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Flagship report
May 2026
World Energy Investment 2026 How we track investment in energy
Tracking energy investment The way investment is measured across the energy spectrum varies, largely because of differences in the availability of data and the nature of expenditures. This document highlights the methodology used to ensure that the estimates are consistent and comparable across sectors in the World Energy Investment 2026 (WEI 2026) report and other publications from the International Energy Agency. The IEA measures investment as the ongoing capital spending on assets. For some sectors, such as power generation, this investment is spread out evenly from the year in which a new plant or upgrade of an existing one takes…
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Energy system
Electric Vehicles
Global electric car sales continue to break records as affordability improves
Despite recent economic headwinds that have put pressure on the auto sector, global sales of electric cars have continued to break records as electric models become increasingly affordable. Electric car sales exceeded 17 million globally in 2024, reaching a sales share of more than 20%. Just the additional 3.5 million electric cars sold in 2024 compared with the previous year is more than the total number of electric cars sold worldwide in 2020.
In 2025, sales of electric cars are expected to surpass 20 million, accounting for over…
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Report
Jun 2025
Affordability
Multiple benefits of Energy Efficiency 2025 Energy efficiency provides multiple benefits. This page explores affordability. Why is energy efficiency important for affordability? Energy efficiency measures can reduce energy bills for households, decrease energy poverty, and make access to energy services more affordable. Key facts Energy efficiency measures can reduce average household energy bills in advanced economies by up to one-third. In emerging economies, they can also improve access to energy services. For many products, such as refrigerators, highly efficient models use less than half of the energy of inefficient models. A best-in-class model can save up to…
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Flagship report
Jul 2025
Universal Access to Clean Cooking in Africa Implications and policy considerations
A new recipe for success? Progress on clean cooking requires efforts from a wide range of stakeholders. These include efforts to enhance countries’ policy frameworks, address consumer affordability and other barriers to adoption, cultivate a skilled workforce and mobilise additional financing to the sector – themes discussed in this chapter.Access to low-cost debt will be key for companies to grow their customer base quickly. In the ACCESS, the share of debt financing in the sector increases from 35% today to over 50%. This depends on more financiers being able to assess and appropriately price risk clean cooking companies and…
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Country report
Sep 2023
Financing Clean Energy in Africa Designing finance solutions for clean energy: solutions for key sectors
Summary The doubling of energy investment in Africa seen under the Sustainable Africa Scenario (SAS) requires innovative solutions to fully mobilise capital from a range of providers – national governments, DFIs and private capital. Private capital plays a key role by 2030, increasing sixfold from today’s levels, but understanding where it can be deployed is essential to enable the design of targeted interventions. And there are still some countries and sectors where grants and concessional funding need to lead. Achieving universal access to modern energy requires a major uptick in spending, reaching roughly USD 25 billion per year by 2030. Affordability constraints…
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Fuel report
Dec 2022
Renewables 2022 Renewable electricity
Forecast summary The global energy crisis is pushing the accelerator on renewable energy expansion Global renewable capacity is expected to increase by almost 2 400 GW (almost 75%) between 2022 and 2027 in the IEA main-case forecast, equal to the entire installed power capacity of the People’s Republic of China (hereafter “China”). Renewables growth is propelled by more ambitious expansion policies in key markets, partly in response to the current energy crisis. This 85% acceleration on the last five years’ expansion rate results primarily from two factors. First, high fossil fuel and electricity prices resulting from the global energy…
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- Executive summary
- Hydrogen
- Road transport
- Steel
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+ 3 pages
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Technology report
Feb 2026
Clean Energy Technology Supply Chain Data Executive summary
Energy security in the Age of Electricity is inextricably linked to securing the supply chains for clean energy technologies and the equipment and materials used to manufacture them. As countries continue to pursue energy transitions and make investments in the deployment and manufacturing of these technologies – guided by industrial strategies – a detailed understanding of their supply chains has an essential role to play.The availability of good-quality, timely data is crucial to understanding clean energy technology supply chains and addressing vulnerabilities. Risks to supply chains can arise from interdependencies across technologies and between geographies, among other factors. Today, the…
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Country report
Apr 2025
Germany 2025 Executive summary
Germany is at an important inflection point in its energy transition. As one era of its energy history draws to a close, another is coming clearly into view – the move away from nuclear, coal and Russian natural gas contrasted by the transition towards renewables, low-emissions hydrogen, heat pumps and electric vehicles (EVs). While the world has been buffeted by geopolitical and geoeconomic challenges in recent years, Germany has worked hard to accelerate its clean energy transition. This report seeks to provide Germany with timely advice on how it can progress towards its energy and climate goals, including in three…
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