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Energy system
Nuclear Power
A new era for nuclear energy beckons as projects, policies and investments increase
As the world’s second-largest source of low-emissions electricity after hydropower, nuclear power today produces just under 10% of global electricity supply. Now, fresh momentum around the world has the potential to open a new era for nuclear energy.
Power generation from the global fleet of nearly 420 active nuclear reactors is set to reach a record high in 2025 as Japan restarts production, maintenance works are completed in France, and new reactors begin commercial operations in various markets, including China, Europe, India and Korea…
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Commentary
13 Feb 2026
Global battery markets are growing strongly – and so are the supply risks
part 1- lithium-ion batteries Batteries’ importance is increasing across key sectors including autos, power, data centres and beyond The global lithium-ion battery market exceeded USD 150 billion in 2025, an increase of over 20% from 2024, but its economic and strategic significance extends far beyond market size. Batteries are becoming a cornerstone of the automotive sector, a critical source of flexibility for power systems, and an increasingly important source of back-up power for digital infrastructure, including data centres and artificial intelligence.Beyond energy, batteries remain indispensable for a wide range of industrial and strategic applications, from portable…
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Country
Tanzania
Electricity access in Tanzania increased from around 13% in 2008 to 32% in 2017. The government is supporting the private sector to develop its electricity market, enhancing the role of renewable energy in the energy mix and increasing rural electricity access.
- Overview
- Energy mix
- Emissions
- Electricity
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+ 5 pages
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Technology report
Dec 2025
Policy options to accelerate distributed solar PV in Ukraine
Accelerating distributed solar PV and battery energy storage deployment will support Ukraine in establishing energy security.In the year following the Russian Federation’s full-scale invasion of Ukraine in 2022, available dispatchable power generation capacity halved from roughly 38 GW to 19 GW. After severe attacks in spring 2024, capacity declined further, down to 12 GW. Towards the end of 2024 Ukraine was able to restore 3 GW and has worked to restore and add additional capacity throughout 2025, despite ongoing attacks.Distributed solar PV has played a key role, providing cost effective and rapid increases in electricity generation capacity, contributing…
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Country
Ethiopia
In Ethiopia, while electricity reaches less than half of the population, great progress has been made over the past two decades. The National Electrification Program, launched in 2017, outlines a plan to reach universal access by 2025, aiming to supply 35% of the population with off-grid solutions. Meanwhile, Ethiopia is diversifying its hydro-dominated installed generation mix in favour of solar, wind and geothermal to pursue a more climate-resilient power system and reach economic development objectives.
- Overview
- Energy mix
- Emissions
- Electricity
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+ 5 pages
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Country report
Jul 2025
Lithuania 2025
Energy Policy Review Government action plays a pivotal role in ensuring secure and sustainable energy transitions. Energy policy is critical not just for the energy sector but also for meeting environmental, economic and social goals. Governments need to respond to their country’s specific needs, adapt to regional contexts and help address global challenges. In this context, the International Energy Agency (IEA) conducts Energy Policy Reviews to support governments in developing more impactful energy and climate policies.This Energy Policy Review was prepared in partnership between the Government of Lithuania and the IEA. It draws on the IEA’s extensive…
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Flagship report
Mar 2025
Global Energy Review 2025
Global Energy Review 2025 This edition of the Global Energy Review is the first comprehensive depiction of the trends that took place in 2024 across the entire energy sector, covering data for all fuels and technologies, all regions and major countries, and energy-related carbon dioxide (CO2) emissions. The latest data show that the world’s appetite for energy rose at a faster-than-average pace in 2024, resulting in higher demand for all energy sources, including oil, natural gas, coal, renewables and nuclear power. This growth was led by the power sector, with demand for electricity rising almost twice…
- Key findings
- Global trends
- Oil
- Natural gas
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+ 3 pages
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Country
Belarus
Energy policy in Belarus focuses on providing reliable energy while reducing import–dependence, particularly on natural gas from a single supplier. The government is contemplating attractive investment measures and fuel diversification to reduce natural gas consumption and include more coal and renewables into the country's energy mix, while developing local energy sources and introducing nuclear power.
Belarus has also prioritized improving energy efficiency in electricity and heat production and is phasing out subsidies for electricity, heat and gas, which is expected to make the energy sector more market-focused and investor-friendly. Belarus is part of the EU4Energy Programme…- Overview
- Energy mix
- Emissions
- Electricity
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+ 5 pages
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Country
Poland
Poland’s energy system has seen progress on energy transition, despite its reliance on domestic hard coal and lignite. For example, Poland has one of the fastest growing solar PV markets in the European Union and has also seen a strong uptake of heat pumps. Poland is pushing to become a major player in offshore wind, aiming for at least 3.4 GW of capacity by 2030. However, stronger efforts are needed across all sectors to accelerate energy transition and Poland would benefit from greater electricity interconnections with the rest of Europe.
- Overview
- Energy mix
- Emissions
- Electricity
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+ 5 pages