The document discusses the methodology and procedures for establishing satellite accounts. It compares core national accounts, which follow agreed standards and cover the whole economy, to satellite accounts, which can deviate from core standards to cover specific areas linked to national accounts. It outlines the process for establishing a satellite account, including testing calculations, proposals to international bodies, and implementation in countries. Challenges include reaching conceptual agreement, ensuring reliable long-term data sources, and obtaining resources. Satellite accounts meet specific user needs and can improve information and eventually inform core accounts. Eurostat facilitates satellite account development and may promote certain accounts, but implementation relies on countries.