Solar energy, radiation from the Sun capable of producing heat, causing chemical reactions, or generating electricity. The total amount of solar energy incident on Earth is vastly in excess of the world’s current and anticipated energy requirements. If suitably harnessed, this highly diffused source has the potential to satisfy all future energy needs. In the 21st century solar energy is expected to become increasingly attractive as a renewable energy source because of its inexhaustible supply and its nonpolluting character, in stark contrast to the finite fossil fuels coal, petroleum, and natural gas.
how does it work?
Solar panels crown rooftops and roadside signs, and help keep spacecraft powered. But how do solar panels work?
Simply put, a solar panel works by allowing photons, or particles of light, to knock electrons free from atoms, generating a flow of electricity, according to the University of Minnesota Duluth. Solar panels actually comprise many, smaller units called photovoltaic cells — this means they convert sunlight into electricity. Many cells linked together make up a solar panel.
Each photovoltaic cell is basically a sandwich made up of two slices of semi-conducting material. According to the Proceedings National Graduate Conference 2012, photovoltaic cells are usually made of silicon — the same stuff used in microelectronics.
What is the future of photovoltaics ?
This question is at the center of the reflections of more and more experts and scientists, who for years have been conducting experiments and developing prototypes destined to shape the energy landscape of the coming years. These efforts are driven by the need to create even more sustainable solutions , capable of minimizing the use of resources and energy used in production. The evolution of solar panels is at the heart of this process, as they represent one of the fundamental pillars for a better and more ecological future.
The advantages of photovoltaic?
In economic terms, the installation of a photovoltaic system allows you to reduce paid energy consumption and reduce costs on your electricity bill by up to 80% : an important advantage which, together with the environmental benefits, is the basis of the important growth of energy communities.
