Or. Rev. Stat. § 469.740
In accordance with ORS chapter 183 and after consultation with the Building Codes Structures Board or with the Construction Industry Energy Board, the Director of the Department of Consumer and Business Services shall adopt rules establishing energy conservation standards for public buildings. The standards shall provide means of measuring and reducing total energy consumption and shall take into account:
(2) The three basic systems comprising any functioning building, which are:
[1977 c.853 §3; 1987 c.414 §154a; 1993 c.744 §115; 2009 c.567 §10]