Solar Irrigation System
Reduce Water • Reduce Pump Power • Reduce Solar Cost
Most solar irrigation projects become expensive for one reason:
The pump is sized for peak flow and high pressure — without zoning and efficiency planning.
PKYDrip designs solar irrigation from system logic first, so you can use a smaller pump, smaller inverter, and smaller PV array — without sacrificing irrigation performance.
Quick Answer: What Determines Solar Pump Size?
Your sizing depends on 5 numbers:
- Area (ha / acres)
- Peak net water need (mm/day)
- Irrigation method efficiency (flood / sprinkler / drip)
- Available irrigation hours/day (solar window)
- Zoning / rotation (how many zones run sequentially)
Rotation reduces peak flow & peak power.
Efficiency reduces total daily water volume.
Lower head reduces power directly.
🔵 Step 1 — Calculate Your Required Pump Flow (Interactive)
Calculate My Solar Pump Flow →
3 Real Examples (10 ha / 50 ha / 100 ha)
Reference: 1 mm on 1 ha = 10 m³ water.
Example A — 10 ha (Typical Solar-Friendly Design)
Assumptions:
- Peak net need: 6 mm/day
- Method: Sprinkler (Ea 0.75)
- Available irrigation: 10 h/day
- Zones: 4
- Head: 35 m
Results (approx):
- Net water/day: 10 × 6 × 10 = 600 m³/day
- Gross water/day: 600 / 0.75 = 800 m³/day
- Avg flow needed: 800 / 10 = 80 m³/h
- With 4-zone rotation: 20 m³/h peak
Example B — 50 ha (Commercial Farm)
Assumptions:
- Peak net need: 7 mm/day
- Method: Center pivot / linear (Ea 0.82)
- Irrigation: 10 h/day
- Zones: 6
- Head: 45 m
Results (approx):
- Net: 50 × 7 × 10 = 3500 m³/day
- Gross: 3500 / 0.82 ≈ 4268 m³/day
- Avg flow: 4268 / 10 ≈ 427 m³/h
- With 6-zone rotation: ~71 m³/h peak
Example C — 100 ha (Large-Scale)
Assumptions:
- Peak net need: 8 mm/day
- Method: Sprinkler (Ea 0.75)
- Irrigation: 12 h/day
- Zones: 8
- Head: 45 m
Results (approx):
- Net: 100 × 8 × 10 = 8000 m³/day
- Gross: 8000 / 0.75 ≈ 10667 m³/day
- Avg flow: 10667 / 12 ≈ 889 m³/h
- With 8-zone rotation: ~111 m³/h peak
Packages
1) Basic Solar Irrigation (Farm Owner Friendly)
- Pump ON/OFF control + protection
- Zoning / rotation scheduling
- Simple operation (no complex tuning)
2) Solar Optimized System (Recommended)
- Solar-friendly pump cabinet logic
- Pressure stability plan
- Tank level / dry-run protection
- Rotation planning as standard
3) Pro / Engineering System
- Pressure + flow feedback
- Remote monitoring + logs
- Multi-mode irrigation scheduling
- Upgrade-ready for fertigation and sensors
Request a Solar Irrigation Proposal (Fast)
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Engineer Section (Deep Tech) — head, power, protection, and solar optimization
Head (H) Quick Guide
Head includes:
- Static lift (water level to highest point)
- Pipe friction loss (mainline + branches)
- Working pressure at sprinklers / drippers
For solar-first projects, lowering head is as important as lowering flow.
Protection Logic (Recommended)
- Tank level switch (float): prevents dry-run
- Pressure sensor: confirms stable pressure
- Flow sensor: detects leaks / blockage / dry-run