Transmission, Distribution & Substations

Donco Electrical Construction LLC specializes in high voltage electrical construction:

• Construction and maintenance of urban and rural transmission and distribution power lines;
• Construction, installation and maintenance of substation facilities through 345 kV;
• Maintenance and testing of substation transformers;
• Installation of underground lines through 69 kV;
• Installation of power cables in manufacturing, mining and refining facilities;
• Maintenance and testing of gas and oil circuit breakers in substations;
• Installation, maintenance and repair of group-operated switches through 345 kV; and
• Installation of site lighting.

• Eldorado Headquarters
• US Highway 45
• P. O. Box 120
• Eldorado, IL 62930

• 618.273.7717
• 618.273.9936 (Fax)

• Centralia Facility
• 609 Airport Road
• P. O. Box 1205
• Centralia, IL 62801

• 618.533.1680
• 618.533.5846 (Fax)