Full service custom manufacturer and distributor of high power transformers, voltage regulators and oil circuit reclosers (OCRs) and switches. Types of transformers include substation transformers, polemount transformers and padmount transformers. Transformer parts and components are available. Capabilities include rebuilding and remanufacturing. Services include repair, field maintenance, polychlorinated biphenyl (PCB) oil testing, engineering and technical support, field dressing and undressing, PCB and non PCB equipment recycling and disposal, power plant transformer disposal, PCB contaminated electrical equipment commercial storage, environmental, safety and health compliance disposal, field substation teardown and load tap changer (LTC) repair and upgrade. Industries served include power distribution, mining, oil, gas and renewable energy.Contaminated material recycling services. Capabilities include testing, pumping, commercial storage, transportation, field substation teardown and disposal. Contaminated polychlorinated biphenyl (PCB) and non polychlorinated biphenyl (PCB) equipment, oil filled transformers and voltage regulators can be recycled.

Solomon Corporation was founded by Gene Hemmer in 1971 as a small transformer repair shop. Over the decades, the company has grown to become a full-service transformer rebuild and maintenance facility that also specialized in sales and service of distribution transformers, voltage regulators, oil circuit reclosers and switches, as well as transformer parts and components. In 2000, Gene's five children – Joe Hemmer, Phil Hemmer, Tom Hemmer, Katie Platten, and Matt Hemmer – purchased the family business from their father. Armed with Gene's entrepreneurial spirit and a commitment to innovation, the second generation of the Hemmer family added a state-of-the-art commercial storage facility, a paint shop, and new locations in Texas and Colorado.
Today, Solomon Corporation is the largest rebuilder of oil-filled transformers in the nation. Our engineering and technical support staff is unmatched in industry knowledge, field expertise, and accessibility. Our customers include industrial companies, numerous rural electric companies, electrical contractors, and large electric utility companies. And each customer, no matter how large or small, is afforded the dependable equipment, solid warranties, and unmatched service that our Founder Gene Hemmer instilled in the company from day one. In 2013, Solomon Corporation formed a strategic and financial partnership with GFI Energy. GFI Energy, a division of Oaktree Capital Management, specializes in helping companies like Solomon Corporation, who provide services to the electric utility industry. The management team of Solomon Corporation is still led by members of the Hemmer family and the family remains significant shareholders.