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In 2025, a significant milestone was reached in the global energy sector, as clean energy generation outpaced electricity demand for the first time in modern history. According to data from Ember, an energy think tank, clean power expanded by 887 terawatt-hours, exceeding the demand growth of 849 terawatt-hours. This shift marked a pivotal moment, with renewable energy sources now accounting for 33.8 percent of the global electricity mix.
Solar energy played a crucial role in this development, experiencing a remarkable growth of 30 percent and fulfilling three-quarters of the net rise in demand. Together with wind energy, these two sources accounted for 99 percent of the new demand growth. Notably, both China and India, historically among the largest fossil fuel consumers, reported declines in fossil fuel generation for the first time this century. China saw a reduction of 0.9 percent, while India experienced a more significant drop of 3.3 percent.
This shift is attributed to both countries’ aggressive strategies to diversify their energy portfolios by integrating more renewables. China was responsible for over half of the global solar capacity and generation growth in 2025, along with a substantial increase in wind energy output. Meanwhile, India set new records for solar and wind generation, illustrating its commitment to renewable energy adoption.
Battery technology advancements have also contributed to this trend, as costs fell by 45 percent and storage capacity increased by 46 percent in 2025. This improvement allowed solar power to be utilized beyond peak daylight hours, with Ember estimating that newly added battery capacity can shift 14 percent of solar generation to other times of the day.
In the United States and Europe, significant new solar capacities were added, with the US contributing 85 terawatt-hours and Europe 60 terawatt-hours, despite slight increases in fossil fuel generation. This indicates a broader trend toward renewable energy, despite political pressures in some regions to maintain fossil fuel production.
The data from 2025 represents a starting point for the global transition to clean energy, demonstrating that renewables can now meet rising demand economically. However, the challenge remains to replace existing fossil fuel generation, a task that will require sustained deployment of renewable technologies over the coming years.
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