SDMO (Kohler-SDMO) Generators

SDMO Industries, now operating as Kohler-SDMO, is one of the three largest generator set manufacturers globally alongside Caterpillar and Cummins. Founded in Brest, France in 1966 and acquired by Kohler in 2005, SDMO produces over 40,000 generator sets per year with power ratings spanning 1 kW portable units to 3,300 kW industrial installations. Manufacturing is distributed across four countries — the primary plant in Brest, France, plus facilities in Spain, India, and Brazil — giving SDMO a global production footprint that most competitors cannot match outside of Caterpillar. The company's defining characteristic is engine-agnosticism: unlike Cat (which uses its own engines) or Cummins (which uses Cummins engines), SDMO sources from multiple engine OEMs and lets the application dictate the engine choice.

The model naming system makes the engine source transparent: J-prefix means John Deere (40-275 kW), D-prefix means Doosan (150-700 kW), V-prefix means Volvo Penta (275-700 kW), M-prefix means Mitsubishi (400-2,500 kW), and K-prefix means Kohler KDI (10-40 kW). Product lines are organized into three tiers. The residential Resa and Technic series cover home standby needs under 20 kW. The commercial Pacific and Atlantic series target mid-range standby and prime power applications from 20 kW to roughly 500 kW. The industrial X-series handles heavy-duty power up to 3,300 kW for data centers, mining, and utility-scale projects. SDMO also has a strong presence in the rental fleet market, manufacturing ruggedized units with features like forklift pockets, bunded fuel tanks, and quick-connect panels designed for frequent deployment and transport.

In North America, SDMO competes primarily in the 100-800 kW commercial standby market, where their pricing is typically 5-15% below Cummins and Cat for equivalent power ratings. The 2005 Kohler acquisition brought access to Kohler's 800+ North American dealers and service centers, and the combined Kohler-SDMO portfolio gives specifying engineers unusual flexibility — Kohler-branded units for domestic projects where the brand carries weight, and SDMO-branded units where the multi-engine strategy or European engineering heritage is the selling point. Kohler Co. was itself acquired by Platinum Equity in 2024, with the power division rebranding to Rehlko, though SDMO's engineering operations in Brest and its manufacturing network remain unchanged. For facility managers already standardized on Kohler controls, SDMO offers a natural expansion path into larger power ratings and multi-engine configurations that Kohler's own product line does not cover.