Midcontinent ISO

Preparing for winter starts well before temperatures drop.

MISO’s 2026-27 winter readiness assessment shows sufficient capacity to meet expected winter demand across the region. MISO and its member utilities continue to plan for a range of operating conditions, including tighter reserve margins and the potential for large winter storms, through seasonal assessments, drills and training exercises.

Read the news release: bit.ly/48qenWR

MISO's 2025 Value Proposition is here.

For the first time, the analysis captures the value of regional transmission planning alongside energy and ancillary services, market coordination and capacity sharing, using an updated methodology developed with The Brattle Group. The result: MISO delivered approximately $7.6 billion in net benefits last year, a benefit-to-cost ratio of about 21 to 1. Since 2007, MISO has delivered more than $57.6 billion in benefits.

As load growth accelerates and reserve margins tighten, coordination across a 15-state region only grows more valuable, and this report shows why. And for the first time since 2021, the report looks forward too: estimated net benefits could reach $16 billion by 2035 and $23.8 billion by 2045.

Read the full announcement in our news release: ow.ly/qCu550ZSGpu.

MISO has launched the fifth cycle of its Expedited Resource Addition Study (ERAS) process, adding 15 projects and approximately 7.3 GW of proposed new capacity to its interconnection pipeline.

The Cycle 5 portfolio spans natural gas, solar, wind and battery storage resources across MISO's North, Central and South regions, helping meet growing electricity demand across the region.

Since ERAS launched, 58 projects representing nearly 29 GW of proposed capacity have been or will be studied. Of those, 38 projects totaling approximately 18 GW have advanced to completed generator interconnection agreements, with an additional 5 projects representing approximately 3 GW nearing completion.

Read the full news release:bit.ly/4r3S16f

Systemwide grid conditions have improved across MISO's North, Central and South regions, and MISO has ended its Energy Emergency Alert declarations.

A Hot Weather Alert, Conservative Operations and a Capacity Advisory remain in effect as high temperatures continue. Visit our website for the latest grid conditions: ow.ly/gAQk50ZIvSW

An Energy Emergency Alert 2 (EEA2) is now in effect for the North, Central and South regions.

While the grid remains stable, this step allows our operators to access emergency generation resources and take additional actions to maintain grid reliability. MISO continues coordinating with member utilities and neighboring grid operators. Visit our website for the latest grid conditions: ow.ly/kZna50ZIvHf.