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Green Bonds Cross $1 Trillion Milestone as Demand Outstrips Supply

Global green bond issuance has surpassed $1 trillion in cumulative volume, with 2026 on track to be a record year as institutional demand far exceeds available issuance.

RBN Editorial19 June 2026
Green Bonds Cross $1 Trillion Milestone as Demand Outstrips Supply

The Trillion-Dollar Threshold

Cumulative green bond issuance worldwide has crossed the $1 trillion mark, according to data from the Climate Bonds Initiative. The milestone highlights how rapidly the market for debt earmarked for environmentally beneficial projects has matured since the first green bond was issued in 2007.

Demand Far Outstrips Supply

2026 is on pace to set a new annual record, with issuance already up 28% year-on-year. Crucially, investor demand continues to far outstrip supply — most green bonds are oversubscribed by a factor of three to five times, driving yields down and making green financing cheaper for issuers.

Who Is Issuing?

Sovereign issuers including the UK, Germany, France, and Chile have led the way, while corporate issuance from utilities, banks, and technology companies is growing rapidly. A new wave of transition bonds — designed for companies moving away from carbon-intensive business models — is also gaining traction.

The Transparency Question

The rapid growth has raised concerns about greenwashing. Regulators in the EU and UK are tightening standards around what qualifies as a green bond, with the EU Green Bond Standard now requiring alignment with the EU taxonomy for sustainable activities.

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