On January 26, 2023, the Western Energy Imbalance Market Body of State Regulators (WEIM-BOSR) provided written advice to the Western Energy Imbalance Market Governing Body on the Day-Ahead Market (EDAM) policy initiative and the Governance Review Committee’s (GRC’s) Phase Three EDAM Governance Final Proposal (Final Proposal). The BOSR supports the overall EDAM market design set forth in the final proposal. Throughout the initiative, the BOSR focused on two specific design components of the framework, the EDAM Resource Sufficiency Evaluation (RSE) and Transmission Availability, providing substantive comments at each opportunity. Additionally, the BOSR provided comments throughout the GRC’s stakeholder process on the EDAM governance proposal. The following is a summary of BOSR’s position on both initiatives: 1) the BOSR generally supports the implementation of the EDAM RSE; 2) the BOSR generally supports the proposed failure consequences of the EDAM RSE; 3) the BOSR supports the proposed buckets framework and underlying pathways for transmission made available to the EDAM; 4) the BOSR supports the proposed historical transmission revenue recovery mechanism for transmission provided to EDAM; and 5) the BOSR supports the GRC’s proposed governance structure for the EDAM.\