“How well we communicate is determined not by how well we say things, but how well we are understood.
Cogeneration is a more efficient use of fuel because otherwise wasted heat from electricity generation is put to some productive use. ... Combined cooling, heat and power systems can attain higher overall efficiencies than cogeneration or traditional power plants.
Hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion including waterfalls, rivers, etc... An energy form thats been used for millennia, Petawatt is focused on this plentiful, renewable resource.