TrelliSense is on a mission to monitor 100% of human-caused GHG emissions, starting with methane and soon expanding to other gases (e.g. VOCs, NOx, ammonia). Using novel and proprietary continuous, stationary and long-range optical sensors, our platform can detect, localize and quantify gaseous emissions from point- and area-source emitters all at a fraction of the price of incumbent solutions. Primary applications include quantification at farms, landfills and wastewater treatment plants as well as leak detection along the gas supply chain (upstream wells, midstream processing/distribution and utilities).