Leed, acronym for Leadership in Energy and Environmental Design, is an evaluation of the energy and environmental performance of the buildings aiming to the promotion and spread of the so called “green” buildings that are characterized by high standard of energetic and environmental sustainability. The Leed system was born in America in 1933, promoted by the US Green Building Council (Usgbc), a non-profit organization of more than 11 thousand members. Being part of the LEED scheme allows to obtain a certification of the buildings that have achieved the required levels of energy and environmental performance and in compliance with specific eco-friendly requirements.
The building undergoing certification must meet all the mandatory requirements, while the credits are awarded based on the level reached by the requirements considered, assessed according to established criteria.
The Leed structure includes seven areas:
MAX. 26 CREDITS
The building and its surroundings: limiting the impact of construction activities, controlling the flow of rainwater, using constructive techniques that respect the balance of the ecosystem, reducing the "heat island" effect, reducing light pollution, etc.
MAX. 10 CREDITS
Use, management and disposal of water: reduce drinking water consumption, reduce the volume of sewage discharges, reuse rainwater.
MAX. 35 CREDITS
Improvement and control of energy performances, use of energy from renewable or alternative sources.
MAX. 14 CREDITS
Selection of materials: increasing the use of sustainable materials, reducing waste for disposal (during construction and demolition), reducing the environmental impact due to transportation.
MAX. 15 CREDITS
Quality of the internal environment: healthiness, safety, comfort, energy consumption, ventilation, natural lighting, control of pollutants in the air.
MAX. 6 CREDITS
Innovating techniques and sustainability in construction.
MAX. 4 CREDITS
Increase awareness upon the characteristics of the environmental areas of the location where the works are carried out.