T-Mobile Park Exterior Lighting Project

Valley completed the complex, innovative, connected a LED lighting system at T-Mobile Park. Valley added lighting to the Rotunda, Upper Bowl & Rooftop Trusses. 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. The system 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 trusses of the stadium’s movable roof and roof deck. In addition, we installed (4) 15kVa transformers/panels for power to 4 rooftop locations, installed new feeders from the panel to the 15kVA transformers and powered 4 slip rings to the roof.

Project Info

Project Name

T-Mobile Park Exterior Lighting Project







The Seattle Mariners

General Contractor

Gravitec Systems

Delivery Method




2020 Illuminating Engineering Society Illumination Award of Merit

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Everett, WA 98203

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