Otter Tail Power Company

What Otter Tail Power Company does

Otter Tail Power Company is a regulated investor-owned electric utility founded in 1907 and headquartered in Fergus Falls, Minnesota. It generates and distributes electricity to more than 131,000 residential, commercial, and industrial customers across a three-state service territory covering Minnesota, North Dakota, and South Dakota. Generation sources include coal, hydroelectric, natural gas and oil, solar, and wind, with a 15-year Integrated Resource Plan filed for the 2027-2041 horizon governing the future mix. The transmission and distribution network is being actively expanded through approved projects including the Big Stone South to Alexandria (BSSA) 345-kV line and the Jamestown to Ellendale (JETx) line.

The company operates as a state-sanctioned monopoly within its assigned service territories, with rates approved by the Minnesota Public Utilities Commission, the North Dakota Public Service Commission, and the South Dakota Public Utilities Commission. Revenue is generated through monthly recurring subscription-style billing under regulated tariffs, with rate cases and riders used to recover transmission, environmental, and renewable investments. Otter Tail Power consistently ranks among the lowest-cost utilities in the United States, posting residential rates materially below state averages in each jurisdiction and achieving 99.98% power reliability. A filed Minnesota rate case seeking approximately 17.7% bill growth, the Project Big Stone thermal battery partnership with Antora Energy and POET delivering 50 MW of firm industrial power, and recent executive succession planning round out the current strategic posture.

The business is a wholly-owned subsidiary of Otter Tail Corporation, a publicly traded holding company on NASDAQ under the ticker OTTR, with parent market valuation of approximately $3.65 billion. Distribution channels are direct utility service — enterprise field relationships for large industrial customers, direct relationships with commercial customers, and self-serve online portals (myaccount.otpco.com) plus customer service centers for residential accounts. Customer-facing products beyond commodity electricity include PowerProfiler energy management, the Integrated Building Design Plus program, CoolSavings, rebates, cold-climate heat pump offerings, and payment assistance programs. The company is actively pursuing transmission build-out and industrial load growth while operating within a conventional cost-of-service regulatory framework.

Name

Otter Tail Power Company

Legal name

Otter Tail Power Company

Website

https://otpco.com

Company type

Private

Founded year

1907

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Otter Tail Power Company is a regulated electric utility founded in 1907 that generates and distributes electricity to over 131,000 residential, commercial, and industrial customers across Minnesota, North Dakota, and South Dakota, operating as a subsidiary of Otter Tail Corporation (NASDAQ: OTTR).

Ownership category

akta.pro rank

Product category

Electric Utility Services

NAICS

Electric Power Generation, Transmission and Distribution (2211), Electric Power Transmission, Control, and Distribution (22112)

SIC

Electric Services (4911)

akta.pro primary industry

Electric Distribution System Owners (Wires-Only Companies) (EUADABAI)

akta.pro secondary industry

HV Transmission Asset Owners (Transmission Companies/Transcos) (EUADAAAC)

Keywords

• Electric utility services
• Electricity generation
• Power transmission
• Energy distribution
• Regulated electric utility

Headquarters

HQ city

Fergus Falls

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Infrastructure, Supply Chain, Operations, Personnel, Technology or R&D, Others

Revenue model

1. Electric Utility Service: Regulated electric utility providing generation, transmission, and distribution services to customers in Minnesota, North Dakota, and South Dakota. Revenue generated through regulated rates approved by state public utility commissions. Company invests in infrastructure to grow rate base and earnings.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels6 records

Core offering

Otter Tail Power Company is a regulated investor-owned electric utility that generates, transmits, and distributes electricity to more than 131,000 residential, commercial, and industrial customers across Minnesota, North Dakota, and South Dakota. The company generates electricity from coal, hydroelectric, natural gas and oil, solar, and wind sources, and delivers it through owned transmission and distribution infrastructure at regulated rates among the lowest in the nation. It also offers demand-response programs, energy-efficiency rebates, and online account management tools to its customers.

Product overview

Otter Tail Power Company is a regulated electric utility providing comprehensive electricity services as a single, unified offering. The company operates as both a generation and distribution utility, producing electricity from coal, hydroelectric, natural gas and oil, solar, and wind sources, then transmitting and distributing it to customers across Minnesota, North Dakota, and South Dakota. Customer-facing products and programs include online account management through the My Account Portal, energy management tools like PowerProfiler, demand-response programs under Energy Control, rebates and efficiency programs for both residential and business customers, and specialized offerings such as CoolSavings and Integrated Building Design Plus. The company emphasizes reliability (99.98% uptime) and low-cost pricing, supported by a comprehensive transmission and distribution infrastructure including new transmission projects like Big Stone South to Alexandria and Jamestown to Ellendale.

Differentiator

Problem solved

Functional benefit

Products and services

• Electric Utility Service Regulated generation, transmission, and distribution of electricity to residential, commercial, and industrial customers across Minnesota, North Dakota, and South Dakota, with power available more than 99.98% of the time.
• Cold-Climate Heat Pump Year-round cooling and heating equipment solution marketed to residential customers for home comfort and energy savings.

Quantifiable outcome

• 99.98% power reliability
• +1 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Four partnerships are on record, tiered core and major.

• Montana-Dakota Utilities Co. (MDU)coreStrategic or Co-development Partner · 24 June 2026JETx (Jamestown to Ellendale transmission line) partnership. MDU and Otter Tail Power received North Dakota PSC approval for the transmission line that creates a high-voltage loop between existing substations, enhancing reliability and reducing transmission congestion.
• Antora EnergymajorStrategic or Co-development Partner · 19 May 2026Antora Energy and POET commissioned a 5 GWh thermal energy storage system at POET's Big Stone City facility. Antora's thermal batteries deliver 50 MW of firm, around-the-clock energy. Project advanced from construction to energy delivery in under 12 months. Otter Tail Power developed a specialized electric rate approved by the South Dakota PUC.
• POETmajorStrategic or Co-development Partner · 19 May 2026POET, the world's largest biofuel producer, partnered with Antora Energy and Otter Tail Power for Project Big Stone - a 5 GWh thermal battery installation delivering affordable energy to POET's South Dakota bioprocessing facility.
• Western Minnesota Municipal Power Agency (WMMPA)coreStrategic or Co-development PartnerWMMPA and Otter Tail Power received Route Permit approval for Minnesota portion of the Big Stone South to Alexandria (BSSA) 345-kilovolt transmission line. Partnership to deliver reliable, low-cost electricity.

Scale indicators5 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• NorthWestern Energy Group: Regulated electric and natural gas utility serving Montana, South Dakota, and Nebraska. Comparable mid-cap IOU with overlapping South Dakota service territory and similar customer/demographic profile.
• ALLETE / Minnesota Power: Regulated electric utility serving northern Minnesota with a diversified generation mix including hydro, wind, and coal. Highly comparable to Otter Tail in jurisdiction (Minnesota PUC), service profile, and generation transition challenges.
• Basin Electric Power Cooperative: Wholesale electric generation and transmission cooperative serving customer-cooperatives across the upper Midwest, including North and South Dakota. Operates generation and HV transmission in the same regional grid as Otter Tail and shares coal-to-renewables transition exposure.
• Black Hills Corporation: Investor-owned utility holding company serving electric and gas customers across South Dakota, Montana, Wyoming, Colorado, Nebraska, Kansas, Arkansas, and Iowa. Comparable mid-cap IOU with similar rural service territory and regulated rate-base earnings model.
• Montana-Dakota Utilities (MDU Resources): Investor-owned regulated electric and natural gas utility serving North Dakota, Montana, South Dakota, and Wyoming. Otter Tail's JETx transmission line partner; comparable in scale, regulated rate-base model, and geographic overlap in the upper Midwest.

Others

• Western Area Power Administration (WAPA): Federal power marketing administration that owns and operates high-voltage transmission across the western and upper Midwest U.S. Interconnects with Otter Tail's grid, shares regional transmission reliability mandates, and is a counterparty in many of the same regional planning processes.
• MISO (Midcontinent Independent System Operator): Regional transmission organization coordinating bulk power across the upper Midwest. Not a competitive peer but the grid operator that Otter Tail's transmission assets interconnect with and the entity whose planning, capacity, and ancillary service markets directly shape OTP's transmission economics.

Broad incumbents

• Evergy: Investor-owned regulated electric utility serving Kansas, Missouri, Oklahoma, and Arkansas. Broader incumbent utility with overlapping rate-base growth dynamics and renewable transition exposure, but geographically distinct.
• Xcel Energy: Large multi-state regulated electric and gas utility with dominant Minnesota operations. Operates in the same Minnesota regulatory environment and serves similar end markets, but at much greater scale and broader geographic reach.

Emerging players

• Antora Energy: Thermal battery technology company that partnered with Otter Tail Power and POET on Project Big Stone. Comparable only in the sense of co-developing firm-clean industrial power solutions for utilities; not a regulated utility peer but a key technology and ecosystem partner.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/user/OtterTailPowerCo
• Facebookfacebook.com/OtterTailPowerCo
• LinkedInlinkedin.com/company/otter-tail-power-company
• Xx.com/OtterTailPwrCo

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Otter Tail Power Company