SPP-MISO Joint Targeted Interconnection Queue (JTIQ) Study
Link: MISO-SPP JTIQ Dashboard
Transmission has been at capacity along the MISO and SPP shared border or seam, and both Regional Transmission Operators have been undergoing a grid evolution that is driving the need for MISO’s Reliability Imperative. Because of the lack of transmission along the seam, developers faced significant costs to connect to the grid.
The RTOs conducted a joint study that identified a five-project portfolio with an estimated cost of $1.6 billion. The JTIQ portfolio addresses significant barriers to the development of new generation along the MISO-SPP seam, enabling approximately 28.6 GW of generation to interconnect. The projects are larger and some ancillary benefits to load are expected.
On October 18, 2023, the U.S. Department of Energy (DOE) announced approval of $464.5 million in Grid Resilience and Innovation Partnerships (GRIP) program funds for the portfolio. This funding significantly reduces the estimated $1.6 billion investment for the JTIQ projects and further enhances the value presented by completion of this portfolio.
The JTIQ Portfolio was approved by SPP’s Board of Directors on December 9, 2024, and MISO’s Board of Directors as part of MTEP24 on December 12, 2024.
