SOLAR CHICKEN COOP
One panel, zero effort. Automatic door, lights, fan, and heated water — your flock runs itself.
One panel, zero effort. Automatic door, lights, fan, and heated water — your flock runs itself.
A single 100W solar panel powers everything your chicken coop needs: an automatic door opener (timer or light-sensor), interior LED lighting for winter egg production, a small ventilation fan for summer heat, and a heated water bowl to prevent freezing in winter. Solar keeps chickens safe and comfortable with zero daily effort and zero electricity cost.
The overlap between solar buyers and backyard chicken keepers is enormous — both groups value self-sufficiency, reducing costs, and practical DIY projects. A solar coop eliminates the daily chore of opening/closing the door at dawn and dusk, keeps egg production up during short winter days (chickens need 14+ hours of light), and prevents the #1 winter chicken problem: frozen water. All from a single panel that pays for itself in one season of not running extension cords.
Mounts on the coop roof or a nearby post. 100W is more than enough for this low-draw system. Renogy and ECO-WORTHY make reliable budget options.
For this simple, low-power system, a basic PWM controller works fine and saves money vs MPPT. The Renogy Wanderer 10A is a popular choice.
Stores enough power to run the door opener and lights overnight. 20Ah is plenty for this low-draw system. LiFePO4 handles cold weather better than lead-acid. A small unit like the Ampere Time 12V 20Ah fits neatly inside the coop.
The star of the build. Light-sensor models open at dawn and close at dusk automatically. Timer models let you set exact hours. The ChickenGuard and Happy Henhouse brands are well-reviewed. Most run on 12V or have battery options you can wire to your solar system.
Extends "daylight" hours inside the coop during winter to keep egg production up. Chickens need 14+ hours of light for consistent laying. A timer-controlled warm white LED strip on the ceiling does the job. Use a small 12V timer to turn lights on at 4am and off at sunrise.
Moves hot air out during summer. A small 12V brushless fan (80mm–120mm computer fan works) mounted near the roof peak exhausts heat. Draws almost nothing — can run all day on solar.
Prevents frozen water. Thermostatically controlled — only draws power below 35°F. Some models run on 12V; others need a small inverter. This is the highest-draw component, so it is optional depending on your climate.
Lighter gauge than the Blackout Box since loads are smaller. 14 AWG handles everything here. Inline fuse on the positive battery cable.
Attach the 100W panel to the coop roof (angled toward south) or on a nearby post/fence. Use Z-brackets or L-brackets. Run the panel cable through a weather-sealed entry point into the coop's utility area (a small corner shelf or mounted box where your electronics live).
Mount the charge controller on the inside wall. Connect the battery to the controller's battery terminals, then connect the solar panel input. The controller's display should immediately show incoming solar watts. Place the LiFePO4 battery on the shelf in a weatherproof container or bag — off the ground to avoid moisture.
Follow the door opener manufacturer's instructions — most mount above the door frame with the motor pulling a guillotine-style door via a string or chain. Wire the opener's power input to your 12V system (through the charge controller's load terminals or directly to the battery with a fuse). Set the light sensor mode or program your timer. Test by covering the sensor with your hand — the door should close within a few seconds.
Stick the LED strip along the ceiling. Wire it through a 12V timer set to turn on at 4am and off at natural sunrise (adjust seasonally). Mount the ventilation fan near the roof peak on an interior wall. For the heated water bowl, place it where chickens can access it and wire it to the 12V system (or to a small inverter if it requires AC). All connections go back to the battery through the fuse block.
That is it. Your chickens are now on solar. The door opens at dawn and closes at dusk. Lights extend winter laying. The fan keeps summer heat manageable. Water stays liquid in January. Your total daily draw is roughly 10–15Ah — the 100W panel replenishes that in 2–3 hours of sun, leaving plenty of margin even on cloudy days. Check on the system once a month — clean the panel, inspect wiring, and confirm battery charge level.