37 Construction and installation of electrical substation assemblies and structural components, namely, installation of structural systems, apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Construction planning, namely, pre-construction visualization and planning for sequencing of construction; Construction, installation, repair and maintenance of electrical substation assemblies, structural components and skid-mounted electrical substations; construction services, namely, installation services and construction of electrical transmission and electrical generation facilities for conducting, switching, transforming, accumulating, regulating and or controlling electricity; construction planning services, namely, pre-construction visualization in the nature of planning and laying out of electrical transmission facilities, electrical generation facilities, and electrical substations, and planning for sequencing of construction; construction services, namely, construction project management