Producer
Regal Rexnord (Marathon Electric)
Regal Rexnord Corporation (Beloit, WI; NYSE: RRX; ~$6.5B revenue) produces industrial alternators and generators under the Marathon Electric brand — one of the oldest and most recognized AC generator brands in North America. Marathon Electric was founded in 1913 in Wausau, Wisconsin; it became part of Regal-Beloit, which merged with Rexnord in 2021 to form Regal Rexnord. Marathon alternators range from 5 kW to 3,000 kW; widely used in U.S. standby and prime power applications. Marathon maintains manufacturing in Wausau, WI and sourcing from lower-cost locations. Estimated 8-12% North American market share in industrial genset alternators, though global share is smaller (~5-8%) given Stamford and Leroy-Somer dominance in international markets.
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Industrial Electrical (Motors, Generators)
55%Power Efficiency (Commercial/Residential)
20%Power Transmission (Rexnord)
25%
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Did you know2024
Regal Rexnord is both the supplier of Marathon Electric alternators (for backup generator sets at hospitals and data centers) AND the supplier of the electric motors inside HVAC systems, pool pumps, and commercial refrigeration at those same facilities. A Regal Rexnord manufacturing disruption simultaneously affects: the backup power supply chain (no new alternators for hospital generators), the HVAC supply chain (no fan motors for air conditioning), and the industrial power transmission supply chain (no couplings/gears for conveyor systems). The company is embedded simultaneously in the critical infrastructure resilience supply chain AND the everyday facility operations supply chain — both sides of the power-use-and-backup equation at the same customer sites.
Regal Rexnord Corporation ↗Origin2023
Marathon Electric was founded in 1913 in Wausau, Wisconsin — a lumber and paper milling city in central Wisconsin whose industrial motor needs shaped Marathon's early product line. The company named itself after Marathon County (itself named for the Battle of Marathon, 490 BC — the legendary endurance run). Marathon became one of North America's most recognized industrial AC generator and motor brands through the 20th century. Regal-Beloit Corporation acquired Marathon in 2003, then merged with Rexnord Corporation in 2021 to form Regal Rexnord — creating a comprehensive electrical and mechanical motion control company with multiple legacy industrial brands.
Regal Rexnord Corporation ↗