Record green debt issuance in 2025 driven by infrastructure demand despite policy headwinds

Investors have poured record sums into climate-labelled debt in 2025 even as political headwinds and questions over green credentials have shaken parts of the sustainable finance market, according to data and market participants.

Bloomberg Intelligence shows global green bond and loan issuance reached $947 billion this year, a level that industry analysts say reflects a shift in how investors treat climate-themed assets. According to the report by Bloomberg, green and renewable-related stocks have also rallied, with clean-energy indexes from S&P Dow Jones Indices and WilderShares surging this year after years of underperformance.

The flows have come despite regulatory and policy rollbacks in some major markets. S&P Global warned earlier in the year that US policy shifts under President Donald Trump , including moves to support fossil fuels and dismantle clean-energy subsidies , could cast a shadow over green issuance. Europe too has eased some environmental rules amid competitiveness concerns, yet issuance in both regions remained substantial, industry figures show.

Asia-Pacific was a standout, raising roughly $261 billion of green debt, up about 20% year-on-year, with China and India front and centre in financing renewables, Bloomberg Intelligence found. China alone posted a record $138 billion of green bond issuance, led by its largest banks, and even launched a sovereign green bond in London. The greenium , the small borrowing-cost advantage for labelled green bonds , was most pronounced in Asia-Pacific, with some issuers securing more than a 14-basis-point discount in November, according to BloombergNEF cited in Bloomberg’s coverage.

Market participants point to demand drivers beyond policy. Bloomberg and other market reports highlight an almost 4% expected rise in global electricity demand this year driven by artificial intelligence, cooling and electrification, which has boosted investor appetite for grid upgrades, storage and other infrastructure. “Green investments are increasingly becoming viewed as core infrastructure and industrial plays, not just niche ESG trades,” Melissa Cheok, associate director for ESG investment research at Sustainable Fitch, told Bloomberg. “Capital is likely flowing toward areas with clear revenue visibility, policy backing and structural demand such as grid upgrades and renewables tied to electrification.”

Bank and underwriting activity reflected the boom: BNP Paribas SA and Crédit Agricole SA ranked among the top green bond underwriters this year, Bloomberg data show. BNP Paribas Asset Management’s Crystal Geng said easing US rates and refinancing needs could lift global green bond sales to as much as $1.6 trillion next year, according to Bloomberg’s reporting.

Broader bond-market dynamics have reinforced issuance. Bloomberg reported in November that global bond sales overall surged to a record $5.94 trillion in 2025, with financing demand expanding across sectors such as AI and acquisitions. The London Stock Exchange Group said green debt markets had passed earlier milestones, reporting $467 billion of green bond issuance by the end of the third quarter.

Not all measures of sustainable finance rose in tandem. Bloomberg Intelligence found sustainability-linked debt sales fell about 50% to $165 billion amid greenwashing concerns, while transition bond issuance for hard-to-abate sectors more than halved to $10.9 billion. Sustainable Investing Monitor reported issuance of labelled sustainable debt at about $918 billion by early November 2025, with green bonds continuing to constitute the majority of labelled deals.

Regional nuances mattered. US green debt issuance fell roughly 7% to $163 billion, and supranational green bond sales also slipped, while Germany’s volumes held steady. India emerged as both a strong issuer and a borrower market: the country saw record green loan volumes and a hotspot for renewable-energy IPOs, though strong foreign-bank appetite has tightened financing margins for projects, industry bankers told Bloomberg.

Analysts caution the market is evolving rather than simply expanding. LSE Group research cited by Bloomberg noted that outstanding green bonds have grown at a roughly 30% compound annual rate over the past five years and account for a rising share of global issuance, yet regulatory changes in Europe that allow asset managers greater leeway to define sustainability could shift flows toward emissions-reduction projects in higher-emitting sectors, Robeco’s Xuan Sheng Ou Yong said in Bloomberg’s coverage.

The picture that emerges is of a market balancing competing forces: strong investor demand and secular shifts in electricity and infrastructure needs driving record green-labelled issuance, while policy reversals, scrutiny over sustainability claims and uneven regional trends temper some corners of the market. Industry data and bank forecasts suggest issuance could climb further next year if financing conditions remain favourable, but market participants say the durability of flows will hinge on clearer policy signals, stronger project pipelines and continued confidence in green labelling.