Sea-Tac targets becoming the US first 100% renewable natural gas heated airport

January 16, 2019. The Port of Seattle’s latest environmental innovation is pushing to make Seattle-Tacoma International Airport the US's first airport heated entirely by renewable natural gas (RNG).

   The Port announced a Request for Proposals last week, calling for renewable natural gas service to supply Sea-Tac Airport’s boilers and bus fueling system, which is responsible for more than 80% of the Port-owned emissions, replacing all of the current fossil natural gas.

   “The Port can play a major role in creating a renewable natural gas market because we offer a stable, long-term use of gas," says its director of aviation environment and sustainability, Arlyn Purcell. “If we can attract a project developer to supply the airport, this will spur more opportunities to feed the current gas pipeline with RNG rather than have landfills or digesters flare the gas on-site or allowing their methane emissions to escape into the air.”

   The Port of Seattle has adopted aggressive greenhouse gas reduction goals under its Century Agenda, with the aim to reduce greenhouse gas emissions from its own operations by 50% from 2005 levels by 2030, and to be carbon neutral or carbon negative by 2050.

   Replacing fossil natural gas with RNG would put the Port ahead of its 2030 goal, and well on the way to achieving the 2050 goal.