Transmission benefits from MISO's plan are allegedly inflated, as the Invenergy project is left out according to the market analysis report.
In a continued standoff, Invenergy's Grain Belt Express transmission project remains excluded from the Midcontinent Independent System Operator (MISO)'s transmission expansion planning, causing significant setbacks and scrutiny.
The project, a 5-GW transmission line planned to be built in phases from Kansas to Illinois by Chicago-based Invenergy, has faced challenges since its exclusion was announced in August 2022. MISO, a regional transmission organization required to operate in the public interest, has maintained its stance, citing the need for a rigorous, transparent stakeholder process in its planning efforts, which are considered a model for grid operators across North America.
However, Invenergy filed a complaint with the Federal Energy Regulatory Commission (FERC) over the exclusion, and commissioners from Arkansas, Mississippi, North Dakota, and the Coalition of MISO Transmission Customers have urged FERC to act on Invenergy's complaint. David Patton, president of Potomac Economics, contends that MISO's transmission plans and business case analyses are "highly biased in favor of over-building transmission." Patton also claims that a "properly calculated" benefit-cost ratio for the Tranche 2.1 transmission projects would be less than 0.4, while MISO estimated the portfolio to have a benefit-cost ratio of 1.8 to 3.5.
Recent developments have further complicated the situation. The Department of Energy (DOE) has terminated its $4.9 billion conditional loan commitment for the Grain Belt Express project, citing it as "not critical" for federal support due to long delays and other concerns. This decision significantly impacts the project’s financial feasibility. Separately, Missouri’s Attorney General has opened an investigation into the Grain Belt Express project, indicating ongoing regulatory and political pressures surrounding the project in one of the key states it traverses.
Public and stakeholder opposition, particularly from certain states like West Virginia, is also active, with concerns that long-distance transmission lines like Grain Belt Express may have inefficient, costly impacts with limited local benefits. These concerns feed into broader debates on transmission planning and resource adequacy in regional markets.
If resolved in Invenergy's favour, the project's inclusion could complicate MISO's transmission expansion planning, potentially affecting the timeliness and effectiveness of regional transmission infrastructure enhancements. On the other hand, without DOE backing and under regulatory investigation, the project's future is uncertain, which could stall or halt its development altogether.
The situation underscores challenges in balancing large-scale grid expansion projects, competing regional interests, and regulatory frameworks. It may push MISO and regulators to revisit planning criteria, stakeholder engagement, and funding mechanisms to ensure competitive, reliable transmission development. Meanwhile, the construction of merchant lines, which are paid for by their customers, could save utility ratepayers money, according to the state regulators and coalition.
- Invenergy's complaint to the Federal Energy Regulatory Commission (FERC) regarding the exclusion of the Grain Belt Express transmission project from the Midcontinent Independent System Operator (MISO)'s transmission expansion planning has received support from commissioners in Arkansas, Mississippi, North Dakota, and the Coalition of MISO Transmission Customers.
- The financial feasibility of the Grain Belt Express project has been significantly impacted due to the Department of Energy (DOE) terminating its $4.9 billion conditional loan commitment and Missouri's Attorney General opening an investigation into the project, contributing to uncertainties about its future development.
