Five regulatory bodies petition FERC to reverse MISO's $22 billion multi-value transmission undertaking portfolio
Article Title: Utility Commissions Challenge MISO's $22 Billion Transmission Portfolio Classification
In a significant development, five state utility commissions from Arkansas, Louisiana, Mississippi, Montana, and North Dakota have filed a complaint with the Federal Energy Regulatory Commission (FERC) against the Midcontinent Independent System Operator (MISO). The commissions are challenging MISO's classification of a $22 billion transmission portfolio as "multi-value" projects, arguing that the classification is incorrect due to inflated cost-benefit assumptions[1].
The Tranche 2.1 portfolio, which includes 24 projects, forms a large transmission backbone expected to be operational by 2032-2034. Unlike other transmission projects, multi-value projects under MISO have their costs shared across the entire MISO footprint. The complaint seeks to undo this classification, making the projects ineligible for this broad cost-sharing feature[1].
The utility commissions argue that MISO overstated the benefits of the transmission portfolio, particularly in its cost-benefit assumptions, which inflated the value of avoided capacity costs, mitigation of reliability issues, and decarbonization benefits. They contend MISO used flawed modeling and assumptions for the Tranche 2.1 portfolio, making the projects improperly eligible for shared regional cost allocation[1].
MISO, on the other hand, has defended the development of Tranche 2.1, emphasizing that it involved extensive stakeholder engagement and that the portfolio addresses necessary reliability and future system needs. However, the state commissions remain concerned that the inherent cost-benefit assumptions and modeling used by MISO inflate the portfolio’s perceived value, leading to inappropriate regional cost allocation[1].
Interestingly, a consultant for the utility commissions adjusted MISO's assumptions and analysis, estimating the benefits of the metrics to be between $4.3 billion and $7.2 billion, significantly lower than MISO's claimed $38.3 billion[1].
This dispute comes after FERC earlier this month denied MISO's petition to limit the market monitor's oversight of transmission planning. MISO's market monitor, Potomac Economics, had previously identified flaws with MISO's cost-benefit assumptions, but MISO's board ordered staff to challenge the market monitor's authority to be involved in transmission planning oversight[1].
The Tranche 2.1 portfolio aims to provide states with ambitious clean energy goals, such as Minnesota, Michigan, and Illinois, access to remote sources of clean energy. However, the controversy raises questions about the fairness of cost allocation in such projects and the importance of accurate cost-benefit analyses in the development of large-scale transmission projects.
MISO is currently reviewing the utility commissions' complaint regarding the Tranche 2.1 projects. The outcome of this review could have significant implications for the future of transmission planning and cost allocation in the MISO region.
[1] Source: Utility Dive, 2023.
In the ongoing dispute, the utility commissions are questioning the accurate classification of a $22 billion transmission portfolio as "multi-value" projects, citing inflated cost-benefit assumptions within the MISO business and finance sector. The commissions argue that the disputed Tranche 2.1 portfolio, consisting of 24 projects expected to be operational by 2032-2034, may improperly benefit from shared regional cost allocation due to flawed modeling and assumptions.
