Oregon Revised Statutes Public Health and Safety § 469A.130

(1) The State Department of Energy shall establish a system of renewable energy certificates that can be used by an electric utility or electricity service supplier to establish compliance with the applicable renewable portfolio standard. The department shall consult with the Public Utility Commission before establishing a system of renewable energy certificates under this section. The department may allow use of renewable energy certificates that are issued, monitored, accounted for or transferred by or through a regional system or trading program, including but not limited to the Western Renewable Energy Generation Information System. The system established by the department shall allow issuance, transfer and use of renewable energy certificates in electronic form.

(2) The validity of a bundled renewable energy certificate for purposes of compliance with the applicable renewable portfolio standard is not affected by the substitution of any other electricity for the qualifying electricity at any point after the time of generation.