Wikipedia, Renewable Energy
Solar energy can be used for either heating or for conversion to electricity. Photovoltaic systems convert light energy into electricity while Concentrating Solar Power (CSP) systems use a series of mirrors to focus the suns energy to generate heat which is used to generate electricity with a steam generator. Solar heating systems are used to heat water or store and heat homes and buildings. Solar Power is primarily used in small applications, but has potential for large scale operations in desert climates.
Supporting Websites
Department of Energy, EERE Environmental Protection Agency, Clean Energy National Renewable Energy Association International Energy Agency Union of Concerned Scientists American Wind Energy Association Science Daily Renewable Energy Access.Com
With wind power, the remoteness of the best “windy sites” adds to the transmission costs to population centers. Furthermore, local opposition to the transmission line routes across pristine natural areas has caused some to oppose this aspect of wind power.
Wind is also intermittent, and therefore cannot be used exclusively. Nearing populated areas, there is also concerns about noise and aesthetics. Local opposition groups have complained about the proposed erection of wind turbine towers near their neighborhoods. In particular, the Cape wind energy project on Nantucket Sound has faced delays as a result of local opposition.
Solar power’s main disadvantage is cost; solar cells and panels are very expensive. Smaller roof top applications by home owners have a high initial investment and can take a long time to pay out. Local neighborhood deed restrictions may prohibit solar roof panels.