Lots of conservation minded folks are enjoying newer technologies that reduce their dependence on electricity or natural gas while saving money. In between 15% to 20% of a typical home’s energy expense is hot water. By reducing or replacing your “on the grid” electric or gas hot water heating system. One way to reduce the cost of energy in your home or business is to buy a water heater that is newer and more efficient than your current heater. Another option discussed here is to build a solar water heater. The cost of building your own solar system is low enough that the payback period is amazingly short. It is also the simplest and cheapest investment in renewable energy. This investment also increases the value of your home or commercial property.
All solar heaters are not created equal, but some things are common. All units retain heat in a solar collector, transfer heat to a water supply, and store the heated water. All units have zero or no ongoing operating costs, making it reasonable to recoup your investment more quickly. There is also a substantial environmental benefit in that you won’t be burning gas or using electric. This is particularly true in districts with a luxury utility rate where the more you use the higher your rates are. This is another reason to not to buy a water heater.
More information at http://buywaterheater.org