K2 Space has raised $500 million in Series D funding, achieving a $6.8 billion valuation. The startup is developing orbital data centers, with plans to launch satellites capable of 100 kilowatts of power by 2028.
TL;DR
- K2 Space raises $500M Series D at $6.8B valuation to build orbital data centers.
- The startup's technology could reduce satellite costs to $15M per unit with lead times under three months.
- K2's success reflects a broader trend of record $20.3B investment in space startups in 2026.
What happened
K2 Space closed a $500 million Series D funding round on July 30, 2026, reaching a $6.8 billion valuation. The round was co-led by Kleiner Perkins and ICONIQ, with participation from notable investors including CapitalG (Alphabet's venture arm), Lightspeed, and ARK Invest.
The funding comes four months after K2's Gravitas satellite demonstrated a 20-kilowatt Hall-effect thruster in low Earth orbit, a significant advancement in satellite propulsion technology. This thruster enables satellites to raise their own orbits and carry more payload, reducing launch costs.
K2 Space has secured over $1 billion in signed contracts, including deals with SES for its meoSphere satellites and Anduril for its Golden Dome interceptor program. The startup is also supplying satellite buses for the Space Force's Protected Tactical Satcom-Global program.
Why it matters
K2 Space's technology could disrupt the satellite industry by reducing costs and lead times. The company aims to produce Mega-class satellite buses at under $15 million per unit, compared to the traditional $100 million and multiple years for similarly capable satellites.
The startup's success is part of a broader trend of increased investment in space startups. Global private startup investment in space and satellite companies reached a record $20.3 billion in 2026, according to Crunchbase. This surge is driven by the potential of orbital data centers and the growing space economy.
For developers and startups, K2 Space's technology could enable new applications in AI inference and data processing from space. For investors, the record funding rounds and valuations in the space sector present significant opportunities, as well as risks related to the ability of startups to scale production and meet customer demands.
Key facts
- K2 Space raised $500 million in Series D funding at a $6.8 billion valuation.
- The startup's Gravitas satellite demonstrated a 20-kilowatt Hall-effect thruster in low Earth orbit.
- K2 aims to produce satellite buses at under $15 million per unit with lead times under three months.
- The company has secured over $1 billion in signed contracts, including deals with SES and Anduril.
- Global private startup investment in space and satellite companies reached $20.3 billion in 2026.
- SpaceX, Google, and at least six other companies are also developing orbital compute hardware.
- K2 Space plans to launch satellites capable of 100 kilowatts of power by 2028.
- The startup's technology could enable new applications in AI inference and data processing from space.
Context
The space economy is entering a new era, with capital flowing at unprecedented scale. The global space economy is projected to reach $1.8 trillion by 2035, up from approximately $626 billion in 2025, according to the Goldman Sachs Global Institute.
Orbital data centers are emerging as a new investment focus, with companies like SpaceX, Google, and K2 Space developing hardware to run AI inference workloads from space. This shift is driven by the potential to reduce costs and improve performance compared to terrestrial data centers.
The record investment in space startups reflects the growing recognition of the potential of the space economy. However, startups must demonstrate their ability to scale production and meet customer demands to realize this potential.
