Two long poultry houses whose fans, lights and feed lines now run on their own roofs.
The brief
Ventilation and lighting run all year, so the farm wanted every daylight hour on the roof.
What we fitted
Seventy-five panels split across both south faces, a 30 kW three-phase inverter and a 20 kWh battery for the early-morning lights.
Twelve months on
27,000 kWh generated, two thirds of it used on the farm, and a payback forecast of just over six years.
Field plate · STC
Pmax · rated output
30
kWp
Panels
75 × 400 W
Battery
20 kWh
Yield / yr
27,000 kWh
Payback
6.4 yrs
CO₂ saved
9.9 t/yr
Roof
Pitched
Switched on
Aug 20, 2024
Want a plate like this for your roof?
17:05
On the roof
18:30
In their words
The houses run fans and lights all day, so every kWh off the roof counts. The plate said 6.4 years; we are on track to beat it.
Declan Hayes
Innishannon