Solar Energy

Solar energy, radiant light and heat from the sun, harnessed by humans since ancient times with a series of constantly evolving technologies. Solar energy technologies include solar thermal, photovoltaics, solar thermal and solar architecture and power, which is a significant contribution to solving some of the most pressing problems of the world before now can do.

Solar technologies are broadly classified into passive use of solar energy or active solar energy as a function of the way they capture, convert and distribute solar energy. Active solar techniques include the use of photovoltaic panels and solar thermal collectors to harness the energy. Passive solar techniques include the orientation of a building to the Sun, selecting materials with favorable thermal mass or light dispersing properties, and designing spaces that naturally circulate air.

In 2011, said the International Energy Agency, that "the development of affordable, inexhaustible and clean solar energy technologies have huge long-term benefits. It states the security of energy supply increased by reliance on an indigenous, inexhaustible and especially import-independent improve resource sustainability, environmental impact, reduce the cost of curbing climate change, and keep prices for fossil fuels is lower than usual these benefits overall are therefore the additional cost of the incentives for early deployment should be considered in learning investments; .. they have to be spent and must be widespread, "