Solestial is a U.S.-based solar energy company focused on developing silicon photovoltaic products for space applications. They specialize in producing ultra-thin, flexible silicon solar cells and modules designed to self-cure radiation damage and operate in the harsh conditions of space, particularly in Low Earth Orbit (LEO). Solestial aims to provide lower-cost, durable, and scalable solar energy solutions for the new space economy, targeting satellite constellations, research projects, and future space infrastructure. They partner with organizations like DCUBED and Meyer Burger to develop and manufacture advanced solar arrays.
All verified mentions of this organization in source documents.
Solestial is a Tempe, Arizona-based manufacturer of silicon solar cells engineered for the space environment.
Solestial will continue supplying solar technology to external customers outside York Space Systems’ portfolio.
Solestial will operate as a wholly owned subsidiary of York Space Systems.
York Space Systems paid for Solestial using a negotiated share value of $34.00 per unit and issued more than 1.7 million shares of common stock to Solestial’s sellers.
York Space Systems closed an approximately $67 million cash-and-stock acquisition of Solestial on June 4.
On-orbit telemetry from one year in low Earth orbit showed no additional degradation in Solestial cells compared with adjacent III-V multijunction cells.
Solestial’s solar cells use thin, flexible silicon rather than the III-V multijunction technology that dominates the current market.
The York Space Systems-Solestial transaction closed on June 4, 2026.
York Space Systems paid for Solestial using a negotiated share value of $34.00 per unit and issued 1,703,577 shares of common stock to Solestial’s sellers.
Approximately 95% of Solestial’s supply chain is already U.S.-based.
York Space Systems acquired Solestial, Inc. for approximately $67 million in a mix of cash and stock.
Solestial will operate as a wholly owned subsidiary of York Space Systems.
Solestial will continue supplying solar technology to external customers outside York Space Systems’ spacecraft portfolio.
Solestial manufactures its cells and flexible solar power modules at its Tempe facility on automated production lines that the company says can achieve lower costs than traditional III-V products.
Solestial is a Tempe, Arizona-based manufacturer of silicon solar cells engineered for the space environment.
France’s Alternative Energies and Atomic Energy Commission independently verified Solestial’s claim that its solar cells self-heal radiation damage at operating temperatures as low as 149°F, or 65°C.
Solestial recently expanded its production capabilities by acquiring advanced high-volume solar manufacturing equipment.
York Space Systems has signed a definitive agreement to acquire Solestial, Inc.
Solestial has developed ultrathin, radiation-hardened silicon solar cells and modules for the space environment.
Solestial is the only space solar provider with self-healing silicon technology proven on orbit.