The world reached a new milestone as low-carbon sources – renewables and nuclear – provided 40.9% of the world’s electricity generation in 2024, passing the 40% mark for the first time since the 1940s, according to a report by global energy think tank Ember.
Renewables were the main driver of overall clean growth, adding a record 858 TWh in 2024, 49% more than the previous high in 2022. Solar was the largest contributor for the third year running, adding 474 TWh to reach a share of 6.9%. Solar was the fastest-growing power source (+29%) for the 20th year in a row. Solar electricity has doubled in just three years, providing more than 2000 TWh of electricity in 2024. Wind generation also grew to 8.1% of global electricity, while hydro’s share remained steady at 14% – the single largest renewable source.
“Solar power has become the engine of the global energy transition,” said Phil MacDonald, Ember’s Managing Director. “Paired with battery storage, solar is set to be an unstoppable force. As the fastest-growing and largest source of new electricity, it is critical in meeting the world’s ever-increasing demand for electricity.”
Ember’s sixth annual Global Electricity Review provides the first comprehensive overview of the global power system in 2024 based on country-level data. It is published today alongside the world’s first open dataset on electricity generation in 2024, covering 88 countries that account for 93% of global electricity demand, as well as historical data for 215 countries.
The analysis finds that, despite the rise in renewables, fossil generation saw a small 1.4% increase in 2024 due to surging electricity demand, pushing global power sector emissions up 1.6% to an all-time high.
Heatwaves were the main driver of the rise in fossil generation, accounting for almost one-fifth (+0.7%) of the increase in global electricity demand in 2024 (+4%), mainly through additional use of cooling. Without these temperature effects, fossil generation would have risen by only 0.2%, as clean electricity generation met 96% of the demand growth not caused by hotter temperatures.
“Amid the noise, it’s essential to focus on the real signal,” continued MacDonald. “Hotter weather drove the fossil generation increase in 2024, but we’re very unlikely to see a similar jump in 2025.”
Aside from weather effects, increasing use of electricity for artificial intelligence (AI), data centres, electric vehicles (EVs), and heat pumps is already contributing to global demand growth. Combined, growing use of these technologies accounted for a 0.7% increase in global electricity demand in 2024, double what they contributed five years ago.
Clean power set to grow faster than demand
The report shows that clean generation growth is set to outpace faster-rising demand in the coming years, marking the start of a permanent decline in fossil generation. The current expected growth in clean generation would be sufficient to meet a demand increase of 4.1%/y to 2030, which is above expectations for demand growth.
“The world is watching how technologies like AI and EVs will drive electricity demand,” continued MacDonald. “It’s clear that booming solar and wind are comfortably set to deliver, and those expecting fossil fuel generation to keep rising will be disappointed.”
Beyond emerging technologies, the growth trajectories of the world’s largest emerging economies will play a crucial role in defining the global outlook. China and India are already shifting towards meeting their growing electricity needs with clean energy.
More than half of the increase in solar generation in 2024 was in China, with China’s clean generation growth meeting 81% of its demand increase in 2024. India’s solar capacity additions in 2024 doubled compared to 2023. These two countries are at the forefront of the drive to clean power and will help tip the balance towards a decline in fossil generation at a global level.
“Cleantech, not fossil fuels, is now the driving force of economic development,” concluded MacDonald. “The era of fossil growth is coming to an end, even in a world of fast-rising demand.”
For more news and technical articles from the global renewable industry, read the latest issue of Energy Global magazine.
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Read the article online at: https://www.energyglobal.com/special-reports/09042025/ember-world-surpasses-40-clean-power-as-renewables-see-record-rise/
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