hydroelectric generators are designed to be 12, 24 or 48 volt battery chargers, operating from a relatively small volume of water. They charge batteries whenever water is flowing 24 hours a day and the power can be drawn from the battery as needed. As little as 100 gallons per minute (GPM) falling 10 feet through a pipe, or 5 gallons per minute falling 200 feet through a pipe, can supply enough power to run a small household.
In areas where there is a long rainy season and a mountain stream that can be used, a small hydro system can work well with solar modules, both charging the same battery. When it is rainy and the solar modules are putting out less power, the hydroelectric system will be at its peak. By contrast, typical AC power hydro-electric systems are designed to deliver ready-to-use 120/240 VAC power and are not practical for most people. These large hydros need a constant water supply large enough to supply the peak power output that will be required, (usually a minimum of several thousand watts), and require hundreds or even thousands of gallons per minute, depending upon the pressure available. But these large systems can be cost effective for those who have the water. For more info or purchase visit:http://www.alibaba.com/showroom/micro--hydroelectric-generator.html
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