Space Based Solar Power Startup Aetherflux Eyes $2 Billion Valuation with a Bold Series B Push
Aetherflux, the space solar power startup founded by Robinhood co-founder Baiju Bhatt, is in talks to raise between $250 million and $350 million for a Series B round that would value the company at $2 billion. This is a striking figure for a startup that has raised just $60 million in total to date. And yet, the investors circling this deal are among the most sophisticated in Silicon Valley — which tells you everything about where the market for space based solar power is heading. The proposed valuation represents a thirty-plus-times markup in company worth in under two years of operations, driven by a potent combination of military demand, AI energy constraints, and genuinely novel technology. This isn’t hype. This is a fundamental market shift.
From $60 Million to $2 Billion: How Commercial Space Infrastructure Funding Reached Escape Velocity
Bhatt stepped down from his role at Robinhood in March 2024 to build what would become Aetherflux, personally committing $10 million of his own capital to the company from the start. That initial conviction attracted serious partners. In April 2025, Bloomberg reported that Aetherflux had raised $50 million in Series A funding, co-led by Index Ventures and Interlagos, a venture capital firm created by former SpaceX leadership. Additional investment came from Breakthrough Energy Ventures, Andreessen Horowitz, New Enterprise Associates, Robinhood co-founder Vlad Tenev, and actor Jared Leto, among others. The company has raised $60 million to date.
Now, the proposed Series B would rocket Aetherflux into unicorn territory before it delivers a single commercial kilowatt from orbit. Three forces are driving such aggressive commercial space infrastructure funding right now: the team, the timing, and the technology. Bhatt assembled a team of engineers and researchers from NASA, SpaceX, Lockheed Martin, Anduril, and the U.S. Navy — a pedigree that inspires deep-tech investor confidence. On timing, launch costs have collapsed, satellite hardware has matured, and the global demand for renewable energy from space has escalated from curiosity to competitive urgency. This is the window the market has been waiting for.
The Technology Behind Space Based Solar Power: Laser Beamed Energy Satellites in a New Era
Old-school space based solar power concepts, first explored seriously in the 1970s, required massive, billion-dollar structures parked in geostationary orbit, beaming energy back to Earth through radio waves. Aetherflux’s approach differs fundamentally, calling for transmission via infrared lasers instead of microwaves. That shift isn’t cosmetic — it transforms the economics and deployment footprint of the entire system.
The technology works by collecting solar energy in space — where sunlight is available 24/7 and roughly eight times more intense than on Earth’s surface — then wirelessly transmitting it through infrared laser beams to small ground stations. The wireless power transmission technology is elegant in its mechanics: solar panels capture light continuously in orbit, the payload converts that energy into a precision infrared laser beam, and that beam fires down to photovoltaic arrays on the ground. The payload delivers as much as one kilowatt of energy per satellite, received by ground stations made up of photovoltaic arrays that convert the light into electricity stored in batteries for later use.
In the future, the goal is to build small, portable ground stations — anywhere from five to ten meters in diameter — to bring electricity to even the most remote locations. Deploying a traditional utility connection can take years. Positioning one of these portable units takes hours. That’s the core commercial edge.
The laser beamed energy satellites Aetherflux is developing also differ from past concepts in their orbit and number. Aetherflux wants to build a massive constellation of satellites in low Earth orbit, each equipped with a solar array, a battery, and a near-optical infrared laser. While the satellites won’t be constantly exposed to the sun due to their altitude, the startup wants to put up thousands of these spacecraft to accumulate massive amounts of energy.
Building the Low Earth Orbit Power Grid, Satellite by Satellite
No single satellite transforms energy infrastructure on its own. The strategic genius of the architecture is its scalability. The company plans to launch approximately 30 satellites at a time on SpaceX Falcon 9 rockets. Thousands of these spacecraft — each serving as a relay node — will eventually form a low earth orbit power grid capable of providing continuous renewable energy from space to ground stations across the globe. As each satellite keeps moving around the Earth, it finds another ground station and continues projecting power there, maintaining an uninterrupted supply.
For the planned 2026 demonstration launch, the startup has purchased a satellite bus from LA-based Apex Space and booked a rideshare on a SpaceX Falcon 9 rocket. The mission goal is to prove end-to-end power transmission from orbit to a functional device on the ground — something humanity has never achieved at commercial scale. The only previous comparable achievement was in 2023, when researchers at Caltech’s Space Solar Power Project demonstrated wireless power transfer from low Earth orbit using microwave beaming — which proved the concept but falls short of Aetherflux’s pitch for a scalable, commercial system.
Galactic Brain: Where Orbital Data Center Infrastructure Meets AI’s Energy Crisis
December 2025 brought Aetherflux’s boldest announcement yet. The company announced a Q1 2027 target for its first orbital data center satellite, which leverages solar power in space to address the massive energy needs for artificial intelligence. The project carries the name “Galactic Brain,” and it reframes the entire company thesis. Space based solar power isn’t just about beaming energy to Earth anymore — it’s about running AI compute where the energy actually is.
The case is compelling. Data centers consumed about 415 terawatt-hours of electricity in 2024, roughly 1.5% of global electricity use, according to the International Energy Agency. Goldman Sachs projects that power demand from data centers will surge 160% by 2030. Building new terrestrial facilities simply can’t keep pace. The bottlenecks in AI growth include real estate acquisition, utility connections, construction, and operational energy usage — a process Aetherflux estimates takes five to eight years to navigate on Earth.
Analysts expect the orbital data center infrastructure market to rise from around $1.77 billion in 2029 to nearly $39.1 billion by 2035, a compound annual growth rate of about 67.4%. Aetherflux enters this race with a structural advantage: it is already developing the space based solar power architecture that would feed those orbital compute nodes. Competing in the same space are U.S. startup Starcloud, which launched a small satellite carrying an Nvidia processor to run AI models in orbit, and China, which has begun deploying a proposed 2,800-satellite constellation for large-scale orbital compute.
The Defense Edge: Why the Pentagon Is Backing Space Based Solar Power
The U.S. Department of Defense spent $16 billion on energy in 2023. Over 3,000 U.S. military members or contractors were killed in fuel supply convoys in Iraq and Afghanistan between 2003 and 2007. Those two data points form the bedrock of Aetherflux’s military business case. The U.S. Department of Defense’s Operational Energy Capability Improvement Fund (OECIF) approved Aetherflux’s space solar program for funding to develop a proof of concept demonstrating power transmission from low Earth orbit to Earth.
Delivering energy to remote or contested environments without a vulnerable diesel convoy is a genuine asymmetric advantage. The startup is evaluating military sites for its first ground station, in part because of the more controlled airspace in these areas. This defense-first, commercial-later arc mirrors how SpaceX, Anduril, and Palantir each built their early revenue bases — and it’s a pattern venture investors understand deeply. Government contracts provide stable income, technical validation, and the credibility needed to drive broader commercial space infrastructure funding in subsequent rounds.
A Crowded Orbit: The Competition for Renewable Energy From Space
Aetherflux is not the only company exploring space-based solar. Others include Caltech, Virtus Solis, and UK-based Space Solar. U.S. startup Overview Energy launched in December 2025 having secured $20 million in funding, building satellites in geosynchronous orbit at around 36,000 kilometers above Earth. China’s state-backed push toward a 1-kilometer-wide orbital solar power station adds geopolitical weight to an already competitive sector.
Aetherflux holds several structural edges. Its LEO constellation approach is faster and cheaper to deploy than geostationary alternatives. Its dual-use architecture — delivering renewable energy from space to Earth’s surface AND powering orbital data center infrastructure for AI — creates multiple revenue streams from a single technology stack. According to SNS Insider research published in March 2026, the space-based solar power market was valued at $3.46 billion in 2025 and is projected to reach $10.70 billion by 2035, growing at a CAGR of 11.95%. Government and defense applications currently dominate with a 54.83% market share — Aetherflux’s primary revenue target right now. The commercial runway beyond that is enormous.
What a $2 Billion Valuation Says About the Future of Space Based Solar Power
Valuations aren’t built on demos. They’re built on conviction about where a market is going — and how defensible a company’s position is when it gets there. Bhatt’s stated goal is “to build something that competes with terrestrial economics,” and investors appear to believe he has the team, timing, and technology to achieve it. Space based solar power has transformed from a fringe concept to a venture capital priority in under two years, propelled by plummeting launch costs, maturing satellite hardware, and an AI energy bottleneck that no terrestrial solution can fully address at the pace demand requires.
Execution risks are real. Proving the wireless power transmission technology in the 2026 demo, hitting the Galactic Brain Q1 2027 target, and scaling the low earth orbit power grid toward thousands of satellites are all formidable engineering and commercial challenges. But Aetherflux has assembled one of the strongest teams in the space energy sector, secured military and VC backing from the highest tiers, and identified a problem so vast that even a partial solution would be worth far more than $2 billion.
Frequently Asked Questions
What is Aetherflux and who founded it?
Aetherflux Inc. is an American renewable energy company founded by Baiju Bhatt, the co-founder and former co-chief executive officer of Robinhood. Based in San Carlos, California, the company seeks to commercialize space-based solar power — collecting solar energy in space with satellites and transmitting it to Earth.
How does Aetherflux’s space based solar power technology actually work?
The company plans to build a constellation of satellites that collect solar energy in space via solar panels, distributing the energy back to ground stations on Earth through infrared lasers. The approach differs from government and university designs, using infrared lasers instead of microwaves. Ground stations then convert that laser light back into usable electricity.
How much has Aetherflux raised and who are its investors?
Aetherflux has secured $60 million in funding, including backing from Breakthrough Energy Ventures and Andreessen Horowitz.Index Ventures and Interlagos led the Series A round, with participation from Andreessen Horowitz, NEA, and actor Jared Leto, among others. Now a Series B at a $2 billion valuation is reportedly in progress.
What is Aetherflux’s “Galactic Brain” project?
In December 2025, the company announced its Galactic Brain project, which sought to bring an “orbital data center” into commercial operation by the first quarter of 2027, powered by its existing space-based solar energy infrastructure to fuel artificial intelligence.
Why is the U.S. Department of Defense interested in space based solar power?
The U.S. Department of Defense’s Operational Energy Capability Improvement Fund (OECIF) approved Aetherflux’s space solar program for funding to develop a proof of concept demonstrating power transmission from low Earth orbit to Earth.The military’s interest stems from the need to deliver reliable energy to remote or contested environments without vulnerable fuel supply chains.
What is the current market size for space-based solar power?
The space-based solar power market was valued at $3.46 billion in 2025 and is projected to reach $10.70 billion by 2035, growing at a CAGR of 11.95% during 2026–2035,according to SNS Insider. The orbital data center segment, which Aetherflux is also targeting, is projected to grow even faster — from $1.77 billion in 2029 to $39.1 billion by 2035.
Who are Aetherflux’s main competitors in the space solar power sector?
Aetherflux is not the only company exploring space-based solar. Others include Caltech, Virtus Solis, and UK-based Space Solar. The competition also intensified when China announced plans for a massive 1-kilometer-wide solar power station in space that will beam energy back via microwaves rather than lasers. Overview Energy, which launched in late 2025 with $20 million in seed funding, also competes in the U.S. market.
