Scope and objectThis technical report compiles the terms and symbols from the published IEC Standards cited in the normative references. The object of this technical report is to harmonize the terms and symbols used in the standards within the field of photovoltaic (PV) solar energy systems. It is the intent to update this technical report every three years to incorporate published standards not referenced herein. A two-step procedure will be followed for the preparation of the glossary. This technical report contains the terms and symbols used in published IEC PV standards. The step 2 document should be incorporated in this technical report as an annex and will deal with the terms and symbols from other national or international PV standards and relevant documents. NOTE ?C In order to harmonize slight differences between existing IEC standards some rewording of the definitions was necessary.