Solar Energy: Global Capacity, Growth Trends, and How Solar Power Works TL;DR: Solar energy has become the world's fastest-growing electricity source, with global installed capacity exceeding 1,400 GW in 2024 and generation surpassing 1,300 TWh annually. This publication presents renewable energy statistics for the last decade (2015-2024). Renewable energy statistics 2025 provides datasets on power-generation. In 2025, global annual renewable capacity additions increased by 16%, reaching 800 GW despite challenges linked to supply chain strains, grid connection delays, financial pressures and policy shifts. Solar PV accounted. Solar accounted for 81% of all new renewable energy capacity added worldwide. The Global Market Outlook for Solar Power 2025–2029 is SolarPower.
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