Airport Greenhouse Gas Reduction Efforts (2019) / Chapter Skim
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15 Because many airports have implemented GHG projects since the publication of ACRP Report 56 in 2011, it was necessary to collect information to capture lessons learned from these initiatives. Quantitative and qualitative methods were used to collect information.
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16 Airport Greenhouse Gas Reduction Efforts was mapped for relevance so that respondents answering "no" or "not applicable" to a specific question did not receive follow-up questions on that specific topic. Even with these measures in place, a limited bias is likely because survey respondents may be more invested in environmental concerns or GHG reduction work than those who chose not to participate.
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Findings 17 Large Commercial service airports with 1% or more of annual passenger enplanements 30 17 (plus 1 from Canada) Medium Commercial service airports with between 0.25% and 1% of annual passenger enplanements 31 16 Small Commercial service airports with between 0.05% and 0.25% of annual passenger enplanements 70 15 Nonhub Commercial service airports with less than 0.05% of annual passenger enplanements 255 29 General Aviation Noncommercial service airports including reliever airports 974 19 Hub Types Examples Total Airports (2017)
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18 Airport Greenhouse Gas Reduction Efforts Airport Directors or Assistant Directors, while larger airports were represented by a variety of related disciplines (see Figure 2-3.) Of the 97 survey respondents: • 19 (19%)
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Findings 19 Table 2-2 presents the GHG planning initiatives by airport type, as reported by survey respondents. For those airports that have not yet implemented GHG reduction initiatives, the primary reasons given were limitations in human resources (16 responses)
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20 Airport Greenhouse Gas Reduction Efforts The top drivers for implementing GHG reduction efforts are detailed in Figure 2-5. Cost reduction was listed by 30 airports as the single top driver followed by sustainability (13 airports)
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Findings 21 Energy Efficiency 23 36% L = 7 M = 4 S = 3 N = 7 GA = 5 More efficient heating and cooling equipment; LED lighting; LEED buildings; converting from diesel heating to electric Renewable Energy 14 22% L = 2 M = 5 S = 1 N = 4 GA = 2 Purchasing wind power; installing solar PV, solar hot water, geothermal, and biomass systems Alternative Transportation 12 19% L = 5 M = 4 S = 2 N = 1 GA = 0 Conversion of diesel buses to CNG, RNG, and electric vehicles; charging stations Airside Electrification 10 16% L = 3 M = 2 S = 2 N = 2 GA = 1 Charging stations for GSE; gate electrification equipment Other 4 6% L = 0 M = 0 Green roof; reuse of construction material reducing S = 3 N = 0 GA = 1 vehicle trips; cropland for biofuel feedstock Note: L = large; M = medium; S = small; N = nonhub; GA = general aviation; LEED = leadership in energy and environmental design; CNG= compressed natural gas; RNG = renewable natural gas. Project Type No of Responses Percentage By Airport Type Examples Table 2-3.
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22 Airport Greenhouse Gas Reduction Efforts Airports were also asked to select from a list of conclusions to indicate which ones were applicable to the specific GHG reduction initiative implemented. As shown in Figure 2-8, the most selected conclusion was that the GHG reduction effort provided measurable results (47)
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Findings 23 2.2.2 Respondents' Comments The respondents were also asked to include additional comments. The following comments provide valuable lessons learned.
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24 Airport Greenhouse Gas Reduction Efforts • "It has to have the full support of the director/president. The leader has to fully embrace the initiative." • "Emission reduction projects need to have a strong business case.
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