Sustainability

The grass isn't the only thing that’s green at T-Mobile Park! Sustainability is important to the Ballpark Public Facilities District and the Mariners, the latter of whom is among the founding members of the Green Sports Alliance, an organization that helps sports teams and venues enhance their environmental performance. The Alliance brings together venue operators, sports team executives, and environmental scientists to exchange information about better practices and develop cost-competitive and innovative solutions to their environmental challenges.

Sustainability

The Mariners and T-Mobile Park are widely-recognized as national leaders in sustainable operations. In 2017, the Mariners received the Green Glove Award for the highest recycling rate in Major League Baseball. The Mariners recycled 96 percent of all waste generated that season. Since 2010, the first year the Mariners were recognized by MLB for sustainability practices, the recycling rate at T-Mobile Park has averaged 85 percent, one of the highest marks in all of professional sports.

With the help of environmental superhero characters, Captain Plastic and Kid Compost, fans are encouraged to do their part to help keep T-Mobile Park and Seattle green. The program diverts more than 1 million pounds of plastic water, soda and beer bottles from the waste stream each season and has become a model for other professional sports teams.

Power Savings

T-Mobile Park was the first ballpark in Major League Baseball to use LED fixtures to illuminate the playing field. The 578 GigaTera fixtures, installed in 2014, use 800 watts of power each. The old technology metal halide lights used 1,000-2,000 watts each. LED lights are 20-30 percent brighter and yet use 60 percent fewer watts. That reduces power usage at T-Mobile Park by 784,000 kilowatt hours each season and saves more than $50,000 in energy costs alone. The LED fixtures are also expected to last 30 years, compared to the two- to three-year life span of the old fixtures.

We’re generating our own electricity, too. An array of Panasonic HIT® Double solar panels on the skybridge connecting T-Mobile Park to its parking garage generates 40,000 kilowatt hours of power annually, which is fed into the T-Mobile Park distribution grid.

Water Conservation

The Mariners have been honored for storm water pollution prevention as well as water conservation for an innovative plan to wash the ballpark's massive retractable roof. All wash water is collected and pumped through a small treatment plant, then stored and recycled for later use. This approach has cut the amount of water used for the roof washing from 225,000 gallons to only 30,000 gallons.

Transportation

The Mariners and Sound Transit collaborate to provide transportation services to the ballpark, including a Sounder Train that serves almost a dozen cities north and south of T-Mobile Park. The trains typically run on Sundays and depart King Street Station 35 minutes after the game's final out.