With particular reference to energy efficiency, where possible the following criteria are adopted; > installation of all the renewable energy sources available (photovoltaic, solar thermal, groundwater, cogeneration/intercalations) and the possibility of connecting to district heating and district cooling systems; > use of technologies that facilitate qualification of the building as a “Nearly Zero Energy Building”, or better; > adoption of technologies with high energy efficiency (for example, Energy Star certification), favoring, where possible, technologies and equipment that ensure outputs which are over > reduction of energy consumption for the production of domestic hot water with the use of renewables such as to ensure at least 50% of demand, favoring, where convenient, centralized production systems; > adoption of Energy Management Systems that facilitate continuous control of energy consumption.