Quanta Infrastructure Solutions Group, LLC

Quanta Infrastructure Solutions Group, LLC (QISG) delivers turnkey infrastructure solutions for energy and utility projects across the United States. The company provides EPC, design-build and CMAR services covering electrical infrastructure, wastewater and specialty projects, drawing on integrated capabilities in engineering, procurement and construction. Its technical work spans high-voltage transmission, substation design and construction, renewable energy integration, grid resilience and modernisation, as well as wastewater and water treatment infrastructure.

QISG operates a "Construction as a Partner" delivery approach, a project model intended to reduce risk premiums and improve schedule certainty by offering single-point accountability from project inception through completion. Its scope of work includes right-of-way acquisition, environmental planning and permitting, material procurement, project scheduling and construction management, alongside engineering and field execution.

The company serves the energy and utilities, transmission and distribution, renewable energy, wastewater and water treatment, and critical infrastructure sectors, with service coverage nationwide. QISG is part of Quanta Services, described as the largest end-to-end solutions provider in North America. It states commitments to safety, quality, integrity and collaboration among its core values.