A solar tubewell replaces diesel or electric pumps with solar-powered water pumping. It eliminates recurring fuel costs permanently. For Pakistani farmers spending PKR 15,000-40,000 per month on diesel for a single tubewell, solar conversion pays for itself in 2-3 years and then delivers free water extraction for the next 20+ years.
A solar tubewell is a water pumping system powered entirely by solar panels. It extracts groundwater for irrigation, livestock, and agricultural use without any grid connection or diesel generator. The system operates during daylight hours, pumping water when the sun is available. No batteries are needed. The pump runs directly from solar generation, making the system simple, low-maintenance, and cost-effective.
Solar tubewells are now the fastest-growing segment of solar adoption in rural Pakistan. Farmers across Punjab, Sindh, and Balochistan are replacing diesel engines that consume thousands of rupees in fuel every month with systems that have zero operating cost after installation.
The system has three main components:
• VFD (Variable Frequency Drive): Converts DC power from the panels into AC power at the correct frequency for the pump motor. The VFD adjusts pump speed based on available solar power, running the pump faster during peak sun and slower during morning and evening hours.
• Submersible pump: Installed inside the borehole. Draws water from the aquifer and pushes it to the surface for irrigation channels, storage tanks, or drip systems.
No batteries, no inverter, no grid connection. The VFD handles everything between the panels and the pump. This simplicity is what makes solar tubewells so reliable in field conditions.
| Pump Size | Solar Array Required | Total System Price (PKR) | Typical Water Output |
|---|---|---|---|
| 5 HP | 5-7 kW | 8 – 12 Lakh | 15,000-20,000 gallons/day |
| 10 HP | 10-14 kW | 15 – 22 Lakh | 30,000-45,000 gallons/day |
| 15 HP | 15-20 kW | 22 – 30 Lakh | 50,000-70,000 gallons/day |
| 20 HP | 20-28 kW | 28 – 40 Lakh | 70,000-100,000 gallons/day |
| 30+ HP | 30-40+ kW | 40 – 60 Lakh | 100,000+ gallons/day |
Prices include solar panels, VFD, submersible pump, mounting structure, wiring, and installation. The exact cost depends on water table depth, pipe length, and pump brand. Deeper water tables require more powerful pumps and larger solar arrays.
Both federal and provincial governments have launched solar tubewell subsidy programs to reduce agricultural diesel dependency:
• Punjab Solar Tubewell Scheme (Phase 1 and 2): Subsidizes solar tubewell installation for farmers in Punjab. Covers a significant portion of system cost. Applications are processed through the Punjab Agriculture Department. Phase 2 expanded coverage to more districts and higher HP systems.
• Sindh Solar Tubewell Scheme: Targets farmers in Sindh province with subsidized solar pumping systems. Managed through the Sindh Energy Department.
Eligibility typically requires land ownership documentation, existing tubewell registration, and an active agricultural operation. Application processes vary by province. Contact your local agriculture office or visit the respective provincial government portal for current application status and deadlines.
The economics of solar tubewells are straightforward. A 10 HP diesel pump consumes approximately PKR 15,000-40,000 in fuel per month depending on usage hours and diesel prices. That is PKR 1.8-4.8 Lakh annually in fuel alone, not counting engine maintenance, oil changes, and breakdowns.
A solar tubewell eliminates this cost entirely. At the midpoint of PKR 18 Lakh for a 10 HP solar system and PKR 3 Lakh in annual diesel savings, the payback period is 2-3 years. After payback, the system runs free for 20-25 years. The total lifetime savings exceed PKR 50 Lakh on a single tubewell.
For farms running multiple tubewells, the aggregate savings justify the investment in the first year of operation.
• Water table depth: Deeper water tables require more powerful pumps and larger solar arrays. Get a borehole survey before sizing the system. A 200-foot depth needs a very different system than a 50-foot depth.
• Daily water requirement: Calculate how many gallons per day your crops need. This determines pump size. Over-sizing wastes money. Under-sizing leaves crops under-irrigated.
• Land area for panels: A 10 HP system needs approximately 700-900 sq ft for the solar array. Panels are typically ground-mounted near the tubewell. Ensure the area is free from shading by trees or structures.
• Seasonal variation: Solar output peaks in summer when irrigation demand is highest. Winter output drops 20-30%, but irrigation demand also decreases. The system naturally aligns with crop water needs.
• Pump and VFD quality: The VFD is the most critical component. Low-quality VFDs fail within 1-2 years in field conditions. Insist on industrial-grade VFDs from brands like ABB, Schneider, or Invt.
We design complete solar tubewell systems engineered for Pakistani agricultural conditions. Our approach includes proper VFD integration with industrial-grade drives, panel mounting designed for open-field wind loads, and submersible pump selection matched to your specific borehole depth and water requirement.
SOL AI monitoring extends to our agricultural installations. It tracks pump run hours, daily water output estimates, and solar generation in real time. This data helps farmers optimize irrigation schedules and detect pump performance issues before they become failures.
We handle everything from site survey and borehole assessment to installation and commissioning. Our engineering team has deployed solar tubewell systems across Punjab and Sindh for farms ranging from 5 to 100+ acres.
