With regard to environmental sustainability, dedicated LCI databases (e.g., ecoinvent 242 ) are often used to translate the system inventory into the system LCI, after which different LCIA methods can be used to quantify the environmental sustainability of the system. To streamline this process, environmental sustainability is often characterized using specific tools (e.g., SimaPro, 243 GaBi, 244 openLCA, 245 Brighway2, 246 GREET 247 ). These tools generally have embedded LCI databases and/or allow the importing of external LCI databases, and some of them are equipped with built-in functions or mechanisms (e.g., via inter-process communication 245 ) that allow the user to account for uncertainty.