Stellios exits stealth with $5M to rebuild US high-power energy systems
What's the deal? StelliosDealroom has a profile for this one. Try Dealroom → Technologies, an Austin-based high-energy power systems company, emerged from stealth with an oversubscribed $5 million pre-seed round. Sofreh CapitalDealroom has a profile for this one. Try Dealroom →, Wave Function VenturesDealroom has a profile for this one. Try Dealroom →, Cubit CapitalDealroom has a profile for this one. Try Dealroom →, Mana VenturesDealroom has a profile for this one. Try Dealroom →, Atoms & Bits, Output Capital, and angel Erik Bruckner took part.
What's the endgame? Founded in 2026 by Caltech Ph.D. Richard Starson, Stellios designs the hardware behind high-power microwave (HPM) systems — vacuum-electronic devices and high-voltage power generation and control. Its roadmap runs from counter-drone directed energy to compact fusion power and, later, fusion-driven propulsion.
The company will use the money to deliver its first contracted HPM systems, build domestic R&D and pilot manufacturing, expand its team, and advance Genesis, its AI-native engineering platform.
Why now? Stellios signed $2 million in customer purchase orders before raising outside capital, and the round closed above target within weeks. "Now is the time to rebuild that capability in America, addressing urgent defense needs today while laying the foundation for compact fusion and entirely new propulsion systems," Starson said.
The pitch targets a gap in air defense: expensive missiles do not scale against cheap drones. Its Stellios Shield platform promises speed-of-light, non-kinetic engagement, which it says is pilot-deployable in nine months.
By the numbers: At $5 million, the round sits in roughly the 36th percentile for deal size — modest beside larger energy and defense financings. But the signed orders give the launch a rare early commercial signal for a pre-seed company.
What could go wrong? Stellios spans HPM hardware, directed energy, compact fusion, and propulsion — an unusually broad mix for a pre-seed startup. The near-term defense and industrial microwave work is more testable than the longer-horizon fusion program, and the commercial signal only holds if those orders convert and systems ship at scale.
The signal: US electricity demand is climbing on data-center growth and electrification, with utilities planning more than $1.4 trillion in grid and power investment through 2030. Investors are backing everything from storage to nuclear and fusion to meet it — and Stellios is betting that defense revenue today can bankroll the fusion ambitions of tomorrow.
Read more: prnewswire.com
Image credit: Stellios
