Hydrocarbon Processing defines "sustainability in the HPI" as the process of managing available resources, investments and technologies to maintain and optimize operations for greater safety, reliability, efficiency, and environmental and social awareness. The HPI is currently undergoing an energy transition, which includes new technologies and processes to limit carbon emissions, reduce energy intensity and boost sustainable operations. The following technical articles provide the latest advancements in the HPI's sustainable future. This eBook is a 144-page compilation of HP articles over the past 2 years.