Photo voltaic surpasses nuclear energy globally for first time

The World Nuclear Industry Status Report (WNISR) 2026, overseen by French nuclear power advisor Mycle Schneider, exhibits that wind energy alone surpassed nuclear era on a month-to-month foundation in March 2025, adopted by photo voltaic in April – the primary time international month-to-month photo voltaic era exceeded nuclear output.

From March 2025 by June 2026, both photo voltaic or wind individually generated extra electrical energy than nuclear each month. In March, April and May 2026, each applied sciences independently surpassed nuclear era.

Increasing hole

According to the report, the hole between renewables and nuclear widened considerably in 2025. Global photo voltaic capability elevated by 510 GW to 2,383 GW, up 27% yr on yr, whereas wind added a document 159 GW to achieve 1,291 GW, a rise of 14%. By comparability, put in nuclear capability rose by simply 1.5 GW to 399.5 GW, whereas working nuclear capability declined by 0.5 GW to 368.6 GW. The report notes that nuclear capability has remained primarily flat for greater than 25 years, whereas wind and, notably, photo voltaic have expanded quickly.

The report’s PV figures, nonetheless, are primarily based on comparatively conservative estimates. More latest information from IEA PVPS point out that international PV additions reached round 690 GW in 2025, about 180 GW greater than the determine utilized by WNISR. This suggests the hole between photo voltaic and nuclear capability – and their respective progress charges – was even wider than indicated within the report.

“The actuality of the nuclear trade on the bottom is kind of sobering for many who anticipated to discover a booming sector,” Schneider informed pv journal. “Recently, U.S. nuclear firm Holtec put an preliminary public providing (IPO) on maintain simply days earlier than its deliberate inventory market itemizing, by which it had hoped to lift nearly $1 billion. Its peer, Fermi, has misplaced about 80% of its inventory worth because it was first listed in October 2025.”

“The major cause? These corporations have little or nothing to indicate on the bottom to persuade traders to proceed offering money,” he added. “Meanwhile, the globe’s working nuclear fleet elevated output by 1.1% – with output declining outdoors China – whereas international solar energy era jumped by a surprising 30%, surpassing nuclear’s annual electrical energy manufacturing for the primary time. One is tempted to say: It’s the expansion charges, silly!”

The report identifies falling battery prices as a possible enabler of continued PV growth, notably as grids take care of rising volumes of variable renewable era and intervals of low or destructive electrical energy costs. Grid-scale battery deployment accelerated sharply in 2025, with 104 GW and 257 GWh linked in the course of the yr. More than 78% of cumulative battery power storage system (BESS) capability was put in between 2023 and 2025.

Slow growth

The report exhibits that the worldwide nuclear sector is increasing slowly, with most new exercise concentrated in China and Russia. As of July 1, 2026, 411 reactors have been working in 31 international locations, excluding 30 models in long-term outage, with working capability at 374.7 GW. In 2025, nuclear vegetation generated 2,703 TWh, up 1.1% yr on yr, largely pushed by a 7.6% improve in China. Outside China, nuclear era declined by 0.2% and remained nicely under its 2006 stage. Nuclear’s share of world electrical energy era slipped to eight.8%, its lowest stage in 4 and a half a long time and roughly half its 1996 peak of 17.5%.

Four reactors began supplying electrical energy in 2025, whereas seven closed, ensuing within the first destructive annual reactor stability since 2021. Between 2006 and 2025, 104 reactors began up and 106 closed. China accounted for 53 of these startups and no closures, which means the remainder of the globe recorded a internet decline of 55 reactors. Although international nuclear capability elevated by a internet 21.5 GW over the 20 years, China alone added 52.3 GW, whereas capability outdoors the nation fell by nearly 30.7 GW.

The development pipeline has however expanded. Seventy-three reactors have been beneath development as of July 1, the very best quantity since 1987, with China accounting for 37. Russia stays the dominant transnational provider, with Russian expertise concerned in 29 reactors beneath development worldwide, together with 22 outdoors Russia. Nine out of 10 reactors being constructed are in Asia or Eastern Europe.

Long development instances and delays stay a function of latest nuclear initiatives, in keeping with the report. None of the 16 reactors linked to the grid between 2023 and 2025 was accomplished on schedule, with a median development interval of 10.9 years. Of 13 reactors scheduled to begin producing electrical energy in 2025, solely 4 did so. Some initiatives have skilled exceptionally lengthy timelines, together with Slovakia’s Mochovce-4, the place development started greater than 40 years in the past, and Iran’s Bushehr-2, the place development initially began in 1976.

Construction begins accelerated in 2025, nonetheless, reaching 12 models, the very best annual complete since 2010. Nine have been in China, two in Russia and one in South Korea. Of the 52 reactor development begins recorded worldwide between 2020 and 2025, all however one concerned the Chinese or Russian nuclear industries, both domestically or overseas.

Limited progress on small modular reactors

The report questions whether or not small modular reactors (SMRs) can ship on their long-standing business guarantees, noting that progress stays restricted regardless of rising authorities help and public funding.

“For a long time, small modular reactors have been held out as holding nice promise for increasing nuclear energy into varied new exchanges. Remarkably related claims have been made by the nuclear trade in a number of international locations. Nowhere have these claims come true,” the authors mentioned.

The authors problem a number of claimed benefits of SMRs, together with decrease prices, modular development, improved security, lowered waste and simpler siting. Many commercially proposed designs are 300 MW or bigger, whereas an evaluation cited within the report suggests some SMR designs might generate between two and 30 instances extra nuclear waste than bigger reactors.

The report additionally questions whether or not modular manufacturing can obtain economies of scale with out a big and predictable market. Still, SMR initiatives are advancing in a number of international locations. Canada started development of GE-Hitachi’s BWRX-300 in 2026, whereas China continued testing its Linglong One demonstration reactor. Russia is creating floating and land-based SMRs, whereas the Czech Republic and Sweden are pursuing Rolls-Royce initiatives. The report questions whether or not the EU can meet its purpose of deploying its first SMRs by the early 2030s.

The United Kingdom has dedicated £2.6 billion ($3.5 billion) to advance three Rolls-Royce reactors at Wylfa, with a ultimate funding resolution anticipated in 2029. At 470 MW, the design exceeds the generally used 300 MW threshold for SMRs.

In the United States, federal funding helps initiatives involving GE Vernova, TerraPower, X-energy and Kairos Power. While some have reached allowing or development levels, many stay years from business operation. Overall, the report says SMR growth stays closely depending on public funding, whereas business deployment, development timelines and the claimed advantages of modular development stay unsure.

Global overview

The report additionally gives detailed country-level assessments protecting developments in main nuclear exchanges and potential newcomer international locations, in addition to nuclear decommissioning, the Fukushima catastrophe and Russia’s nuclear interdependencies.

These sections study reactor operations, newbuild plans, closures, coverage developments and the challenges related to getting older fleets. The report additionally tracks the dismantling of closed reactors, developments in Japan 15 years after the Fukushima accident, and the nuclear trade’s persevering with expertise, gasoline and supply-chain hyperlinks with Russia.