MADER SUPPLY, LLC

Mader Supply, LLC specializes in the design, procurement, and installation of high-reliability electrical components and systems for critical federal infrastructure. Their core capabilities center on manufacturing and supplying precision electrical parts—including capacitor, resistor, and inductor assemblies, compression deadends, and corona shield rings—alongside field installation and repair of electrical switching systems. The company demonstrates deep technical expertise in high-voltage transmission components, insulation systems, and conductor termination hardware, serving applications where thermal stability, dielectric integrity, and mechanical durability are paramount. Their ability to deliver custom-engineered electrical solutions under tight operational constraints sets them apart, particularly in environments requiring non-disruptive field repairs and mission-critical component replacement. Mader Supply has established a consistent relationship with the Department of Energy, delivering specialized electrical components for transmission and distribution systems, including deadend insulator projects and warehouse-grade conductor hardware. They also support the Department of the Interior with field-based electrical contractor services, specifically repairing transfer switches in remote or protected facilities. These engagements reflect a pattern of trusted, mission-aligned partnerships focused on grid resilience and infrastructure longevity. Their industry focus lies in the manufacturing of miscellaneous electrical equipment and components, alongside electrical contracting services for specialized installations. This dual focus enables them to bridge the gap between component-level engineering and on-site implementation, positioning them as a niche supplier for agencies requiring integrated electrical solutions beyond standard off-the-shelf procurement. As a Women-Owned Small Business certified under the SBA’s 8(a) and WOSB programs, Mader Supply leverages its small business status to provide agile, responsive support to federal clients. Based in North Highlands, California, the company serves federal infrastructure projects across the western U.S., with a strategic emphasis on energy and land management agencies requiring technically precise, compliant electrical solutions.