| Alternative, Renewable energy (sources) or RES capture their energy from existing flows of energy, from on-going natural processes, such as sunshine, wind, wave power , flowing water (hydropower), biological processes.
The most common definition is that Efficient, Renewable energy is from a resource that is replaced by a natural process at a rate that is equal to or faster than the rate at which that resource is being consumed. Use these alternative energy sources to help you create an energy efficient home.
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