A new law went into effect on Jan. 1 in Washington, D.C. requiring building owners to begin measuring the energy use of new and existing commercial buildings using the Environmental Protection Agency’s Energy Star Portfolio Manager tool.
The law, approved and signed in 2008, is the first in the nation to require building owners to publicly disclose their energy ratings to prospective tenants and buyers. Building owners must begin revealing their energy ratings beginning on Jan. 1, 2012.