Cost-effective emission cap (IMAGE) Hong Kong University of Science and Technology Caption Cost-effective emission cap: Minimum levelized cost of hydrogen (LCOH, in euro per kilogram of hydrogen, EUR/kg H2) and area (in square kilometers, km2) Credit HKUST Usage Restrictions None License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.