May 7, 2025

Otter Tail Power seeks incentive rates for $761-million grid expansion across Upper Midwest

Otter Tail Power’s transmission investments are part of a grid upgrade spanning the Dakotas and Minnesota, estimated to cost $2.58 billion.

Incentive Application: Otter Tail Power Co. requested approval for incentive rates on three transmission projects, representing a $767 million investment, according to an April 29 filing. These projects, part of MISO's Tranche 2.1 long-range transmission plan, will enhance grid reliability, mitigate weather risks, and advance decarbonization efforts. Portfolio Power-Up: MISO's 2024 Transmission Expansion Plan outlines $21.8 billion in needed long-range ...

Details:

Filing Date: April 29, 2025

Docket Numbers:

ER25-2085

Short Summary:

Otter Tail Power Co. requested approval for incentive rates on three transmission projects, representing a $767 million investment, according to an April 29 filing. These projects, part of MISO’s Tranche 2.1 long-range transmission plan, will enhance grid reliability, mitigate weather risks, and advance decarbonization efforts.

Impact Level:

Categories:

Rate & Tariff Tracker

Tags: Grid Expansion, Grid Modernization, Transmission, Transmission Rate Incentives

Entities: Otter Tail Power Co.

Markets: Midcontinent Independent System Operator (MISO)

Regions: Central

States: Minnesota, North Dakota, South Dakota

Regulators: FERC

Courts:

Documents:

Transmission Rate Incentives – Application