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K2 Space Raises $250 Million at $3 Billion Valuation to Scale High-Power Satellites

The company pitches large multi‑orbit platforms with 20‑kilowatt power to enable more capable commercial and defense missions.

Overview

  • The Series C was led by Redpoint with participation from T. Rowe Price, Altimeter, Lightspeed, Hedosophia and Alpine Space Ventures.
  • Gravitas, the first Mega Class demonstrator, is scheduled to launch on a Falcon 9 in March 2026 to test a 20 kilowatt Hall‑effect thruster, twin 10 kilowatt solar arrays, high‑voltage power and radiation‑tolerant avionics.
  • K2 reports about $500 million in 2025 contracts, roughly 60% from commercial customers including SES and 40% from U.S. government work.
  • The Torrance, California factory is sized to produce about 100 high‑power satellites per year, with most core subsystems developed in‑house.
  • The roadmap includes a larger Giga platform targeting roughly 100 kilowatts for future heavy‑lift rockets such as Starship and New Glenn.