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December 22, 2025

Midcontinent Independent System Operator (MISO)

Entergy Touts $1.3B in Savings Since Joining MISO
Customers of Entergy’s five utility subsidiaries have saved about $1.3 billion since they joined MISO in 2013, the company announced.
MISO Group to Probe LMR Saturation
MISO’s Reliability Subcommittee will next year examine whether the RTO’s footprint is suffering from an excess of load-modifying resources.
Batteries Will Have Their Day in MISO, Experts Say
Energy storage systems will inevitably take hold in MISO as costs decline, but the outlook for technologies outside lithium-ion batteries is less certain.
MISO Board OKs $4 Billion MTEP 19
MISO’s Board of Directors unanimously approved the 2019 MISO Transmission Expansion Plan (MTEP 19) - a $4 billion portfolio consisting of 480 projects.
No-go for MISO Board Election Changes
MISO’s Advisory Committee has decided not to pursue changes to how the RTO vets and selects its Board of Directors after more than a year of discussion.
MISO Board of Directors Briefs: Dec. 12, 2019
MISO’s Board of Directors will remain unchanged heading after the same chairman and three incumbent directors were elected to retain their positions.
MISO Avoids Fall Emergencies
MISO avoided maximum generation alerts and events this fall despite dealing with record-breaking temperature swings in its southern footprint.
MISO Mulls Linking Interconnection, MTEP Planning
A new task team is considering sequencing parts of MISO’s transmission planning with network upgrades identified in generator interconnection studies.
Stakeholders Debate MISO Planning Futures
MISO stakeholders debated whether the RTO is being too conservative in anticipating industry shifts in its new futures scenarios for transmission planning.
MISO RASC Briefs: Dec. 3, 2019
MISO says it will look to make improvements to the capacity testing process after sifting through results from its generators and discovering errors.

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