The History Of Solar Power
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The History of Solar Power
Introduction
With the rising cost of energy, many are turning to alternative sources. Among the most abundant is solar power, sourced from our sun. Here’s a glimpse into the fascinating history of harnessing solar energy.
Early Discoveries
The journey of photovoltaic energy began in 1876 when William Grylls Adams and his student, Richard Day, discovered that selenium could produce electricity when exposed to light. Although these early selenium cells were inefficient, they demonstrated that light, without heat or motion, could be converted into electricity?"a finding deemed by Werner von Siemens as “scientifically of the most far-reaching importance.”
Breakthroughs in the 20th Century
In 1953, Calvin Fuller, Gerald Pearson, and Daryl Chapin made a groundbreaking discovery with the silicon solar cell, which produced enough electricity to power small devices. The New York Times heralded this as “the beginning of a new era,” poised to harness the sun’s limitless energy for civilization.
Commercial Availability
By 1956, solar cells became commercially available, though prohibitively expensive at $300 per watt. These were initially used in toys and radios, making solar cell technology accessible to consumers in a novel way.
Space and Beyond
In the late 1950s and early 1960s, solar cells powered USA and Soviet space program satellites, eventually becoming the standard for space-bound satellite power.
Reducing Costs
The early 1970s brought significant cost reductions, thanks to Exxon, which lowered the price from $100 per watt to around $20 per watt. Solar cells then began to power offshore oil rig lights and other practical applications.
Expansion and Innovation
From the 1970s through the 1990s, the use of solar cells expanded dramatically. They appeared in railroad crossings and remote homes and powered Australia’s microwave towers, enhancing telecommunications. Even deserts saw solar technology enabling water access where traditional power wasn’t feasible.
Modern Developments
Today, solar technology is ubiquitous, powering everything from cars to high-flying aircraft. With the cost of solar cells now more affordable, solar power has become increasingly attractive.
Recent technological advancements have introduced screen-printed solar cells, solar fabrics for siding houses, and solar shingles for roofs. As international markets grow, solar panel manufacturers play a key role in the global solar power industry.
Conclusion
Solar power has come a long way since its inception. With continuous innovations and expanding applications, it promises a brighter and more sustainable future.
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