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IEA: Renewable energy will be fastest growing source

12 November 2025 12:40 (UTC +04:00)

One of the key issues for energy security in the era of electricity is how quickly new grids, energy storage systems and other sources of energy system flexibility can be built, APA-Economics reports, citing the International Energy Agency’s “World Energy Outlook – 2025” (WEO-2025) report.

“Some of these elements are currently lagging behind. Investment in electricity generation has increased by about 70% since 2015, but annual network costs have increased less than half as fast,” the report notes.

Although the growth rate varies between the different WEO-2025 scenarios, renewable energy – especially solar photovoltaic (PV) – remains the fastest growing source in all scenarios. By 2035, 80% of the growth in global energy demand will occur in regions with high solar radiation.

One thing the report has in common across all scenarios is a resurgence in nuclear power, with investment increasing in both traditional large-scale plants and new technologies such as small modular reactors. After more than two decades of stagnation, global nuclear power capacity is set to increase by at least a third by 2035.