The modern world is increasingly energy-intensive: for transport, homes heating, the raising number of electrical and electronic equipment used in our homes. On one hand the use of fossil fuels has led to the progressive increase in costs for energy production, on the other hand it has inevitably led to the decrease of natural resources, with the further aggravation of the damage to the environment. In this scenario the use of solar energy is an increasingly convincing alternative, and the proof is the development of modern and efficient systems with photovoltaic solar panels and solar cells.
At present and even more in the future, the sun can be used to produce electricity and thermal energy thanks to more efficient and convenient plants that show a large increase in yield and a steady decrease of costs.
The solar thermal and photovoltaic technologies are the two most popular in terms of utilization of solar energy: from the first one we obtain thermal energy, which is used to produce hot water (for sanitary and heating use), while the second one generates electric power used directly on site or streamed into the network. But there is a third solution, which can produce both electricity and heat: we are talking about the 'Cogeneration'. The main advantage of cogeneration compared to traditional solar photovoltaic or solar thermal panel is efficiency: in a cogeneration plant of Trinum, the overall conversion efficiency of solar energy (heat and electricity) is 55.2%, with 13 , 8% and the electrical efficiency of 41.4% thermal efficiency.