The latest data show that global renewable power capacity has moved from being a fast-growing part of the energy mix to becoming one of its defining pillars. By the end of 2025, renewable energy reached 5,149 gigawatts (GW) of installed capacity, accounting for 49.4% of global power capacity. In the same year, renewables made up 85.6% of all new power capacity added worldwide, underlining how decisively the market is shifting toward clean electricity.

This matters because global renewable power capacity is no longer growing at the margins. It is now expanding at a scale that is reshaping electricity systems, investment patterns, and energy security strategies. Still, the milestone needs careful interpretation: installed capacity is not the same as electricity generation. Renewables are approaching half of total installed power capacity, but their share of actual electricity generation remains lower because output varies by technology, weather, and system design. The International Energy Agency says renewables supplied 32% of global electricity generation in 2024, and projects that share to rise to 43% by 2030.

What the 2025 Numbers Say About Global Renewable Power Capacity

In 2025 alone, the world added 692 GW of renewable capacity, a 15.5% annual increase. Solar remained the main engine of this expansion, adding 511 GW, while wind contributed 159 GW. Together, solar and wind accounted for the overwhelming majority of new renewable builds, confirming that the growth of global renewable power capacity is now being driven primarily by technologies that are modular, increasingly low-cost, and faster to deploy than conventional thermal plants.

Key Data Points Behind the Milestone

• 5,149 GW of total renewable capacity installed globally by end-2025
• 49.4% share of global installed power capacity
• 692 GW renewable capacity added in 2025
• 85.6% of all global power additions came from renewables
• 511 GW of new solar capacity added in 2025
• 159 GW of new wind capacity added in 2025

These figures show that the energy transition is no longer driven only by policy ambition. It is being propelled by project economics, technology learning curves, and the strategic appeal of domestic energy sources such as sun and wind.

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Solar is Carrying Global Renewable Power Capacity Forward

If one technology defines the current phase of global renewable power capacity growth, it is solar. Reuters, citing IRENA, reported that global solar capacity rose by 511 GW in 2025 to reach 2,392 GW, making it by far the largest renewable technology in the installed base. IEA’s forward-looking analysis reinforces the same direction: between 2025 and 2030, renewable power capacity is projected to expand by almost 4,600 GW, with solar accounting for nearly 80% of that increase.

Why Solar is Dominating

1. It is faster to deploy

Solar projects, especially utility-scale and distributed rooftop systems, generally move faster than large fossil or hydro projects. IEA notes that low module prices and relatively efficient permitting in many markets are helping accelerate deployment.

2. It works at multiple scales

Solar can be built as rooftop systems for households and businesses or as utility-scale plants for grids. IEA says distributed solar alone is expected to account for 42% of overall PV expansion through 2030.

3. It keeps getting cheaper

IRENA reported that in 2024, 91% of newly commissioned utility-scale renewable projects produced electricity at a lower cost than the cheapest new fossil-fuel alternative. Solar PV projects were, on average, 41% cheaper than the lowest-cost fossil alternative.

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The Generation Gap: Capacity is Not the Same as Electricity Produced

A key nuance in discussing global renewable power capacity is that capacity does not tell the whole story. Solar and wind plants do not run at full output around the clock, so their share of installed capacity will often be higher than their share of actual electricity generation. That is why the world can be close to half renewable in installed power capacity while still generating a smaller fraction of total electricity from renewables. The IEA’s estimate of 32% renewable electricity generation in 2024 is a useful reminder of that distinction.

That said, the direction is still clear. Ember’s Global Electricity Review 2025 found that low-carbon sources supplied 40.9% of global electricity generation in 2024, while solar generation alone grew by 29%, a six-year high. The broader trend is that growing global renewable power capacity is steadily converting into a larger share of actual power supply.

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Who is Driving the Growth and Who is Being Left Behind?

The rise in global renewable power capacity is impressive, but it is not evenly distributed. Earth.org’s summary of the latest IRENA figures notes that China reached 2,258,016 MW of cumulative renewable capacity in 2025, up 24.2% from the previous year. It also notes that China, the United States, and the European Union together accounted for 79.5% of new renewable capacity installed globally.

The imbalance is even more visible in developing regions. Africa accounted for only 1.6% of global additions in 2025, despite posting a record 15.9% increase in renewable capacity, while the Middle East recorded 28.9% annual growth from a smaller base. These figures suggest that the challenge is no longer whether renewables can scale, but whether financing, grids, and policy support can be expanded fast enough in underserved regions.

Why This Imbalance Matters

• Countries with the fastest demand growth are not always the ones receiving the most clean energy investment.
• Grid infrastructure, storage, and affordable finance remain major bottlenecks in the Global South.
• A more balanced buildout is essential if global renewable power capacity is to translate into a fairer energy transition.

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Cost is No Longer the Biggest Argument Against Renewables

For years, critics argued that renewables were too expensive to be the backbone of modern power systems. That case is now much weaker. IRENA says that in 2024, renewables helped avoid USD 467 billion in fossil fuel costs. It also found that onshore wind was, on average, 53% cheaper than the lowest-cost fossil alternative, while solar PV remained strongly competitive as well.

This means the next stage of the clean energy transition is less about proving that renewables are viable and more about solving the surrounding system issues: transmission expansion, energy storage, grid flexibility, project permitting, and access to low-cost capital. Those are the real determinants of how quickly global renewable power capacity can move from near-half to clear majority status.

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Is the World on Track for 2030?

The 2025 surge is substantial, but it is not yet enough to guarantee that the world will meet the COP28 goal of tripling renewable capacity by 2030. Reuters reported that the 15.5% growth rate recorded in 2025 still falls short of the 16.6% annual pace needed to stay fully on track. IEA’s 2025 outlook is also constructive but cautious: under its main case, the world adds almost 4,600 GW of renewable power capacity between 2025 and 2030, while an accelerated case would push cumulative renewable electricity capacity to more than 10,400 GW, closing much of the gap to the global tripling target.

In other words, global renewable power capacity is moving in the right direction, but speed alone is not enough. The quality of policy design, grid readiness, and financing access will determine whether today’s momentum becomes tomorrow’s energy system.

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Conclusion

The fact that global renewable power capacity reached nearly half of all installed power capacity in 2025 is more than a symbolic milestone. It shows that renewables have become the default direction of power-sector growth. Solar and wind are scaling rapidly, costs remain competitive, and electricity systems are beginning to reflect that change.

But the story is not finished. The next chapter depends on whether countries can convert capacity growth into dependable electricity generation, spread investment more evenly across regions, and build the grids and storage needed to support a high-renewables future. If those pieces fall into place, the world will not just flirt with the 50% mark in global renewable power capacity. It will move far beyond it.

Key Data Table: 2025 Renewable Power Snapshot