SpaceX's $20bn bond deal: AI ambition meets ESG backlash

Less than two weeks after completing what became the largest initial public offering in Wall Street history, SpaceX is returning to capital markets. Bankers for Elon Musk’s company are preparing to hold calls with investors to discuss a potential bond offering of at least $20 billion.

The bond proceeds would refinance a temporary $20 billion bridge loan that matures in September 2027, a loan that makes up the bulk of SpaceX’s $29.1 billion of long-term debt as of March 31. That bridge facility was arranged to fund the company’s acquisition of Musk’s AI startup xAI in February. The merger brought AI, rockets, satellite internet, and media platforms under a single corporate umbrella, with Musk describing it as the creation of an “innovation engine.”

The bond offering would be the first time SpaceX has issued investment-grade US dollar bonds, and the company has told investors it has secured investment-grade ratings from three major bond graders, paving the way for cheaper borrowing as it continues to raise financing after its IPO. Moody’s, Fitch, and S&P all issued those ratings on the same day SpaceX shares fell nearly 4%, a paradox that captures the contradictions now surrounding one of the most discussed companies in technology.

The AI infrastructure rationale

The bond deal is inseparable from SpaceX’s ambitions in compute infrastructure. As Capacity reported, Anthropic has signed an agreement to take all of the compute capacity at SpaceX’s Colossus 1 facility in Memphis, Tennessee, giving the Claude maker access to more than 300 megawatts of infrastructure. That deal, worth a reported $1.25 billion per month, is the kind of revenue anchor that makes SpaceX’s financing strategy legible even when its headline financials remain stretched.

SpaceX also has a roughly $45 billion deal with Anthropic over approximately the next three years, alongside a $30 billion computing power agreement with Google’s Alphabet that runs through mid-2029. These are not speculative numbers; they represent committed revenue from two of the industry’s largest AI spenders, and they matter enormously to bond investors trying to model a company that posted a net loss of $4.28 billion in the first quarter of 2026 alone.

The longer arc here is orbital. SpaceX has said one solution to flailing electricity and computer-capacity growth could be putting data centres and other infrastructure in space using SpaceX launches. The company unveiled its AI1 satellite concept ahead of its IPO, a solar-powered orbital compute node that Musk positioned as a long-term answer to the power, cooling, and land constraints that are already limiting hyperscale data centre expansion on the ground.

Amazon has borrowed more than $82 billion since the start of 2025. Oracle has said it planned to raise between $45 billion and $50 billion in 2026 through a mix of debt and equity. SpaceX is joining that financing wave, but it does so from a materially different position than those profitable peers.

The ESG question no one is ignoring

The bond deal lands against a backdrop of mounting governance scrutiny. SpaceX received MSCI’s lowest ESG rating, a CCC, just days before its public offering, raising fresh questions about the company’s governance practices and sustainability credentials. The June 11 assessment placed SpaceX at the same level as the Russian state on its government ESG scale, a rating assigned after the 2022 invasion of Ukraine. The company scored 1 out of 10 in MSCI’s controversies category and 3.2 out of 10 on governance metrics.

The governance concerns include concentrated insider control, limited shareholder rights, and questions about board independence, issues that will be familiar to anyone following SpaceX’s corporate structure. Elon Musk currently owns around 42% of the company but holds approximately 85% of voting rights, drawing criticism over the degree of control he exercises.

Musk’s response was characteristically blunt. He posted on X that “unfortunately, electric rockets are impossible,” dismissing ESG rules that penalise emissions-intensive industries despite what he described as technological limitations. It echoed his 2022 response when Tesla was removed from the S&P 500 ESG Index despite being the world’s leading electric vehicle manufacturer, a decision he called a “scam.”

The governance dimension sits alongside a more specific environmental record. As a US regulator ruled that xAI had acted illegally by using methane gas turbines to power its large data centres in Tennessee, with the Environmental Protection Agency declaring that the electricity-generating turbines were not exempt from air quality permit requirements. The NAACP had initiated a lawsuit against xAI the previous July citing Clean Air Act violations.

In 2026, ESG ratings will cease to occupy their regulatory grey zone and become regulated market instruments, subject to a level of scrutiny approaching that of traditional credit ratings, which means the CCC label will carry more formal weight precisely as SpaceX establishes itself in public markets.

What this means for the sector

SpaceX made history with its initial public offering as a record-setting listing that turned Musk into the world’s first trillionaire. But the bond market test will be different. Investment-grade bond investors are, by instinct, the most risk-averse participants in capital markets and the question they will be asking is not whether SpaceX is a compelling growth story, but whether its contracted revenue base is sufficient to service $20 billion in long-term debt while the company continues to burn cash at scale.

Starlink currently accounts for most of SpaceX’s revenue, but most of its addressable market comes from xAI. That asymmetry (cash today from satellite internet, growth tomorrow from AI compute) is what makes the SpaceX financing story so significant for the data centre industry. The company is, in effect, using its connectivity revenues to underwrite one of the most ambitious AI infrastructure buildouts in existence, with Colossus 1 and Colossus 2 in Memphis sitting at the centre of a compute supply chain that now touches Anthropic, Google, and the US Department of Defence.

The immediate takeaway is not whether to buy SpaceX bonds. It is that the AI infrastructure financing cycle has reached a scale and velocity where even the world’s most capital-hungry space company is seeking to refinance $20 billion in under twelve months, ESG rating or not.

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