Aetherflux, a space-based solar power startup, is reportedly in the process of raising a significant new funding round that would value the company at approximately $2 billion, according to sources familiar with the matter.
The round, which is said to be led by Index Ventures, is expected to bring in between $250 million and $350 million for the company, as first reported by TechCrunch. The fundraise would represent a major milestone for Aetherflux as it looks to advance its ambitious technology and scale its operations.
Space-based solar power has long been considered one of the more compelling yet technically challenging frontiers in clean energy. The concept involves collecting solar energy in orbit, where sunlight is available around the clock without atmospheric interference, and transmitting that power back to Earth via wireless beams.
Index Ventures, a prominent venture capital firm with offices in London and San Francisco, has built a reputation for backing transformative technology companies at pivotal stages of their growth. Its reported involvement in this round signals continued strong investor appetite for deep tech and space-related ventures, even as broader funding markets have remained selective.
If completed at the reported valuation, the Series B would place Aetherflux among a growing cohort of well-capitalized space technology companies attracting substantial private investment. The space industry has seen a wave of funding activity in recent years, driven by falling launch costs and increasing confidence in the commercial viability of space-based applications.
The funding, if secured, would likely be used to accelerate development of Aetherflux's core technology and bring the company closer to demonstrating the feasibility of its solar power transmission systems at scale. Neither Aetherflux nor Index Ventures had publicly confirmed the details of the reported round at the time of publication.
