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Best Practices and Insights to Expand Clean Energy Access and Adoption
…follow low-emissions practices and are resilient and inclusive. It draws on international evidence, including workshop discussions, IEA analysis and a wide range of global case studies, to identify key impacts and lessons learned from evidence and practice. It highlights how behaviour change is most effective when supported by coherent policy frameworks, targeted measures addressing affordability and structural changes across sectors such as buildings, transport and appliances. By identifying good practices and practical insights, the report provides guidance to support policymakers design inclusive strategies that enable sustainable lifestyles and ensure the benefits of the energy transition are shared by all.
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International collaboration continues to power innovation in energy technologies
…Many of the original initiatives remain active today, continuously evolving to meet emerging technological breakthroughs and global energy challenges. The newest TCP – established earlier this year – focuses on Critical Minerals and Material Recovery, an increasingly important topic for policymakers and technology developers. This week, representatives of the TCPs are convening at the IEA’s headquarters in Paris for the sixth Universal TCP Meeting. Participants will focus on priorities for strengthening international collaboration on innovation and the role that innovation plays in supporting governments’ ambitions to achieve a secure, sustainable and affordable energy future. The meeting will also welcome the Mission…
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Energy Efficiency 2025
Market Report Energy Efficiency 2025 is the IEA’s primary annual analysis on global energy efficiency developments, showing recent trends in energy intensity and demand, investment, employment and policy. The report provides sector-specific analysis on industry, buildings, appliances and transport and explores system-wide themes such as emissions reductions, energy security, affordability and competitiveness. This report is launched in parallel with an update to the IEA Energy Efficiency Progress Tracker, which can be accessed through the IEA website.
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Electrolysers
Country and regional highlights
Progress is spread across different continents, from China, which leads on installed capacity, to the European Union, which have adopted important policies, and other regions like India and the Middle East moving forward with a small number of large-scale projects
Technology deployment
Global installed electrolyser capacity reached 1.4 GW at the end of 2023, almost double the one at the end of 2022
Technology manufacturing
Innovation
Policy
Investment
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The State of Energy Innovation 2025
A comprehensive assessment of recent progress and emerging challenges in energy technology innovation Global energy innovation is evolving rapidly, shaped by technological advances, increased public and private investment, and a shifting international landscape. This report provides a comprehensive assessment of recent progress and emerging challenges in energy technology innovation, drawing on over 150 innovation highlights and a survey of practitioners across 34 countries. It analyses trends in public and corporate R&D spending, venture capital flows, and technology demonstration efforts, highlighting an increasingly international landscape, with emerging economies making strides alongside traditional leaders. The report documents the increasing focus on…
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Overview graphic: key technology trends for EVs
…2026 - Chapter 8 Electric vehicles (EVs) are increasingly at the centre of innovation in the automotive sector, bringing advances that extend far beyond developments in batteries and power electronics, thanks to several mutually reinforcing factors. Key technology trends are aligning in favour of EVs Battery electric vehicles (BEVs) are mechanically simpler than internal combustion engine vehicles (ICEVs) or hybrids, making them more compatible with digitalisation and automation. The relative simplicity of electric drivetrains enables shorter development cycles for new vehicles, allowing emerging technologies to reach BEVs sooner than vehicles with other powertrains.While the transition from mechanical to software-based…
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IEA Guide to Reporting Energy Technology RD&D Budgets
This manual, developed by the International Energy Agency (IEA), provides comprehensive guidance for national experts responsible for reporting energy technology research, development, and demonstration (RD&D) budgets. It outlines the methodology and classification system used to collect and structure RD&D data across IEA member countries, ensuring consistency and comparability. The manual is divided into two main sections: fundamentals of RD&D budget reporting and a detailed classification of energy technologies. It defines RD&D in alignment with the OECD Frascati Manual and clarifies the scope of public and private sector reporting. It also provides instructions for completing the IEA…
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Carbon Capture, Utilisation and Storage
Carbon Capture, Utilisation and Storage
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The State of Energy Innovation 2026
…and emerging challenges in energy technology innovation, drawing on over 150 innovation highlights from 2025 and a survey of practitioners across more than 40 countries. It analyses trends in public and corporate R&D spending, venture capital flows, patenting and policy, as well as providing an update on progress towards the 18 IEA Races to First in energy innovation. This data-driven approach informs policy makers, industry and other stakeholders on the state of energy innovation worldwide and the importance of sustaining innovation momentum over the long term.The report finds that the context for energy innovation is tilting towards…
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Why the growth of energy service companies is uneven globally
…more than 130 energy cooperatives adopted ESCO business models in 2025 – double the previous year. In Italy, where 900 companies are certified as ESCOs, average market revenues increased by over 78% in the past three years.Overall, ESCO markets scale up where policy frameworks are durable, procurement rules are aligned with performance contracting, and projects are implemented through standardised processes. In markets lacking these conditions, high transaction costs, contractual complexity and policy uncertainty continue to limit demand. These barriers are most visible in smaller scale and residential building projects, where ESCO models based on energy savings are harder to implement…