Aetherflux, founded by Robinhood co-founder Baiju Bhatt, is reportedly raising a $250M-$350M Series B at a $2B valuation to beam solar power from space. This massive round highlights how VCs are aggressively funding high-capex orbital infrastructure to solve the terrestrial AI energy crisis. Founders must note that solving critical industry bottlenecks now commands unprecedented premiums.
The AI Energy Crisis Meets Orbital Infrastructure
The explosive growth of artificial intelligence has created an unprecedented bottleneck: energy. Terrestrial power grids are buckling under the intense demands of modern AI data centers. Enter space-based solar power (SBSP). Aetherflux, founded in 2024 by Robinhood co-founder Baiju Bhatt, is pioneering a solution to beam solar energy from low Earth orbit (LEO) satellites directly to Earth via lasers.
Rather than competing in the crowded satellite connectivity space (like Starlink or OneWeb), Aetherflux is building energy and compute infrastructure. Their vision includes beaming power to 5-10 meter portable ground stations 24/7, bypassing weather interference, and eventually deploying “Galactic Brain” orbital data centers. This represents a monumental shift from software-driven AI investments to hard-tech, high-capex orbital infrastructure designed to feed the AI boom.
Dissecting the $2B Valuation and Capital Stack
Aetherflux is currently in advanced talks to raise a Series B round between $250 million and $350 million, led by Index Ventures, at a staggering $2 billion pre-revenue valuation. This makes it one of the largest space tech rounds of the year, echoing the massive capital flows seen in companies like Relativity Space ($4.2B valuation in 2021) and OneWeb ($3.4B post-bankruptcy in 2020).
Before this mega-round, Aetherflux had raised a total of $60 million. This included a crucial $10 million seed round funded entirely by Bhatt himself, followed by a $50 million Series A in April 2025 backed by heavyweights like Andreessen Horowitz (a16z), New Enterprise Associates (NEA), and Bill Gates’ Breakthrough Energy Ventures. The presence of these top-tier funds indicates that the venture capital ecosystem is willing to underwrite massive technical risk if the total addressable market—in this case, the multi-billion-dollar global AI energy market—is large enough.
De-Risking High Capex: The DeepTech Playbook
Space-based solar power has historically been relegated to science fiction due to insurmountable costs and technological hurdles. However, Aetherflux is employing a rigorous de-risking strategy that deeptech founders should study:
- Strategic Partnerships for Speed: Instead of building everything from scratch, Aetherflux is partnering with satellite bus manufacturers like Apex Space (using their Aries bus) to launch their first LEO demonstration in Q1 2026. This allows them to focus purely on their proprietary payload—the solar-to-laser conversion technology.
- Milestone-Driven Roadmap: They have clearly delineated their timeline: a tech demo in 2026, followed by a commercial orbital data center node in Q1 2027. This gives investors clear inflection points for value creation.
- Targeting Niche, High-Value Early Adopters: Before powering massive commercial data centers, Aetherflux is evaluating military sites. By securing Department of Defense (DoD) contracts, they can test their 5-10m ground stations in controlled airspace, navigating complex regulatory and spectrum hurdles while securing non-dilutive capital.
Strategic Implications and Actionable Takeaways for Founders
The Aetherflux funding event is a masterclass in positioning and capital strategy for deeptech founders.
1. Anchor on a Critical Bottleneck Aetherflux isn’t selling “space technology”; they are selling “AI energy continuity.” Founders must position their deeptech solutions as the definitive answer to a massive, immediate industry bottleneck. If you can solve the biggest pain point of the fastest-growing sector, valuation multiples will detach from traditional revenue metrics.
2. Put Skin in the Game to Attract Top Tier Capital Bhatt’s initial $10 million personal investment was not just runway; it was a powerful signaling mechanism. While not every founder has $10M, demonstrating extreme conviction through bootstrapping early prototypes or securing grants before approaching VCs drastically changes the negotiation dynamic.
3. Sequence Your Go-To-Market (GTM) Strategy Do not aim for the hardest commercial market first. Aetherflux’s pivot toward military and remote disaster zones for initial deployment is brilliant. Founders in hardware and deeptech must identify early adopters who are price-insensitive and willing to deal with beta products (like the DoD). Use these early deployments to fund R&D and refine the product for the broader B2B market.
4. Leverage the Ecosystem By utilizing an existing satellite bus (Apex Space), Aetherflux avoids reinventing the wheel. Founders should aggressively seek out modular, off-the-shelf components for the non-core aspects of their product. Your proprietary IP should be the only thing you build from scratch.