We at GW Silver are aware of how valuable your time is, so let us open the door to a fast friendly Shopping experience. Cordially, Graeme Watson Owner of the silver manufacturer GWSilver.com in Taxco, Guerrero; Mexico.
12.2 trillion watt-hours converts to 12,211 gigawatt-hours, and based on 8,760 hours per year, and 197 million square miles of earthâs surface (including the oceans), the earth receives about 274 million gigawatt-years of solar energy, which translates to an astonishing 8.2 million âquadsâ of Btu energy per year.
100% of the energy entering earthâs atmosphere comes from the sun. ~50% of the incoming energy is absorbed by the earthâs surface i.e. the land and oceans. ~30% is directly reflected back to space by clouds, the earthâs surface and different gases and particles in the atmosphere (the earth's albedo is 0.3 on average).