1. Systems Assessment Center, Energy Systems and Infrastructure Analysis Division, Argonne National Laboratory, 9700 South Cass Avenue, Lemont, Illinois 60439, United States
2. Strategic Analysis, Office of Energy Efficiency and Renewable Energy, U.S. Department of Energy, 1000 Independence Ave. SW, Washington, District of Columbia 20585, United States
3. Hydrogen and Fuel Cell Technologies Office, U.S. Department of Energy, 1000 Independence Ave. SW, Washington, District of Columbia 20585, United States
4. Hydrogen and Fuel Cell Technologies Office, U.S. Department of Energy, 15013 Denver West Parkway, Golden, Colorado 80401, United States