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Energy industries

Wisconsin Public Service Corporation Submits Filing to Update Tariffs in Compliance with Order No. 898

Strategic Insights

— 2 min read

Wisconsin Public Service Corporation has submitted a filing to the Federal Energy Regulatory Commission to update its tariffs in compliance with Order No. 898, which addresses the accounting treatment of certain renewable energy assets. The filing proposes to revise the Attachment A and Attachment B formula rates in the Tariffs to align the underlying accounts used in the formula with the new functions and accounts adopted in Order No. 898. This ensures that Wisconsin Public Service Corporation will track its costs in accordance with Order No. 898's directives while preserving the existing structure and ratemaking treatments reflected in the Tariffs.

Key Takeaways:

  • Wisconsin Public Service Corporation has submitted a filing to update its tariffs in compliance with Order No. 898, which addresses the accounting treatment of certain renewable energy assets.
  • The filing proposes to revise the Attachment A and Attachment B formula rates in the Tariffs to align the underlying accounts used in the formula with the new functions and accounts adopted in Order No. 898.
  • The proposed changes include adding line numbers and/or adding references to reflect the breakout of new functions and accounts from Order No. 898, such as renewable plant accounts and energy storage plant accounts, among others.
  • Wisconsin Public Service Corporation requests that the Commission accept this filing effective December 31, 2025, which is sixty-three (63) days after the date of this filing.
  • The company requests waiver of Section 35.13 of the Commission's regulations to the extent applicable to this filing.
  • Wisconsin Public Service Corporation has served a copy of this filing on the persons listed in Attachment D to this filing letter.

Statistics:

  • The proposed effective date of the filing is December 31, 2025, which is sixty-three (63) days after the date of the filing.
  • The Commission's regulations to be waived, Section 35.13, allows for a waiver of the requirement to submit Period I and Period II data in formula rate filings.
  • The company requests waiver of any other applicable requirement in 18 C.F.R. Part 35 for which waiver has not been specifically requested.
  • Wisconsin Public Service Corporation is a public utility providing electricity and natural gas service to customers in northeast and central Wisconsin.

Sources:

  • https://elibrary.ferc.gov
  • 16 U.S.C. § 824d
  • 18 C.F.R. Part 35 (2025)
  • Wisconsin Public Service Corporation - WPSC Tariff Database, W-1A Attachment A, Capacity Rate (22.0.0); W-1A Attachment B of Rate Schedule W-1A (5.0.0); RS 87 Attachment A, Capacity Rate (22.0.0); Attachment B, Monthly Energy Rate (6.0.0).
  • Order No. 898, 183 FERC P 61,205 (2023) (Order No. 898)

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