The ISO Market Edge Newsletter

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Key market changes in the ISO/RTO power markets:

  • Technical or operational insights that impact market participants

  • Commentary from subject-matter experts within Hartigen's team

  • Analysis to help market participants stay ahead of trends and developments in energy market operations

  • Understanding of market shifts, initiatives, and operational or regulatory developments

  • Relevant updates and enhancements to the PowerOptix platform

MISO Katie Zautke MISO Katie Zautke

MISO FTR Market Update: Bid or Offer Curve Changes for the 2026/2027 Annual Auction

Beginning with the April 2026 Annual FTR Auction, participants will be required to submit stepped bid and offer curves with up to 20 discrete bid points, replacing more flexible curve structures used in prior auctions. In addition, extraneous or invalid bid points will no longer be permitted, and bid curves must comply with stricter validation rules.

These updates are designed to improve auction price efficiency, transparency, and clearing accuracy by ensuring that submitted bids more precisely reflect participant intent and can be consistently processed by the market clearing engine.

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