A Golden Thread

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A Golden Thread

• History of Renewable Energy
• Introduction to Renewable Energy Technologies

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1876 - PHOTOELECTRIC DREAMS William Grylls
Adams, who, with his student, Richard Evans Day,
discovered in 1876 that a solid material -
selenium - produced electricity when exposed to
light. Today, we refer to electricity produced
directly from light as the photovoltaic effect.
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1956 Searching for Applications During the first
years after the discovery of the silicon solar
cell, its prohibitive cost kept it out of the
electrical power market. Desperate to find
commercial outlets for solar cells, novelty items
such as toys and radios run by solar cells were
manufactured and 1956 Searching for
Applications During the first years after the
discovery of the silicon solar cell, its
prohibitive cost kept it out of the electrical
power market. Desperate to find commercial
outlets for solar cells, novelty items such as
toys and radios run by solar cells were
manufactured and
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With its wing covered entirely by solar cells,
the Pathfinder has flown higher than any other
aircraft except for the famous spy plane, the
Blackbird.
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Cylindrically shaped metal water tanks, placed in
glass-covered boxes, covered the roofs of almost
four million Japanese homes by 1969.
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Today, more than 90 of Israeli households own
solar water heaters.
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The solar-heated Rose Elementary School in Tucson
Arizona. It obtained over 80 of its heat from
solar energy for an entire decade, beginning in
1948.
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Aerial view of the Village Homes subdivision
built in the late 1970s in Davis, California. The
layout of the subdivision allowed every house to
face the winter sun.
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