At D1 Substations, we specialize in delivering end-to-end substation and high-voltage electrical infrastructure services with precision, safety, and reliability at the core of everything we build.

Founded by industry professionals with 25+ years of hands-on experience, we bring deep technical knowledge, trusted partnerships, and a self-performing construction model that ensures unmatched quality control, faster execution, and cost efficiency on every project.

Based in Pennsylvania, we proudly serve utilities, cooperatives, private developers, and infrastructure partners across the United States. Our team is uniquely positioned with longstanding industry relationships and field expertise in constructing, upgrading, and maintaining substation systems that power communities and critical networks.

We handle everything from site development, foundations, steel and equipment installation, grounding, and bus work, to wiring, testing, commissioning support, and ongoing maintenance. Whether it’s a targeted upgrade or a full greenfield build, our approach remains the same—safety first, exceptional quality work built for longevity, executed with accountability.