Renewable energy sources produce no greenhouse gases and their reserves are inexhaustible. Why not use the sun to heat your water and your house? People often mistakenly believe that solar heating only works in tropical regions. This is incorrect-it is just as economical to choose solar power at our latitudes. Depending on the situation, energy from the sun can supply 40% to 80% of hot water needs, and 20% to 40% of heating needs. A solar hot water heater may allow a 40% to 70% reduction of energy consumption during the summer.
Various financial subsidies for renewable energies are available, especially when constructing on a large scale-find out about them. Even without subsidy, a solar panel installation pays for itself in about 7 to 9 years on average, while its life is generally longer than 25 years. The sunlight is free, courtesy of Mother Nature.
-Abrams, “365 Ways To Save The Earth”, 2008