Oregon Revised Statutes Utility Regulation § 757.613

(1) If an electric company or Oregon Community Power invests moneys collected as a public purpose charge under ORS 757.612 on new cost-effective local energy conservation, or if the nongovernmental entity described in ORS 757.612 (3)(g) invests moneys paid to the nongovernmental entity under ORS 757.612 (3)(d) on new cost-effective local energy conservation, and if the investment involves updating the energy efficiency of a residential or nonresidential building, the electric company, Oregon Community Power or the nongovernmental entity may make those investments by conducting a whole building assessment of the energy efficiency of the building and, in consideration of the whole building assessment, by maximizing the overall energy efficiency of the building. For purposes of this subsection, a “whole building assessment” means a single assessment of savings opportunities, as identified by the Public Utility Commission by rule or order.

(2) An investment described in subsection (1) of this section must be limited to an investment in a single project, as authorized by the commission by rule or order.