Valley Electric Lights Up T-Mobile Park

This dynamic, colorful architectural LED lighting highlights the ballpark and the Pioneer Square district as a beacon in the skyline, while enhancing the experience of every fan and visitor to the home of the Seattle Mariners. Installed accent lighting of six exterior LED up-lights at the Home Base Rotunda Entry in addition to a continuous band of LED spotlights, highlighting the exposed structural steel members of the 3rd deck seating. The coordinated lighting system also includes more than one mile of high-quality and energy efficient Color Kinetics iColor Accent Compact fixtures. These exterior, linear LED luminaires shine long ribbons of white or colored light, and support intricate, color-changing effects on T-Mobile Park’s retractable rooftop and steel trusses, as well as, the architectural features on its eastern and western facades of the roof.

Behind the Scenes

With work being done on the stadium roof there were unique safety factors to be considered. Prior to any work commencement Valley employees completed Gravitec Competent Person Training. During this training workers received hands-on-training with the work activities they would be encountering on the roof.

Once on the job-site a magnetic board displayed labels of authorized workers who had access to the roof. Getting up to the roof took about 10-15 minutes and consisted of climbing multiple ladders with self-retracting lifelines to get above the field. On the roof, most work was at foot level, but traveling further down the slope of the roof declined quickly. About 30% of the roof contained a slope that required fall restraints to protect workers and tools from falling off the roof.

Fall Protection included:

  • Self-Retracting Lifelines – for access up and down fixed ladders
  • Full Body Harnesses with Y-Lanyards – ensuring employees were tied off 100% of the time on the roof
  • Full length horizontal lifeline installed by Gravitec – allowed travel along the roof while being tied off
  • Tools and Material – tied off to prevent fall hazards from the roof
  • Climbing Helmets – fully secured to the head rather than hardhats
Workers on T-Mobile Park and Electrical Box


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