What is the history of solar energy?

From the earliest days of solar-powered satellites to modern rooftop arrays and utility-scale solar farms, this is the complete history of solar energy—and a look at its exciting potential in the years to come. The story of solar energy begins in 1839 with the work of French physicist Edmond Becquerel.

When was solar technology first used?

Some of the earliest uses of solar technology were actually in outer space, where solar was used to power satellites. In 1958, the Vanguard I satellite used a tiny one-watt panel to power its radios. Later that year, the Vanguard II, Explorer III, and Sputnik-3 were all launched with PV technology on board.

Who invented solar panels?

However, solar cells as we know them today are made with silicon, not selenium. Therefore, some consider the true invention of solar panels to be tied to Daryl Chapin, Calvin Fuller, and Gerald Pearson's creation of the silicon photovoltaic (PV) cell at Bell Labs in 1954.

When was the first solar cell made?

1954: Bell Laboratories produces the first efficient silicon solar cell. While weak compared to current cells, these cells are the first that can generate significant amounts of electricity—at about 4% efficiency. 1955: The first solar-powered telephone call is made.

When did solar panels become possible?

Although solar panel production became feasible in the 1960s and 1970s. Technology was still too expensive for most people at the time. To lower the price of solar energy, researchers kept working on new technologies. The first P-N junction cell was created after semiconductors gained popularity.

When did NASA start using solar power?

In 1958, the Vanguard I satellite used a tiny one-watt panel to power its radios. Later that year, the Vanguard II, Explorer III, and Sputnik-3 were all launched with PV technology on board. In 1964, NASA was responsible for launching the first Nimbus spacecraft, a satellite able to run entirely on a 470-watt solar array.