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Large Energy Group Files Conditional Objection to Interstate Power and Light Company's Revised Regional Transmission Service Tariff

Strategic Insights

— 1 min read

The Large Energy Group (LEG), representing various Iowa-based energy users, has submitted a conditional objection to Interstate Power and Light Company's (IPL) revised Regional Transmission Service (RTS) tariff. The objection was filed on May 19, 2025, with the Iowa Utilities Commission, expressing concerns regarding the 2024 reconciliation of actual costs and revenues and the proposed revisions to the RTS rates. LEG anticipates receiving additional information from IPL regarding transmission accounting issues and will require additional time to review the responses.

Key Takeaways:

  • The Large Energy Group has filed a conditional objection to Interstate Power and Light Company's revised Regional Transmission Service tariff.
  • The objection focuses on the 2024 reconciliation of actual costs and revenues and the proposed revisions to the RTS rates.
  • LEG anticipates receiving additional information from IPL regarding transmission accounting issues and will require additional time to review the responses.
  • The Iowa Utilities Commission has been notified of the filing, with a status report expected on or before June 2, 2025.
  • IPL has proposed to include Midcontinent Independent System Operator (MISO) Return on Equity (ROE) refund amounts received in February and March 2025.
  • The conditional objection has been filed by the Large Energy Group, representing Iowa-based energy users such as AG Processing, Amsted Griffin Wheel, and International Flavors and Fragrances.

Statistics:

  • The revised RTS tariff was submitted by IPL on April 28, 2025.
  • The Iowa Utilities Commission has received the objection filing on May 19, 2025 (TF-2025-0019).
  • LEG will file a status report regarding this matter on or before June 2, 2025.
  • The Large Energy Group consists of 17 Iowa-based energy users, as listed in the objection filing.
  • Reece Davis is the Energy Manager at AG Processing.

Sources:

  • STATE OF IOWA UTILITIES DIVISION BEFORE THE IOWA UTILITIES COMMISSION IN RE: INTERSTATE POWER AND LIGHT COMPANY DOCKET NOS. EAC-2025-0150, RFU-2025-0002, TF-2025-0019 CONDITIONAL OBJECTION OF THE LARGE ENERGY GROUP.
  • Filed with the Iowa Utilities Commission on May 19, 2025, TF-2025-0019.

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