User:Rps.pramod/sandbox

solar energy radiant light and heat from the sun.solar heating,solar photovoltaic,solar thermal electricity,solar architecture are the ones which can contribute this earth with renewable energy.depending on the way solar energy is captured,converted and distributed it is characterized as passive or active solar.use of photovoltaic panels and solar thermal collectors to harness the energy are the steps generally followed for active energy. International Energy Agency says, "the development of affordable, inexhaustible and clean solar energy technologies will have huge longer-term benefits.

ENERGY FROM SUN: The Earth receives 174 petawatts (PW) of incoming solar radiation (insolation) at the upper atmosphere. Approximately 70% is absorbed by clouds, oceans and land masses. The spectrum of solar light at the Earth's surface is mostly spread across the visible and near-infrared ranges with a small part in the near-ultraviolet.The amount of solar energy reaching the surface of the planet is so vast that in one year it is about twice as much as will ever be obtained from all of the Earth's non-renewable resources of coal, oil, natural gas, and mined uranium combined. Yearly Solar fluxes & Human Energy Consumption Solar 	                       3,850,000 EJ        Wind 	                        2,250 EJ        Biomass 	                3,000 EJ        Primary energy use (2005) 	487 EJ        Electricity (2005) 	        56.7 EJ