What type of photovoltaic systems exist and how long?

There are two major types of systems: autonomous (with storage tank or stand alone, ie not connected to the network) and connected to the network (or grid-connected).

The autonomous systems use the energy produced by exposure to sunlight during the day to charge a battery and release, then the energy stored during the night or when the sun is covered, to power small and medium-sized objects (tools of emergency , streetlights, repeaters, etc..) that do not naturally have a great assorvimento questoo .... in fact if it would require the presence of auxiliary batteries, which intervenes when the energy produced by the plant was no longer sufficient to take ... For example, a beacon of a port: can stop working hard to think!

The systems, grid-connected are normally used to provide power to an electrical grid already 'generators powered by conventional nozzle body and dispose of the surplus, using a counter that keeps track of the flows of entry and exit. Unique feature of these systems is the inverter, which converts direct current into alternating current.Then there is a counter that "counts" the energy produced and consumed, and that instead the grid.

But .. AS THESE LAST PHOTOVOLTAIC?

The photovoltaic modules have a rated life ranging from 50 to 100 years or so, although it is likely that 20/25 YEARS AFTER THE FIRST OF THE OPERATION OF PANELS AND ITS CELLS IN TERMS OF YIELD IN CALI WAY RATHER ... but with Sudden This does not mean that they stop working!

Modules to access grants for energy must be guaranteed by the manufacturer for at least 20 years, so we can safely say that a PV system has a guaranteed life of at least 20 years ... but AFTER?

YOU ARE ALREADY 'NOW CREATING THE PROBLEM OF DISPOSAL OF SOLAR PANELS.

Actually the problem is rather the first fake .... silicon, which is the primary panel, essentially "sand" disposed of, as boards or printed circuit boards of computers. It is not toxic material, the material is not against nature. The panel is covered with a sheet of tempered glass, which is to be disposed as crystal, and is finished by metal profiles. Else then a layer of EVA (Ethyl Vinyl Acetate) which is to be disposed as is done with waterproof tablecloths. Cables and junction boxes are normally used in construction. Without these considerations, then consider that we do based on what is the technology of today ... maybe in 15 or 20 years and more, we have refined the technology recovery and recycling of materials so as to not even worry about ..... doversene . perhaps your solar panel will become part of the frame of your future bike!

A different must be done in the case of panels containing Cadmium telluride: is a toxic material and in fact many of the leading manufacturers of photovoltaic panels is moving away from this type of product to do just that in silicon.