SIST EN ISO 20675:2022 PDF

Overview

EN ISO 20675:2021 (ISO 20675:2018) is a harmonized CEN/ISO standard that defines terms, definitions and a classification scheme for biogas across the full chain: production, conditioning, upgrading and utilization. It covers biogas generated by anaerobic digestion, gasification and power-to-gas from biomass sources, and addresses safety, environmental, performance and functionality aspects during design, manufacture, installation, testing, commissioning, operation, inspection and maintenance.

Key topics and requirements

• Standardized terminology and definitions for core concepts (e.g., biogas, biomethane, anaerobic digestion, digestate, biogas flare, storage and pipelines).
• Classification scheme describing parameters to classify installations by:
  • size (small, medium, large),
  • type (domestic, industrial),
  • technique (digestion type, gasification, upgrading method).
• Lifecycle scope covering design, manufacturing, installation, construction, testing, commissioning, acceptance, operation, routine inspection and maintenance.
• Safety, environmental and performance focus to support development of health, safety and environmental protection guidelines for biogas installations.
• Informative annexes (e.g., Annex A explains scope; Annex B summarizes biogas characteristics, processes and classifications).
• Explicit exclusions - topics not covered include: public gas grid and grid injection quality specifications, transportation of compressed/liquefied biogas, transport of biomass/digestate, vehicle/ship gas engines, boilers/burners unless specifically used for locally produced biogas, and assessment of biomass sustainability.

Practical applications and users

EN ISO 20675:2021 is practical for organizations and professionals involved in the biogas sector:

• Biogas plant designers and manufacturers - for consistent terminology and classification during product development and documentation.
• Project engineers, constructors and installers - to align scope and safety/performance expectations across lifecycle phases.
• Operators and maintenance teams - to standardize inspection, testing and operational terminology.
• Regulators, certifiers and policymakers - to draft coherent regulations, incentive schemes and technical guidance.
• Consultants, auditors and procurement teams - for contracts, specifications and reporting that rely on common definitions.
• Industries deploying biogas systems - wastewater treatment plants, food & beverage, waste management, landfills, agricultural and small-scale household plants.

Related standards

EN ISO 20675:2021 complements standards that specify biomethane quality, grid injection requirements, vehicle fuel standards and transport/handling of compressed or liquefied gases. Note that detailed quality specifications and public grid injection requirements are intentionally excluded from this document and are addressed in other specialized standards.

Keywords: EN ISO 20675:2021, ISO 20675:2018, biogas standard, biogas production, biogas upgrading, biomethane, biogas conditioning, classification, terms and definitions.