• Phase I of Tri-State 2020 Electric Resource Plan approved Monday by Colorado Public Utilities
• Approval is the result of a landmark, uncontested settlement with more than two dozen parties
in January, recommended for approval by an ALJ in late March 2022.
• Tri-State now moves to Phase II efforts, including solicitation of bids for new, clean resources
being issued in May 2022.

(April 19, 2022 – Westminster, Colo.) The Colorado Public Utilities Commission (CPUC) has approved a
landmark settlement that sets near-term greenhouse gas emission (GHG) reductions targets for Tri-State
Generation and Transmission Association, which will lead to an 80% GHG reduction for the cooperative
in the state by 2030.

On March 28, 2022, an administrative law judge (ALJ) for the CPUC recommended approval of a
settlement of Phase I of Tri-State’s 2020 Electric Resource Plan, which had received near-unanimous
support from more than two dozen utility members, environmental organizations, state agencies and
labor organizations. Approval of the settlement became effective on Monday, April 18.

“Tri-State is positioned to maintain reliability and affordability across our system, while advancing
greenhouse gas emissions reductions in Colorado,” said Duane Highley, CEO for Tri-State. “We are
grateful for the support from our members and those who have participated in the regulatory process as
we continue our transformation, and we look forward to the next phase of our resource plan effort.”

No exceptions were filed to the settlement agreement. Tri-State has agreed to reduce greenhouse gas
emissions related to its wholesale electricity sales in Colorado as follows: 26% in 2025, 36% in 2026, 46%
in 2027, and 80% in 2030. These amounts will be calculated based on Tri-State’s 2005 emissions baseline
for wholesale sales in Colorado.

Details of settlement agreement and next steps

With the settlement agreement approval, Tri-State will begin Phase II of its 2020 Electric Resource Plan,
and will solicit all-source bids in May 2022, with a focus on projects that support emissions reductions.
These resources would be scheduled to come online by 2025 and into 2026.

Tri-State will close the bidding process in early July 2022, and will file its ERP Implementation Report in
early December 2022, reflecting a detailed analysis of 5-6 portfolios, including Tri-State’s preferred

Parties to the settlement have agreed to an extensive set of modeling assumptions and inputs for Phase
II of the ERP, such as the update of certain technical assumptions related to the social cost of carbon and
methane, updates to reflect new Tri-State member partial requirements contracts, continued analysis of
the retirement date for the third unit at the Craig Station, and other information.

Tri-State also had agreed in the settlement to incremental annual energy efficiency savings targets for its
Colorado member system load, of at least 0.35% in 2023, 0.5% by 2024, 0.75% by 2025, and 1% by 2030.
A third-party facilitated stakeholder engagement process is also taking place this year to explore
community assistance opportunities for the City of Craig and Moffat County, Colo., as the region
prepares for the retirement of Craig Station by 2030.

Parties to the settlement include Tri-State, its Wyoming and Colorado member distribution systems who
intervened, the staff of the CPUC, the Colorado Energy Office, Colorado Independent Energy
Association, Colorado Office of Utility Consumer Advocate, Colorado Solar and Storage Association/Solar

Energy Industries Association, Conservation Coalition (including Sierra Club, Natural Resources Defense
Council and Western Colorado Alliance), International Brotherhood of Electrical Workers Local #111,
Interwest Energy Alliance, Western Resource Advocates and Southwest Energy Efficiency Project.

About Tri-State
Tri-State is a power supply cooperative of 45 members, operating on a not-for-profit basis, including 42
utility electric distribution cooperative and public power district members in four states. Together with
our member/owners, we deliver reliable, affordable and responsible power to more than a million
electricity consumers across nearly 200,000 square miles of the West. For more information about TriState, visit http://www.tristate.coop.

By Tucker Allmer - The BARN

Tucker Allmer & the BARN are members of the National Association of Farm Broadcasting (NAFB), the Colorado FFA Foundation, the Colorado 4H Foundation, the Colorado Farm Show Marketing Committee, 1867 Club Board Member, Denver Ag & Livestock Club Member, the Weld County Fair Board, the Briggsdale FFA Advisory Council, Briggsdale 4H Club Beef Leader & Founder / Coordinator of the Briggsdale Classic Open Jackpot Show.

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