The 10 megawatts of Denver International Airport's solar panels generate enough electricity to power 2,500 homes.

Being environmentally friendly is a core value at Denver International Airport (DEN). DEN is a short train ride or drive away from the sustainable Colorado Convention Center and a variety of other conference venues, making Denver a convenient eco-friendly destination for your next event or meeting.

DEN offers environmentally-friendly amenities, sustainable business practices and major conveniences for passengers such as:

  • 52 electric vehicle charging stations
  • 29 water bottle filling stations
  • Second-largest commercial airport solar power farm, with five photovoltaic solar arrays and a combined production capacity of 18.5 million kilowatt hours per year
  • New liquid collection sites where passengers can empty drink bottles and refill them post-security
  • 2,000 lightbulbs upgraded to LEDs
  • Four LEED-certified buildings with the Westin Hotel being designated as LEED Platinum
  • Industry-leading deicing collection and recycling operation where 70 percent of applied deicing fluid is captured and recycled
  • Creative waste diversion tactics beyond traditional recycling and composting. For example, 177,836 pounds of food was collected and donated to nonprofits in 2018.



  • DEN became the first commercial service airport in North America to have an internationally certified Environmental Management System (EMS), which covers all operations and ensures that appropriate safeguards are in place in order to identify and manage environmental impacts and risks.
  • Twice DEN has been recognized as a 24 Karat Gold Winner in the state's Environmental Leadership Program (ELP), and the airport has maintained membership in the ELP since 2004.

Airport Rail Service

It's now easier than ever to get from DEN to downtown Denver, which provides a green way to travel. 

At a cost of $10.50 each way (with discounts available), travelers can use the new rail service, known as the A Line, from the airport to Denver Union Station and vice versa courtesy of the Regional Transportation District (RTD), metro Denver's public transit provider. 

The A Line, accessible on Level 1 of the airport's main terminal, whisks travelers to the heart of downtown, specifically the recently restored Union Station, which is the city's new transportation hub and "living room," thanks to its plush surroundings. From Union Station, travelers can access additional local and regional transportation services, such as light rail, regional and local buses, Amtrak rail service, taxis, and the free 16th Street Mall shuttle (MallRide) and free downtown MetroRide buses that provides access to most downtown hotels. Union Station itself is a beautiful 1914 Beaux-Arts building and the location of hip, locally owned restaurants, bars, shops and a boutique hotel. 

The airport rail has six stops along the way and takes approximately 37 minutes. It opened on April 22, 2016.