The energy efficiency of a system represents the ability to exploit the energy that is supplied to meet the needs of end users and obtain the desired result.
The lower the consumption relating to the satisfaction of a given requirement, the better the energy efficiency of the system.
To make the most of energy it is necessary to set a trend target related to energy saving in end uses: industry, transport, agriculture, infrastructure, the houses in which we live, considering all the energy consumption that they entail.
The term “energy efficiency” also indicates the set of programming, planning, design and implementation actions that enable to consume less energy.
This is related, therefore, to the ability to guarantee a specific production process or the provision of a service through low energy use.
Energy efficiency can be achieved thanks to the so-called energy saving, i.e. the recovery of energy lost during various processes.
Energy efficiency allows savings margins in heating living spaces and in the production of domestic hot water. Other energy efficiency measures concern the replacement of thermal utilities with green source systems such as solar thermal.
The civil electrical demand is mostly related to lighting and supply for thermal uses.
Therefore, the main efficiency improvements must be directed towards a better technology for lighting and the replacement of thermal utilities through solar thermal systems, heat pumps and condensing boilers.
Energy efficiency for companies
Energy efficiency interventions get a return not only for the single company that implements innovative energy policies, but also for the entire industry and for the economy of the country.
Companies and industries are already supported by the provision of tax breaks and facilitations for innovations.