There has been no let-up in the huge demand for debt to finance capital-intensive data center projects. High yield bond issuance is surging to fill the funding gaps.
The total value of high yield bonds for AI infrastructure projects in the US reached US$26.6 billion in the first four months of 2026, already more than double the full-year issuance in 2025, according to Pitchbook.
In April, Meridian—a joint venture between cloud infrastructure start-up FluidStack and Coatue Management’s Next Frontier—raised a US$5.7 billion high yield bond to fund the construction of two data centers in Indiana. The deal was the largest US-dollar high yield bond sale related to AI, Bloomberg reports, and more than three times oversubscribed.
A cluster of other multi-billion-dollar high yield-linked deals have also progressed this year, including Tract Capital and Fleet Data Centers raising US$4.59 billion, and Core Scientific closing a US$3.3 billion deal.
Data developers tap all financing options
The momentum behind AI-driven high yield issuance comes despite extreme market volatility due to the conflict in Iran and rising energy prices.
The capital required to fund the multi-year infrastructure projects necessary to meet AI demand is so vast that investors and issuers have to look past near-term uncertainty to keep capital flowing.
JLL forecasts that global data center capacity will more than double by 2030 to keep pace with demand. The construction of facilities at this speed and scale will require an investment of up to US$3 trillion by the end of the decade.
The scale of funding required is simply too large for the traditional project financing ecosystem to digest. Project finance lenders are already at their maximum exposure to the issuers leading data center expansion. In response, issuers are exploring other options to fund capital expenditure, including private credit, mezzanine and hybrid structures and increasingly high yield bonds.
High yield with a difference
The high yield bonds raised to finance data center construction have developed a distinctive template that stands apart from conventional deals.
Data center high yield deals are incorporating features of project, real estate and construction finance to reflect construction execution risk and the fact that many of the financed assets are still in development and not yet operational.
This makes the financing structure and underwriting approach fundamentally different from a typical corporate high yield framework.
Data center high yield instruments may, for instance, include cash-sweep mechanisms. Rather than a mandatory pre-payment, issuers are often required to use 50% of surplus cash flow generated by the data center to make an offer to purchase bonds back from investors before funding dividend payments. Standard high yield bonds have fewer “project-finance style” covenants and offer more flexibility around cash usage.
Another point of difference in data center high yield bonds is the inclusion of lockbox structures and backstops. In a lockbox, tenants’ lease payments do not go directly to the data center developer but into controlled accounts—“lockboxes” that are controlled by a third-party trustee—to ensure cash is set aside to service debt first.
Backstops provide an additional layer of lender protection. In the Meridian deal mentioned above, for example, Google is backstopping the lease held by Fluidstack. If a tenant fails to make lease payments, the backstop provider will cover the contracted rent payments. This gives investors the comfort that the cash flows supporting bond repayments are covered.
Data center construction can be difficult to execute, and there is disparity in the risk and quality of projects. High yield investors are effectively underwriting the credit quality of the underlying tenant, and no two financing structures are exactly alike.
This demands strong legal counsel to conduct strict due diligence of underlying lease structures, tenant quality, power-supply arrangements and the resilience of projected cash flows. Classic non-amortizing, covenant-lite high yield structures must be buttressed with additional safeguards to account for these complexities.
Buoyant activity anticipated
Looking ahead to the rest of 2026 and beyond, analysts expect the pace of capital raising for data center construction to remain rampant.
The backlog of potential data center issuance is enormous, sustaining strong appetite from issuers. Morgan Stanley sees a pipeline of between US$40 billion to US$50 billion of near-term financing demand.
High yield stakeholders will continue to devise financing structures to keep pace with the demand. But other options will also emerge as issuers tap all available financing channels to sustain the pace of construction.
The market is still in the early stages of determining the optimal capital structure for data center projects, but financing optionality is developing rapidly to meet demand.