Path 27

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rdf:langString Path 27 HVDC power lines with some of the Path 46 lines visible, along Interstate 15 in California

rdf:langString DC powerline as it crosses over route 247, south of Barstow, California Two conductors are suspended by insulators. Each conductor is a bundle of three to reduce radiation losses. In the background is a conventional three phase powerline running in the same right-of-way.

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rdf:langString Path 27, or the Intermountain Power Project DC Line (IPP DC Line), or the Southern Transmission System is a HVDC transmission line that carries electricity from the Intermountain Power Plant near Delta, Utah to the city of Los Angeles via the Adelanto Converter Station in Adelanto, California. It is owned and operated by the Intermountain Power Agency, a large cooperative primarily owned by the Los Angeles Department of Water and Power (LADWP) (50%) along with five other Los Angeles area cities (25%) and 30 small Utah municipalities (remaining 25%). It is a bipolar overhead power line 488 miles (785 km) long, and can transfer a maximum power of 2,400 megawatts at ±500 kV. The part of the line that travels through the Mojave Desert is followed by many other AC 500 kV lines and Interstate 15. The Pacific DC Intertie is the other HVDC line serving Los Angeles. HVDC lines such as the Intermountain line and the Pacific DC Intertie can be distinguished by having two transmission wires, rather than the three necessary for transmission of three phase AC power.