Solar Powered Water Pumps
Pumping water is a universal need around the world and the use of photovoltaic power is increasing for this application. PV powered pumping systems offer simplicity, reliability, and low maintenance for a broad range of applications between hand pumps and large generator driven irrigation pumps. The solar PV powered water-pumping system (DC Surface suction, DC floating, and DC or AC submersibles) can offer a veritable panacea to the problem of finding power to pump water for irrigation. The system for solar pumping depends on the nature of the well: deep well, bore well, open well etc.
Regardless of the type of pump used, water is usually stored in a tank or reservoir for use at other times. Most pumping systems do not include batteries for on-demand water. However, batteries are sometimes used in systems where pumping time must be controlled because of low water demand or low source capacity.
The problems with the grid-powered pumping systems are:
Demand for electrical energy far outstrips supply, and the gap continues to widen
It is proving increasingly difficult for the government to continue subsidizing the rising costs of generation, transmission and distribution losses, pilferage, etc. The loss of revenue to the government is colossal.
The costs and tariffs of electricity continue to rise – the marginal farmer is unable to pay for the electricity)
Grid power is unreliable and of poor quality, often leading to motor burnouts at the tail end.
In a coal-fired thermal generating station, 1 kWh of electrical energy generated translates to 11.2 tonnes of carbon dioxide emission a year.
Village Water Supply
Agriculture related use
High value crops