What we do
Transmission & Substations.
Louth Callan designs and constructs high-voltage transmission lines and substations with the precision, scalability, and resilience that secure long-term asset value.
Nationwide, 115kV to 500kV.
Louth Callan operates as a leading transmission and substation construction contractor, delivering turnkey high-voltage infrastructure for utilities, independent power producers, developers, and municipalities across the United States.
We specialize in full EPC scope—design, procurement, construction, commissioning, and maintenance—of greenfield substations, transmission line installations, interconnection facilities, and grid upgrades. Our team has successfully executed projects supporting renewable energy integration, grid modernization, load growth, and resiliency initiatives.
Capabilities
Comprehensive High Voltage EPC.
Scope
- Greenfield substation construction — collector, switching, interconnect, transmission and distribution
- Transmission line construction, overhead and underground, 69kV–500kV
- System upgrades, expansions and rebuilds
- Relay and protection systems, SCADA integration, and control house construction
- Civil and structural foundations, bus work, equipment erection and commissioning
Built to Power the Grid — Today and Tomorrow.
With a commitment to safety, schedule certainty, and technical excellence, Louth Callan is your trusted partner for high-voltage construction projects.