Space Inventor is advancing satellite mission capabilities through a portfolio of modular satellite platforms designed to support commercial, governmental, scientific and defense applications. Headquartered in Aalborg, Denmark, the company has established itself as a satellite systems integrator by developing flight-proven spacecraft platforms that combine modular engineering, scalable architectures and in-house subsystems. The product portfolio, centered around the BIG CAT family of satellites and complemented by a range of CubeSat platforms, enables satellite missions across multiple payload classes and operational requirements. Space Inventor addresses the evolving requirements through a standardized platform approach that enables mission customization while providing flight-proven technologies developed and manufactured in-house.
Space Inventor has developed a portfolio of satellite platforms intended to simplify spacecraft development while providing customers with adaptable architectures suitable for a broad spectrum of missions. The company utilizes modular platform architectures that can be configured according to specific payloads, mission objectives and customer requirements. This approach reduces engineering complexity while allowing satellite developers to maintain flexibility across different applications. The satellite platforms support missions including Earth observation, communications, technology demonstration, scientific research, environmental monitoring, defense and other commercial space applications where reliable and customizable spacecraft infrastructure is required. By combining standardized engineering with configurable mission architectures, Space Inventor enables satellite programs to move efficiently from design to deployment while maintaining compatibility with a wide variety of payload technologies. A defining characteristic of Space Inventor’s satellite portfolio is the use of flight-proven, in-house developed modules throughout the spacecraft designs. The company’s engineering philosophy centers on building satellites using internally developed subsystems that have accumulated operational heritage through previous missions. This approach allows proven avionics, power systems, communications equipment, attitude determination and control technologies, onboard computing and structural components to be incorporated across multiple spacecraft platforms. Reusing validated subsystem designs contributes to greater system consistency while reducing development risk for future satellite missions. The common architecture also streamlines manufacturing, testing, integration and long-term support across the company’s expanding spacecraft portfolio.
The core of Space Inventor’s spacecraft portfolio is the BIG CAT family of modular satellite platforms. Designed to accommodate different payload capacities and launch configurations, the BIG CAT series provides scalable solutions that support missions ranging from compact scientific payloads to larger commercial and institutional spacecraft. Each platform is built around the same modular engineering philosophy while addressing different spacecraft mass classes and payload integration requirements. The family currently includes BIG CAT 100, BIG CAT 300, and BIG CAT 600, providing customers with multiple platform options depending on mission size, payload complexity and operational objectives. The BIG CAT 100 represents the most compact platform within the BIG CAT family and is engineered to support agile satellite missions requiring flexibility and rapid development. Built using Space Inventor’s in-house modular equipment, the platform incorporates a quarter-plate payload adapter, allowing customers to integrate mission-specific payloads while benefiting from a standardized spacecraft architecture. The modular design enables efficient customization for different operational scenarios without requiring extensive redesign of the satellite bus. The platform is intended for organizations seeking a flexible spacecraft foundation capable of supporting evolving mission requirements while maintaining high engineering quality and integration efficiency. By combining compact dimensions with configurable subsystems, BIG CAT 100 provides a practical solution for a broad range of small satellite missions. For missions requiring larger payload capacity, Space Inventor offers the BIG CAT 300, an ESPA-class satellite platform designed around a half-plate payload adapter. Constructed using the same flight-proven in-house modules employed throughout the BIG CAT family, the platform provides a versatile architecture capable of supporting a diverse range of commercial and institutional missions. The ESPA-class configuration enables integration with launch opportunities that utilize standardized secondary payload interfaces while offering increased spacecraft capability compared with smaller platforms. BIG CAT 300 is designed to accommodate different payload configurations efficiently, allowing customers to tailor spacecraft systems according to mission-specific objectives while benefiting from an established engineering foundation. The adaptable architecture supports rapid mission implementation without sacrificing spacecraft performance or reliability.
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The largest member of the platform family is the BIG CAT 600, developed as an ESPA Grande-class satellite utilizing a full-plate payload adapter. Designed to support larger payloads and more demanding operational requirements, BIG CAT 600 provides a highly configurable spacecraft foundation suitable for missions requiring greater onboard resources. Like the smaller platforms, BIG CAT 600 is assembled using Space Inventor’s flight-proven modular subsystems, ensuring architectural consistency across the product family while enabling expanded mission capability. The larger platform supports customers whose applications require increased payload accommodation, greater power availability, additional subsystem capacity or more complex mission configurations. The modular engineering philosophy enables spacecraft to be customized according to customer specifications while maintaining compatibility with standardized manufacturing and integration processes. A key advantage shared across the BIG CAT family is the use of modular subsystem architecture. Space Inventor develops and manufactures critical spacecraft equipment internally, allowing engineering teams to integrate standardized modules efficiently into different satellite configurations. This modular approach reduces development timelines by minimizing the need to redesign common spacecraft functions for each new mission. Instead, mission-specific effort can be concentrated on payload integration and application-specific engineering while the underlying spacecraft architecture remains based on proven subsystem designs. The result is greater flexibility during spacecraft development together with improved manufacturing consistency and system reliability. Complementing the BIG CAT family is Space Inventor’s portfolio of CubeSat platforms, designed to provide many of the same engineering principles in smaller spacecraft formats. The company’s CubeSat offerings range from 6U to 16U configurations and are intended to support customers requiring compact satellite solutions for scientific, commercial, educational and technology demonstration missions. Despite their reduced size, these CubeSat platforms are built using the same industrial-grade design philosophy applied throughout the BIG CAT product line. By incorporating proven engineering practices into standardized CubeSat architectures, Space Inventor enables organizations to access reliable satellite infrastructure suitable for a variety of operational objectives while maintaining compatibility with modern launch opportunities.
Space Inventor’s satellite platforms are designed to accommodate a broad spectrum of mission profiles across multiple sectors of the space industry. Potential applications include Earth observation, environmental monitoring, telecommunications, technology validation, scientific research, defense, space situational awareness and institutional space programs. The flexibility of the BIG CAT platforms allows customers to configure payload accommodations according to mission requirements while leveraging common spacecraft technologies that have already demonstrated operational capability. This versatility enables organizations to develop satellites designed to individual mission objectives without requiring entirely new spacecraft architectures for every project. Space Inventor addresses the challenge through a scalable product portfolio that spans CubeSats, ESPA-class satellites and ESPA Grande-class platforms while maintaining a consistent modular engineering approach. By utilizing flight-proven in-house modules, standardized payload interfaces and configurable spacecraft architectures, the company enables satellite programs to adapt to changing mission requirements while supporting efficient manufacturing and integration processes. Space Inventor provides modular spacecraft solutions that enable customers to tailor missions while benefiting from standardized engineering and flight-proven subsystem technologies. By integrating in-house developed modules with scalable platform architectures, the company continues to support the evolving needs of satellite operators seeking efficient, customizable and high-quality spacecraft for space missions.
About Space Inventor
Space Inventor is a satellite manufacturer and systems integrator headquartered in Aalborg, Denmark, specializing in the design, development and production of modular satellite platforms and space systems. The company develops flight-proven spacecraft ranging from 6U to 16U CubeSats to the BIG CAT family of ESPA-class satellite platforms, supporting commercial, governmental, defense and scientific missions. By providing in-house developed subsystems and a modular engineering approach, Space Inventor delivers customizable satellite solutions tailored to a wide range of mission requirements. The integrated capabilities in satellite design, manufacturing, assembly, integration and testing enable the company to provide scalable, high-quality spacecraft for Earth observation, communications, technology demonstration and other space applications.
