Solestial, a US-based developer of advanced solar power technologies for spacecraft, is highlighting the growing portfolio of solar products engineered specifically for space environments. The company’s solutions are already in operational use and are designed to address the evolving power-generation needs of small satellites, large constellations and next-generation space missions operating primarily in low Earth orbit (LEO). Solestial’s solar cells form the foundation of the space power offerings and are engineered specifically for operation in low Earth orbit (LEO) radiation environments.

Based on silicon technology, these cells are designed to exhibit inherent tolerance to proton radiation without requiring complex or costly radiation-hardening processes. This design approach allows the cells to maintain usable power output over mission lifetimes while supporting scalable manufacturing. The solar cells are intended for direct integration into spacecraft power systems, enabling predictable energy generation for missions such as Earth observation, communications and technology demonstration satellites where consistent electrical performance is essential. The flexible solar power modules extend Solestial’s cell technology into lightweight, thin-profile assemblies suited for spacecraft with limited surface area or non-traditional geometries. These modules integrate solar cells into mechanically flexible formats that can conform to curved or constrained surfaces, making them well suited for CubeSats, deployable structures and small satellite platforms. By reducing mass and eliminating the need for rigid panel structures, the flexible modules allow spacecraft designers to maximize power generation while preserving volume and simplifying mechanical integration, particularly for missions with tight packaging constraints.

Solestial’s integrated solar power modules are designed to reduce system complexity by combining solar cells, structural elements, and electrical interconnections into a single, flight-ready unit. These modules are engineered to interface directly with spacecraft electrical power systems (EPS), minimizing custom wiring and assembly steps during spacecraft integration. This integrated approach helps reduce non-recurring engineering effort, shortens production timelines and supports repeatable manufacturing with key advantages for constellation operators and satellite manufacturers seeking standardized and scalable power solutions.

For missions requiring higher total power output, Solestial offers solar array solutions that build on the radiation-tolerant cell and module technologies. These arrays are designed to provide scalable power generation for larger small satellites and constellation-class spacecraft while remaining compatible with launch mass and volume constraints. The solar arrays support sustained power delivery over extended mission durations, making them suitable for applications such as broadband communications, data relay and high-duty-cycle payload operations. By providing Solestial’s core solar technology, the arrays offer predictable performance and integration flexibility across a range of spacecraft architectures.

Across the solar cells, flexible modules, integrated modules and solar arrays, Solestial emphasizes radiation tolerance, lightweight construction and system-level integration. The portfolio is aligned with the needs of modern space programs that require reliable power generation, rapid deployment and compatibility with standardized satellite buses. Solestial continues to support spacecraft developers and operators seeking efficient, scalable and space-ready solar power solutions for the expanding space economy.

About Solestial

Solestial is a US-based space technology company focused on the development and manufacturing of radiation-tolerant silicon solar cells and solar array solutions for spacecraft operating in challenging orbital environments. Headquartered in Arizona, USA, Solestial provides solar power technologies designed specifically for the needs of small satellites, constellations and cost-constrained space missions. The company’s products are engineered to deliver reliable electrical power in low Earth orbit and other radiation-exposed regimes, with an emphasis on tolerance to proton radiation without the need for traditional radiation-hardening processes. Solestial’s approach enables simpler manufacturing, reduced cost and faster production timelines compared to conventional space solar technologies with maintaining performance levels suitable for operational missions. Solestial’s solar cells and arrays are designed for compatibility with modern smallsat platforms and are intended to support applications such as Earth observation, communications, technology demonstration missions and large constellations requiring scalable and repeatable power solutions.

Click here to learn more about Solestial's Solar Power Technologies and Solutions