Increase Efficiency of Our Built Environment
Sustainable energy use is the practice of conserving and optimizing energy consumption , managing demand , and using power from renewable resources . Such practices lead to higher levels of building efficiency across the Authority ’ s physical assets . With a renewed focus on energy use , over time we will strive to maintain a stable level of purchased energy consumption ( i . e . on a per-passenger basis ) despite increases in both expected electricity use for transportation systems and passengers ( i . e ., increased plug loads ) through dynamic responses to loads rather than maintaining energy systems in a constant state . In addition , we intend to increase the use of renewable energy resources to power our facilities as the continued decline in the costs of such resources makes them increasingly more attractive to us moving forward .
Baseline
“ Sustainable energy use ” refers both to the amount of energy that is used across Authority facilities as well as the source of this energy . Baseline 2019 total electricity usage ( including tenants ) at the two airports is summarized in Table 4 . Dulles International has nearly three times the internal building square footage as Reagan National and this is reflected in the total electricity consumption . However , on a per-square-foot basis , the figures are comparable . With comparable passenger traffic ( 23.9 million for Reagan National and 24.8 million for Dulles International in 2019 ) 21 , per-passenger electricity consumption at Dulles International is more than twice that of Reagan . However , operations are very different across the two airports and as a result , per passenger metrics are not directly comparable . It is noted that the DTR has not been quantified for baseline tracking due to the relatively low energy consumption of these facilities . Relevant best practices will be reviewed for these facilities as well .
Table 4 : 2019 Electricity Consumption at Authority Airports
|
Current Electricity Consumption
Metrics ( Annual )
|
Dulles International |
Reagan National |
|
Total electricity consumption
( millions of kWh )
|
221 |
88.5 |
Electricity consumption per square foot ( kWh ) |
39 |
43 |
Electricity consumption per passenger ( kWh ) |
9 |
3.7 |
Number of passengers ( millions ) |
24.8 |
23.9 |
Square footage ( millions ) |
5.6 |
2.1 |
As it relates to natural gas consumed directly by the Authority ( not including tenants ), as shown in Table 5 , the situation is similar between the two airports with comparable consumption on a therms-persquare-foot basis , but with a material difference on a per-passenger basis .
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