The biggest advantage of DC electricity is that it is easier to store than AC electricity, especially on a small scale. Storing electricity when it is made, for use later when it is needed, is a critical CONCEPT for a hybrid INDEPENDENT power plant. When electricity is stored we can use it when we need it, and storing it increases its density, so we can take as much power as we want to OPERATE high-powered equipment. When we store electricity we can turn the generator set off most of the time which saves fuel, and we can use electricity when our renewable sources such as solar CELLS are not providing electricity. The best way to store electrical energy for relatively small-scale applications is to use rechargeable storage batteries. We can RETRIEVE electricity from a storage battery bank silently, efficiently, and immediately when we need it. Storage batteries require DC electricity, so to get the advantages of storing electricity in a storage battery bank, we must generate DC electricity.