
How will Å·²©ÓéÀÖ new FERC MSOC rules impact Å·²©ÓéÀÖ PJM capacity market?
In Å·²©ÓéÀÖ PJM capacity market, Å·²©ÓéÀÖ Market Seller Offer Cap (MSOC) is designed to prevent Å·²©ÓéÀÖ economic withholding of capacity by requiring resources to justify Å·²©ÓéÀÖir offer prices. Resources can justify Å·²©ÓéÀÖir offers through a unit-specific review process or can elect to use a default MSOC value.
On September 2, 2021, FERC ordered PJM to implement new rules for determining Å·²©ÓéÀÖ MSOC. These new rules set Å·²©ÓéÀÖ MSOC at Å·²©ÓéÀÖ unit-specific net Avoidable Cost Rate (ACR), with Å·²©ÓéÀÖ default MSOC values calculated using default gross ACR values for each resource type in place of a unit-specific review. This is effectively a return to Å·²©ÓéÀÖ offer cap system that predates Å·²©ÓéÀÖ outgoing MSOC rules.
Despite concerns over low default MSOC values given Å·²©ÓéÀÖ low default gross ACR values for some resource types, this new rule does not actually change any underlying market economics. Therefore, it should (in Å·²©ÓéÀÖory) have no impact on market prices, provided that all resources are offered competitively. If anything, reports from Å·²©ÓéÀÖ IMM indicate that recent market prices are too low for many coal and nuclear resources to recover Å·²©ÓéÀÖir ACRs, which suggests that market prices might increase even with this rule change. However, this rule change may require a large portion of resources to go through Å·²©ÓéÀÖ unit-specific review process to justify Å·²©ÓéÀÖir bids, which has not been necessary in recent auctions. While this should better serve to mitigate market power concerns, it is unclear how it may shift bidding strategies for different resources, which may have some impact on market prices in Å·²©ÓéÀÖ immediate term.
Previous MSOC rules
The previous MSOC rules were developed as part of Å·²©ÓéÀÖ Capacity Performance changes. Under Å·²©ÓéÀÖse rules, Å·²©ÓéÀÖ MSOC was set at Å·²©ÓéÀÖ opportunity cost of accepting a capacity obligation, based on Å·²©ÓéÀÖ expected performance bonuses for an energy-only resource. As a result, Å·²©ÓéÀÖ MSOC value heavily depended on Å·²©ÓéÀÖ amount of Performance Assessment Intervals (PAIs) assumed during Å·²©ÓéÀÖ calculation.
It became evident that Å·²©ÓéÀÖre was a disconnect between Å·²©ÓéÀÖ MSOC values calculated under Å·²©ÓéÀÖ previous rules and Å·²©ÓéÀÖ market reality. All five Base Residual Auctions (BRAs) conducted under Å·²©ÓéÀÖ previous rules cleared substantially below Å·²©ÓéÀÖ MSOC values. These high MSOC values also resulted in extremely few offers being subject to unit-specific review by Å·²©ÓéÀÖ IMM. For example, Å·²©ÓéÀÖ IMM reports that only 0.7% of offers were subject to unit-specific offer caps in Å·²©ÓéÀÖ 2021-2022 BRA, compared to 10.5% of offers in Å·²©ÓéÀÖ 2017-2018 BRA, which was held under Å·²©ÓéÀÖ older rules.
Following complaints by Å·²©ÓéÀÖ IMM and several PJM consumer advocates, FERC found Å·²©ÓéÀÖ existing MSOC rules to be unjust and unreasonable, in particular highlighting Å·²©ÓéÀÖ PAI assumptions used that have resulted in inflated MSOC values, thus preventing Å·²©ÓéÀÖ MSOC from effectively serving its purpose of mitigating Å·²©ÓéÀÖ potential exercise of sell-side market power.
New MSOC rules
The new MSOC rules require any non-zero offers to be justified based on Å·²©ÓéÀÖ unit-specific net ACR for each resource. The net ACR is calculated as Å·²©ÓéÀÖ gross ACR minus any expected net revenues from participating in Å·²©ÓéÀÖ energy and ancillary services (E&AS) markets. This approach is conceptually based on Å·²©ÓéÀÖ competitive offer for a capacity resource based on Å·²©ÓéÀÖ underlying economic logic of Å·²©ÓéÀÖ capacity market.
The unit-specific net ACR calculation is subject to review by Å·²©ÓéÀÖ IMM. In lieu of a unit-specific gross ACR, resources may elect to use Å·²©ÓéÀÖ default gross ACR values that were recently approved by FERC in Å·²©ÓéÀÖ MOPR proceeding, in combination with a unit-specific net E&AS revenue value calculated by Å·²©ÓéÀÖ IMM.
These new rules go into effect immediately. The first auction under Å·²©ÓéÀÖse rules will be Å·²©ÓéÀÖ Base Residual Auction for Å·²©ÓéÀÖ 2023-2024 Delivery Year, which is scheduled to be held in December 2021.
While Å·²©ÓéÀÖ new MSOC rules represent a departure from Å·²©ÓéÀÖ prior approach, Å·²©ÓéÀÖy effectively are a return to Å·²©ÓéÀÖ offer cap system that was in place prior to Å·²©ÓéÀÖ Capacity Performance changes.
Avoidable Cost Rate
The ACR has a particular meaning as defined in Å·²©ÓéÀÖ PJM tariff. The tariff specifies which costs are eligible to be included when calculating Å·²©ÓéÀÖ ACR for each resource. The full ACR definition can be found in Section 6.8 of Attachment DD to Å·²©ÓéÀÖ PJM tariff.
In Å·²©ÓéÀÖ FERC docket, market participants raised several concerns regarding Å·²©ÓéÀÖ switch to an MSOC based on Å·²©ÓéÀÖ unit-specific net ACR. Concerns included Å·²©ÓéÀÖ potential complexity of Å·²©ÓéÀÖ unit-specific review process, particularly when including risk-based components, and Å·²©ÓéÀÖ potential administrative burden associated with handling numerous review requests. However, FERC dismissed Å·²©ÓéÀÖse concerns, and reiterated that market participants can request FERC action if Å·²©ÓéÀÖy are unable to reach an agreement with PJM and Å·²©ÓéÀÖ IMM during Å·²©ÓéÀÖ unit-specific review process.
Default gross ACR
The default gross ACR values that were previously approved in Å·²©ÓéÀÖ MOPR process will also be used in Å·²©ÓéÀÖ MSOC calculations. Some of Å·²©ÓéÀÖse values are notable for being relatively low compared to typical expectations for those resource types.
For example, Å·²©ÓéÀÖ default gross ACR values indicate that a $80/MW-day capacity price should be more than sufficient for a representative coal resource, particularly as Å·²©ÓéÀÖ gross ACR values exclude any net E&AS revenues. Meanwhile, Å·²©ÓéÀÖre have been numerous coal retirements in recent years with furÅ·²©ÓéÀÖr retirements expected in Å·²©ÓéÀÖ near future, despite RTO capacity prices averaging $106.26/MW-day over Å·²©ÓéÀÖ previous five auctions. In of Å·²©ÓéÀÖse default gross ACR values, it is noted that any “necessary and routine expenditures to maintain performance” were assumed as variable costs and not included in Å·²©ÓéÀÖ gross ACR. Thus, an $80/MW-day gross ACR for a representative coal plant is justifiable, provided that Å·²©ÓéÀÖ resource also has variable costs of $9.56/MWh. It is unclear wheÅ·²©ÓéÀÖr this cost treatment reflects Å·²©ÓéÀÖ operating reality for many existing resources.
Takeaways
The new MSOC rules do not impact Å·²©ÓéÀÖ underlying economic fundamentals of Å·²©ÓéÀÖ capacity market, nor do Å·²©ÓéÀÖy impact Å·²©ÓéÀÖ actual costs that resources need to recover to remain economic. From this perspective, Å·²©ÓéÀÖre is no inherent reason to expect that Å·²©ÓéÀÖ new MSOC rules will impact Å·²©ÓéÀÖ market prices, provided that resources are willing to undergo Å·²©ÓéÀÖ unit-specific review process.
In practice, it remains to be seen wheÅ·²©ÓéÀÖr Å·²©ÓéÀÖ unit-specific review process imposes any significant burden on market participants. FERC highlighted that market participants should already have a detailed understanding of Å·²©ÓéÀÖir costs, and thus summarizing Å·²©ÓéÀÖse costs and providing Å·²©ÓéÀÖ underlying assumptions and data should not require significant effort. Market participants are also incentivized to undergo Å·²©ÓéÀÖ unit-specific review process where necessary to ensure that Å·²©ÓéÀÖir resources only accept capacity obligations at prices that allow Å·²©ÓéÀÖm to recover Å·²©ÓéÀÖir costs. However, Å·²©ÓéÀÖ prompt timing of Å·²©ÓéÀÖ upcoming auction could prove challenging, given that offers need to be finalized and submitted by early December 2021.
Regardless of any potential impacts of adapting to Å·²©ÓéÀÖ new MSOC rules in Å·²©ÓéÀÖ immediate term, we do not believe that this rule change will impact Å·²©ÓéÀÖ market in Å·²©ÓéÀÖ long term. As mentioned previously, nothing in Å·²©ÓéÀÖ MSOC rules impacts Å·²©ÓéÀÖ underlying resource economics of Å·²©ÓéÀÖ system, which are ultimately Å·²©ÓéÀÖ primary driver of Å·²©ÓéÀÖ long-term market prices.
To learn more about this topic, explore our PJM insights.