The news came at an industry summit in Austin, announced casually enough by a CEO who'd spent the better part of a year quietly stitching together funding. Gary Calnan, head of CisLunar Industries, revealed that his Loveland, Colorado-based company had closed an oversubscribed seed round—$2.6 million, to be exact—aimed at scaling production of a technology that sounds prosaic until you consider the setting: power processing units for satellites and spacecraft venturing beyond Earth orbit.
The round, finalized in late March, drew Colorado ONE Fund as lead investor, with Stout Street Capital, RIT Venture Fund, Deming Center Venture Fund, and a handful of strategic angels joining in. For a startup working in the decidedly unglamorous business of electrical conversion systems, the investor enthusiasm suggests something broader at play. Perhaps it's the proliferation of satellite constellations. Or the creeping realization that electric propulsion—once a niche technology—has become table stakes for modern spacecraft design.
Calnan framed the capital as enabling faster customer delivery, citing what he called "strong and growing demand" for CisLunar's power electronics. The company's EPIC product line (Electric Power Intelligent Conversion, in case acronyms are your thing) serves missions from low Earth orbit out to cislunar space—the gravitational realm between Earth and the Moon where NASA and commercial players alike are plotting future infrastructure.
The Unglamorous Business of Spacecraft Guts
CisLunar manufactures modular power processing units, the sort of critical-but-invisible components that convert and manage electrical currents for spacecraft systems. Think of them as the industrial transformers of space hardware, though considerably more sophisticated and operating in environments where failure isn't an option.
The product slate includes the MOD-PPU-1000, the MOD-PPU-6000, and an ultra-high-voltage power supply—names that betray their engineering pedigree. The customer list, however, reads more like a who's who of space ambition: NASA, the U.S. Space Force, three defense contractors (both domestic and international), and ThinkOrbital, a company pursuing orbital manufacturing.
One selling point stands out. In mid-2024, a CisLunar 20 kV power supply flew aboard ThinkOrbital's electron-beam welding system, earning the startup what insiders call "space heritage"—proof that your hardware can survive launch, vacuum, radiation, and the general hostility of the orbital environment. It's a credential that matters, particularly when pitching to risk-averse government buyers or prime contractors.
A Seed Round Built in Stages
The fundraise itself unfolded in tranches, as these things often do. Colorado ONE Fund came in first with $1 million last July. Stout Street Capital followed in November. Calnan made the closing official at the Tectonic Defense Summit on March 13, though the final tally—$2.6 million, oversubscribed—didn't land publicly until ten days later.
There's a certain rhythm to rolling closes like this: early believers signal confidence, later investors pile in, and momentum builds even as the founders juggle term sheets and legal paperwork. For a hardware startup in a capital-intensive sector, the model offers breathing room to hit milestones while fundraising continues in the background.
Flight Tests, Defense Dollars, and Market Gaps
CisLunar has skin in the game beyond customer contracts. The company secured a slot on Momentus's Vigoride-7 mission through NASA's Flight Opportunities program—a ride originally slated for February that slipped to late March, as space schedules tend to do. It's another chance to prove the technology works where it counts.
Meanwhile, defense dollars are flowing. A $1.9 million U.S. Space Force contract, awarded in mid-2025, funds work on advanced space power and propulsion systems alongside partners including Lockheed Martin and Safran Space & Defense. The involvement of established primes lends weight; these aren't speculative R&D projects but programs with clearer paths to deployment.
The broader market context helps explain investor interest. An industry analysis from late 2024 noted that many satellite manufacturers still build power processing units in-house—not out of preference, necessarily, but because off-the-shelf options remain limited. CisLunar's bet is that modularity and proven performance can win over customers tired of reinventing the wheel for each new spacecraft bus.
Whether $2.6 million proves sufficient to capture that opportunity remains an open question. Hardware startups burn cash faster than software plays, and space hardware doubly so. But for now, at least, CisLunar has runway—and a product that's already proven it can work 200 miles above the surface, where the real test begins.
