One of the largest solar powered water pumping systems in the United States has been installed to pump 10,000 gallons a day.JOSHUA TREE NATIONAL PARK, California, US, 2001-09-24 [SolarAccess.com] SunWize Technologies installed the 7.2 kW solar pumping system with an additional 300 watt system operating two small water treatment pumps and a light in the pumphouse. The system replaces a diesel generator that had been powering the pumping system, which has a head of 400 feet. The PV array powers a 5 hp, 230 volt, 3 phase standard submersible pump with a 80,000 gallon storage tank, to serve a campground with an average 2,500 gallons per day. The solar controller pumps water into the storage tank without need for batteries, and a propane generator is used as backup in the event of a low water situation or for fire fighting needs. Photovoltaic water pumping is a preferred power source in California’s remote environment, which is one of the sunniest locations in the U.S. SunWize claims its system design increases reliability, lowers long term operational costs and greatly reduces emissions to help the National Park Service meet its goal of protecting the environment and serving the public.