Four Corners Materials employees placing concrete on the PNM project.

San Juan Generating Substation

Project Type


Ready Mix Concrete




Ready Mixed Concrete

As PNM transitioned away from coal-powered plants, new substations for renewable energy sources are needed to continue providing power to local communities. This project is one of many to come as PNM continues to change energy sources.

Owner: PNM
General Contractor: Great Southwestern Construction
Start Date: 24 April 2023
Completion Date: Late Fall 2023
Subcontractors or Key Contractors: DynaGrid
Materials Used on Project and Quantities: 4500 PSI concrete (750 yds) 1” Crushed rock (6000 tns)


Four Corners Materials delivering concrete for PNM project.