Otter Tail Corp (NASDAQ: OTTR) is a diversified holding company that operates an electric utility alongside manufacturing businesses. The company generates revenue through regulated electric utility rates, as well as product sales across its non-utility manufacturing segments. Based on the 10-K filed February 18, 2026 (accession 000146659326000008), Otter Tail reports two primary operating segments: Electric and Manufacturing. The Electric segment serves customers under rates regulated by state and federal authorities, providing rate-based, capital-intensive returns typical of regulated utilities. The Manufacturing segment produces and sells physical goods, though specific product lines, revenue breakdowns, and segment percentages are not supported by the available filing excerpts. Otter Tail is headquartered in the upper Midwest. The 10-K was filed for the fiscal year ended in 2025. Executive officer information is listed as of February 18, 2026.

Revenue model

Regulated electric utility rates from the Electric segment, supplemented by product sales revenue from Manufacturing segment operations. Rate-based utility revenue is subject to state and federal regulatory approval.

Products and services

Regulated electric utility service; manufactured products across non-utility business segments. Specific product names and brands are not supported by the available filing excerpts.

Customers and end markets

Electric utility customers served under regulated rates. Specific customer counts, customer concentration data, and end market breakdowns are not supported by the available filing excerpts.

Value-chain role

Vertically integrated regulated electric utility operator and diversified manufacturer.

Geographic exposure

Upper Midwest United States. Specific state service territories and geographic revenue mix are not supported by the available filing excerpts.

Source: SEC 10-K, filed 2026-02-18

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