Mission Critical Group (MCG) designs, manufactures, integrates, and services electrical infrastructure for mission-critical facilities. The company operates more than 20 U.S. manufacturing facilities and reports over 1.7 million square feet of U.S. manufacturing capacity. Its work supports data centers, manufacturing plants, and energy infrastructure across North America.
NETA ATS
Myers Power Products, IncMyers Power Products, Inc. is a U.S. manufacturer with nearly 1 million square feet of production space across five states, employing more than 1,000 American workers. The company is known for building made-to-order electrical distribution equipment for infrastructure customers, including rail and transit operators, utilities, and industrial users.NORTH CANTON, OH
RusselectricRusselectric designs and builds high-integrity power control systems for facilities where an outage can threaten lives, property, data, or business continuity. Its U.S.-manufactured systems include high-speed switching equipment and are custom-built for mission-critical settings such as hospitals, airports, and defense facilities. Siemens supports the Russelectric portfolio with factory-trained field technicians for installation, maintenance, and upgrades.NOVA, OH
IntegraFounded in 2009 as Critical Project Services, Integra designs, manufactures, and constructs turnkey mission-critical data center infrastructure. The company became vertically integrated through its manufacturing operations, which include facilities in the United States and Canada, and it unified its brands under Integra in 2025. It delivers modular data center projects from planning and design through commissioning and ongoing support.AKRON, OH
MersenMersen designs and manufactures electrical power equipment and advanced-materials technologies for industrial systems and essential infrastructure. The global industrial group operates production facilities and local offices in 32 countries across five continents, supporting applications that range from electric vehicles and renewable energy to aerospace, rail and semiconductor production. Its portfolio includes electrical protection and power-transfer equipment alongside graphite solutions, with most Group sites certified to recognized quality, safety and environmental management standards.ST MARYS, PA