One Nevada (ON Line) is a 235-mile (378 km), 500-kilovolt, 600-megawatt power line that runs from Southern to Northern Nevada. NV Energy owns 25% of the transmission line and operates and offers the line's capacity under the terms of NV Energy's Open Access Transmission Tariff. Great Basin Transmission South (a subsidiary of LS Power) owns 75% of the line.[1][2][3] The line runs from the new Robinson Summit Substation in Ely to Apex, connecting with the existing NV Energy Harry Allen Generating Station,[2][4][5] and uses tubular guyed-V towers on a single point foundation.[6]