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06.01.2015
A Guide to Solar Powered Water Pumping,Hydro Power,micro hydro power,hydro turbine, hydro power generator.
PV powered water pumping systems are similar to any other pumping system, only the power source is solar energy. PV modules on the market today are guaranteed by manufacturer's from 10 to 20 years, while many of these should provide over 30 years of useful life. In terms of average unit energy costs calculated using traditional accounting techniques, PV generated electricity cannot yet compete with efficient conventional central generating plants. Like any such commodity, the total purchase price of a PV system is based on all inherent costs of producing the individual components, transporting these to the site and installing them. For further information on enabling technologies, see the RISE Enabling Technologies page. People should be aware of the practical limitations of PV systems and major areas are discussed below. Assessment of the economic viability of PV pumping systems in comparison to diesel pumping systems indicate that the limit for PV pumping is 5 kWp.
PV pumping is a mature technology and problems are largely due to infrastructure and planning.
Currently photovoltaic technology is suitable for remote site applications that have small power needs, or small power consuming applications even where the grid exists.
Please visit our other Hydro web pages for further information on estimating your potential, feasibility studies, abstraction licensing, system design and installation.
We also can supply solar water heaters, solar power system, LED Street lights, other LED Lights, heat pumps, wind turbines. Since the need for water is greatest on hot sunny days the technology is an obvious choice for this application.


Accordingly, the vast majority of PV installations to date have been for relatively low-power applications in locations, which do not have ready access to a mains electricity grid. There may also be associated costs of designing and engineering the system and purchasing land - particularly for large-scale or one-off projects (IEA, 2002).
Also the high investment cost of PV pumping systems is a major factor to slowed expansion of the market. Technicians and buyers are often unfamiliar with PV technology, and when pumps in remote locations do break down, there may be a lack of servicing, spare parts, or trained manpower to administer them. However the falling prices of PV's over time will make many more applications of photovoltaics economically competitive in the future. Pumping water using PV technology is simple, reliable, and requires almost no maintenance. PV water pumping arrays are fixed mounted or sometimes placed on passive trackers (which use no motors) to increase pumping time and volume. A well-designed PV system will operate unattended and requires minimum periodic maintenance. In such cases, PV has been selected because it offers a secure and reliable power supply, and is often the cheapest power option. Although the life cycle cost of PV is often less than diesel or petrol-powered pumps, the investment cost of purchasing a PV pump is usually higher than that of diesel pumps. In developing countries they are used extensively to pump water from wells and rivers to villages for domestic consumption and irrigation of crops. Agricultural watering needs are usually greatest during sunnier periods when more water can be pumped with a solar system. AC and DC motors with centrifugal or displacement pumps are used with PV pumping systems.


PV conversion efficiencies and manufacturing processes will continue to improve, causing prices to gradually decrease, however no dramatic overnight price breakthroughs are expected (El Paso Solar Energy Association, 2007).
Because PV only supplies water when the sun is shining, there is usually a need to build storage tanks for when the sun is not shining. Such a system would cost approximately $ 4,500 for hardware excluding storage tank and pedestal. A typical PV-powered pumping system consists of a PV array that powers an electric motor, which drives a pump. PV powered pumping systems are excellent for small to medium scale pumping and there are thousands of agricultural PV water pumping systems in the field today throughout the world.
The most inexpensive PV pumps cost less than $1,500, while the large systems can run to over $20,000. The water is often pumped from the ground or stream into a storage tank that provides a gravity feed.
For an indication of the global solar resource available for photovoltaic applications, see Figure 2.
Well installed quality PV water pumping systems can provide over 20 years of reliable and continuous service (El Paso Solar Energy Association, 2007).
PV powered pumping systems are widely available from agricultural equipment suppliers and they are a cost-effective alternative to agricultural wind turbines for remote area water supply.



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