The Midcontinent Independent System Operator (MISO) is embarking on an formidable $21.8 billion initiative to increase its regional transmission community, aiming to ascertain a formidable 765-kV transmission spine that may span the Midwest. This transformative plan, revealed in a just lately reviewed last draft portfolio throughout an exhaustive two-day workshop, is about to redefine energy supply throughout the area.
Dubbed the Long Range Transmission Planning (LRTP) Tranche 2 proposal, this blueprint pivots on what MISO phrases “least regrets solutions,” devised to bolster the reliability and effectivity of energy distribution for its huge buyer base within the Midwest. A complete advantages evaluation mentioned in Wednesday’s session unpacks the multifaceted benefits anticipated from this intensive effort.
The meticulously crafted draft envisions an influence panorama in 2042, grounded in a situation termed Future 2A, which is knowledgeable by utility useful resource plans and state energy aspirations. It refines a preliminary proposition first launched again in March, setting the stage for crucial opinions by MISO’s committees this fall, with an anticipated board vote looming in mid-December. This plan will seamlessly combine into MISO’s 2024 Transmission Expansion Plan, encapsulating native, regional, and interregional tasks.
Should this proposal achieve the inexperienced gentle, MISO forecasts that the regional enhancements would start to come back on-line between 2032 and 2034—an endeavor that guarantees to reshape the energy material of the Midwest.
Echoing this optimism, Beth Soholt, the chief director of the Clean Grid Alliance—a consortium representing renewable energy builders—enthusiastically endorses MISO’s draft portfolio. In her phrases, “Tranche 2.1 will unlock significant economic and reliability grid benefits for households and businesses throughout the MISO Midwest and beyond.”
Soholt emphasizes the urgent want for the Eastern Interconnection to boost connectivity, enabling energy to traverse longer distances throughout excessive climate and facilitating a extra environment friendly energy market throughout the disparate seams of grid operators. “The more transmission we have, the better we can leverage new, economical resources, ultimately leading to electricity bills that remain manageable. We can’t expedite the deployment of Tranche 2.1 swiftly enough!” she declared.
This novel transmission portfolio enhances MISO’s northern area, constructing on the stable basis of the $10.3 billion Tranche 1 plan, which garnered board approval in mid-2022, alongside the $1.7 billion Joint Targeted Interconnection Queue (JTIQ) tasks alongside MISO’s boundary with the Southwest Power Pool. The obligatory tariff alterations for implementing the JTIQ proposal are presently present process scrutiny by the Federal Energy Regulatory Commission (FERC).
MISO anticipates that the draft portfolio will generate an astounding $23.1 billion in web advantages over the following 20 years, escalating to $83.2 billion throughout 40 years all through its Midwest jurisdiction. Notably, this deliberate infrastructure guarantees to yield an estimated $16.3 billion in averted capability prices over 20 years by enhancing entry to technology assets throughout the MISO footprint, together with an extra $14.8 billion in advantages derived from mitigating potential energy outages.
Fascinatingly, all seven zones inside MISO’s Midwest territory are predicted to expertise web benefits from the transmission endeavors, with Zone 2—spanning jap Wisconsin and Michigan’s Upper Peninsula—projected to reap probably the most important returns, yielding advantages that might eclipse prices by 2.8 to five.5 instances over the following 20 years.
Certain initiatives throughout the proposed transmission framework will likely be eligible for aggressive bidding, which MISO anticipates will begin early subsequent 12 months. This month, the grid operator plans to unveil proposed enhancements to its bidding course of for FERC’s evaluation, desiring to create a extra streamlined, versatile, and participant-friendly course of, as articulated in a presentation earlier this week.
In this intricate internet of energy planning, the way forward for MISO and its stakeholders seems to be poised for a major renaissance.

