DUBAI: Saudi Arabia’s Public Investment Fund was set to raise $3 billion on Wednesday in its first foray into the debt capital markets, taking advantage of a brief period of calm to become the first sovereign wealth fund to issue green bonds.

PIF joined a flurry of other issuers tapping the market after a run of heightened volatility that has lasted most of the year, selling the first-ever green bonds with a 100-year maturity alongside two other tranches of the issue.

The $500 million of 100-year notes will be sold at a yield of 6.7 percent, a bank document showed, $1.25 billion in five-year bonds were launched at 125 basis points over US Treasuries and $1.25 billion in 10-year paper at 165 bps over USTs.

Initial price guidance for the five- and 10-year paper was tightened by 25 bps, while the 100-year tranche had been indicated in the 7-7.25 percent area.

The inclusion of 100-year bonds was the result of investor enquiries, a source with knowledge of the deal said, with market watchers adding that the long maturity reflected the issuer’s confidence.

Overall demand topped $22 billion, with the five-year drawing more than $10.3 billion of interest, the 10-year attracting over $8.5 billion and the 100-year more than $3.2 billion, the bank document showed.

The fund, which manages more than $600 billion in assets and plans to grow that to over $1 trillion by 2025, is at the center of Saudi Arabia’s agenda to diversify the economy away from oil, spearheaded by Saudi Crown Prince Mohammed bin Salman.

PIF expects to invest more than $10 billion by 2026 in eligible green projects, including renewable energy, clean transport and sustainable water management, an investor presentation for the bonds showed.

By comparison, the fund has said it would invest about $40 billion domestically each year through 2025, although it reached little more than half that target last year.

Issuance of green bonds, proceeds from which are used to finance sustainable activity, has jumped from $2.3 billion in 2012 to $511.5 billion last year, based on Refinitiv data.

“Issuance of green bonds appears to be accelerating which is welcome news for a region that has an important role to play in the global (energy) transition,” said Dino Kronfol, Franklin Templeton’s chief investment officer of global sukuk and MENA fixed income.

Saudi Arabia is targeting net-zero carbon emissions by 2060.

BNP Paribas, Citi, Deutsche Bank, Goldman Sachs and JPMorgan are joint global coordinators and active bookrunners on the deal.