Guam Power Authority’s Substation Project Hits Halfway Point

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Guam Power Authority’s Substation Project Hits Halfway Point New transformer with greater capacity to help improve reliability

By Louella Losinio

HAGÅTÑA, Guam (Marianas Variety Guam, Dec. 27, 2013) – A major capital improvement project to upgrade the Guam Power Authority’s (GPA) Tumon substation has reached its halfway mark, GPA reported yesterday.

Motorists northbound along Route 1 in Upper Tumon can view the project across from John F. Kennedy High School next to Kmart.

According to GPA, a new transformer with more capacity is being installed. Other improvements include a greater ability to back-feed and re-route power as well as greater ability to support other distribution lines to improve system reliability and redundancy.

GPA is also installing a new transformer containment pad to comply with environmental protection regulations.

Irwin Loyola, GPA engineering supervisor, said the project is part of a $43 million upgrade for the islandwide power system to improve power quality and reliability.

"The funds are part of GPA revenue bonds issued in 2010 for major capital improvement projects to upgrade aging equipment," Loyola said.

The Tumon substation transformer, according to GPA, has already exceeded its recommended life span of 25 years.

GPA customers served by the Tumon substation include the Tumon Sands Plaza, the DFS Galleria, Guam Marriott Resort & Spa, Pacific Islands Club, Fiesta Resort Guam and Holiday Resort Guam. These establishments had been vulnerable to power outages due to the aging T-60 transformer.

The replacement cost the power utility about $500,000.

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