One Nevada Transmission Line

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One Nevada (ON Line) is a 235-mile (378 km), 500-kilovolt, 600-megawatt (800,000 hp) power line that runs from Southern to Northern Nevada. 25% of the transmission line is owned by NV Energy which operates and offers the line's capacity under the terms of NV Energy's Open Access Transmission Tariff. Great Basin Transmission South owns 75% of the line.[1][2] The line runs from the new Robinson Summit Substation in Ely, Nevada to Apex, Nevada connecting with the existing NV Energy Harry Allen Substation.[2][3]


Construction on the $510 million line began in 2010. The line provides a way to connect renewable energy projects along the eastern edge of Nevada with the existing electrical grid.[4] The line was expected to be energized in 2013.[5] The line was energized in January 2014.[3]

The line may be part of the larger Southwest Intertie Project Transmission Line (SWIP) project which would extend the line north to Jerome County, Idaho. The extension would create a 501-mile (806 km) long line.[6]


  1. ^ Jennifer Robison (October 19, 2010). "Groundbreaking celebrates One Nevada transmission line". Las Vegas Review-Journal. Retrieved November 17, 2012. 
  2. ^ a b Jennifer Robison (May 12, 2011). "NV Energy seeks permit to build more transmission lines". Las Vegas Review-Journal. Retrieved November 17, 2012. 
  3. ^ a b "One Nevada Transmission Line Begins Serving". NV Energy. January 2014. Retrieved January 23, 2014. 
  4. ^ Jennifer Robison (2010-06-09). "Consumer advocates seek to downsize NV Energy ONline". The Ely Times. 
  5. ^ Thomas Mitchell (April 13, 2012). "Transmission line twisting in the wind". The Ely Times. Retrieved November 17, 2012. 
  6. ^ "Southwest Intertie Project (SWIP) Transmission Line". Retrieved November 17, 2012.