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Climate and Air Quality

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How we reduce emissions

SEA Airport collaborates with our tenant airlines, service providers, and our community to reduce emissions. While a majority of pollution-causing emissions occur from sources not under our control, through these partnerships and the environmental goals of our organization, we can move people and goods more efficiently while improving our region's air quality and strengthening the businesses that operate at SEA Airport.

Electric ground support equipment Electric Ground Support Equipment

SEA Airport has installed nearly 300 electric ground support equipment charging locations throughout the passenger terminal ramps, to have them available at every gate by 2021 (561 in total). Each site provides charging access for one piece of eGSE.

Benefits of eGSE: SEA's eGSE charging stations allow airlines to use electrically-powered GSE rather than petroleum-fueled GSE. By using these types of electric vehicles, this project (when complete) will reduce:

  • Nearly 1 million gallons of petroleum per year
  • Approximately $2.8M in fuel expenditures per year
  • 10,000 metric tons of GHGs per year, the pollution that causes global warming

Greener transportation options   Greener Transportation

SEA Airport has partnered with many of our ground transportation providers to offer greener choices such as high MPG taxis and rideshare options, or alternative fuel shuttles and door-to-door vans.  These include initiatives such as: 

  • Partnered with Clean Energy to build the state's first large compressed natural gas (CNG) fueling station open to the public
  • In response to airport contracts, taxis picking up at SEA must be high MPG or alternative fueled
  • In response to airport contracts, rideshare services such as Uber and Lyft must meet the same environmental performance standards of the taxi fleet but may do so through several options including ride pooling and deadhead reduction.
  • Many of our shuttle and door-to-door van services use alternative fuels like propane and natural gas and use high mileage vans in their fleets

Pre-Conditioned air and ground power for aircraft   Pre-Conditioned Air and Ground Power for Aircraft

Seattle-Tacoma International Airport has installed Pre-Conditioned Air or "PC Air" and ground power at each of our gates to reduce energy costs for airlines, improve air quality, and increase energy efficiency throughout the airport. PC Air provides cooled and heated air to an airplane cabin while parked at SEA gates, while ground power supplies other electrical needs in the cabin. Pre-conditioned air allows the pilot to turn off the airplane's auxiliary engines that would typically provide air and electricity to the cabin, thereby reducing fuel and air emissions.

Benefits of PC Air: PC Air provides both environmental and financial benefits to our airline's partners, our passengers, and our surrounding communities. Each year, PC Air reduces:

  • 5 million gallons of fossil fuel use
  • $15 M in fuel expenditures by the airlines
  • 73 tons of nitrogen oxides (NOx), a nationally regulated air pollutant
  • 40,000 metric tons of greenhouse gases 
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