ESA and Vast Define the Services Behind a Commercial Space Station Market

ESA and Vast signed a memorandum of understanding on 5 October to explore further cooperation in low Earth orbit after International Space Station operations end. The agreement runs for an initial three years and starts with a joint feasibility study intended to produce a roadmap and indicative timetable for possible binding agreements.

The detail matters because it identifies services around which a commercial station business could be built. ESA describes potential research campaigns, facilities for scientific work, crew time and cargo capacity in both directions. Each has a different effect on capacity, delivery costs and the service a customer can buy.

Source: ESA and Vast cooperation announcement, 5 October 2026.

The Customer Buys a Research Service

The agreement also provides for examining possible European cargo and crew vehicles serving Vast's Haven station. It replaces the parties' 2024 memorandum and broadens their cooperation. The announcement describes future options; it does not award a new post-ISS services contract or establish prices and committed volumes for those services.

A useful commercial unit is a defined research campaign: the equipment sent to orbit, the facilities used, the crew time required and the material or data returned. Describing demand at this level connects a customer's purpose to resources the operator must provide.

Crew time is a good example. Two experiments could occupy similar physical space while requiring different levels of astronaut involvement. Pricing both solely by payload size would miss a resource that affects the delivery cost. A service specification needs to identify those requirements before the operator can estimate the cost of fulfilling it.

Cargo Capacity Is Part of the Offering

Transport determines whether a proposed service can be delivered on the customer's timetable. In an illustrative research campaign, an experiment might require equipment to arrive before a particular period of crew availability, followed by sample return for analysis on Earth. The commercial package would have to accommodate that sequence.

This creates dependencies across organisations. The station operator, transport provider and research customer need compatible schedules and clear responsibility when a stage is delayed. A facility reservation does not by itself establish that launch capacity, crew support and return transport will all be available when required.

For a supplier, these interfaces define a more specific market than a broad forecast for the space economy. Payload preparation, experiment operations, communications and ground support each address a particular part of delivery. Their commercial prospects depend on who purchases the service, how often it is needed and what it costs to support successive missions.

Feasibility Work Defines Demand Before It Becomes Revenue

The feasibility study can help translate an expression of interest into a specification that both parties can price and evaluate. The distinction is material for financing: potential utilisation and a contracted service commitment provide different levels of support for a revenue forecast.

A funding model can make that difference explicit by separating exploratory demand, services under technical assessment and binding commitments. It can then show which spending decisions rely on a future customer agreement and how delays would affect the schedule and cash requirement.

The same discipline applies to capacity planning. A station business needs a view of which resources customers would consume together. Research space, crew time and transport are separate constraints; an available slot in one does not establish availability across all three.

A Market Built Around Deliverable Services

ESA and Vast's agreement gives suppliers a more specific view of what a post-ISS customer may need to buy. Research facilities, crew time and transport each create a potential service requirement, but their value to the customer depends on being available together. A supplier's opportunity is to make a defined part of that package reliable and economical to deliver.

The next commercial milestone would be translating those requirements into agreements that specify capacity, responsibilities and payment. As that happens, station developers and their suppliers would gain a firmer basis for planning investment. A market takes shape when a research organisation can move from wanting access to orbit to purchasing a service with a clear scope, price and delivery commitment.