The Bonneville Power Administration announced March 6 that it intends to join SPP’s Markets+, saying in its highly anticipated draft policy that the day-ahead market “is the best long-term strategic direction for Bonneville, its customers and the Northwest.”
The purpose of the draft policy is to clarify which day-ahead market offering BPA will pursue and to continue to support the development of Western energy markets, the agency said. Following a 30-day public comment period, BPA expects to issue a final record of decision in May, according to a news release.
BPA choosing Markets+ over CAISO’s Extended Day-Ahead Market (EDAM) is perhaps unsurprising given an agency staff report published in April 2024 recommending that it join SPP’s offering. Still, the draft policy follows months of discussions and debates about the impact of BPA’s choice on Western electricity markets and customers. Even United States senators have weighed in. (See BPA Staff Recommends Markets+ over EDAM and BPA Has not Made ‘Business Case’ for Markets+, NW Senators Say.)
BPA said it landed on Markets+ based on “overall market design features, including an independent governance model, uniform resource adequacy requirements, superior GHG design and congestion revenue design that incentivizes transmission investments.”
Independent governance has been a key consideration for BPA. Staff have argued that Markets+ provides greater independence from California state influence compared with the EDAM option. The draft policy reiterates this point, saying that “independent market governance continues to be paramount to Bonneville’s policy direction towards participation in Markets+.” It notes that Markets+ will be governed by an independent panel whose members “must be independent of market participants.”
By contrast, efforts launched by the West-Wide Governance Pathways Initiative to ensure independent governance of CAISO’s EDAM and Western Energy Imbalance Market (WEIM) have not gone far enough, it says.
A proposal under Step 1 of the Pathways Initiative to elevate the Western Energy Markets Governing Body’s authority over CAISO energy markets was approved unanimously by the body and ISO’s Board of Governors in 2024. (See CAISO, WEM Approve Pathways ‘Step 1’ Tariff Amendments.)
Still, the board will continue to exercise some influence, and “critically, the day-to-day management of policy development and market operations remains with CAISO management, who ultimately report to the” board, the policy states.
California lawmakers recently introduced SB 540, or the Pathways Bill, setting conditions under which CAISO and Golden State utilities can participate in energy markets governed by an independent regional organization. (See Pathways ‘Step 2’ Bill Sets Conditions for EDAM Governance.)
However, passage of the bill is not guaranteed, and though BPA supports the effort, “the current Pathways proposal does not go far enough to meet … what our expectations are of an independent governance model,” Rachel Dibble, BPA vice president of bulk marketing, told reporters.
Dibble added that BPA believes the ideal governance model already exists within the Markets+ framework, saying “it’s there for us right now. [With] the California model, the changes are still just speculative.”
Jayme Ackemann, CAISO’s head of communications, told RTO Insider that the ISO appreciates BPA’s contributions to the development of regional markets in the West. She noted that BPA and other utilities have benefited from the WEIM, saying the real-time market has “has delivered substantial reliability benefits and cost savings of nearly $7B to consumers.”
“BPA’s final market decision will have major impacts on reliability and affordability for electricity customers in the Northwest and across the West,” Ackemann said. “We encourage BPA to continue to evaluate EDAM and engage in the Pathways Initiative as governance reform legislation works its way through the California legislature.”
Antoine Lucas, SPP’s vice president of markets and incoming COO, also offered his thoughts, saying SPP is encouraged by BPA’s draft policy.
“From the outset, our goal has been to provide a competitive market option that could earn the participation of Western stakeholders,” Lucas said. “Through its detailed analysis of day-ahead market choices, BPA has concluded in its draft policy paper that Markets+ will provide the most benefits for their customers.”
Reaction Through the West
Scott Simms, executive director of the Portland, Ore.-based Public Power Council (PPC), said “BPA’s decision to move forward with Markets+ underscores the strength of the SPP Markets+ option, which was designed by diverse stakeholders across the West.”
“With many utilities across the Northwest and Southwest already supporting Markets+, this decision signals even greater momentum toward a broad and well-structured market that delivers reliability and cost benefits,” Simms added. “We encourage additional utilities to consider joining this effort to further enhance regional coordination and market efficiencies.”
The PPC, which represents the Northwest’s extensive network of publicly owned utilities that make up BPA’s base of “preference” customers, began actively urging BPA to choose Markets+ over EDAM even before the agency’s staff issued its “leaning” in favor of the SPP market last spring. (See Northwest Public Power Group Endorses Markets+ over EDAM.)
In its statement, the PPC pointed to the SPP market’s “well-defined, inclusive and transparent decision-making process that ensures public power’s interests — along with those interests of other stakeholders and participants — are represented and protected over the long term.”
PPC Chair Chris Robinson, general manager of Tacoma Power, said the group appreciated “BPA’s thoughtful approach and transparent process used to reach this decision.”
Meanwhile, Seattle City Light expressed disappointment with the decision.
“Having two markets in the region is inefficient [and] will negatively affect consumer rates and potentially cause adverse effects on regional greenhouse gas emissions reductions and reliability, especially during extreme weather events,” said Jenn Strang, media relations manager at City Light. “We remain steadfast in our position that our customers are best served with an efficient, well-connected and integrated market.”
Brian Turner, Western regulatory director at Advanced Energy United, shared City Light’s sentiment. Turner said in a statement that BPA failed to consider the many stakeholders who urged it to pause its market decision.
“Joining a smaller, more balkanized market undermines the very affordability and reliability of clean energy resources that the region depends on,” Turner said. “By rushing into this decision, BPA risks hitching its wagon to the wrong horse. With this decision, we are now heading toward a bifurcated West that will be intermeshed with costly seams running all over the region. Working together in a larger, more unified market, the West could be an energy powerhouse for the nation, but this decision threatens to put that vision out of reach.”
The NW Energy Coalition noted that studies, including one commissioned by the agency itself, found that BPA would realize significant benefits by joining EDAM instead of Markets+. (See BPA Sticks to Markets+ Leaning Despite Study Showing EDAM Benefits and Brattle Study Finds EDAM Gains, Markets+ Losses for BPA, Pacific NW.)
“In the coming weeks, we will further analyze this proposal and work to align BPA’s final decision with the best interest of all regional stakeholders,” NWEC Executive Director Nancy Hirsh said.
However, BPA has argued that the studies show a wide range of outcomes and cannot capture the full economic picture.
“In addition, this has never been a purely quantitative decision,” BPA’s Dibble told reporters. “We have really significant beliefs about the importance of governance, the importance of an open stakeholder process, and while those cannot be quantified, those are qualitative elements that we hold as very high priorities.”
She said those qualitative factors will, in the long run, lead to “positive quantitative benefits” because of Markets+’s “equitable” governance framework.
Asked whether BPA is concerned about the lack of transmission connectivity among entities that have committed to Markets+, and whether those entities are seeking to take steps to ensure the ability to trade, Dibble said the agency’s policy paper acknowledges the “limited connectivity between regions that we do hope, over time, will become more robust,” but she acknowledged that no plans for new transmission are in place.
“However, recognize that the final footprints are not solidified at this point,” she added. “There are still several entities who may have leaned in one direction that could rethink their decision because they have not signed agreements at this point. There are some that have been silent who could now step up with a decision and join either footprint. So I think it is premature to believe we know exactly what the footprints are going to be.”