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Any application that avoids the usage of batteries would be cost effective; since battereis are really expensive compare to other elements. The invention of grid-connecte ... See More
solar water heater is the best to secure money in short time, because many reasons one of them is the installation cost which is low comparing with other systems and the ... See More
On grid systems benefit customer by providing savings in terms of electricity bill. These savings provide for the payback for the initial cost of these systems. Based on ... See More
solar heater as its r.o.i. is around3-5 years.