Leadership in Energy and Environmental Design — the American standard, adopted by the US Green Building Council in 1995.
There are four types of LEED certificate:
The type of certificate depends on the number of points scored in each category.
The most common green building standard, established by the state British institute BREGlobal in 1990.
The institute issues 5 types of official certificates:
Within the National Scheme Operators program, local programs have already been certified, taking into account the social, cultural and climatic features of some European countries.