April 29, 2026
MISO Summer Capacity Auction Prices Remain Elevated But Lower Than Prior Year: Non-Summer Prices Drop Steeply
The Midcontinent ISO posted results from the 2026-27 Planning Resource Auction (capacity auction)
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Midcontinent Independent System Operator (MISO)
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October 2, 2025
Default Service Procurement Results In Some Capacity Prices Exceeding $800/MW-Day
The Illinois Commerce Commission approved the fall capacity procurement for default service customers at Ameren Illinois
May 27, 2025
MISO Undergoes Load Shed On May 25
The Midcontinent ISO on May 25 stated that MISO issued a load shed request of approximately 600 MW in Louisiana to Entergy and Cleco Power to maintain the reliability of the bulk electric system.
December 17, 2024
Vistra Extends Operations of MISO Generating Unit, Delays Retirement; Also Brings Two Utility-Scale Solar Facilities Online
Vistra today announced that…
February 1, 2024
Caldwell Muni Utility Applies At Texas PUC To Join ERCOT
The City of Caldwell, Texas formally filed…
January 29, 2024
Texas Muni Utility Readies Application To Switch From MISO To ERCOT
A Texas muni requested at the Texas PUC the issuance of a docket number for…
July 25, 2022
Illinois Orders Ameren To Conduct Study Of Continued MISO Membership, If MISO A "Good Fit" For Retail Choice
The Illinois Commerce Commission ordered Ameren Illinois to conduct an analysis and study of its continued membership in the Midcontinent Independent System Operator (MISO)
May 27, 2022
MISO Transmission Customers Seek FERC Order Allowing Load To Exit System Without Paying Capacity Charges From Current Tag
The Coalition of MISO Transmission Customers (CMTC) filed a complaint at FERC asking FERC to…
April 18, 2022
MISO Zone 4, 7 Capacity Prices Spike To Nearly $250/MW-day From $5 In Last Year's Auction
Such Zones At, "Increased Risk Of Needing To Implement Temporary, Controlled Load Sheds"
The Midcontinent ISO has released pricing from its capacity auction for the 2022-23 delivery year
February 7, 2022
Illinois AG Seeks Order Requiring Capacity Supplier To Refund $428 Million To Customers
Illinois Attorney General Kwame Raoul has filed a motion with the Federal Energy Regulatory Commission (FERC) asking that Dynegy, Inc. (Dynegy) be required to refund more than approximately $428 million to customers in central and southern Illinois as the AG alleged such customers, "were overcharged…
October 28, 2021
Update: Texas PUC Docket Housing Customer Comments Seeking Choice In Non-ERCOT Areas Also Expanded To El Paso Electric, In Addition To SPS, SWEPCO, Entergy
During today's open meeting, the Texas PUC expanded the recently assigned Control Number 52760, originally styled as, "Investigation into Need for Customer Choice in Areas of Texas Served by Entergy Texas, Southwestern Public Service Company, and Southwestern Electric Power Company," to also include…
October 27, 2021
Texas PUC Issues Control Number For Investigation Of Need For Customer Choice At SPS, SWEPCO, In Addition To Entergy
The Texas PUC has assigned Control Number 52760 for a proceeding styled as, "Investigation into Need for Customer Choice in Areas of Texas Served by Entergy Texas, Southwestern Public Service Company, and Southwestern Electric Power Company."
October 7, 2021
Texas PUC Commissioner: We Should "Re-Look" At Transition To Competition At Entergy Texas
Invites Stakeholder Comment On Whether It's "Time To Move Forward" With Choice At Entergy Texas
During today's Texas PUC opening meeting, Commissioner Jimmy Glotfelty said that the PUC needs to "re-look" at a transition to competition at Entergy Texas
August 9, 2021
Appeals Court Remands Alleged Capacity Market Price Manipulation Complaint To FERC; Says FERC's "Breezy" Analysis That No Manipulation Occurred Lacked Support
The U.S. Court of Appeals for the D.C. Circuit has remanded to FERC a complaint concerning the results of the 2015 Midcontinent ISO capacity auction, finding that FERC's conclusion that the outcome of the auction was just and reasonable, because the auction complied with the applicable tariff…
April 6, 2021
Vistra Announces Earlier Retirement Of Power Plant
Vistra and its subsidiary, Electric Energy, Inc., are today announcing the retirement of the Joppa Power Plant by Sept. 1, 2022, three years earlier than previously disclosed.
April 15, 2020
MISO Capacity Price For Ameren Illinois Zone Jumps 67%
Michigan DTE/Consumers Zone Capacity Price Spikes To Over $250/MW-day
The Midcontinent ISO has released pricing from its capacity auction for the 2020-21 delivery year
March 19, 2020
FERC Denies Rehearing Of Prior Finding That MISO Zone 4 Capacity Rates From 2015/16 Auction Were Just And Reasonable
FERC has denied rehearing of its prior finding that the results from the Midcontinent ISO 2015/16 Planning Resource Auction for Local Resource Zone 4 were just and reasonable
August 21, 2019
Vistra Energy To Close Four Power Plants
Vistra Energy and its subsidiaries today announced the four Illinois power plants that will retire in order to meet the requirements of the recently approved revisions to the Multi-Pollutant Standard (MPS) rule imposed by the Illinois Pollution Control Board (IPCB).
August 9, 2019
PSC Lifts Ban On Non-LSE Third Parties Aggregating Demand Response From Retail Supplier Customers For Bidding Into Wholesale Market
Retains Ban For Utility Supply Customers
The Michigan PSC has lifted a ban on the aggregation of demand response by third parties for bidding into the wholesale market for retail choice load
July 18, 2019
Updated: FERC Finds MISO Zone 4 Capacity Rates From 2015/16 Auction To Be Just And Reasonable
FERC's order states, "We deny Complainants’ allegations that Dynegy exercised market power in the 2015/16 Auction, causing an unjust, unreasonable, and unduly discriminatory Auction Clearing Price in Zone 4. MISO conducted the 2015/16 Auction in compliance with the MISO Tariff, including the Tariff…
April 13, 2019
MISO Capacity Auction Prices Fall For Ameren Illinois Zone, Spike For DTE, Consumers Zone In Michigan
The Midcontinent ISO has released pricing from its capacity auction for the 2019-20 delivery year
November 26, 2018
PSC Opens Investigation Of Demand Response Aggregation Of Retail Supplier Customers, Including Aggregation By Non-LSE Third Parties
The Michigan PSC has opened a proceeding (Case No. U-20348) to examine issues related to the demand response aggregation of customers of retail suppliers (alternatives electric suppliers, or AESs)
November 19, 2018
FERC Grants MISO Waiver Of Offer Cap During Winter
FERC granted the Midcontinent Independent System Operator, Inc. (MISO) a limited waiver of sections 39.2.5 and 40.2.5 of its Open Access Transmission, Energy and Operating Reserve Markets Tariff (Tariff), which establish a $1,000/MWh Energy Offer Price Cap (offer cap) on incremental energy offers in…
July 16, 2018
Court Says Michigan PSC Lacks Authority To Impose Local Capacity Clearing Requirement On Alternative Electric Suppliers (Retail Suppliers)
The State of Michigan Court of Appeals has ruled that the Michigan PSC lacks the authority to require alternative electric suppliers to meet local capacity clearing requirements
June 29, 2018
Michigan PSC Sets Forward Local Capacity Requirement For Retail Suppliers
The Michigan PSC has set the forward local capacity requirements for LSEs, including retail electric suppliers, and adopted related parameters governing the local capacity requirement