The US Department of Energy's Advanced Research Projects Agency-Energy (ARPA-E) has dedicated $18 million for nine projects focusing on hydrogen hazards detection. These projects, under ARPA-E's Exploratory Topic M: H2SENSE initiative, aim to develop a new generation of sensors capable of detecting and quantifying hydrogen concentrations in the range of parts per billion. The selected teams will work on creating fully integrated systems that encompass sensors, data transmission, dispersion, quantification analyses, along with necessary peripheral components and modeling for accurate hydrogen measurement. Some of the notable projects receiving funding include the GE Vernova Advanced Research Centre in New York for their H2-LOCATE initiative focusing on hydrogen leak localization and quantification, Colorado State University for its Hydrogen Emissions Monitoring System project, and Serinus Labs in California for their Parts Per Billion Hydrogen Plume Emissions Reports System. Other awardees include research institutions in states like Massachusetts, New Jersey, and Pennsylvania. One of the innovative projects aims to develop a mobile 20-parts per-billion-level self-cleaning plasmonic hydrogen sensor system to enhance sensitivity compared to current sensors. Overall, these initiatives highlight the growing focus on advancing hydrogen sensing technology and monitoring capabilities in the US to address potential hazards and emissions in various industrial settings.