CenterPoint Energy Houston Electric’s (CNP’s) service territory consists of coastal areas, highly industrial areas (such as the Houston Ship Channel), rural areas and the congested Houston, Texas, U.S., business and residential districts. Obtaining rights-of-way for serving new loads is a challenge worldwide, but CNP faces particularly acute challenges.
Part of the utility’s strategy for meeting load growth is to rely on high-temperature low-sag (HTLS) conductors to increase ratings. CNP tested and approved the use of aluminum conductor, steel supported (ACSS) at 345 kV in 2000 and pioneered the installation of Southwire’s ACSS/HS285 in 2007 (“First U.S. Installation of New ACSS Conductor,” Transmission & Distribution World, December 2007). CNP quickly accepted the challenge to become the first commercial installer of Southwire’s new stranded carbon-fiber-core C7 overhead conductor with Celstran CFR-TPR.
This gallery includes images from the June 2014 article in T&D World, "High Capacity Meets Low Sag."