Article: Certifying green: the state and future of the LEED exam.(THE LEED GUIDE)

The Leadership in Energy and Environmental Design (LEED) program, offered by the U.S. Green Building Council (USGBC) is a voluntary credentialing program that defines a structure's "high-performance green building" system. Driving the system's adoption are LEED Accredited Professionals (AP), individuals who passed the rigorous LEED AP exam and understand the stringent requirements required to make a building green.

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The USGBC's LEED system has grown considerably since it was founded; more than 3.6 billion square feet of commercial construction space is currently rated in the LEED system, and almost 14,000 private homes have been or are currently ...

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