United Nations Statistics Division

Standard International Standard International Energy Product Energy Product

Classification (SIEC)Classification (SIEC)

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

Definitions in SIEC

Based on agreements reached by InterEnerStat

Consolidated previous definitions used by more than 20 organizations in the field of energy statistics

Scope of SIEC is based on energy statistics concepts

Structure of CPC Numerical coding system Classification has four levels Classification meets criteria

drafted for the Family Critical point

Some definitions are not purely product based, but consider also process / point of collection

This results in difficulties for SIEC-CPC link

Relationships with other classifications

Most important: Central Product Classification (CPC) Harmonized System (HS)

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 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

Issues described in previously published document (for EGM 2011)

Impact on CPC Ver.2.1 update

Intent was to consider changes to CPC to accommodate a better link to SIEC Mostly intended as additional detail Harmonization of terminology

Intent was to link CPC subclasses (5-digit) to SIEC divisions (2-digit)

Impact on CPC Ver.2.1 update

Terminology for coal has been aligned with SIEC, i.e. energy terminology"Lignite", "Brown coal" etc.

Definitions for petroleum products have been aligned with SIEC Detail in CPC group 333 (not further

detailed in HS)

Impact on CPC Ver.2.1 update Limitations in achieving a better link Boundary issues could often not be

fully resolved Some expected CPC detail may not be

sustainable e.g. black liquor

Some SIEC categories mix products that should be separate in CPC e.g. crude oil and hydrogen

Next steps Some changes in CPC have been carried out To achieve a better link between CPC and SIEC,

changes to SIEC will also be necessary This has to go through a process with

InterEnerStat Not expected to be started/completed in the

very near future Should be on the agenda for the next CPC

review, combined with a SIEC review

Issues related to scope will most likely remain e.g. SIEC considers only the part of some

products that is used for energy purposes