A draft order from the Public Utilities Commission of Nevada signals that the commission is likely to approve NV Energy’s participation in CAISO’s Extended Day-Ahead Market, but with conditions to address stakeholder concerns.

The draft order, released March 31, would grant NV Energy’s request to join EDAM in fall 2028. The commission is to vote on the order April 3.

In potentially granting NV Energy’s request to join EDAM, the draft order noted the company’s positive experience with CAISO’s Western Energy Imbalance Market. And being a WEIM participant is expected to reduce implementation costs for joining EDAM, the draft order stated.

The draft order also pointed to NV Energy’s “numerous, significant interties” with other expected EDAM participants. Those include eight direct interconnections with CAISO and connections with Idaho Power, Los Angeles Department of Water and Power, and PacifiCorp.

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Diverse energy resources available through EDAM was another factor in the draft decision.

NV Energy filed its request to join EDAM on Oct. 22 as an amendment to its 2025-2027 Energy Supply Plan. (See NV Energy Files Request to Join EDAM.)

The application cited a Brattle Group study that projected the company would save $93.1 million a year by joining EDAM relative to participating in WEIM alone. In contrast, joining SPP’s competing day-ahead market, Markets+, would increase annual costs by an estimated $7.3 million.

Some parties argued that the benefits to NV Energy of joining EDAM are uncertain because they’re based on assumptions in a production cost model. They said the commission should wait until EDAM is in operation in 2026 and 2027 before finding it’s prudent for the company to join. (See Caution Urged as Regulators Consider NV Energy’s Request to Join EDAM.)

The draft order said that “while the commission finds and agrees that there will be benefits [from joining EDAM], the commission cannot find that $93.1 million is a precise estimate of projected benefits.”

The draft order would require NV Energy to come up with a way to measure annual adjusted production cost savings from EDAM participation.

“The commission finds that NV Energy’s potential APC savings are seasonal and highly dependent on NV Energy’s ability to acquire excess California solar energy at very low, zero, or negative cost during limited hours of the day in the spring,” the draft order said.

The draft order also addressed surcharges to EDAM participants who don’t meet a daily resource sufficiency evaluation (RSE). NV Energy argued that it has enough resources to pass the RSE and doesn’t expect to pay any surcharges. The draft order says if there are RSE surcharges, company shareholders will be responsible for paying them.

Another stakeholder concern was that NV Energy has not yet revised its Open Access Transmission Tariff. The commission’s draft order includes a requirement for the company to file reports on the progress of its OATT stakeholder process, with drafts, comments and responses posted to its Open Access Same-time Information System (OASIS).

The independence of EDAM’s governance was a topic of questioning during a March 10 hearing on the request. (See EDAM Governance Questioned During NV Energy Hearing.)

The draft order noted that the Western Energy Markets (WEM) governing body has had primary authority on WEIM and EDAM issues since July 2025.

“The commission anticipates that Pathways Step 2 will further increase independent oversight,” the draft order said.