As indicated above, a solar cell is a device that can convert light into electricity. This process takes place by light, or more precisely photons, containing a certain amount of energy and the material the solar cell is made of, has the special property that the photon’s energy can release electrons in the atomic lattice that makes up the material. This loose electron is then led away and replaced by another electron from the other end of the circuit, only to be struck loose again by a new photon and replaced by a new electron.
One now has an electric current driven by electrons that are constantly being unleashed by photons and replaced by new electrons. There are many different materials, more or less suitable as solar cells and these are used as needed, such as the amorphous silicon solar cells in the calculator, or the Gallium-based solar cells in the satellites.
The all-dominant solar cell technology used worldwide is with crystalline silicon as the basic material for the solar cells. Silicon is an element that is the second most abundant in the earth’s crust and the cells made of silicon are less than 0.2 mm thick. These are laminated on the back of a piece of tempered glass and you now have an extremely durable product that can be set up anywhere the sun shines and produces energy.
Solar cells in Denmark
Despite Denmark’s location high to the north, solar cells are a good investment both for the individual and for society. The solar cells will typically within 3-5 years have repaid the extra price from a passive roof, but already from the first electricity bill after connection, you will experience a permanent reduction in the household’s current expenses. For society, solar cells placed with the consumer, whether in the family or in business, are a great advantage.
By producing electricity locally at the consumer, the community can use existing infrastructure, as the cable goes from the solar cells and directly to the consumption in the building and you avoid the enormous costs of laying high voltage lines across the country, as well as the environmental costs of placing large solar farms on land. which could either be used for agriculture or nature restoration. At present, neighbors are paid to accept the large solar cell farms and the inconvenience this may cause, but Solartag believes and has the mission to put the solar cells where they belong; on the roofs of consumers around Denmark.
Storage is a way to increase the share of its consumption covered by solar energy, by saving the kilowatt-hours from the day’s production that were in surplus and using them after the solar cells have stopped producing after dark. As a society and consumers, we are facing an enormous electrification, where everything that was previously powered by fossil fuels must predominantly be replaced by electrically powered counterparts.
This means that the consumer must expect a much higher electricity consumption, for example for electric cars and heat pumps powered by electricity and it therefore becomes attractive to store its own production to the greatest possible extent, so that the current costs for electricity are kept low despite a growing Spending.
For this purpose, batteries are the most widespread, as they do not take up too much space and are a known and already used technology that will only see further development, with rapidly growing global demand. It is recommended to future proof your investment in solar cells, so that both production and storage capacity follow the requirements and adjustments of the future.