Network and resource modeling

To ensure better stability and pricing across the grid, network and resource modeling is created using detailed information for transmission network elements, resources, and wholesale market participants. 

To participate in the ISO Full network Model as a transmission or new resource implementation, visit the new resource implementation page.

Market participant asset implementation

Network modeling

Full network model schedule

The network model defines system parameters, price node, and market scheduling limit mappings and planned network model updates.

Full network model process

Load distribution factor release report

The ISO will provide Load Distribution Factors for Pricing Nodes the responsible Utility Distribution Company identifies as having more than one retail customer (see Tariff Section To inform the ISO which Load Distribution Factors can be released, please complete the Affidavit and the Load Distribution Factor Report Template and submit both documents to The Load Distribution Factors report can be accessed via Market Modeling Data on the Market Participant Portal. Please note, access to Market Modeling Data requires a signed non-disclosure agreement. For more information refer to the Market Modeling Data User Guide.

Resource maintenance

The following resources enable reliable grid operations, including: maintaining resource characteristics and scheduling coordinator assignments.

Master file schedule

The Master file calendar is a guide to help scheduling coordinators determine the time line required when requesting changes to data maintained in the Master File application.

Resource data submission

For data templates, request forms, and documentation to submit requests to add or change specific operating parameters, visit the Master File (MFRD) page.

Variable operations and maintenance adder form

This application template provides a standardized format to aid scheduling coordinators to collect and submit the data needed for a negotiated Variable Operations and Maintenance adder. See the Business Practice Manual for Market Instruments, Attachment L, for instructions.

Multi-stage generating resource

For the multi-stage generator group registration form and guide book, visit the Master File (MFRD) page.

Demand response

The partially completed Generator Resource Data Template for New Demand Response provides guidance for completing the GRDT requirement for new Demand Response resources.

ISO fuel region and electric region definitions

This document describes the various gas transportation rates included in existing fuel and retail electric regions for CAISO and WEIM entities. See the Business Practice Manual for Market Instruments, Attachment C, for more information.

Attenuation factors for regulation

The attenuation factor or the multiplier associated with the regulation up and regulation down awards participating in the SOC management represent the anticipated impact on SOC by providing regulation. This multiplier will be updated quarterly based on the previous year historical use. These multipliers are hourly for regulation up and regulation down.

Gas future price and greenhouse gas allowance price

This document lists the projected gas price and greenhouse gas allowance price to be used in calculating the maximum Start-up and Minimum Load costs for gas units under the Registered Cost Option. See the Business Practice Manual for Market Instruments, Attachment G, for more information.

Use-limited resources

Resources that have operational or environmental restrictions that limit production hours but can operate for a minimum set of consecutive trading hours may be considered use-limited. New registration requests, use plan submissions and any questions should be sent to

Related application(s) and access

The Generator Resource Data Template and the Intertie Resource Data Template are used to submit requests to add or change specific operating parameters that reside in the Master File.

See the application pages for user guides.

Related ISO Tariff and Business Practice Manuals

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