About the Conference The NHA Conference and Hydrogen Expo is the largest hydrogen conference in the U.S. and the longest running annual hydrogen conference in the world. This year, the NHA and its annual conference turns 20! Like past years, this event will be your best opportunity of the year to learn about breakthroughs, progress on commercialization challenges and network over a few days with the brightest minds and business leaders in the industry. Conference and Expo Fast Facts 1,500+ attendees 150+ speakers 100+ exhibitors 40+ conference sessions Several Dynamic, executive keynote addresses Many side events, including the popular Ride and Drive and tours