Utilities are services that include the supply of gas, electricity, water, and sewerage. The term utilities may also be used to describe the companies that supply such services. Low carbon utilities refer to services that have a lower carbon footprint than the traditional services, such as supplies of low carbon electricity generated by renewable energy sources for example. - Description added by: David Lockie

Buildings are where the majority people in modern societies spend most of their time, whether in homes, commercial buildings, industrial facilities or retail complexes. The design and construction of buildings require a large investment of time, money and other resources. Then they require additional resources for running costs and maintenance. Bad design can greatly increase energy consumption over the whole lifetime of the building. Fortunately, good building design can greatly reduce energy consumption during construction and ongoing throughout a building's life. - Description added by: David Lockie