Section 19.29A.150 - Renewable energy certificates(1) Any renewable energy certificate included in the source and disposition report must be created and retired within the certificate tracking system approved by the department and must represent renewable generation of a generating facility located in the region of the tracking system.(2) A renewable energy certificate retired for any of the following purposes may not be included in the source and disposition report: (a) Voluntary renewable energy programs, except where the electricity product is an optional product complying with RCW 19.29A.090;(b) Compliance obligations not related to the provision of electricity service to retail customers in Washington; and(c) Any other purpose established by rule by the department.(3) A retail supplier must retire any renewable energy certificates included in its source and disposition report within one year after submitting its report.