Energy efficiency facts

Energy efficiency is defined as using less energy to provide the same level of energy service. Some examples of energy efficiency are better insulation of buildings, using energy saving light bulbs, buying cars with better gas mileage. Energy efficiency is achieved primarily by means of a more efficient technology or processes rather than by radical changes in individual behavior.Energy Star is

Solar collector facts

Solar collectors transform solar radiation into heat and then transfer that heat to a medium (water, solar fluid, or air). The term is applied to solar hot water panels, but may also be used to denote more complex installations such as solar parabolic, solar trough and solar towers.Solar hot water systems use sunlight to heat water. In low geographical latitudes (below 40 degrees) from 60 to 70%