HVAC Upgrades at Dulles International Terminal C / D
According to our baseline data , Terminal C / D consumes 48 kWh / square foot of electricity per year compared to 23 kWh / square foot per year for Terminal A / B . In absolute terms , Terminal C / D consumes approximately 9 % more electricity per year than Terminal A / B despite being less than half the size . Initially built as a temporary structure , Terminal C / D was never interconnected to the Dulles International CUP but instead has been serviced by more than 140 rooftop HVAC units which is why it is materially less energy efficient than Terminal A / B . We are currently in the process of replacing most of these existing rooftop units with more efficient ones . Hypothetically , if Terminal C / D ’ s electricity consumption per square foot were to be reduced to the level of Terminal A / B , the annual savings would amount to 17 million kWh , or approximately 8 % of the total amount of electricity consumed at the entire airport based on 2019 data . Given that we spent more than $ 13 million on electricity for Dulles International in 2019 , an 8 % reduction would equate to annual savings of roughly $ 1 million . However , while it does put the electricity consumption of Terminal C / D into perspective , reductions of this magnitude are unlikely even with the HVAC upgrades . Regardless , upon completing the HVAC overhaul , we will recalculate energy consumption per square foot in Terminal C / D to see both how it compares to Terminal A / B and to determine what more we can do to further lower electricity consumption .
LED Lighting Upgrade Programs
Both Dulles International and Reagan National have established LED lighting upgrade programs where traditional light fixtures are swapped out for LEDs on a systematic basis . These initiatives are saving us on average $ 440,000 and $ 240,000 per year at Dulles International and Reagan National , respectively .
Building Green and Sustainable by Updating our Design Manual
When we build new facilities or materially renovate existing facilities at our airports , we are committing to a level of energy consumption that can last for decades . Our Design Manual and our Procurement Manual are what guide how we and our tenants , both build and operate our facilities and to what degree we are building with sustainability in mind . The most recent updates to our Design Manual are being done with an emphasis on sustainability . In addition , we are evaluating the incorporation of LEED principles and advanced ASHRAE standards into the updates as well . One area of focus will be a greater emphasis on lifecycle costing to compliment more traditional first cost-based decision making . We acknowledge that investments in more efficient equipment and more sustainably produced building materials may cost more than similar , less efficient , and less sustainable options . However , the cost savings and other benefits associated with these more efficient and sustainable investments can often result in net overall savings .
We also want to ensure that the minimum standards for construction in the Design Manual are as sustainable as possible with regards to lighting , high-efficiency HVAC equipment , variable speed controls and devices , the use of daylighting , and much more . For example , in the current Design Manual , our tenant guidelines reference a lighting power density of 3.0 watts per square foot . Since the 2014 updates , industry has advanced significantly with more current recommendations across the country ( i . e ., International Energy Conservation Code 2015 and 2018 , California Building Codes , etc .) of 1.0 to 1.5 watts or less per square foot . By requiring more efficient lighting practices , over time , we can reduce our overall electricity consumption . Emphasizing lifecycle costing and lighting power density adjustments are representative examples of the changes that we will be making in the Design Manual so that we build and guide others to build much more sustainably throughout our airport facilities .
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