Charles Fritts installed the first solar panels on New York City rooftop in 1884. Here is a very brief overview of the basic principles. For a current to be produced, there must be a difference between positive and negative charges within a substance, this difference. In the 19th century, it was observed that the sunlight striking certain materials generates detectable electric current – the photoelectric effect. They have historically been used in. The first silicon photovoltaic cell was created all the way back in 1954 Why trust EnergySage? When was solar energy first used? When were solar panels invented? Though solar energy has found a dynamic and established role in today's clean energy economy, there's a long history behind photovoltaics. In 1909, inventor George Cove posed in front of an early rooftop solar panel of his own design for a photograph. One hundred and ten years later, the resulting image was reprinted in the official journal of the US' most prestigious research institute – but Cove was nowhere to be seen. In addition to the material itself shocking everyone, according to scientists, this new technology has the potential to be up to 1000 times more efficient. The first photovoltaic panels were able to power, at most, a radio. Technology is continuously developing, and the hence achieved eficiency keeps growing.