The global climate technology sector experienced its busiest period on record for listings and acquisitions in the first half of the year, a milestone that could boost investor confidence and generate new funding for decarbonization technologies.
A total of 153 deals were announced in the first six months of 2026, according to a report released Monday by market research firm Currence. This is a 70% increase compared to the same period last year.
The majority of transactions were through acquisitions, an increase of approximately 65% year over year. Meanwhile, the climate technology industry has had its busiest period for initial public offerings since 2022. In the first half of this year, 17 climate technology companies listed on the stock exchange, raising a combined $6.7 billion. This would be the highest amount since the first half of 2022, before rising interest rates and tight capital markets caused the industry to slump.
However, the recovery is largely concentrated in parts of the climate technology sector. More than a third of acquired companies and almost 60% of IPOs operate in the energy sector. Three companies, geothermal developer Furbo Energy, advanced nuclear reactor company XEnergy, and power equipment manufacturer Forgent Power Solutions, accounted for about 65% of the funds raised through new stock issuance.
Jeff Johnson, general partner at B Capital, believes the energy-driven advantage is due to investors looking for technologies that can power artificial intelligence data centers and support broader electrification. Global data center power demand is expected to more than double by 2030, and “public markets are moving toward recognizing the value of many of these businesses,” Johnson said.
The concentration of energy reflects the “feast and famine” relationship across the green transition, said Joshua Posamentier, managing partner at Congruent Ventures. While clean energy providers are finding a relatively easy exit path, other subsectors such as sustainable food and agriculture still face an uphill battle, he said.
Posamantier said that despite the imbalance, the increase in trading “will definitely help” sustain the broader ecosystem’s funding cycle. Venture capital firms that back green startups have struggled to raise new capital in recent years, as investors seek returns before committing new capital.
There are other changes in the withdrawal from climate technology. During the sector’s last surge in stock market listings in the early 2020s, many companies went public through so-called special purpose acquisition companies (SPACs). More traditional stock sales are gaining popularity this time around, but such routes require greater scrutiny than usual. “This is a validation of where we are in the market and the mature exit we were all looking for,” said Currence co-founder Kim Zou.
Although climate change technology listings are only a small part of the broader global IPO market, the amount raised in the sector in the first half of 2026 nearly doubled from the previous six months, currency data showed. Zou said the pipeline for new listings is strong over the next six to 12 months, citing companies such as Nucleo and TAE Technologies that have already announced their intention to go public.
Whether this momentum can be sustained over the long term remains an open question. Several newly public climate technology companies have struggled with volatile stock prices, testing investor appetite. Despite a strong debut, Fervo Energy is currently trading about 35% below its all-time high, while X-Energy is down about 55% from its all-time high. Volatility highlights another reason behind the IPO boom. Zou said: [public] Go to the market as much as you can before that window closes. ”
Mr. Liu writes for Bloomberg.
