Midcontinent ISO

Operating the power grid, managing energy markets and planning the future grid reliably, cost-effectively.

[Midcontinent ISO @MISO_energy]

The 2026 OMS-MISO Survey results are now available, showing states and utilities across the region are planning record levels of resource additions over the next five years.

Member utilities expect to add an average of 15 GW of new accredited summer capacity each year, a pace that would meet the region's growing power needs as demand continues to rise.

This annual collaboration between MISO and The Organization of MISO States (OMS), along with MISO’s Planning Resource Auction and Futures analyses, helps inform real-world decisions and long-term planning to support a reliable energy future.

Read the full news release: https://t.co/yhritK3q1j

[Midcontinent ISO @MISO_energy]

MISO has launched the fourth cycle of its Expedited Resource Addition Study (ERAS) process, adding seven projects and approximately 3.7 GW of proposed new capacity to its interconnection pipeline.

The Cycle 4 portfolio spans natural gas, solar and battery storage resources across MISO's Central and South regions, with projects targeted for in-service by 2029.

Since ERAS launched, the program has accepted or is currently validating 58 projects representing nearly 28 GW of proposed capacity. Of those, 25 projects totaling approximately 11 GW have advanced to completed generator interconnection agreements, with an additional 15 projects representing approximately 8 GW nearing completion.

Learn more: https://t.co/63Q7td7AIo

[Midcontinent ISO @MISO_energy]

This afternoon, MISO is hosting its annual Summer Readiness Workshop, sharing the 2026 outlook with stakeholders on capacity, operations and the season ahead.

This year's Planning Resource Auction produced approximately 142.6 GW of summer capacity, up about 4.8 GW from last year, with new solar additions as the largest contributor. Those additions position the region well to meet an expected summer peak of around 125 GW.

With nearly double the solar capacity on the system compared to last year, MISO has refined how it manages shifting net load patterns, steep ramps and evening reliability risks through updated reserve requirements and enhanced forecasting tools.

Read the full news release: https://t.co/SzltrOJmsD

[Midcontinent ISO @MISO_energy]

MISO has released the results of its 2026 Planning Resource Auction. The auction indicates that the region has sufficient generation capacity to maintain reliability for the upcoming planning year (June 2026–May 2027).

Results will be reviewed in a stakeholder meeting at 2 p.m. ET, on Wednesday, April 29. Visit the MISO News Center to learn more: https://t.co/nc0NUxFbel.

[Midcontinent ISO @MISO_energy]

Another wave of generation resources is advancing through MISO’s Expedited Resource Addition Study (ERAS). Learn more: https://t.co/sh7VhYWqMR.

The third ERAS cycle includes 𝟭𝟱 𝗽𝗿𝗼𝗷𝗲𝗰𝘁𝘀 𝗿𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁𝗶𝗻𝗴 𝗮𝗯𝗼𝘂𝘁 𝟴 𝗚𝗪 𝗼𝗳 𝗽𝗿𝗼𝗽𝗼𝘀𝗲𝗱 𝗰𝗮𝗽𝗮𝗰𝗶𝘁𝘆, helping advance the resources needed to reliably serve a region experiencing growing electricity demand.

#EnergyTransition #EnergyNews #EnergyTwitter

[Midcontinent ISO @MISO_energy]

#ICYMI: Yesterday, MISO released the latest Reliability Imperative report outlining how we’re working with our members and states to anticipate challenges, accelerate solutions and maintain reliability as system complexity grows.

Explore what's new in the 2026 report: https://t.co/I2VdhVvTLJ

#EnergyTwitter #EnergyTransition #CriticalInfrastructure #ReliabilityImperative

[Midcontinent ISO @MISO_energy]

Today, MISO released the latest Reliability Imperative report outlining how we’re working with our members and states to anticipate challenges, accelerate solutions and maintain reliability as system complexity grows.

Since launching the Reliability Imperative in 2020, we’ve moved from strategy to sustained execution, strengthening planning, markets and operations to meet new realities.

Learn more in the news release: https://t.co/afH0WC2EsM.

#GridReliability #CriticalInfrastructure #GridInnovation #ReliabilityImperative #EnergyTwitter

[Midcontinent ISO @MISO_energy]

While MISO offices are closed today in observance of President's Day, our grid operators are working around the clock to ensure grid reliability across our region.

#PresidentsDay

[Midcontinent ISO @MISO_energy]

The grid remains stable and MISO has ended its EEA2. Extreme weather will continue over the next few days, and MISO and our members continue to monitor conditions very closely.

MISO is currently in a Maximum Generation Warning, which is a notification to prepare for a 𝘱𝘰𝘴𝘴𝘪𝘣𝘭𝘦 emergency situation. No public action is needed. For additional information and updates visit our website: https://t.co/VaIKPLLoHh.

[Midcontinent ISO @MISO_energy]

Due to significant winter weather, MISO has issued an Energy Emergency Alert 2 (EEA2) for our North and Central regions. EEA2 is triggered when MISO is facing an energy shortage and needs to increase generation available to meet demand. At this time, MISO does not have a need for public conservation.

The extreme cold is causing power usage to increase, and we are also seeing unplanned generator outages. By declaring EEA2, MISO operators can access emergency generation not available under normal conditions. Our operators may also purchase emergency generation from neighboring grids if available.

The EEA 2 declaration is scheduled to last until 11 a.m. E.S.T. Please continue to follow our website for additional information: https://t.co/fLLIQR1rRd.

[Midcontinent ISO @MISO_energy]

We are closely monitoring winter weather conditions as the storm approaches the MISO region.

Our team has taken steps to prepare and is coordinating with members, including declaring Conservative Operations, which is a requirement to defer, delay or recall any non-essential maintenance.

We work with our members year-round to prepare for extreme weather operations, including enhancements to forecasting capabilities, dynamic reserves and outage coordination processes.

At this time, grid conditions are stable. Visit our website for the latest updates: https://t.co/QpXWweOaVf.

#WinterStorm #GridResilience #GridReliability #PowerGrid

[Entergy Arkansas @EntergyArk]

Extreme winter weather is expected to move into Arkansas this week and our teams are ready. ❄️

Heavy snow and ice can bring down power lines. We’re adjusting resources to help ensure reliable service. We also encourage customers to have a plan. 👉 https://t.co/mD54N7IjhQ.

[Midcontinent ISO @MISO_energy]

With winter weather forecasted to impact parts of the MISO region this weekend, stay up to date on the latest grid conditions by visiting our website: https://t.co/71mPiXsLno.

MISO works behind the scenes to keep power flowing across the region. Our team is prepared and will be working around the clock to monitor conditions and manage the grid as weather conditions evolve.

#EnergyTwitter

[Midcontinent ISO @MISO_energy]

MISO offices are closed today in observance of Martin Luther King Jr. Day and will resume regular business hours tomorrow.

Today, we honor Dr. King’s legacy of service, leadership and commitment to strengthening communities. His example continues to inspire reflection, action and positive change.

#MLKDay #CommunityImpact #Service

[Midcontinent ISO @MISO_energy]

Two competitive transmission projects are moving forward with developers selected. Visit MISO's News Center to learn more: https://t.co/YcajedUENn.

Viridon has been selected as the developer for the Wisconsin Southeast 345 kV Project (WISE) and @AEPTransource as the developer for the Bell Center – Columbia – Sugar Creek – IL/WI State Line 765 kV Project (BECI).

#EnergyNews #EnergyTwitter

[Midcontinent ISO @MISO_energy]

Learn how MISO is strengthening grid reliability through a strategic collaboration with @Microsoft: https://t.co/DdxQpVGyPv

By bringing together cloud, AI and advanced analytics, MISO is improving system modeling, enhancing real-time situational awareness and accelerating data-driven decisions. The result is a more resilient grid that can better anticipate and respond to changing conditions.

#EnergyNews #EnergyTwitter

[Midcontinent ISO @MISO_energy]

MISO offices are closed today in observance of the new year. While our offices are closed, our focus on reliability remains steady, and our operators continue working around the clock to keep the power flowing.

2026 marks MISO’s 25th anniversary, and throughout the year we’ll be sharing stories that highlight the people, partnerships and progress that continue to power reliability across our region.

Read more about MISO’s 25th anniversary and what’s ahead in 2026: https://t.co/oEktHKjZQB.

Wishing everyone a bright and energized start to the year ahead!

#2026 #MISO25YearsOfReliability