PFISTERER Holding SE develops, manufactures, and sells technology for connecting and insulating electrical conductors at power-grid interfaces, from generation and transmission through distribution. Founded in 1921, the independent company is headquartered in Winterbach near Stuttgart and operates 17 locations across 15 countries, including five plants. Its products serve power suppliers, grid operators, and OEMs worldwide.
Penn-UnionFounded in 1928, Penn-Union is a U.S. designer and manufacturer of electrical power and grounding connectors, with its production facility and office complex in Edinboro, Pennsylvania. The company specializes in mechanical and compression connectors and related products, supported by an in-house foundry, machine shop, engineering department, and test laboratory. It serves electrical distribution, construction, utilities, power transmission, industrial, telecommunications, renewable energy, aerospace, and rail markets.EDINBORO, PA
Hitachi EnergyHitachi Energy is the energy arm of Hitachi Group and a global electrification and power-technology company headquartered in Switzerland. It develops and supplies technologies for electricity networks, including power transformers, high-voltage products, and grid-integration systems. The company reports operations in 60 countries, an installed base in more than 140 countries, and over 56,000 employees.MT PLEASANT, PA
Pittsburgh Electrical InsulationFounded in 1947 by Theodore Paul, Pittsburgh Electrical Insulation is a Pittsburgh-area electrical insulation manufacturer whose history includes developing the patented fiberglass armature banding tape that became a global standard for DC equipment. The company has since grown from a distributor into a manufacturer and converter serving OEM and repair customers, with U.S.-based production expanded through its 2020 acquisition of Fibertek’s electrical products division.MUNHALL, PA