Sunlight Striking Earth’s Surface in One Hour Delivers Enough Energy to Power the World Economy for an Entire Year

Cape Breton Independent

Around the world, solar installations are growing by leaps and bounds on residential and commercial rooftops and in solar farms that can cover thousands of acres.

In April 1954, top scientists gathered in Washington, D.C., to hear something new: voice and music broadcast by a solar-powered radio transmitter. Scientists at Bell Labs in New Jersey were demonstrating their invention, the first practical solar cell, which was made of silicon. This breakthrough paved the way for the solar revolution taking place today on rooftops and in massive ground-mounted solar farms around the world.

solarSolar cells, also called solar photovoltaics or PV, powered U.S. satellites during the 1960s space race with the Soviet Union. But PV technology was still too expensive to be used for much else until the Arab oil embargo of 1973. Amid rising fears about energy security, governments and private firms poured billions of dollars into solar research and…

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