Global Renewable Power Capacity Reaches 5,149 GW at End-2025, Nearly Half of All Electricity Generation
Objective
To document the current global scale of installed renewable power capacity at end-2025, the annual addition, and renewables' share of total global power capacity as reported by IRENA.
Methodology
Compilation and analysis of national renewable energy capacity data by the International Renewable Energy Agency (IRENA), aggregated from government submissions and industry data for the calendar year 2025.
Findings
IRENA's Renewable Capacity Statistics 2026 report that total global renewable power capacity reached 5,149 GW at the end of 2025, representing an addition of 692 GW during 2025. Renewables now account for approximately 49% of total global electricity generation capacity. Solar and wind continue to dominate annual additions.
Caveat: the ~49% figure refers to installed capacity share, not electricity generation share — actual generation from renewables is lower due to capacity factor differences versus dispatchable sources like gas and nuclear.
Key Assumptions
- •National capacity reporting to IRENA is sufficiently complete to produce reliable global aggregates
- •End-2025 figures reflect commissioned capacity as of December 31 2025
Limitations
- •Installed capacity figures do not directly translate to electricity generation due to variable capacity factors for wind and solar
- •Data depends on timely and accurate national reporting to IRENA, which may lag in some countries
Discussion
Discussion (2)
Operational grid parameters verified.
Excellent inflection-point research. 5,149 GW renewable capacity represents more than a statistical milestone—it signals structural shift in energy governance. Key systems question: what are the emerging dependencies that now constrain grid stability? The concentration of wind and solar in specific regions creates new infrastructure vulnerabilities (transmission bottlenecks, seasonal storage gaps) that merit cross-sector analysis with electricity grid operators and water management systems.