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Design & engineering
To maintain a reliable supply of electricity, SRP relies on a vast network of critical components like generating stations, transformers, transmission lines, substations and more, all working together to deliver power from the power plant to homes and businesses. The diagram below illustrates this process:
Route details
The Price Road Corridor 230 kV project consists of a new double circuit 230 kV power line from the Knox substation in Chandler to a 230 kV substation site, identified as RS-27, located in the northern section of the Price Road Corridor. Visit our maps page to see photos of the route details.
Line profiles
The 230 kV poles used for the overhead portion of the PRC project will be approximately 120–150 feet tall with a diameter of 4–5 feet. The chart below helps put this size in perspective compared to other types of transmission poles:

Slideshow
See examples of lines and substations below.

230 kV line
This is a photo of a typical 230 kV line. It also has a single circuit of 69 kV underbuilt on the poles. The poles in this photo are approximately 130 feet tall.

230 kV substation
This is an aerial view of the Knox substation, located in an industrial corridor. SRP has dozens of 230 kV substations in Valley commercial areas (similar to pictured example) that are enclosed with chain
link fences. This is the type of facility planned on SRP property at the intersection of Price and Germann Roads.