Poultry farming is one of Kenya's fastest-growing agricultural businesses, from backyard layers to commercial broiler units. Power matters in three places: the incubator, which must never stop; lighting, which drives laying and growth; and brooding heat for young chicks, which uses far more energy than everything else. Solar suits the first two very well and the third poorly.
Incubators: reliability first
A 500-egg incubator might use about 150 W on average, around 3.6 kWh a day. The problem is not the energy, it is continuity: a long power cut at the wrong time can ruin a hatch worth far more than any battery.
- Back the incubator up with a battery, even if the farm is on the grid. Twelve hours of backup for a 150 W incubator needs about 1.8 kWh of usable storage, about 2 kWh of lithium battery.
- Use an inverter with a fast or uninterrupted changeover, so the incubator's controller does not reset.
- Add a temperature alarm that sends an SMS if the incubator drifts out of range.
Lighting
Layers are often given about 16 hours of light a day, which means lights before dawn and after dusk. LED poultry lights use a fraction of the power of old bulbs. Solar with a small battery covers lighting for most small and medium farms easily; switch to LEDs before sizing anything.
Brooding heat: the big load
Young chicks need warmth for their first two to three weeks. Electric heat lamps are simple but energy hungry: four 250 W lamps running day and night use about 24 kWh a day, costing about KES 680 a day at the domestic DC2 rate. Running that from solar would need about ten panels plus a large battery for the nights, which is rarely worth it for a load used only part of each cycle.
Better options for brooding:
- Insulate the brooder and use curtains or a smaller brooding area, so less heat escapes.
- Use gas, biomass or charcoal brooders where safe and well ventilated.
- Use electric heating plates instead of infrared lamps; chicks huddle under them and they use far less power.
- Time brooding with the weather: cold highland nights in June to August need the most heat.
Water and feed
Poultry drink a lot, and a small solar pump filling a header tank in daylight keeps drinkers supplied through outages. Feed mills and mixers can run from solar in the late morning. See our solar borehole pump article for pumping.
A typical small commercial farm
A farm with one incubator, LED lighting for a few thousand birds, a water pump and an office might need about 2 to 3 kW of panels and 5 to 10 kWh of battery, with brooding heat handled separately. The exact figures depend on the flock, the housing and how many hours the lights run.
Plan your farm's power
- Size the incubator battery with our battery backup guide.
- The free solar calculator estimates panels, battery and inverter for the farm's daytime and essential loads.
- For larger units, request an assessment covering lighting schedules, pumping and backup.