Standards and Guidelines for Algae LCAs

Life cycle assessment (LCA) is a crucial tool to evaluate the environmental impacts of products and systems, including algae-based products and algae production and processing facilities. To conduct meaningful LCA studies, practitioners must navigate a complex framework of standards, guidelines, and initiatives. This information paper provides a concise overview of these resources, clarifying their roles and interrelationships. Standards, such as the International Organization for Standardization (ISO) 14040 and 14044, alongside the European Standard EN 17983, establish the foundational principles and requirements for algae LCAs, ensuring consistency and comparability across studies. Complementing these, guidelines such as the Product Environmental Footprint (PEF) introduced by the European Commission, the International Reference Life Cycle Data System (ILCD) Handbook, and Publicly Available Specification (PAS) 2050 deliver practical instructions to implement these standards effectively. In addition, projects and initiatives such as ALIGNED (“Aligning life cycle assessment methods and bio-based sectors for improved environmental performance”) and LCA4BIO (“Harmonised life cycle assessment methods for sustainable and circular bio-based systems”) promote methodological innovation and sector-specific alignment (or harmonisation) by addressing emerging challenges and enhancing collaboration. Understanding the complementary functions of these standards, guidelines, and initiatives enables practitioners to produce scientifically robust and transparent algae LCAs aligned with best international practices. This information paper serves as a foundational resource for selecting and applying the most appropriate frameworks and tools in algae LCA studies.