WAPA and Markets

About WAPA

WAPA is committed to continuing to explore centralized market solutions on a region-by-region basis to support our ability continue to reliably deliver hydropower to our diverse customer base while adapting to changes in the energy landscape. Please see the resource links provided below for additional information and feel free to contact us if you’d like additional information.

Resources for Ongoing Market Activities in the West

Learn more about markets in the West in the Federal Energy Regulatory Commission’s Western Energy Markets Explainer (external link)
Rocky Mountain (RM) region, Colorado River Storage Project (CRSP) and Upper Great Plains (UGP) region Southwest Power Pool (SPP) Regional Transmission Organization (RTO) activities
Sierra Nevada (SN) region California Independent System Operator (CAISO) Extended Day Ahead Market (EDAM) activities
Desert Southwest (DSW) supports Arizona G&T Cooperatives in EDAM benefits study (news release)
CAISO EDAM (external link)
SPP Markets+ day-ahead market (external link)
CAISO West-Wide Governance Pathways Initiative (external link)

Completed WAPA Activities

UGP joined the SPP RTO in the Eastern Interconnection and placed its assets in the Western Interconnection under the SPP transmission tariff – Transition completed October 2015.
CRSP, RM and UGP Energy Imbalance Activities – Transition into the SPP Western Energy Imbalance Service (WEIS) completed Feb. 1, 2021
SN Energy Imbalance Activities – Transition into the CAISO Western Energy Imbalance Market (WEIM) completed March 25, 2021
DSW Energy Imbalance Activities – Transition into the CAISO WEIM completed April 5, 2023

WAPA and Markets Newsletter

Keep up to date on the latest activities surrounding markets at WAPA with this newsletter.

2024	2023	2022	2021	2020
March 2024	March 2023	February 2022	January 2021	January 2020
May 2024	April 2023	April 2022	February 2021	February 2020
July 2024	June 2023	June 2022	April 2021	March 2020
November 2024	October 2023	August 2022	June 2021	April 2020
	December 2023	October 2022	September 2021	May/June 2020
		December 2022	December 2021	July 2020
				August 2020
				September 2020
				October 2020
				November 2020
				December 2020

Contacts

Chrystal Dean, Vice President Enterprise Portfolio Management, Office of the Chief Operating Officer
Rebecca Johnson, Transmission and Power Markets Advisor, Enterprise Portfolio Management

Vice Presidents of Power Marketing:

Brent Osiek, Colorado River Storage Project Management Center
John Paulsen, Desert Southwest Region
Parker Wicks, Rocky Mountain Region
Arun Sethi, Sierra Nevada Region
Lori Frisk, Upper Great Plains Region

Last modified on March 21st, 2025