Case Study

Climate Pledge Arena

To help Climate Pledge Arena become the world’s most sustainable arena, Belden provided fiber and copper solutions backed by environmental product declarations.


This is an excerpt of a case study. Read the full case study here.




Built nearly six decades ago on a 74-acre entertainment complex as part of the World’s Fair, the Seattle Center Coliseum—reborn in 1995 as Key Arena—has now been transformed once again. After working with global sports and entertainment company Oak View Group and the Seattle Kraken to strike a naming rights deal, Amazon announced that it wouldn’t name the arena after a corporation. Instead, the name would recognize the e-commerce enterprise’s commitment to The Climate Pledge: a call to organizations to achieve net zero carbon by 2040.


Climate Pledge Arena—home to the NHL’s newest franchise, the Seattle Kraken, and the WNBA’s Seattle Storm—is a unique mix of the past and the future. While Seattle Center Coliseum’s landmark façade and roof were preserved, everything underneath and inside the iconic structure is new. It’s also the first arena in the world powered solely by renewable energy. To create room for 18,000+ seats, contractors dug 15 feet deeper into the ground while also going wider to double the existing square footage. In and around the arena, fans will enjoy ultra-fast wireless speeds supported by 5G as they download and stream content, video chat, collaborate and take advantage of immersive experiences.


The arena’s sustainability goals include net-Zero Carbon Certification from the International Living Future Institute, elimination of single-use plastic, water conservation and 97% waste diversion. To track progress, it plans to share data about energy and water use on a quarterly basis, as well as how much waste is diverted from landfills.


Racks and Cabinets Belden Climate Pledge Arena



Climate Pledge Arena wanted to work with partners that were committed to change, including manufacturers that could provide accurate data about the environmental impact of their products. In addition, the location of the project—in the heart of Seattle’s Uptown neighborhood at Seattle Center—would make it difficult to receive deliveries, so manufacturers needed to be creative in terms of getting products to integrators to complete the work.


But the biggest challenge of all involved maintaining a completion date of October 2021—despite the onset of a global pandemic. During groundbreaking in December 2018, no one knew that COVID-19 would strike during the second half of the project. Because Seattle was one of the first U.S. cities to roll out restrictions, plans for jobsite access, shifts and crew size were reexamined to comply with guidelines.


To reach the target completion date, it was important to maintain a safe, healthy jobsite while also sticking to the original timeline—even though it was created without social distancing and jobsite
limitations in mind. 




In 2016, Belden began conducting product lifecycle analyses as part of its commitment to measuring and reducing the environmental impact of its products. This data could be used not only to measure performance and track progress, but also to provide Climate Pledge Arena with the information it needed to make informed decisions about products. Over time, Belden had also established a trusted relationship with Oak View Group, which led arena redevelopment and operations. Belden’s end-to-end cabling and connectivity solutions are used in many of the company’s projects across the country.