EPC program management for extra-high-voltage electrical transmission systems
EC Source designs and builds large-scale electric transmission infrastructure—overhead lines, underground systems, substations, and switchyards—across North America. The engineering-heavy hiring mix (16 engineers among 30 active roles, accelerating) combined with active projects in HVDC transmission and substation design signals aggressive capacity scaling. Pain-point data reveals operational friction around drawing control, subcontractor coordination, and safety oversight—typical pain points for capital-intensive, safety-critical field operations managing multiple teams across distributed sites.
EC Source is a full-service EPC (engineering, procurement, construction) entity specializing in Extra High Voltage electrical transmission systems. The company operates across the full project lifecycle: environmental planning, engineering design (using Civil 3D, Revit, ANSYS, ETAP for power-system modeling), procurement, and on-site construction of overhead and underground transmission infrastructure, distribution networks, substations, and switchyards. EC Source is headquartered in Mesa, Arizona, operates across the United States, and employs 201–500 staff. The company is a subsidiary of MasTec, a Fortune 500 contractor.
EC Source uses Autodesk tools (Civil 3D, AutoCAD, Revit) for design, ANSYS and ETAP for electrical analysis, Primavera P6 for project scheduling, Procore for construction management, Power BI for reporting, and ArcGIS for geospatial planning. SCADA and IEC 61850 are used for electrical system protocols.
Current projects include HVDC transmission construction, substation and switchyard design/build, drawing control process improvements, power delivery infrastructure, and environmental compliance work including storm water and spill prevention planning.
EC Source Services, LLC's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →
This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.