WEC Energy Group Inc (NYSE: WEC) is a regulated utility company that delivers electricity and natural gas to customers across the Upper Midwest and parts of Illinois. Revenue comes from rate-regulated electricity generation, transmission, and distribution, as well as natural gas distribution, with rates set by state public utility commissions. The 10-K filed 2026-02-20 (accession 000078332526000018) identifies four operating segments: Utility Energy Operations, Electric Transmission, Non-Utility Operations, and a parent holding structure. The utility operations segment covers electric and gas service to retail customers, while the electric transmission segment reflects WEC's ownership interest in transmission affiliates. Non-utility operations represent a smaller portion of the overall business. As a rate-regulated utility, WEC earns an authorized return on its rate base, making capital investment in infrastructure the primary driver of earnings growth. The company is headquartered in Milwaukee, Wisconsin and files as a well-known seasoned issuer.

Revenue model

Rate-regulated utility revenue: electricity and natural gas rates approved by state public utility commissions, collected from retail customers based on volumetric usage and fixed charges. Returns are tied to authorized rates on invested capital in generation, transmission, and distribution assets.

Products and services

Regulated electric generation and distribution; regulated natural gas distribution; electric transmission (via ownership interests in transmission affiliates); non-utility energy operations.

Customers and end markets

Retail electricity and natural gas customers across residential, commercial, and industrial end markets in the Upper Midwest and Illinois. Specific customer counts are not detailed in the available filing excerpts.

Value-chain role

Vertically integrated regulated utility: electric generation, transmission ownership interests, and distribution of electricity and natural gas to end-use retail customers.

Geographic exposure

Upper Midwest United States and parts of Illinois, based on filing segment descriptions in the 10-K filed 2026-02-20.

Source: SEC 10-K, filed 2026-02-20

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