Powering Illinois: Ruiz Construction Supports Completion of Major ComEd Substation At Ruiz Construction Services, we’re honored to contribute to the advancement of Illinois’ energy infrastructure. On July 15, 2025, we joined ComEd, Ringland-Johnson Construction (RJC), and local leaders to celebrate the ribbon cutting of the Itasca TSS101 345kV GIS Substation—a transformative project for the region....