• 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 Administ...

        • Contributor

        Pablo Hevia-Koch

        Head of Renewable Integration and Secure Electricity. Pablo Hevia-Koch is the Head of Renewable Integration and Secure Electricity at the International Energy Agency (IEA). In this role, he oversees work on integration of renewables in power systems, electricity security, power grids, and electricity market design, focused on both emerging and established economies. An electrical engineer by training, he holds a Ph.D. in Energy Economics from the Technical University of Denmark. 

        • Contributor

        Jose M Bermudez

        Energy Technology Analyst. Jose M Bermudez is an Energy Technology Analyst at the International Energy Agency (IEA), where he coordinates the analytical work of the IEA in hydrogen technologies. He is also the coordinator of the Clean Energy Ministerial Hydrogen Initiative. Jose has more than 15 years of professional experience, working in research, innovation and energy policy in the areas of hydrogen, bioenergy and alternative fuels.

        • Contributor

        Fabian Voswinkel

        Energy Efficiency Policy Analyst.

        • Commentary

        • 17 Feb 2026

        Sodium-ion battery momentum grows, but challenges remain

        batteries commentary sodium batteries Recent technological advances and investment announcements suggest dynamics are shifting for sodium-ion batteries Sodium-ion batteries are emerging as a new player in battery markets, offering opportunities to diversify battery chemistries and supply chains at a time of rising global demand for electric vehicles and energy storage. Developed in laboratories since the early 1980s, sodium-ion batteries operate on the same fundamental principles as lithium‑ion batteries – which currently dominate the market – yet their path to commercialisation has been markedly slower.While lithium-ion batteries entered commercial use in the 1990s – with the first electric vehicles…

        • Contributor

        Amani Al-Saidi

        Former Energy Data Officer.

        • Contributor

        Piotr Bojek

        Energy Analyst - Renewable Energy Markets and Policies.

        • Country

        Eswatini

        Eswatini

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        • Contributor

        Marta Silva

        Former Energy Data Officer.

        • Contributor

        Ebio Vitor

        Former Energy Data Officer.

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