Solar Systems Applications

WorldWater’s principals and engineers have a proven track record of designing and building solar water pumps and purification platforms for agribusiness, water management and other commercial/industrial applications.

WorldWater& Solar Technologies has developed a portfolio of patents on power management and interconnection technology that enables solar energy to drive pumps and motors up to 600 horsepower.

These systems can operate off-grid or in conjunction with the grid or diesel generation. Our unique off-grid solar water pumping expertise has been utilized in farms, ranches, dairies and water agencies across the United States and overseas.

WorldWater’s VariMax™ technology enables users to run high-load applications from solar power in a variety of configurations while realizing maximum productivity and associated cost benefits. These proprietary solar platforms operate automatically, turning on and off every day for irrigating fields, pumping water for livestock or distributing water. They are field-proven to be reliable and hassle-free with no need for regular maintenance.

Key features include:

Seley Ranches

In September 2004, WorldWater & Solar Technologies completed the installation of the worlds largest solar-powered irrigation system.

Seley Ranches is nestled between the Santa Rosa and Palomar Mountains in San Diego County – a premium grower of citrus fruit, known for its trademark “Seley Red” grapefruit. WorldWater’s installation of the 267 kW PV VariMax™ system is capable of driving a 200 hP pump – making it the largest solar-powered irrigation system in the world at the time.
When I realized that the grid had been cut off and a 200 hP pump, using only the energy from the sun above, was pumping 1,000 gallons of water a minute from a depth of 300 feet…well, that was a very powerful moment. Jim Seley, Owner, Seley Ranches

Valley Center Municipal Water District

The 1.1 MW PV system provides 2.1 million kWh per year of electricity for the district, offsetting up to 20% of the electricity required by their largest pumping station.
This will provide long-term financial benefits for our agency and community, as well as a reduced carbon production environment – thus double green. Gary Arant, General Manager, Valley Center Municipal Water District


WorldWater, in partnership with KarmSolar of Egypt, have designed, engineered and executed a pilot project which involves two solar powered irrigation systems in Egypt.

One system is at a 70 acre farm near Wadi El Natrun, where a 135 KW array drives a 150 horsepower pump to draw water from a depth of 200 meters. The other farm, near Farafra Oasis, is 200 acres, where a 200 KW array drives a 250 hP pump. These farms are currently powered by diesel generators.
Using our proprietary inter-connection technology, we can run such large horsepower pumps that are off-grid, as well as grid-connected, very efficiently from clean solar energy. These pilot projects are a game changing proposition to agro-businesses everywhere. Dr. Davinder Sethi, Chief Operating Officer of WorldWater

We expect next year to be doing between 20,000 acres to 40,000 acres in the desert. We’ll be first converting diesel powered irrigation to solar, and then taking desert land and converting it into arable land. Bear in mind that the Government of Egypt’s plan is to increase the desert farm lands by about 2.5 million acres over the coming five years. Ahmed Zahran, CEO, KarmSolar.

Idyllwild Water District

Located in the San Jacinto Mountains near Palm Springs, the Idyllwild Water District (IWD) provides approximately 100 million gallons of water per year to its customers over a 2,500 acre service area.

The facilities operated by the IWD include 23 wells, a water treatment plant, a storage and distribution system, a wastewater treatment plant and a sewage collection system. Due to ever increasing electricity costs and the unreliability of the electrical grid, the IWD sought alternative means of power to pump water and increase overall system reliability.

WorldWater designed and built a 44.1 kWDC PV VariMax™ power system. The PV VariMaxTM system is configured in two sub-arrays for running Well and Transfer pumps (7) and the Water Treatment Plant. During daytime operation of pumps and motors, power is supplied by the PV system first and any additional power required is provided by the electric utility. In the event power is lost from the electric utility and the pump motor or non-motor loads require power, the PV system will supply solar power directly to the VariMax™ controllers to operate the loads. The Backup Mode is instant, automatic and requires no user intervention.

WorldWater’s custom solar solution will save the IWD approximately 70% of its electrical costs and significantly enhances IWD’s operational reliability.

Idyllwild Water District experienced a good joint cooperative solar project with WorldWater. WorldWater is an innovative, pioneering company with integrity who has shown us that they will do whatever it takes to complete the project…I would recommend using WorldWater for building and custom designing solar systems to meet the different operation requirements for both water and wastewater districts. Terry Lyons, General Manager, Idyllwild Water District

Denver International Airport

This 2 MW ground mounted single-tracking solar array system is located at the entrance to the main terminal of the Denver International Airport in Colorado. The system generates over three million kWh per year.

San José Costa Rica, Alajuela, Las Vueltas de la Guacima
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