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Encyclopedia > Path 66

Path 66 is the name of a 500 kV power line that was built by Western Area Power Administration (WAPA) in the early 1990s and completed (energized) in 1993. It is the northern half of one of the three 500 kV lines that makes up the Pacific AC Intertie which is the AC portion of a greater project linking power grids in the Southwest with the grids in the Pacific Northwest (for more info see Path 15 and for the DC portion of the project, see Pacific Intertie). Also, this is the larger and older of the two segments of the Pacific AC Intertie that WAPA worked on, the other is this. The 350-mile (567 km) power line is in the California Central Valley, moreover the Sacramento Valley, for most of the time. Josephson junction array chip developed by NIST as a standard volt. ... Power Line is a neoconservative blog run by three lawyers: John H. Hinderaker (Hindrocket), Scott W. Johnson (The Big Trunk) and Paul Mirengoff (Deacon). Power Line covers political and social issues from a conservative viewpoint. ... The Western Area Power Administration (Western) markets and delivers cost-based hydroelectric power and related services within a 15-state region of the central and western U.S. It is one of four power marketing administrations within the U.S. Department of Energy whose role is to market and transmit... See also 1990s, the band The 1990s decade refers to the years from 1990 to 1999, inclusive, sometimes informally including popular culture from the very late 1980s and from 2000 and beyond. ... 1993 (MCMXCIII) was a common year starting on Friday of the Gregorian calendar and marked the Beginning of the International Decade to Combat Racism and Racial Discrimination (1993-2003). ... City lights viewed in a motion blurred exposure. ... It has been suggested that Electrical power grid be merged into this article or section. ... The Southwest region of the United States is drier than the adjoining Midwest in weather; the population is less dense and, with strong Spanish-American and Native American components, more ethnically varied than neighboring areas. ... Darker red states are always considered part of the Pacific Northwest. ... Path 15 is the name of a major north-south power transmission corridor in California. ... Direct current (DC or continuous current) is the continuous flow of electricity through a conductor such as a wire from high to low potential. ... The Pacific Intertie is a high voltage direct current transmission line between Celilo, Oregon and Sylmar, California. ... A mile is the name of a unit of length, usually used to measure distance, in a number of different systems, including English units, Imperial units, and United States customary units. ... A kilometer (Commonwealth spelling: kilometre), symbol: km is a unit of length in the metric system equal to 1,000 metres (from the Greek words χίλια (khilia) = thousand and μέτρο (metro) = count/measure). ... Official language(s) English Capital Sacramento Largest city Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... The California Central Valley The California Central Valley dominates the central portion of the state of California. ... The Sacramento Valley is the portion of the California Central Valley that lies to the north of the San Joaquin-Sacramento Delta. ...


Path 66 is composed of three segments. The route technically starts at where a rare, tall, dual-circuit 500 kV line 'picks up' a PG&E 500 kV line heading south from the Tesla substation and one heading north from the Los Banos substation in the San Joaquin Valley. Pacific Gas and Electric Company (PG&E) is the utility that provides power to most of Northern California. ... A compass rose with South highlighted South is most commonly a noun, adjective, or adverb indicating direction or geography. ... A 115 kV to 41. ... Compass rose with north highlighted and at top North is one of the four cardinal directions, specifically the direction that, in Western culture, is treated as the primary direction: north is used (explicitly or implicitly) to define all other directions; the (visual) top edges of maps usually correspond to the... Los Banos is a city located in Merced County, California. ... The eight-county San Joaquin Valley is the part of the Central Valley of California that lies south of the Sacramento-San Joaquin River Delta in Stockton. ...

Map of Path 66 (upper section, left of the other two 500 kV lines).
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Map of Path 66 (upper section, left of the other two 500 kV lines).
Dual-circuit 500 kV line. This type of line is rare in the United States, but common in places like Hong Kong and China. Many 500 kV lines in the United States are single-circuit.
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Dual-circuit 500 kV line. This type of line is rare in the United States, but common in places like Hong Kong and China. Many 500 kV lines in the United States are single-circuit.

The dual-circuit 500 kV wire heads north and ends at the Tracy Substation west of Tracy and close to the Clifton Court Forebay. This second segment, the Tracy-Olinda line, is a single-circuit 500 kV wire that heads to the northwest, closely paralleling the two PG&E lines that make up the rest of the electron highway. The three lines cross together over the San Joaquin River and the Sacramento River in the Sacramento-San Joaquin River Delta. The two spans of three power lines each, just to the east of the confluence of the Sacramento and San Joaquin Rivers, utilize massive pylons in order to raise the wires high enough to safely cross both rivers. After the crossing, the PG&E power lines split, with one heading northwest and the other to the northeast. The line parallels the one that heads northwest and Interstate 505 for a while. After the PG&E line heads northeast, this power line stays in the western part of the Sacramento Valley. It parallels Interstate 5 (about four miles (6.5 km) to the west) on its way north, although it's barely visible. This second segment terminates at Olinda Substation, northwest of Red Bluff. Here the line interconnects with transmission lines carrying power from Shasta Dam and Keswick Dam. The third portion, the Olinda-Captain Jack line, heads north as a single-circuit line, using a slightly different tower structure and then near Cottonwood it turns to the northeast and crosses Interstate 5. The power line begins its ascent on its way to the Modoc Plateau, following two sets of 230 kV lines up until near Round Mountain. From there, it heads north, spanning over the Pit River and the Stonecoal Valley. The line climbs in elevation and reaches its highest point near Grizzly Peak at about 5,500 ft. (1,676 m). The line then descends and turns east and then northeast to meet up with the other two 500 kV lines running across the Modoc Plateau. The path ends in the Captain Jack Substation close to Malin, the California-Oregon border, and the Malin Substation, where the other 500 kV lines terminate. These substations link to both the Pacificorp and Bonneville Power Administration (BPA) grid in the Pacific Northwest. Tracy is a city located in San Joaquin County, California. ... A compass rose with Northwest highlighted Northwest is the ordinal direction halfway between West and North on a compass. ... The San Joaquin River, 330 miles (530 km) long, is the second-longest river in California, United States. ... A spring at the Sacramento River headwater The Sacramento River is the longest river in the state of California. ... The Sacramento Delta. ... This article is in need of attention. ... Northeast is the ordinal direction halfway between north and east. ... JUNCTION POSTMILE I-80 SOL 0. ... Interstate 5 (abbreviated I-5) is the westernmost interstate highway in the continental United States. ... Red Bluff is the county seat of Tehama County, California. ... Shasta dam with Shasta Lake behind it and Mt. ... Cottonwood is a census-designated place located in Shasta County, California. ... The Modoc Plateau lies in the northeast corner of California as well as parts of Oregon and Nevada. ... Round Mountain is a census-designated place located in Shasta County, California. ... The Pit River is a tributary of the Sacramento River, approximately 110 mi (176 km) long, in northeastern California in the United States. ... Malin is a city located in Klamath County, Oregon. ... Official language(s) English Capital Sacramento Largest city Los Angeles Area  Ranked 3rd  - Total 158,302 sq mi (410,000 km²)  - Width 250 miles (400 km)  - Length 770 miles (1,240 km)  - % water 4. ... Official language(s) None Capital Salem Largest city Portland Area  Ranked 9th  - Total 98,466 sq mi (255,026 km²)  - Width 260 miles (420 km)  - Length 360 miles (580 km)  - % water 2. ... ScottishPower Plc is an energy company headquartered in Glasgow, Scotland. ... The Bonneville Power Administration (BPA) is a US self-financed federal agency headquartered in Portland, Oregon which transmits and sells wholesale electricity to Washington, Oregon, Idaho and western Montana. ... Transmission towers Transmission lines in Lund, Sweden Electric power transmission, or more accurately Electrical energy transmission, is the second process in the delivery of electricity to consumers. ... Darker red states are always considered part of the Pacific Northwest. ...


This power line including the other two 500 kV wires can be easily seen from the air or Google Earth, especially north of Red Bluff. The power line's cleared right-of-way through the Modoc and foothill forests can be easily seen despite low-resolution images over several portions of the Olinda-Captain Jack line. However, in the Central Valley, where the Tracy-Olinda line does not run through a dense forest, the line is totally invisible on Google Earth's low-resolution portions due to the lack of darker trees on either side of the power line. Google Earth is a free-of-charge, downloadable virtual globe program. ...


Tower design and differences

This 500 kV power line, unlike its PG&E counterparts, is triple-bundled, mean that it has three-wires per phase, whereas the PG&E lines is only double-bundled, or two wires per phase. In addition, the tower's design is strikingly different from the lighter, wider, but structurally thinner PG&E wires and the design also changes significantly as one goes from south to north on Path 66. For a comparison, see below: Look up Phase in Wiktionary, the free dictionary Phase may refer to: Phase (matter), a physically distinctive form of a substance, such as the solid, liquid, and gaseous states of ordinary matter Phase (waves), the time position (or angle in the complex plane) within a cycle of a periodic waveform...

Path 66 WAPA Tracy-Olinda 500 kV transmission line outside of Vacaville It's about to cross Interstate 80, see this.
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Path 66 WAPA Tracy-Olinda 500 kV transmission line outside of Vacaville It's about to cross Interstate 80, see this.
Path 15 PG&E wires near Tracy.
Path 15 PG&E wires near Tracy.


Also, compare the above WAPA 500 kV wire picture with this photo of the Olinda-Captain Jack segment where it crosses Interstate 5 (located visually in between the two 230 kV tower in the foreground) and from a different angle (large, steel lattice tower in the background). The WAPA line changes design at the Olinda substation from the WAPA tower pictured above to the one pictured at the Interstate 5 crossing. In addition, the segment of Path 66 from the Tracy Substation to the San Joaquin River crossing has towers resembling the tower pictured in the Interstate 5 crossing, but the tower is structurally different. It can be seen from Highway 4 and the western part of the San Joaquin River portion of the Delta. Vacaville, California is a city located in Solano County, California, between Sacramento and San Francisco. ... Route across the United States Interstate 80 (abbreviated I-80) is the second-longest Interstate Highway in the United States. ... Image File history File linksMetadata Download high resolution version (2048x1536, 688 KB) Summary This picture was taken by me on 9/17/2005. ... Image File history File linksMetadata Download high resolution version (2048x1536, 688 KB) Summary This picture was taken by me on 9/17/2005. ... Path 15 is the name of a major north-south power transmission corridor in California. ... JUNCTION POSTMILE I-80 CC 0. ...

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PG&E 500 kV wire spanning over the Path 66 WAPA line (Tracy-Olinda segment).

 
 

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