Global Solar Capacity Surpasses 3 TW As Record 664 GW Added In 2025 And India Becomes Second-Largest Solar Market

Solar energy has reached a historic milestone in the global energy transition, with the world’s cumulative solar power capacity surpassing 3 terawatts (TW) in early 2026. This achievement highlights the remarkable pace at which solar technology is being deployed worldwide. The global solar fleet crossed the 2 TW mark less than two years ago and entered the terawatt era only four years earlier, demonstrating unprecedented growth in renewable energy adoption. Today, solar power supplies around 9% of global electricity demand, a figure that has tripled over the last five years.

The solar industry recorded another record-breaking year in 2025, adding 664 gigawatts (GW) of new capacity globally. This represented a 12% increase compared to 2024 and confirmed solar energy’s position as the leading driver of renewable energy growth. Solar accounted for approximately 77% of all new renewable energy capacity installed worldwide during the year. The amount of solar capacity added exceeded the combined additions from fossil fuel and nuclear power generation, underlining the technology’s growing importance in the global energy mix.

Regional analysis shows that the Asia-Pacific region continued to dominate the solar market. The region installed 487 GW of new capacity in 2025, representing 73% of total global additions and recording an annual growth rate of 17%. Europe remained the second-largest market, with 81.6 GW of new installations, although its growth slowed to 3%. The Americas added 71.9 GW and accounted for 11% of global installations, but it was the only major region to experience a decline, with capacity additions falling by 13%. Meanwhile, the Middle East and Africa remained the smallest market by volume, adding 23.7 GW, but recorded the fastest growth rate at 51%.

At the country level, solar deployment remained highly concentrated. The top ten solar markets were responsible for 82% of all new installations in 2025. China strengthened its leading position by installing a record 382 GW, accounting for 57% of the global market. For the third consecutive year, China added more solar capacity than the rest of the top ten countries combined.

India emerged as the second-largest solar market in the world, overtaking the United States. The country installed 45.7 GW of new solar capacity in 2025, driven largely by a strong pipeline of utility-scale projects. India’s annual growth rate reached 49%, making it the fastest-growing major solar market outside China. The United States fell to third place after installations declined by 14% to 43.2 GW. Germany secured fourth position with 17.4 GW of installations, while Brazil slipped to fifth place after a 23% decline brought annual additions down to 14.5 GW. Spain retained sixth place with 11.3 GW, and Saudi Arabia entered the global top ten for the first time by tripling its annual installations to 7.9 GW through large-scale utility tenders.

Despite the strong performance in 2025, the global solar industry is expected to face a temporary slowdown in 2026. Forecasts indicate that annual installations could decline by 8% to 612 GW, marking the first yearly contraction in more than two decades. The primary reason for this expected decline is a projected 24% reduction in China’s domestic solar market. Chinese installations are forecast to decrease by 93 GW following policy changes that ended fixed feed-in tariffs and shifted projects toward participation in wholesale electricity markets.

The slowdown is also linked to the fact that China achieved its combined 2030 wind and solar target of 1.2 TW in 2024, six years ahead of schedule. As a result, the market is adjusting to new policy frameworks and development plans. Nevertheless, growth is expected to continue in most other regions. Markets outside China are projected to add around 40 GW in 2026, with Asia-Pacific excluding China growing by 18%, the Americas by 11%, and Europe by 3%.

The rapid expansion of solar energy has also exposed several challenges. Many mature markets are facing issues such as grid congestion, increasing power curtailment, insufficient energy storage capacity, and episodes of negative electricity prices. These challenges are affecting project economics in countries including Germany and Spain. Analysts warn that if these bottlenecks worsen, global installations could fall to 501 GW in 2026. However, under more favorable conditions, installations could reach as high as 724 GW.

Industry experts believe the expected decline in 2026 is only a temporary adjustment rather than a long-term trend. Growth is forecast to resume in 2027, with annual installations rising to 689 GW and reaching 864 GW by 2030. By the end of the decade, global cumulative solar capacity is expected to exceed 6.6 TW, more than double today’s level.

Solar energy is also expected to play a central role in achieving the COP28 goal of tripling global renewable energy capacity to 11 TW by 2030. Current projections suggest solar alone could contribute around 60% of that target. Utility-scale projects are expected to remain the largest segment of the market, while rooftop solar continues to expand, increasingly paired with battery storage systems.

Countries are also viewing solar energy as a strategic tool for energy security. Australia has demonstrated this approach by combining large-scale solar deployment with rapid growth in battery storage, helping reduce dependence on natural gas during peak demand periods. Experts emphasize that future success will depend on grid modernization, energy storage investments, improved financing mechanisms, and stronger integration of solar power into national energy planning. The latest figures clearly show that solar technology has the scale, affordability, and growth potential needed to remain at the center of the global clean energy transition.