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Rocket Lab developing space-optimized silicon solar arrays for gigawatt-class power generation, positioning for space-based data center and constellation markets
Peter Beck· Rocket Lab· Space· 2026-02-27· about Rocket Lab (RKLB)
“I'm proud to announce that Rocket Lab is introducing a space-optimized silicon solar arrays... By harnessing silicon, we're able to deliver a really low cost per watt at industrial scale, enabling gigawatt class power generation in space at kilometer-sized scale using mass-manufacturable light weight and modular systems... We've also taken the additional step of developing a hybrid solar array solution that incorporates both high-efficiency cells and silicon cells.”
Why it matters
Silicon solar arrays at industrial scale could disrupt traditional high-efficiency cell manufacturers if cost/performance targets are met. The hybrid approach signals Rocket Lab expects different mission profiles will demand different power solutions.
Investment implication
Manufacturers of high-efficiency space solar cells (Spectrolab, SolAero, Emcore) may face volume pressure from silicon alternatives for large constellations and data center applications. Suppliers of solar cell materials, substrates, and assembly equipment should monitor Rocket Lab's manufacturing roadmap. Companies developing thermal management systems for space-based data centers are well-positioned if this market materializes.