Australian climate tech startup Enaxiom has raised US$1.8 million (A$2.5 million) in Seed funding as pressure mounts on the AI industry’s growing water footprint. The Sydney-based company develops cooling infrastructure designed to reduce water consumption inside modern AI data centers. Singapore investment collective Epic Angels led the round, with participation from BlackNova and Antler. The startup plans to deploy its technology commercially while accelerating expansion into the United States market.
The funding arrives as hyperscale AI deployments place unprecedented pressure on electricity grids and regional water supplies. Data center operators now face mounting scrutiny over the environmental cost of large-scale compute infrastructure. Enaxiom believes the cooling stack has become one of the industry’s least optimized layers despite its direct impact on operational sustainability. The company says its approach focuses specifically on heat rejection, a segment often overshadowed by high-profile chip and liquid cooling innovations.
Hydrocool System Targets Data Center Heat Rejection
Enaxiom’s core platform, Hydrocool, operates alongside liquid cooling systems such as direct-to-chip and immersion technologies. Instead of relying on potable water supplies, the platform uses non-drinking water sources including wastewater streams. The system also recovers high-quality water during operation, turning cooling infrastructure into a partial water recovery mechanism. That design positions Enaxiom within a rapidly expanding market focused on sustainable AI infrastructure.
The company built the technology on research conducted over the last decade. After validating performance through a 40kW pilot deployment, Enaxiom now intends to develop modular systems for commercial-scale operations. The startup says modularity will help operators integrate cooling systems faster across new and existing facilities. Meanwhile, operators searching for alternatives to conventional evaporative cooling systems may view water recovery as a strategic infrastructure advantage rather than an environmental add-on.
Investors Back Water Recovery as Strategic Infrastructure
Enaxiom was founded in Sydney in 2023 by Bijan Rahimi and Tia Collings. The startup has now raised a total of US$2.7 million (A$3.7 million) since launch. The company plans to use the fresh capital to scale commercial deployments, expand its workforce, and strengthen its presence in the United States. AI infrastructure growth across North America has intensified demand for cooling technologies capable of supporting denser compute environments without increasing water dependency.
Collings said the industry’s infrastructure bottlenecks now extend far beyond semiconductors and compute capacity. “As AI infrastructure scales, the real constraint is shifting from compute to energy and water,” she said. “We’re building cooling infrastructure that tackles this at the heat rejection layer, one of the most overlooked but critical parts of a data centre cooling system.” Her comments reflect a broader industry shift toward infrastructure efficiency as AI models consume greater amounts of energy and thermal capacity.
Female-Led Investors Double Down on Deep Tech Infrastructure
Epic Angels founding partner Maaike Doyer framed the investment as part of the group’s wider support for female founders building deep technology companies. The Singapore-based collective has increasingly focused on infrastructure startups operating in sectors shaped by climate pressure and industrial transformation. Enaxiom’s positioning around water recovery aligned closely with those priorities. The investment also highlights growing investor appetite for technologies sitting beneath the AI software layer.
Doyer said the startup reframed a critical environmental challenge into an infrastructure opportunity. “Data centers are one of the defining infrastructure challenges of our time, and water is rapidly becoming as critical a constraint as energy,” she said. “What makes Enaxiom compelling is that they have flipped the problem: instead of treating water consumption as an unavoidable cost of cooling, they have built a system that recovers it. And Tia is exactly the kind of founder we back: a female leader building deep technology in a space that has historically had very few of them”.
Water Efficiency Emerges as AI’s Next Infrastructure Battle
The AI sector’s explosive expansion has transformed cooling infrastructure from a background operational concern into a boardroom-level priority. Operators increasingly face regulatory scrutiny, community resistance, and resource limitations linked to data center water consumption. Startups building technologies around thermal efficiency and resource recovery now sit at the intersection of climate resilience and AI growth. Enaxiom enters that race with a thesis that future-ready data centers must manage water as strategically as power.
Large-scale AI clusters continue to push facilities toward higher rack densities and more aggressive cooling architectures. That shift creates opportunities for companies building infrastructure layers capable of reducing environmental strain while maintaining performance efficiency. Enaxiom’s focus on heat rejection gives it exposure to a market segment expected to expand alongside liquid-cooled AI deployments worldwide. Consequently, the company now moves from pilot validation into the far more difficult phase of commercial infrastructure adoption.
