh 3541 kWh 1517 kWh £0 £152 £152 £15,707 103.5 yrs £-12,672
7 kW 5901 kWh 4131 kWh 1770 kWh £0 £177 £177 £17,742 100.2 yrs £-14,201
8 kW 6744 kWh 4721 kWh 2023 kWh £0 £202 £202 £19,776 97.7 yrs £-15,730

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: £114, Upfront: £15,423, Break-even: 135.5 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 1231 kWh 455 kWh £0 £46 £46 £9,319 204.7 yrs £-8,409
3 kW 2529 kWh 1846 kWh 683 kWh £0 £68 £68 £11,354 166.3 yrs £-9,988
4 kW 3372 kWh 2462 kWh 910 kWh £0 £91 £91 £13,388 147.1 yrs £-11,567
5 kW 4215 kWh 3077 kWh 1138 kWh £0 £114 £114 £15,423 135.5 yrs £-13,146
6 kW 5058 kWh 3692 kWh 1366 kWh £0 £137 £137 £17,457 127.8 yrs £-14,726
7 kW 5901 kWh 4308 kWh 1593 kWh £0 £159 £159 £19,492 122.3 yrs £-16,305
8 kW 6744 kWh 4923 kWh 1821 kWh £0 £182 £182 £21,526 118.2 yrs £-17,884

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: £105, Upfront: £17,173, Break-even: 163.0 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 1264 kWh 421 kWh £0 £42 £42 £11,069 262.6 yrs £-10,226
3 kW 2529 kWh 1897 kWh 632 kWh £0 £63 £63 £13,104 207.3 yrs £-11,839
4 kW 3372 kWh 2529 kWh 843 kWh £0 £84 £84 £15,138 179.6 yrs £-13,452
5 kW 4215 kWh 3161 kWh 1054 kWh £0 £105 £105 £17,173 163.0 yrs £-15,065
6 kW 5058 kWh 3793 kWh 1264 kWh £0 £126 £126 £19,207 151.9 yrs £-16,678
7 kW 5901 kWh 4426 kWh 1475 kWh £0 £148 £148 £21,242 144.0 yrs £-18,291
8 kW 6744 kWh 5058 kWh 1686 kWh £0 £169 £169 £23,276 138.1 yrs £-19,904

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: £97, Upfront: £19,623, Break-even: 202.4 yrs
System Annual output Self-use Exported Bill saving Export income Annual benefit Upfront cost Break-even 20-year net
2 kW 1686 kWh 1298 kWh 388 kWh £0 £39 £39 £13,519 348.6 yrs £-12,743
3 kW 2529 kWh 1947 kWh 582 kWh £0 £58 £58 £15,554 267.4 yrs £-14,390
4 kW 3372 kWh 2596 kWh 776 kWh £0 £78 £78 £17,588 226.8 yrs £-16,037
5 kW 4215 kWh 3246 kWh 969 kWh £0 £97 £97 £19,623 202.4 yrs £-17,684
6 kW 5058 kWh 3895 kWh 1163 kWh £0 £116 £116 £21,657 186.2 yrs £-19,330
7 kW 5901 kWh 4544 kWh 1357 kWh £0 £136 £136 £23,692 174.6 yrs £-20,977
8 kW 6744 kWh 5193 kWh 1551 kWh £0 £155 £155 £25,726 165.9 yrs £-22,624

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
843kWh/kW
A 1 kW system generates ~843 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 (95%)|Fermanagh and Omagh (5%)

Areas Covered

Fivemiletown, Augher and Clogher, Newtownsaville

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.