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How about Solar Resources?

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Solar energy is sunshine! Map of Concentrating Solar Resources in the United States showing the greatest concentration mostly in the areas from western Texas westward to California and northward to Washington, Idaho, Montana and the western parts of the Dakotas; with moderate concentrations in the lower southern tier of the country from Florida through Maryland.

Map of Photovoltaic Solar Resources in the United States showing the greatest concentration mostly in the areas from western Texas westward to California and northward to Oregon, Idaho, and Wyoming.

World Map of Solar Resources showing the greatest concentration in the southern portion of the Northern Hemisphere, South America, Africa, the Middle East, southern Eurasia, the South Pacific, and Australia

The amount of solar energy that the earth receives each day is many times greater than the total amount of energy consumed around the world. However, on the surface of the earth, solar energy is a variable and intermittent energy source. The amount of sunlight and the intensity of sunlight varies by location. Weather and climate conditions affect the availability of sunlight on a daily and seasonal basis. The type and size of a solar energy collection and conversion system determines how much of available solar energy can be converted into useful energy.

Solar thermal collectors

Low-temperature solar thermal collectors absorb the sun’s heat energy to heat water or to heat air for heating in homes, offices, and other buildings.

Concentrating collectors

Solar Basics 3

Source: NREL

Concentrating solar energy technologies use mirrors to reflect and concentrate sunlight onto receivers that collect solar energy and convert it to heat. This thermal energy can then be used to produce heat or electricity with a steam turbine or a heat engine driving a generator.

Photovoltaic systems

Solar Basics 2

Source: NREL

Photovoltaic (PV) cells convert sunlight directly into electricity. PV systems can range from systems that provide tiny amounts of electricity for watches and calculators to systems that provide the amount of electricity used by hundreds of homes.

Solar Basics

Source: UNEP

Hundreds of thousands of houses and buildings around the world have PV systems on their roofs. Many multi-megawatt PV power plants have also been built. Covering 4% of the world’s desert areas with photovoltaics could supply the equivalent of all of the world’s electricity. The Gobi Desert alone could supply almost all of the world’s total electricity demand.

Source: www.eia.gov

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