Commercial Orbital Stations: How the Private Sector is Preparing to Replace the ISS by 2031

Author: Tatyana Hurynovich

Commercial Orbital Stations: How the Private Sector is Preparing to Replace the ISS by 2031-1

The private sector is transitioning from concepts to functional commercial orbital stations just as the International Space Station (ISS) nears the end of its operational life. NASA is supporting this shift of low Earth orbit (LEO) activities to private operators to free up resources for deep-space missions, providing hundreds of millions of dollars to various companies through specialized programs. However, different market participants rely on distinct funding sources and models, making it critical to distinguish government grants from private capital investment.

Vast Space is currently developing the Haven-1 project.

While earlier public announcements suggested a mid-2026 launch, the company has officially pushed the date to the first quarter of 2027. Haven-1 is a compact four-person module designed for short-term missions of up to 10 days, with a focus on space tourism and applied experimentation, including botanical research and pharmaceutical testing. It is important to note that Haven-1 is primarily financed through private capital. Vast secured a major investment round from a venture capital consortium led by Balerion Space Ventures, with these private infusions estimated in the hundreds of millions of dollars. As of 2026, Haven-1 has not received direct grants from NASA under its commercial station programs.

NASA is aggressively backing the creation of commercial LEO destinations to outsource routine orbital operations and concentrate on missions to the Moon and beyond.

  • In December 2021, under the first phase of the Commercial LEO Destinations (CLD) program, NASA allocated approximately $415.6 million to three contractors: Blue Origin, Voyager Space (as part of a consortium), and Northrop Grumman. Axiom Space was not included in this specific funding group.
  • Axiom Space secured separate contracts under the NextSTEP-2 program (Appendix I), receiving initial payments of up to $140 million for the first phase, with a potential contract value reaching $228 million.
  • Subsequent reallocations and additional funding within these programs saw a portion of Northrop Grumman’s funds redistributed to other participants, bringing total government support for commercial LEO initiatives to over $550 million across various contracts and stages.

Major Modular Stations: Axiom, Starlab, and Orbital Reef

Alongside compact modules, large-scale projects are being developed to serve as long-term orbital infrastructure:

  • Axiom Space intends to deploy a multi-module station, positioning it as a hub for scientific research, commercial ventures, and private client services.
  • Voyager Space and its partners are promoting Starlab as a research and commercial platform, having participated in the first phase of the CLD program.
  • Blue Origin, in collaboration with its partners, is developing Orbital Reef, which is designed for versatile use ranging from science and tourism to industrial manufacturing.

Economics: Current Pricing and Market Transformation

Initial flights to commercial stations will be expensive, with the cost of a single seat or mission reaching tens of millions of dollars. The primary early customers will include wealthy tourists, corporate laboratories, and government agencies. Transitioning to a broader commercial model will require cost reductions driven by module standardization, competition among operators, and increased flight frequency. These projects will become commercially viable by combining several revenue streams: paid tourism, long-term agency contracts, industrial and pharmaceutical R&D, laboratory leasing, and logistics services.

Risks: Technical, Financial, and Regulatory Challenges

Despite the prevailing optimism, the industry faces significant hurdles:

  • ensuring crew safety and the reliability of life-support systems during long-term operations;
  • financial stability: models relying exclusively on private capital risk failure if demand drops, while projects with government support depend on political will and budget priorities;
  • the legal and regulatory landscape: flight licensing, international treaties, liability for damages, and space security;
  • technological risks and the synchronization of launch schedules: delays from individual operators could create an infrastructure deficit during the transition period following the retirement of the ISS.

A Vital Milestone: 2031

The ISS is slated for decommissioning by 2031. To maintain human access and scientific platforms in LEO, commercial stations must prove their reliability and safety before this date or ensure a seamless transition. Short-term projects serve as testbeds and technology demonstrators, while large modular stations aim to replace the ISS as primary scientific and service hubs.

Future Outlook: New Markets and Public Impact

The successful commercialization of orbital stations will unlock new markets, including biomedical testing in microgravity, the manufacturing of unique materials, educational programs, space tourism, and long-term laboratory leasing. This evolution will require transparent regulations, mixed-funding structures, and competition capable of driving down the cost of space access. If successful, commercial stations will not only take over functions of the ISS but also serve as a platform to accelerate scientific discovery and the expansion of the space economy.

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