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Old 04-24-16, 07:24 AM   #9
Kramer
Lurking Renovator
 
Join Date: Apr 2016
Location: South Carolina
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Batteries seem to be the most expensive and the least reliable part of an off grid solar system. It might be more practical to look for individual loads that can be taken off grid without batteries or expensive grid tie inverters. Well pumps, pool pumps, Hot water and HVAC systems seem like good candidates. Each could have its own set of panels, motor control system and if needed, energy storage other then batteries. Then, eventually the lighting, and other low wattage loads could be put on a small battery bank with the grid as a backup charging option. Save the mains power for heavy, occasional loads (e.g. vacuum cleaners, power tools)
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