Rocket Lab USA Inc.Rocket Lab announces production release of its new IMM Apex solar cell, a next-gen product with higher efficiency and lighter weight.

Rocket Lab Corporation has announced the production release of its Inverted Metamorphic (IMM) Apex solar cell, a next-generation product designed to reduce reliance on supply-constrained critical minerals. The new cell achieves a Beginning of Life conversion efficiency of 31.5% and is 40% lighter than conventional cells, offering best-in-class specific power while maintaining radiation hardness. Unlike traditional multi-junction cells, IMM Apex eliminates the use of germanium substrates, mitigating rising costs and supply chain issues. It is a drop-in replacement for existing germanium-based cells, allowing customers to integrate it without retooling. The technology builds on Rocket Lab's proven IMM cells, which powered NASA's Ingenuity Mars Helicopter and have been used in space for over a decade. The company says optimized manufacturing enables efficient production in multi-100-kilowatt volumes to meet growing demand.
Rocket Lab USA Inc.Rocket Lab announces production release of its new IMM Apex solar cell, a next-gen product with higher efficiency and lighter weight.