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The ISO provides resources and learning opportunities for the Western Energy Imbalance Market and Extended Day-Ahead Market participants and their transition customers.

Resources​

Western Energy Imbalance Market (WEIM) participants

These resources are intended for WEIM entities and participating generators that are directly involved in the Western Energy Imbalance Market.

Process overview

To join the WEIM, each resource must successfully execute two processes: 
     1. Integrate with the ISO Full Network Model
     2. Complete the WEIM resource onboarding procedure
The document linked below provides a detailed overview of how these two processes vary across different resources. Specifically, the document covers the procedure for new non-participating resources, new participating resources, non-participating resources converting to participating, participating resources converting to non-participating, and end dating/removing of a resource.
     - Western Energy Imbalance Market Procedure for Non-Participating and Participating Resources

1. Integrate with the ISO Full Network Model

All resources must complete the Model Submission and New Resource Implementation (NRI) process, as outlined in the Modeling Submission Checklist, prior to joining the Western Energy Imbalance Market (WEIM). Detailed guidance for completing this process is provided below.

Start Here: Checklist and Guide
Full network model schedule
Integration templates

2. WEIM resource onboarding procedure

When a resource is ready to onboard to the WEIM, that means all integration requirements from part one are met, including Modeling requirements, Contract requirements, and Scheduling Coordinator requirements. The documents below provide the procedure and templates needed for a resource to successfully onboard to the WEIM. 

Start Here: WEIM Procedure for Non-Participating and Participating Resources
Western Energy Imbalance Market Procedure for Non-Participating and Participating Resources
This procedure helps WEIM entities submit the required onboarding documentation for new participating and non-participating resources. The procedure also applies when a non-participating resource would like to become a participating resource, when a participating resource would like to become a non-participating resource, or for end dating/removing of a resource.

Templates for New Participating or Non-Participating Resources
The following documents will be submitted via a CIDI ticket along with the WEIM GRDT, which should already be completed. 
WEIM - New Scheduling Coordinator Acceptance - Resource - Letter Template
WEIM - Resource Owner Scheduling Coordinator Selection - Letter Template
Resource Control Agreement Disclosure Form

Templates for Converting Resources
Resources converting from Participating to Non-Participating or from Non-Participating to Participating will need all the above forms AND the following form.
WEIM - Transfer - Resource Relinquishing Scheduling Coordinator - Letter Template

BSCID Scheduling Coordinator Templates
Energy Imbalance Market Scheduling Coordinator Request for BSCID
WEIM - Transfer - Resources Between BSCIDs - Same Scheduling Coordinator

Scheduling Coordinator Letter Guides
WEIM Relinquishing Scheduling Coordinator Letter Resource Guide
WEIM Resource Owner Scheduling Coordinator Letter Resource Guide
WEIM Scheduling Coordinator Acceptance Letter Resource Guide

Transmission customers of WEIM entities

Our computer based training modules are for Transmission Customers of WEIM Entities to learn about participation in the WEIM, the real-time market, base schedules, system outages, metering and settlements. For WEIM updates, subscribe to news releases and notices. Transmission customers should contact their WEIM entity for most questions. For all other questions, contact ISO customer service.

Computer Based Training (CBT)

Training center courses

Western Energy Imbalance Market training

Explore topics pertaining to the real-time energy imbalance market that enables participants to buy and sell energy when needed.