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December 15, 2025

Midcontinent Independent System Operator (MISO)

AES Indiana
MISO Stakeholders Push to Keep LOLE Working Group
MISO hopes to fold its stakeholder group dedicated to loss of load estimates into its resource adequacy subcommittee by year’s end, but stakeholders disapprove.
Entergy
Entergy Proposes $1.2B in New Orleans Resilience Investments
Entergy New Orleans submitted a filing to the New Orleans City Council detailing its plans to harden electrical infrastructure ahead of future severe weather.
MISO
MISO Monitor Prescribes 5 New Fixes in Annual Market Report
MISO is evaluating new recommendations from its Market Monitor that include transmission reconfiguration plans, reducing out-of-market commitments and more.
MRO
MRO Warns Energy Emergencies Likely in Summer
The Midwest Reliability Organization's summer assessment revealed significant risks in three of its four subregions, potentially leading to energy emergencies.
© RTO Insider LLC
MISO Puts Finishing Touches on $10B Tx Plan, Hunts New Projects
MISO’s $10 billion long-range transmission plan is closer to approval, with the portfolio clearing its first of two board votes on Thursday.
SPP and MISO
​MISO, SPP Commit to Replacing Affected System Studies
MISO, SPP revealed details of their plan to abandon the maligned affected system study process in favor of regular interregional transmission planning studies.
© RTO Insider LLC
FERC Gives MISO More Time on Software Fix
FERC has granted MISO an additional three months on two temporary waivers of its tariff after the grid operator hit delays on software upgrades.
© RTO Insider LLC
MARC Annual Meeting Highlights Transmission Needs
The first meeting of the Mid-America Regulatory Conference in two years focused on transmission needs that are necessary for a fast-changing energy landscape.
© RTO Insider LLC
Overheard at MARC Annual Meeting 2022
Mid-America Regulatory Conference’s annual meeting tackled climate justice, workforce diversity, Order 2222 and the ongoing solar panel investigation.
MISO
MISO Membership to Become More Valuable in Future
MISO expects the savings it delivers to its members under a resource sharing pool to more than triple within 20 years.

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