Ramping up reliability in the Southwest

After the September 2011 large-scale power outage in southwestern Arizona and southern California, evaluations and reports of the incident stated both Western and Arizona Public Service needed to provide additional voltage support to the region in a very short timeframe. To meet the recommendations, Western and APS combined resourCapacitor banks at Kofa Substationces to install three, 15 megavar capacitors banks at the Kofa Substation. This project will provide voltage support to the Parker-Davis 161-kV system, which will support the heavy load growth in the Yuma, Ariz., area, as well as the Southwest Power Link transfers. The kicker of the project was that it had to be accelerated so it was completed before the heavy summer loads.

Through the partnership, Western provided the design and procured equipment to aid in the construction of the project and APS provided the contractor (Wilson Construction Company), procured additional equipment and installed the equipment with Western’s construction oversight.

The project was completed safely and on schedule thanks to the hard work and dedication from Western, APS and Wilson Construction. “Our thanks to all those that participated for their combined efforts and willingness to work together to ensure the reality of this project in such a short timeframe,” said Mike Garcia, a Desert Southwest engineering project manager.

Meeting Western’s commitment to provide additional voltage stability to the region before the heavier summer energy demand in 2013 ensures critical voltage control going forward.

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