Metro's CO2 Emissions
Every trip taken with Metro and not a car reduces the region's carbon footprint. Metro's regional CO2 emissions displacement is highly dependent on ridership and regional transportation trends; in FY 2018, Metro displaced 12% fewer CO2 emissions than in FY 2017 - primarily due to decreased public transit ridership throughout the region.
Riders choosing Metro over a single-passenger car significantly reduce the CO2 emissions for the region. The "emissions displacement" represents the net savings after subtracting out the CO2 emissions of Metro's operations (367,000 MT CO2e) from the estimated CO2 emissions if all Metro trips were replaced by single-occupancy vehicles trips (737,000 MT CO2e). The emissions displacement is approximately 370,000 MT CO2e in FY 2018, as shown in the graph above, which is the equivalent to emissions from 41.6 million gallons of gasoline or the electricity from over 55,000 homes.
Reducing CO2 emissions requires two elements: one, reducing overall energy use; and two, reducing the amount of carbon emitted by the energy source. While Metro has effectively reduced energy use, the carbon intensity of the regional power in DC and Maryland increased. This led to CO2 emissions per vehicle mile being only slightly lower in FY 2018 compared to FY 2017.
To reduce CO2 emissions while lowering costs, Metro is pursuing both partnerships for community solar projects and renewable electricity supply options.
Read more about how Metro is achieving its Sustainability targets in our
2018 Annual Sustainability Report