set of economic activities related to the provision of services. It includes banking, insurance, commerce, transport, communications, tourism, and all sorts of consultancies. The term quatenary sector is sometimes used to encompass services related to knowledge, leisure and free time, such as spectacles and tourism.
The residential and tertiary sector, the major part of which is buildings, accounts for more than 40 % of final energy consumption in the Community and is expanding, a trend which is bound to increase its energy consumption and hence also its carbon dioxide emissions.
