Hydraulic sizing
Static head, friction loss, drawdown and daily water requirement define the duty point.
Solar Water Pumping
Solar Water Pumping Systems
A solar water pumping system runs a surface or submersible pump directly from solar modules through a pump controller, delivering water during daylight hours without diesel or grid supply.
A solar water pumping system runs a surface or submersible pump directly from solar modules through a pump controller, delivering water during daylight hours without diesel or grid supply.
Overview
Solar pumping is sized on hydraulics, not on roof area: total dynamic head, required daily water volume, borewell or source characteristics and the delivery point determine pump and array size.
GLS supplies and installs solar pumping systems with array mounting, controller, cabling, protection and dry-run safeguards, along with commissioning and performance checks.
Who it is for
- Farms and agricultural landholdings
- Horticulture and plantation irrigation
- Rural and institutional water supply
- Sites with no grid connection or costly diesel pumping
How it works
Pump and controller
AC pump with VFD controller or DC pump, selected for the duty point and source depth.
Array and structure
Module array sized to run the pump across the usable solar day on a fixed or seasonally adjustable structure.
Protection
Dry-run protection, overload and surge protection, and proper earthing for pump and array.
Key benefits
- No diesel or grid electricity cost for pumping
- Operation during daylight with minimal attention
- Low moving-part maintenance compared with diesel sets
- Workable at sites without any grid connection
Technical considerations
- Output variability
- Flow follows available sunlight, so daily delivery varies across seasons and weather. Storage tanks buffer this where continuous supply is needed.
- Source data
- Borewell yield, static water level and drawdown must be known; sizing without them risks pump damage or shortfall.
- Subsidy schemes
- Government support for solar pumping changes periodically. We will tell you only what the prevailing scheme currently provides at the time of your enquiry, rather than quoting outdated figures.
Process
01 — Consultation
We understand your load profile, electricity bill, tariff category and objective.
02 — Site Assessment
Roof or land survey covering area, orientation, shadow, structure and electrical infrastructure.
03 — System Design
Capacity sizing, layout, module and inverter selection, cable and protection design.
04 — Proposal & Planning
Detailed scope, bill of materials, indicative generation and commercial proposal.
05 — Engineering & Installation
Structure fabrication and erection, module mounting, DC and AC works, earthing and protection.
06 — Testing & Commissioning
Insulation, polarity, string current, earthing and inverter commissioning checks.
07 — Grid Integration / Handover
Coordination for net-metering or grid approval where applicable, then documented handover.
08 — Monitoring & O&M
Generation review, scheduled cleaning and inspection, and corrective maintenance.
Components we use
Solar Water Pumps
Pump sets powered directly by solar modules through a controller, for irrigation and water supply without diesel or grid power.
Solar Panels (PV Modules)
Photovoltaic modules that convert sunlight into DC electricity — the generating element of every solar system.
Solar Mounting Structures
The structure holds modules at the designed tilt and orientation and transfers wind and dead loads safely into the roof or ground.
Project examples
GLS has completed 300+ projects across Tamil Nadu. Case studies in this category are being documented with client approval, and we publish only what owners have confirmed may be shared. Ask us for references relevant to your category and we will send what has been approved for disclosure.
Projects & Case StudiesFrequently asked questions
Will a solar pump work on cloudy days?
It will run at reduced output when irradiance is low and may stop in heavy cloud. Where supply must be continuous, systems are designed with storage tanks sized for such days.
Do solar pumps need batteries?
Usually not. Most systems pump directly into a tank during the day, which is cheaper and simpler than storing electricity in batteries.
Size a Solar Pumping System
A short conversation about your consumption and site is usually enough for us to tell you what is worth doing.