LEED points are awarded on a 100-point scale, and credits are weighted to reflect their potential environmental impacts. Additionally, 10 bonus credits are available. A project must satisfy all prerequisites and earn a minimum number of points to be certified.
The categories and possible points are:
Sustainable Sites: 21 points
Water Efficiency: 11
Energy and Atmosphere: 37
Materials and Resources: 14
Indoor Environmental Quality: 17
Bonus points are awarded for Innovation in Design worth 6 possible points and Regional Priority worth 4 points.
40 points are necessary in order to gain certification, however there are additional rankings according to how many points:
Silver: 50+ points
Gold: 60+ points
Platinum: 80+ points
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