Climate and Energy Action Plan (CEAP)

2 In the analysis , we assumed that vehicle miles traveled (VMT) and energy use (including natural gas, electricity, and propane) grow proportionately with population growth, as do emissions from refrigerant leakage, waste disposal, and consumption -based activities. The assumptions regarding CAFE standar ds are adjusted to reflect the proportional lag in CAFE standards for cars purchased in a given year and the mix on vehicles on the road in that year (proportions based on 2015 data) . The Clean Fuels Program is reflected in fuel mix assumptions. The base a ssumptions , based on the 2015 inventory, for VMT, energy use, refrigerant usage, waste disposal, and consumption are included in Table 2 below. Table 2. Base Unit Assumptions Data Type 2015 Base Data Units VMT 77,383,279 Miles Natural gas 5,531,903 Therms Electricity 165,807 Megawatt hours (MWh) Refrigerant usage 7,400 Metric tons Waste disposal 6,923 Metric tons Consumption 166,731 Metric tons Based on national data in the Transportation Energy Data Book, 90.5 percent of the VMT is attributed to private vehicles, while the remaining 9.5 percent is associated with commercial vehicles.4 Additionally, 93 percent of VMT is assumed to be associated with light duty vehicles (cars and light trucks), while the remaining 9 percent is associated with heavy duty vehicles (single and combination trucks).5 4 Stacy C. Davis and Susan W. Diegel, “Transportation E nergy Data Book,” Oak Ridge National Laboratory and the U.S. Department of Energy Efficiency and Renewable Energy, 26 Edition, 2007, http://web.mit.edu/cron/Backup/project/urban_metabolism/TGOFF/readings%20and%20websites/Edition26_Full _Doc.pdf . 5 Stacy C. Davis and Susan W. Diegel, “Transportation Energy Data Book,” Oak Ridge National Laboratory and the U.S. Department of Energy Ef ficiency and Renewable Energy, 26 Edition, 2007, http://web.mit.edu/cron/Backup/project/urban_metabolism/TGOFF/readings%20and%20w ebsites/Edition26_Full _Doc.pdf .