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December 5, 2025

Tri-State Generation and Transmission Association

NERC
GridEx Participants Report No Disruption from Shutdown
Participants in the upcoming GridEx VIII say the biennial exercise was not affected by the recently-ended government shutdown.
NOVVA Data Centers
FERC Rejects Tri-State’s ‘High Impact Load Tariff’ Aimed at Data Centers
FERC rejected Tri-State Generation and Transmission’s proposed tariff to designed to manage the projected massive growth in data center load confronting its Mountain West member utilities over the next decade.
New Mexico PRC
PNM Accounting Request Revives EDAM vs. Markets+ Debate
State regulators approved an accounting order for Public Service Company of New Mexico’s participation in CAISO’s Extended Day-Ahead Market, in a case that rekindled the debate over which day-ahead market PNM should choose. 
© RTO Insider 
Tri-State ‘BYOR’ Tariff Changes Target Large Loads
FERC approved Tri-State Generation and Transmission’s request to update a program designed to allow its member utilities more flexibility in how they procure power.
Tri-State Generation and Transmission Association
Tri-State Seeks FERC Approval for Data Center Load Tariff
Tri-State G&T is seeking FERC’s approval for a new tariff designed to manage the heavy volume of data center load expected to materialize in its member utilities’ service territories over the next decade.
Shutterstock
Tri-State Plan Includes Renewables, Batteries and Gas
Colorado regulators have approved Tri-State Generation and Transmission Association’s plan to add 1,657 MW of new resources from 2026 to 2031, despite objections about the inclusion of a new natural gas plant.
© RTO Insider LLC
Tri-State Tells Colorado PUC Joining SPP RTO in Public Interest
Tri-State asked the Colorado Public Utilities Commission to find it would be in the public interest for the power supplier to join SPP, saying integrating with the RTO would bring significant benefits.
Markets+ Joint Authors using CAISO data
Markets+ ‘Alert’ Covers CAISO’s Dual Roles as Market Operator, BA

CAISO will be inherently compromised in its role as an operator of a deeper Western market because of its conflicting responsibilities as BA within that market, a group of entities that support SPP’s Markets+ argue in their latest “issue alert.”

The White House
USDA Unlocks $3B+ for Rural Electrification Projects
The U.S. Department of Agriculture has announced more than $3 billion in funds to support clean electrification at seven rural electric cooperatives from South Carolina to Colorado.
Energy Strategies
FERC Reverses Decision on WestConnect Cost Allocation

Responding to an appellate court’s concerns about free ridership, FERC reversed a decision that allowed the WestConnect transmission planning region to include a category of participants not subject to binding cost allocation.


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