-
-
Data tool
21 May 2026
Energy Technology Classification System
A 360° view of energy technologies About this tool Our interactive explorer enables navigation of the revised 2025 edition of the International Energy Agency’s (IEA) energy technology classification system. The classification system is a structured framework that categorises energy technologies within nine main areas.Updated in co-operation with governments to reflect technological developments since its last revision in 2011, the classification now covers a full range of energy technologies, f...
-
-
-
-
-
-
Contributor
Valeria Arroyave Cardozo
Project Manager. Valeria Arroyave Cardozo is a Project Manager at the United Nations Industrial Development Organization (UNIDO), where she leads the Energy Efficiency for Livelihoods in Africa (EELA) Regional Project. The initiative focuses on transforming markets for energy-efficient appliances and services through enhanced policies, increased investments, and the development of sustainable local value chains.Since joining UNIDO in 2021, she has contributed to global efforts in sustainable cooling, energy efficiency, and the critical minerals supply chain, supporting the broader clean energy transition. Previously, Valeria spent five years at the United Nations Development Programme (UNDP), specializing in climate transparency and strengthening national capacities to meet climate commitments through Nationally Determined Contributions (NDCs) and greenhouse gas (GHG) emissions reporting.She holds an engineering degree and a Master of Public Administration and Sustainable Management. V...
-
Contributor
Masakazu Toyoda
Chairman and Chief Executive Officer, Institute of Energy Economics. Masakazu Toyoda has led the Institute of Energy Economics in Japan since July 2010. He is also a board member of several global organisations and companies. Prior to joining the IEEJ, he held prominent government positions in Japan, including Vice Minister for International Affairs at the Ministry of Economy, Trade and Industry.
-