Flexell Space Partners with Satoro for In-Orbit Demonstration of Next-Generation Space Solar Cells Aboard SpaceX Falcon 9

UIWANG-SI, South Korea — In a strategic move poised to accelerate the commercialization of advanced space power systems, South Korean space energy pioneer Flexell Space has announced a formal agreement with Singapore-based CubeSat specialist Satoro. The partnership will facilitate two critical in-orbit demonstration and validation (IOD/IOV) missions scheduled for 2027 and 2028. Both missions will utilize SpaceX Falcon 9 rockets as their primary launch vehicles, marking a significant milestone in the global deployment of lightweight, cost-effective photovoltaic solutions for low Earth orbit (LEO) and beyond.

Under the terms of the agreement, Satoro will leverage its comprehensive Satellite-as-a-service model to design, manufacture, and integrate the demonstration satellites. Meanwhile, Flexell Space will supply the specialized solar cells and advanced test modules required to evaluate power generation capabilities under authentic orbital conditions. The collaboration bridges South Korea’s burgeoning space manufacturing sector with Singapore’s robust agile satellite infrastructure, creating a streamlined pathway from laboratory development to commercial orbital deployment.

Building on Previous Flight Heritage

The upcoming 2027 and 2028 missions represent the logical continuation of Flexell Space’s aggressive flight-testing roadmap. The company has already established a strong foundation in space heritage through two prior demonstration missions launched aboard South Korea’s homegrown KSLV-II (Nuri) rocket in November 2025 and October 2026.

While domestic launch vehicles provided crucial initial validation, securing rides aboard SpaceX’s reliable and high-frequency Falcon 9 launch system allows Flexell Space to scale its testing protocols. These upcoming flights will expose the company’s next-generation photovoltaic technology to broader orbital trajectories and longer operational lifespans, accumulating the extensive empirical data required by major satellite manufacturers and international space agencies.

Technological Focus: CIGS and Perovskites

At the core of the Flexell Space initiative is the development of cutting-edge photovoltaic technologies based on copper indium gallium selenide (CIGS) and perovskite materials. Traditional space solar cells—typically rigid, heavy, and expensive gallium arsenide (GaAs) or silicon wafers—have long represented a significant portion of a satellite’s total mass and manufacturing cost.

Flexell Space aims to disrupt this paradigm by engineering low-cost, large-area, and ultralightweight power solutions. These flexible and thin-film solar architectures are designed to offer high power-to-weight ratios, exceptional durability, and resistance to harsh space environments, including ionizing radiation and thermal cycling. Successfully proving these materials in orbit is expected to drastically lower the financial barrier to entry for mega-constellations, Earth observation networks, and deep-space infrastructure projects.

Mission Chronology and Operational Execution

The two-year campaign will systematically test the physical and electrical resilience of Flexell Space’s modules.

The 2027 mission will serve as the primary validation flight for early-stage refinements of the CIGS and perovskite test modules, focusing on initial power output, deployment reliability, and baseline degradation metrics under cosmic radiation.

The subsequent 2028 mission will incorporate design iterations derived from the 2027 flight data, testing advanced large-area configurations and long-term performance stability.

Satoro’s engineering teams will oversee the integration of these payloads onto standardized CubeSat platforms. Engineers from both companies will collaboratively monitor telemetry, comparing real-world orbital performance against comprehensive ground-based simulation data. This rigorous feedback loop will allow researchers to refine manufacturing tolerances and optimize power management systems long before mass production begins.

Leadership Perspectives on the Collaboration

Industry leaders from both organizations have emphasized the mutual benefits of the agreement, highlighting how complementary skill sets will drive the initiative forward.

"Commercializing space solar cells requires both ground-based performance validation and data collected in orbit," stated Taehun Ahn, CEO of Flexell Space. "With two demonstration opportunities secured for 2027 and 2028, we will systematically verify the performance and reliability of our next-generation solar cells and build the technical evidence required by global customers. Our collaboration with Satoro establishes a clear path from development to in-orbit demonstration and will accelerate our preparations for future commercial supply."

Mark Lu, CEO of Satoro, echoed these sentiments, emphasizing his company’s operational track record. "We are pleased to work with Flexell Space on the demonstration of its next-generation space solar cells. Drawing on Satoro’s CubeSat platforms and mission integration capabilities, we will work closely with Flexell Space to help secure the in-orbit data needed to validate its technology," Lu remarked. "We look forward to these two demonstration missions advancing the commercial potential of new space power technologies and laying the groundwork for continued technical collaboration between our companies."

Corporate Backgrounds and Market Context

Flexell Space originated as an internal corporate venture within Hanwha Systems, one of South Korea’s leading defense and aerospace conglomerates, before spinning out to focus exclusively on advanced energy architectures. The company’s research and development initiatives are explicitly tailored to meet the rigorous demands of modern space missions, where longevity, thermal stability, and radiation tolerance are paramount.

Satoro, headquartered in Singapore, operates as a premier Satellite-as-a-service provider. Specializing in end-to-end mission delivery, the company covers everything from satellite manufacturing and payload integration to launch coordination and in-orbit operations. Since entering the commercial market in 2021, Satoro has maintained a flawless operational record, successfully deploying 11 satellites across eight distinct orbital launches without a single failure.

Broader Implications for the Global Space Economy

The partnership between Flexell Space and Satoro underscores a wider transformation within the global aerospace industry. As the commercial space economy expands—driven by the rapid deployment of LEO communication constellations, remote sensing networks, and in-orbit manufacturing facilities—the demand for scalable, affordable, and high-efficiency power systems has never been higher.

Conventional solar cell manufacturing pipelines are often constrained by high material costs, complex supply chains, and lengthy production cycles. By pioneering flexible, large-area alternatives like CIGS and perovskites, companies such as Flexell Space hope to democratize access to space power. If the 2027 and 2028 Falcon 9 demonstration missions yield the expected results, the aerospace sector could witness a paradigm shift, enabling lighter satellites, reduced launch mass, and significantly lower capital expenditures for commercial operators worldwide.