With 100 percent mission success, Redwire’s ROSA has set the stage for missions on the Moon, Mars, and Beyond
On November 5, 2026, the fourth and final pair of Redwire’s Roll-Out Solar Array wings were successfully deployed on the International Space Station (ISS) by Anil Menon and Joshua Kutryk following spacewalks on October 29 and November 5, 2026. The deployment of the final ROSA wings marks the successful completion of NASA’s International Space Station ROSA program to modernize the power on the ISS to support critical astronautic and research operations.
Each deployed ROSA wing provides 20+ kW of power for over 10 years after installation, and all eight ROSA wings combined will provide more than 160 kW. ROSA’s power is contributing toward extended operation of the orbiting lab to 2030.
ROSA was developed through a contract with Boeing, NASA’s prime contractor for space station operations. The first pair of ROSA wings were deployed in 2021 after installation by NASA astronaut Shane Kimbrough and European Space Agency astronaut Thomas Pesquet.
First demonstrated on the ISS in June 2017, ROSA is a flexible solar array with composite booms that are rolled up. When installed, each ROSA unit unrolls using the inherent stored strain energy in the booms, giving ROSA an advantage over other traditional technologies.
Trusted Power Solutions for the Moon, Mars, and Beyond
Leveraging its initial experience on the ISS, Redwire has continued to advance ROSA technology to provide robust and reliable power to numerous spaceflight platforms and ambitious missions, including NASA’s Double Asteroid Redirection Test, commercial satellites in geostationary orbit, and Axiom Space’s second space station module. Redwire has also built the most powerful ROSA wings in its history to help power the historic SR-1 Freedom Mission to Mars. Through accelerated investment in developing cutting-edge lunar infrastructure, Redwire has developed a Lunar ROSA solution optimized for the lunar surface and powering NASA’s Moon Base, from rovers and habitats to critical science.
In addition to ROSA, Redwire has also developed the Extensible Low-Profile Solar Array (ELSA), a new power solution designed for customers who need to minimize solar array stowed volume and mass, providing more than 50% more power by volume than our traditional solar arrays.
Building on this proven track record of success, ROSA and ELSA are powering a new generation of commercial and national security missions, supporting plans for exploration of the Moon and Mars and paving the way for orbital data centers.
Read more about ROSA and Redwire’s power solutions: Final Pair of Redwire ROSA Wings Launch to the ISS, Completing Historic Power Modernization Effort | Redwire
