Rocket Lab launches germanium-free solar cell for space applications

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Go back to Rocket Lab launches germanium-free solar cell for space applications

Rocket Lab Introduces High-Efficiency Solar Cell to Reduce Reliance on Supply-Constrained Critical Minerals

September 8, 2026 4:20 PM EDT

LONG BEACH, Calif., Sept. 08, 2026 (GLOBE NEWSWIRE) -- Rocket Lab Corporation (Nasdaq: RKLB), a global leader in launch services and space systems, today announced the production release of Inverted Metamorphic (IMM) Apex, the latest iteration of its next-generation solar cell designed to deliver exceptional efficiency and reliability for space applications. IMM Apex boasts a Beginning of Life solar conversion efficiency of 31.5% and 40% lower cell mass, giving it best-in-class specific power (watts per kilogram) while maintaining excellent radiation hardness and performance over temperature.

IMM Apex is free of the germanium substrates used for conventional,... More