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Stakeholders and the ISO are actively working to improve market design by identifying potential enhancements and implementing them in a timely and transparent fashion

Policy initiatives and stakeholder process

Stakeholder input is key to shaping market designs and policies. Our stakeholder process is grounded in inclusivity, transparency and trust. We are committed to providing ample opportunity for stakeholder input into ongoing policy initiatives to develop enhancements to the Western Energy Imbalance Market and Extended Day-Ahead Market. We look forward to your engagement.

Learn more in the Stakeholder Process Guide.

Understand and track the release planning process.

Current initiatives

To view the 2026 process timeline and policy initiative catalog, visit the 2026 market policy catalog and roadmap webpage.

For an overarching view of where each initiative is in the development process, view the Policy Initiatives Timeline (updated weekly).

Using links in the table below, users can track policy development milestones, phases, meeting dates, document postings, comments and submission deadlines, and filings and implementation dates for each initiative.

Initiate

Prioritize objectives and initiatives to develop roadmap

Scope

Define opportunities and scope to reflect diverse goals and objectives

Develop

Stakeholders collaborate to develop solutions and final proposal

Decide

Obtain governance approvals and submit FERC filing as required

Implement

Complete customer readiness, market simulation and go-live

Initiative Decisional Classification Process Status
Day-ahead market enhancements Joint Authority Implementation
Demand and distributed energy market integration Working group
Extended day-ahead market Joint Authority Implementation
Price formation enhancements WEM GB Primary Authority Proposal development phase
Storage design and modeling Working group
Gas resource management WEM GB Primary Authority Implementation
Extended day-ahead market congestion revenue allocation Joint Authority Implementation
Cost-of-service study extension, revenue requirement cap increase, and other rate design considerations Proposal development phase

WEM GB Primary Authority  Initiative has at least one element that appears to fall within the primary authority of the Board of Governors and the WEM Governing Body.

Joint Authority:  Initiative has at least one element that appears to fall within the joint authority of the Board of Governors and the WEM Governing Body. Please note: The Joint Authority classification was retired effective July 2025.

WEM Advisory:  Initiative has at least one element that appears to fall within an advisory role of the WEM Governing Body and the WEM Governing Body does not appear to have primary authority with respect to any part of the initiative.

CAISO Board only:  WEM Governing Body does not appear to have any decisional authority for the proposed policy or tariff amendments.

Learn how initiatives are identified and classified.

Completed initiatives

Completed activities

Title Topic Posted
EIM BOSR Comments - Proposed Revisions to EIM Governance Documents Issue Paper Revisions to EIM governance documents 12/19/2017, 2:45 PM
BPA Comments - Proposed Revisions to EIM Governance Documents Issue Paper Revisions to EIM governance documents 12/19/2017, 2:45 PM
Agenda and Presentation - Revisions to Energy Imbalance Market Governance Documents - Oct 25, 2017 Revisions to EIM governance documents 10/24/2017, 4:29 PM
Issue Paper - Revisions to Energy Imbalance Market Governance Documents Revisions to EIM governance documents 10/18/2017, 11:50 AM
Greenhouse Gas Emissions Tracking Report - Frequently Asked Questions Draft greenhouse gas emissions tracking report 12/28/2016, 2:02 PM
PG&E Comments - Draft Greenhouse Gas Emissions Tracking Report Draft greenhouse gas emissions tracking report 11/22/2016, 3:44 PM
TURN Comments - Draft Greenhouse Gas Emissions Tracking Report Draft greenhouse gas emissions tracking report 11/22/2016, 3:44 PM
Presentation - Draft Greenhouse Gas Emissions Tracking Report Draft greenhouse gas emissions tracking report 11/11/2016, 11:34 AM
Greenhouse Gas Emissions Tracking Methodology Draft greenhouse gas emissions tracking report 11/07/2016, 1:17 PM
Draft Greenhouse Gas Emissions Tracking Report Draft greenhouse gas emissions tracking report 11/07/2016, 1:17 PM
EE Comments - EIM Governing Body Guidance Document WEIM Governing Body draft guidance document 10/19/2016, 10:40 AM
BPA Comments - EIM Governing Body Guidance Document WEIM Governing Body draft guidance document 10/19/2016, 10:40 AM
PGP Comments - EIM Governing Body Guidance Document WEIM Governing Body draft guidance document 10/19/2016, 10:40 AM
Agenda and Presentation - Energy Imbalance Market Governing Body Draft Guidance Document WEIM Governing Body draft guidance document 10/11/2016, 8:23 AM
Draft Guidance Document - Energy Imbalance Market Governing Body WEIM Governing Body draft guidance document 10/04/2016, 10:56 AM
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WEM Meeting Calendar