Solar photovoltaic's (PVs) are arrays of cells containing a material
that converts solar radiation into direct current electricity.
Parks vary in size and either use fixed or freestanding arrays. Rooftop
arrays are also gaining in popularity although are generally for self-
consumption instead of being connected to the grid. Each park is either
owned or part owned by private investors or companies.
Each installation has its own monitoring system to allow for
accurate measuring of the total electricity produced, which is then
billed to a pre-arranged utility company. Each "owner" also has their own
individual counter to monitor how much electricity their panels have
The EU Energy Institute has shown that 90% of existing solar panels will
last for 30 years and that 40-year panels will be available soon.
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