The MISO stakeholder community appears to support the RTO’s plan to extend the current arrangement on transmission flows between its Midwest and South regions.
Jeremiah Doner, MISO’s director of seams coordination, told stakeholders during a Market Subcommittee teleconference Thursday that the grid operator will file by Nov. 1 to add two years to a cost allocation agreement with SPP and six other parties. MISO agreed to a settlement, which manages the regional directional flows over SPP’s system to connect the Midwest and South regions, with the seven parties in 2016.
Doner said the agreement’s extension was generally well received by stakeholders.
But not all were happy.
MidAmerican Energy’s Greg Schaefer said he was disappointed because his company’s location in Iowa means it is shouldering a heavy financial burden for MISO’s use of SPP’s system above its 1,000-MW contract path.
“All the costs are being loaded onto a relatively small number of parties,” Schaefer said. “It’s not surprising that there is a consensus here.”
MISO’s payments to the other parties for regional flows above the contract path are recovered from its market participants using a special rate schedule, which increasingly has put emphasis on a flow-based beneficiary allocation over a load ratio calculation. The current calculation is 90% flow-based and 10% load-based, which will continue into 2023. (See MISO Seeks Extension on Midwest-South Tx Limit.)
The 2016 agreement can be terminated by any party with a year’s notice beginning Jan. 31, 2021. Without an extension or alternative solution, MISO’s flows would be limited to its original 1,000-MW contract path in either direction. The agreement limits MISO to 3,000 MW of flows in the north-to-south direction and 2,500 MW in the other direction.
MISO has said a two-year extension of the original terms will buy time for it, SPP and the other parties to explore eventually reopening the agreement’s terms. MISO has also said it may revisit the idea of constructing new transmission capacity to supplant the agreement. (See “No Midwest-South Tx Solution this Year,” Price Tag Rising for MTEP 20.)
