Tesla and SpaceX have formed independent board committees to examine a possible merger, although no terms have been agreed and the transaction is far from certain.
Speaking during SpaceX’s earnings call on October 20, Musk backed the idea of combining the companies, citing opportunities in AI software, chip design, robotics, connectivity, and space-based computing.
He also cautioned investors against assuming that a deal was inevitable. Both companies’ committees must evaluate the proposal, and Tesla shareholders would have to approve it.
The potential combination would bring together two businesses with very different origins but increasingly overlapping ambitions.
Both are now investing heavily in AI, autonomous systems, and the computing infrastructure required to support them.
At a combined valuation of approximately USD 3.5 trillion, according to Reuters, the proposed group would rank among the world’s largest companies.
Its significance, however, would extend beyond its size: it could create a vertically integrated technology business spanning transport, energy, communications, computing, and space infrastructure.
Why combine the two companies?
The strongest argument for a merger is that Musk’s companies increasingly need some of the same technologies and infrastructure.
Tesla is trying to expand beyond manufacturing electric cars to include autonomous driving, robotaxis, and Optimus humanoid robots. These ambitions require increasingly powerful AI models, specialised chips, vast computing capacity and reliable communications.
SpaceX, meanwhile, is expanding its Starlink satellite network and developing technologies intended to support more ambitious computing and space projects. Its rockets provide access to orbit, while its satellite infrastructure offers a potential communications layer for connected machines and vehicles.
A merger could allow the companies to coordinate investments, share research and development, consolidate some administrative functions and reduce the need to negotiate projects across separate corporate structures.
There is also a strategic argument. Musk has repeatedly pursued projects that require several technologies to work together. A single corporate structure could make it easier to direct capital, engineers and manufacturing capacity towards common objectives.
But organisational simplicity is not the same as economic value. A merger would need to demonstrate that these benefits exceed the costs of integrating businesses with different customers, operating models, regulatory obligations and investment cycles.
AI could become the common business engine
Artificial intelligence is emerging as the most important link between Tesla and SpaceX.
Tesla’s autonomous-driving ambitions depend on AI systems that can interpret real-world environments and make driving decisions.
Its robotics programme also requires machines capable of recognising objects, navigating workplaces and performing physical tasks.
SpaceX’s expanding AI operations, meanwhile, require computing infrastructure and access to advanced chips.
The Associated Press reported that SpaceX generated USD 14.6 billion in revenue in the third quarter of 2026, up 161% from a year earlier, and earned a profit of USD 4.4 billion.
Its AI business became its largest revenue contributor, although Starlink remained its biggest profit generator.
These figures help explain why a combination is being considered now. SpaceX is no longer simply a rocket manufacturer, while Tesla is seeking to establish itself as more than an electric-vehicle maker.
The companies could share computing resources, chip-design expertise and AI research.
Tesla’s experience in manufacturing at scale could complement SpaceX’s engineering capabilities, while a common technology platform might reduce duplication.
However, AI expertise is not automatically transferrable between businesses.
Autonomous driving, humanoid robotics, satellite operations and large-scale AI computing have different technical requirements.
The commercial benefits would depend on whether shared research produces better products or lower costs than separate development would.
Terafab: The semiconductor connection
One of the clearest examples of potential cooperation is Terafab, the semiconductor and AI-computing project associated with Tesla and SpaceX.
Advanced chips are becoming a strategic bottleneck for companies seeking to develop AI models, autonomous systems and robots. Relying on external suppliers can expose businesses to shortages, pricing pressures, and restrictions on accessing the latest technology.
Terafab is intended to address companies’ growing computing requirements by developing chip-production capabilities for applications, including Tesla’s autonomous vehicles and Optimus robots, as well as SpaceX’s AI and data centre ambitions.
Musk has targeted volume production by late 2028.
A combined company could coordinate chip design, manufacturing investments and demand forecasts across its businesses. It might also have greater leverage when negotiating equipment purchases and securing supplies.
Yet semiconductor manufacturing is exceptionally capital-intensive. Building a facility does not guarantee competitive yields, commercially viable production costs or access to the most advanced manufacturing processes.
Terafab would face substantial execution risks, and its success would depend on technical expertise, equipment, supply chains and sustained investment.
A merger could simplify ownership and funding decisions, but it would not eliminate those challenges.
Starlink, robotaxis and connected machines
SpaceX’s Starlink satellite network could offer another potential advantage.
Satellite connectivity could enhance communications in regions with limited terrestrial networks. For Tesla, such connectivity could be useful for certain fleet-management, remote-monitoring and connected-vehicle applications, particularly in rural or remote locations.
The same infrastructure could eventually serve robots operating in geographically dispersed environments, industrial facilities or areas with limited conventional connectivity. SpaceX’s launch capabilities could also support the deployment of additional satellites as demand grows.
However, satellite internet should not be confused with a replacement for every mobile or vehicle communication requirement.
Reliable, low-latency connections are essential for autonomous systems, but onboard systems must also handle safety-critical driving decisions. Satellite coverage, capacity, spectrum rights and service economics would constrain applications.
The immediate opportunity is therefore more likely to lie in shared infrastructure and specialised connectivity than in a universal satellite-controlled transport network.
A combined group could also bundle selected services for enterprise customers, although it would need to establish whether such offerings generate incremental revenue rather than merely shifting business between its divisions.
Batteries, energy storage and space infrastructure
The merger could create another link between Tesla’s energy business and SpaceX’s growing computing requirements.
AI data centres require substantial electricity, and their power consumption can become a constraint on expansion. Tesla manufactures battery-storage systems that can help manage electricity demand, store energy and support grid stability.
Those capabilities could be relevant to SpaceX’s terrestrial computing facilities and other energy-intensive operations. Shared procurement, engineering and storage technologies might improve project economics.
The longer-term vision is more ambitious. Musk has discussed developing orbital computing infrastructure, potentially using solar energy and the ability to deploy hardware in space. SpaceX would provide the launch capability, while AI operations could supply the computing demand.
But space-based data centres remain a technically and economically challenging proposition. Launch costs, radiation, cooling, maintenance, communications and replacement of failed equipment all need to be considered.
Solar power in orbit does not make computing infrastructure free, and the economics would have to compete with rapidly expanding terrestrial data centres.
The commercial case for combining energy storage and launch infrastructure is more immediate than the prospect of moving large-scale computing into orbit. Investors would need to distinguish existing revenue streams from long-term ambitions.
Robotics and advanced manufacturing
Tesla’s Optimus programme and SpaceX’s manufacturing operations offer another possible source of synergy.
Tesla is developing humanoid robots intended to perform repetitive or physically demanding tasks. SpaceX, meanwhile, must manufacture complex hardware, including rocket engines, vehicles and spacecraft, to demanding engineering standards.
If Tesla’s robotics technology becomes commercially viable, it could eventually help automate certain industrial tasks across the wider group.
SpaceX’s manufacturing environments could also provide practical settings in which to test robotic systems.
The potential benefits would include improved factory productivity, more consistent quality and lower labour requirements for suitable tasks.
Nevertheless, industrial automation is not simply a matter of installing humanoid robots.
Aerospace manufacturing involves strict safety standards, precision engineering and processes that may require specialised machinery rather than general-purpose robots.
The business case would depend on robots outperforming existing methods on cost, reliability and productivity. Until those gains are demonstrated at scale, robotics should be viewed as a potential source of future value rather than a guaranteed merger benefit.
How would investors benefit — and what could go wrong?
For investors, a merger would change the range of businesses they own.
Tesla shareholders would gain exposure to SpaceX’s launch services, Starlink and space-related activities. SpaceX investors would obtain exposure to Tesla’s vehicles, energy storage, autonomous-driving ambitions and robotics programme.
The combination could spread some risks across a wider set of businesses and provide access to additional sources of revenue. It could also make it easier to fund projects that benefit more than one division.
However, diversification within a corporate group does not necessarily reduce investment risk. The combined company may face increased exposure to capital-intensive projects, regulatory uncertainty, and the risk of multiple ambitious programmes failing to meet their targets simultaneously.
SpaceX’s spending requirements are a particular consideration.
The Associated Press reported that capital expenditure reached USD 19.6 billion in the third quarter, nearly three times the level a year earlier, with the company forecasting spending of USD 35 billion to USD 40 billion in the following quarter.
A merger might improve access to capital, but it could also expose Tesla shareholders to SpaceX’s funding requirements and long-term projects.
The reverse is true for SpaceX investors who might prefer to avoid the competitive pressures and investment needs of the electric-vehicle market.
Valuation would be central. The exchange ratio would determine how much of the combined company each shareholder receives.
If one business is valued too generously relative to the other, the transaction could transfer value between shareholder groups rather than create it.
Investors would need detailed financial disclosures, realistic synergy estimates and a clear explanation of how future capital spending would be allocated.
Governance could be the biggest obstacle
The merger would also raise questions about corporate governance because Musk leads both businesses and has substantial financial interests in them.
Reuters reported that Musk holds about 85% of SpaceX’s voting power through super-voting shares, compared with roughly 20% at Tesla.
Illustrative calculations by analysts suggest that a combined company could give him voting control of around 57% to 58%, depending on the transaction’s terms. No exchange ratio has been agreed.
This makes the independence of the two special committees particularly important.
They must assess whether the proposed terms are fair to their respective shareholders, rather than simply serving the interests of the companies’ shared chief executive.
Tesla investors would also need to consider whether the merger improves the company’s prospects enough to justify sharing ownership with SpaceX’s businesses.
They may conclude that collaboration through commercial agreements would deliver many of the same benefits without combining the companies.
Regulatory scrutiny, disclosure requirements and potential litigation could add complexity. The transaction would need to withstand examination of its valuation, decision-making process and treatment of minority shareholders.
What happens next?
The immediate question is not whether the combined business could support an ambitious technological vision, but whether the proposed merger can be structured on terms acceptable to shareholders.
Musk has publicly supported the idea, and the formation of independent committees means that the proposal is undergoing a more formal examination.
Nevertheless, he has acknowledged that an agreement is not certain, and the committees have yet to settle the terms.
If the transaction proceeds, investors will need to examine the exchange ratio, governance arrangements, financing plans, capital-spending commitments and the treatment of each business’s existing shareholders.
They will also need to distinguish the value of established operations, such as vehicle sales and satellite services, from more speculative ambitions involving robotics and orbital computing.
The potential reward is a company with an unusually broad technological reach: vehicles and robots on the ground, satellites in orbit, rockets providing access to space, and AI systems linking parts of the business together.
The risk is that such breadth could become a source of complexity rather than competitive advantage.
A corporate structure that makes it easier to pursue multiple ambitions could also make it harder for investors to assess performance, hold management accountable and determine which projects deserve capital.
A SpaceX-Tesla merger would therefore be more than a combination of a carmaker and a rocket company. It would be a test of whether a single corporate group can successfully integrate transport, energy, AI, robotics and space infrastructure — and whether the financial returns justify the scale of that ambition.