Solar panels are specially designed devices which are used to capture solar energy and convert it into electricity. They use a process that is known as the photovoltaic effect.
The silicon cells which make up the panels absorb photons from the sunlight. As these photons are absorbed, their energy is transferred to electrons within the silicon.
The extra energy enables the electrons to separate from their atomic bonds. The movement of these ‘free’ electrons creates an electrical current which is captured by the electrics in the solar panel. The current generated is DC so an inverter is then used to turn it into AC which can be used to power the building or be sent back to the electrical grid.
Solar panels can be made from either monocrystalline or polycrystalline silicon cells. These cells are soldered together and then sealed under an anti-reflective glass cover. They usually have an aluminium frame which allows them to be mounted to roofs and provides some structural support. They also have a plastic backing which offers protection and insulation for the rear of the panel.
Other Eco-Friendly Options
Another increasingly popular eco-friendly option is the use of air source heat pumps. These are a great way of reducing your carbon footprint and your energy bills at the same time. If you are interested in learning more about these, there are a number of specialist providers of air source heat pumps Gloucester and the surrounding area. Many of these have useful online resources for your perusal, such as the examples seen here: https://gsmlimited.com/services/air-source-heat-pumps/gloucester.
Are solar panels recyclable?
Because they are made predominantly from silicon, aluminium, and glass, solar panels are regarded as being recyclable. However, there is a significant (and specialist) infrastructure required to facilitate this. This is why, at present, only around 10% are being recycled.
Dedicated facilities are starting to appear globally so this should help considerably. There are also small amounts of precious metals (silver and copper) used in solar panels which can be extracted during the recycling process to make it more economically viable.
