The Midcontinent Independent System Operator is a regional transmission organization that plans transmission projects, administers wholesale markets for its membership and manages the flow of electricity in Arkansas, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Minnesota, Mississippi, Missouri, Montana, North Dakota, South Dakota, Texas and Wisconsin. 
MISO’s 2nd Long-range Tx Portfolio Jumps to About $25B
MISO’s second, mostly 765-kV long-range transmission plan could tip past $25 billion with the addition of more projects, stakeholders have learned.
OMS-MISO RA Survey: Potential 14-GW Capacity Deficit by Summer 2029
A relatively low turnout of constructed capacity in recent years could deepen a potential 1-GW capacity deficit in summer 2025 to more than 14 GW by summer 2029, MISO and OMS revealed in a five-year projection.
MISO Readies JTIQ Filings, Hints at More Tx Portfolios with SPP
Two years after announcing its $1.8 billion Joint Targeted Interconnection Queue transmission portfolio with SPP, MISO is putting final touches on FERC filings to make it happen.
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MARC 2024 Displays Mixed Feelings on Transition Feasibility
The 2024 Mid-America Regulatory Conference showcased a tug-of-war of positivity and cynicism over meeting growing demand with a fleet that should evolve faster to meet clean energy goals.
Xcel Energy
Xcel Wins FERC Waiver of MISO Interconnection Rules on Coal-to-Solar Plan
FERC authorized an exception to MISO’s interconnection rights transfer process, allowing two Xcel Energy subsidiaries to cooperate on a replacement of a coal-fired plant with a solar farm.
MTEP 24 up to $5.8B; Clean Energy Group Asks for Alternative to Pricey Entergy Reliability Project
MISO’s 2024 Transmission Expansion Plan increased slightly in cost to $5.8 billion while the Southern Renewable Energy Association requested MISO explore an alternative to an Entergy Texas reliability project.
National Grid Renewables
MISO: New Interconnection Queue Cycle to Wait on MW Cap Filing
MISO said new queue entries must wait while it takes another swing at imposing an annual megawatt cap on its interconnection queue.
FERC OKs MISO Settlement Rules for Widespread Tx Outages

FERC ruled that MISO can apply new settlement practices to generators physically disconnected from the grid during extensive transmission outages triggered by extreme events.

Wisconsin Public Service Commission
Appeals Court Overturns Wis. Ban on DR Aggregation in MISO
A court of appeals has toppled Wisconsin’s longstanding ban on aggregators of demand response participating in wholesale markets.
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MISO Pursuing More Dynamic Regulation Reserves
MISO said a riskier operating environment means it needs a more nuanced approach to its regulation reserve requirements.

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