Resources​

Resource Implementation Process

For a resource to participate in the Western Energy Market, each resource must successfully complete three processes: 
     1. Include resource in the ISO Full Network Model
     2. Complete metering plan documentation
     3. Complete market documentation 

1. Include Resource in Full Network Model

All resources must be included in a FNM model build prior to participating in the Western Energy Market (WEM). The FNM model schedule is located below.

Start Here: Checklist and Guide

Modeling Submission Checklist
This spreadsheet outlines required attributes for equipment, supporting documentation, template links, deadlines, and other key information for both CIM and Non-CIM projects.

FNM Schedule

     - Western Energy Imbalance Market Full Network Model Schedule - 2027

     - Western Energy Imbalance Market Full Network Model Schedule - 2026

These schedules provide the model build timeline, including all key milestones and deadlines.

WEIM FNM Late Scope Change Request Form

     - Western Energy Imbalance Market Full Network Model Late Scope Change Request Form

2. Metering Plan Documentation

New Resource Implementation Western Energy Imbalance Market Scheduling Coordinator Metered Entity Quick Start Guide - 2026 
The NRI WEIM SCME Quick Start Guide provides step-by-step instructions in a presentation-style format with visuals to support understanding.

3. Market Documentation

When a resource is ready to onboard to the WEIM, that means all integration requirements from part one and two 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 WEM. 

Start Here: WEM Procedure for Non-Participating and Participating Resources
Western Energy Imbalance Market Procedure for Non-Participating and Participating Resources
This procedure helps WEM 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 WEM 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

Master File Templates
WEIM GRDT Template
Western Energy Imbalance Market Generator Resource Data Template Version 18.0
WEIM Interchange Definition Template
Western Energy Imbalance Market Interchange Definition 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

Additional Information

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