1. The Standard International Energy Product Classification (SIEC) and its relationship with the Central Product Classification (CPC)

2. What is SIEC SIEC – Standard International Energy Classification – the first internationally agreed classification of energy products Integral part of the International Recommendations for Energy Statistics (IRES) Clarifies long-used concepts and terminology within the energy statistics community

3. Challenges in matching CPC and SIEC CPC and SIEC differ significantly in concepts and structure – leading to a high number of split links in the correspondence table. CPC is a multipurpose classification of all products Largely built upon and influenced by the Harmonized System Largely built upon and influenced by the Harmonized System SIEC developed to serve the current needs of energy statisticians Builds and expands on currently (and historically) used concepts and terminology within the field of energy statistics Builds and expands on currently (and historically) used concepts and terminology within the field of energy statistics

4. The present document Attempts to summarize similarities and differences between CPC and SIEC. Attempts to achieve better correspondences by defining alternative categories by aggregation. These aggregations are intended to be illustrative, without making any specific recommendation. The focus is on the conversion of data from SIEC to CPC

6. Questions Is the creation of an alternative aggregation for energy products useful? Could CPC be further developed in the area of energy products, to better serve the needs of energy statisticans? Could SIEC be further developed to improve comparability with CPC?