Tuesday, 22 September 2026(forecast)
Solar generation in Ballymena, Tuesday, 22 September 2026
Overcast in Ballymena. A 4kW install would still produce about 4.6 kWh of free electricity today.
4kW system
Typical 3-bed NI home (10-12 panels)
4.6 kWh
£1.55 of electricity
6kW system
Larger home, EV owner, or heat pump
7 kWh
£2.33 of electricity
Weather on the day
- Sunshine
- 3.2 h
- Cloud cover
- 73%
- Max temp
- 18.9°C
- Solar radiation
- 1.49 kWh/m²
Want this generating on your roof?
Compare quotes from MCS certified installers in Ballymena. Free, no obligation, and quotes for the same system routinely differ by more than £1,000.
Recent days in Ballymena
How we worked this out
We used daily shortwave radiation data for Ballymena from Open-Meteo and applied the standard PV yield model:energy = radiation × system kWp × performance ratio. The performance ratio is 0.78 (accounts for inverter and temperature losses, orientation and soiling). Electricity is valued at 33.5p/kWh, the tracker's fixed assumption. Power NI's standard credit rate is 32.100p, so a Power NI household should read these savings as slightly high.
Figures are an estimate based on forecast conditions and a representative install. Actual generation varies with roof orientation, shading and hardware.