Prometheus Hyperscale’s Liquid Cooling Strategy: A 2025 Deep Dive into Sustainable AI Infrastructure
Industry Adoption: Prometheus Hyperscale Spearheads Liquid Cooling from Niche Concept to Mainstream AI Strategy
Between 2021 and 2024, Prometheus Hyperscale, then known as Wyoming Hyperscale, championed a visionary but largely theoretical application of liquid cooling. The company’s strategy was centered on a single, massive project: a planned 1 GW, $10 billion data center in Evanston, Wyoming, that promised to use a proprietary liquid cooling system to cut energy use by 50%. During this period, the concept was ambitious but unproven at scale, with its primary commercial validation being a non-binding letter of intent with nuclear developer Oklo for 100 MW of power. The adoption narrative was one of a bold, isolated bet on a future technology to solve the AI industry’s energy problem.
The landscape has dramatically shifted in 2025. This year marks a clear inflection point where Prometheus Hyperscale’s liquid cooling strategy moved from a singular concept to a replicable, market-validated model. The appointment of liquid cooling expert John Gross as CTO in January signaled a deep technical commitment. This was immediately followed by a series of high-impact partnerships that demonstrated the technology’s commercial viability and adaptability. The collaboration with ENGIE to co-locate liquid-cooled data centers with renewable energy in Texas showed the model could be exported. The partnership with Spiritus and Casper Carbon Capture to build a 1.5 GW carbon-negative campus in Wyoming elevated the technology from mere efficiency to a tool for achieving negative emissions. This rapid succession of diverse applications—from renewable co-location to carbon-negative designs and hybrid power solutions with Conduit Power—proves that advanced liquid cooling is no longer a niche idea but a foundational, bankable technology for the next generation of AI infrastructure.
Table: Prometheus Hyperscale Strategic Investments
| Partner / Project | Time Frame | Details and Strategic Purpose | Source |
|---|---|---|---|
| Carbon-Negative Digital Infrastructure Campus | October 7, 2025 | A minimum initial investment of $500 million for a project in Wyoming with partners Spiritus and Casper Carbon Capture. The project is planned for up to 1.5 GW of IT capacity, scaling Prometheus’s non-consumptive water-cooling systems. | Prometheus Hyperscale, Spiritus, and Casper Carbon … |
| Investment in XL Batteries | September 18, 2025 | As a key partner, Prometheus backs XL Batteries, which secured a $7.5 million investment. This funding directly supports the development of long-duration battery technology that Prometheus plans to deploy at its liquid-cooled data centers. | Prometheus Hyperscale-backed LDES developer XL … |
| Wyoming Data Center Campus Expansion | September 3, 2025 | Announced the expansion of its flagship Evanston, Wyoming site to 1 GW capacity and revealed a pipeline of four additional U.S. sites, signaling a major capital investment in scaling its liquid-cooled data center model. | News | PrometheusHyperscale |
| Evanston, Wyoming Flagship Data Center | 2024 | A foundational $10 billion capital investment plan for a 1 GW hyperscale data center campus on a 640-acre site. This project is the anchor for the company’s proprietary liquid cooling and clean energy integration strategy. | Former BP Chief Joins A.I. Data Center Developer |
Table: Prometheus Hyperscale Strategic Partnerships
| Partner / Project | Time Frame | Details and Strategic Purpose | Source |
|---|---|---|---|
| Spiritus and Casper Carbon Capture | October 7, 2025 | To develop a 1.5 GW carbon-negative digital infrastructure campus in Wyoming. Prometheus will design and finance compute halls using its proprietary aquifer, non-consumptive water-cooling systems. | Prometheus Hyperscale, Spiritus, and Casper Carbon … |
| Conduit Power | September 3, 2025 | To deploy bridge and backup power for two liquid-cooled data center sites in Texas, supporting up to 300 MW at each site to ensure rapid speed-to-market for AI infrastructure. | Prometheus Hyperscale and Conduit Power Form … |
| ENGIE North America | September 2, 2025 | To co-locate Prometheus’s liquid-cooled data centers at ENGIE’s renewable energy and battery storage facilities in Texas, directly integrating sustainable power with high-demand computing. | ENGIE collaborates with Prometheus Hyperscale to co- … |
| Oklo | July 22, 2025 | Signed a non-binding letter of intent for a Power Purchase Agreement (PPA) for Oklo to provide 100 MW of power from its small modular reactors (SMRs) to fuel Prometheus’s operations. | Oklo and Vertiv collaborate on nuclear data center power … |
| Lumen Technologies | June 25, 2025 | To provide ultra-low latency and secure connectivity for its AI-ready, liquid-cooled facilities, leveraging Lumen’s Private Connectivity Fabric. | AI-Ready Data Center Infrastructure Explained – Lumen Blog |
| XL Batteries | May 14, 2025 | To deploy on-site, long-duration Organic Flow Battery storage systems, starting with a 333 kW pilot in 2027 at a Wyoming site to enhance grid resilience for its liquid-cooled operations. | Prometheus Hyperscale and XL Batteries Partner to … |
| PureWest Energy and Frontier Carbon Solutions | May 6, 2025 | To create a zero-carbon power solution for the flagship 1.2 GW Wyoming campus, using verified low-carbon natural gas and carbon capture services to achieve a carbon-neutral footprint. | Prometheus Hyperscale, PureWest Energy and Frontier … |
| Lumen Technologies | December 17, 2024 | Chosen to provide advanced network services for its energy-efficient data centers, leveraging Lumen’s extensive fiber network for high-density AI workloads. | Lumen Partners with Prometheus Hyperscale to Enhance … |
Geography: Prometheus Hyperscale’s Liquid Cooling Model Expands from Wyoming to Texas
In the 2021-2024 period, Prometheus Hyperscale’s geographic footprint was exclusively centered on Wyoming. The company’s entire strategy and identity were tied to its flagship $10 billion, 1 GW data center planned for Evanston. This singular focus on Wyoming was strategic, leveraging the state’s favorable regulatory environment, cool climate, and the founder’s land ownership to develop and prove out its ambitious liquid cooling and clean energy model.
The year 2025 has marked a pivotal geographic expansion. While Wyoming remains a core hub with the announcement of a new 1.5 GW carbon-negative campus in Natrona County, the company has made a significant move into Texas. Partnerships with ENGIE to co-locate with renewable assets near Dallas and with Conduit Power to deploy hybrid power for two 300 MW sites demonstrate a clear strategy to replicate its model in new markets. This expansion into Texas, a major energy and technology hub, signals that the company’s liquid cooling solution is not just a site-specific concept for a cool climate but a commercially viable technology ready for deployment in diverse and competitive energy markets.
Technology Maturity: Prometheus Hyperscale’s Liquid Cooling Evolves from Concept to Commercial Application
From 2021 to 2024, the liquid cooling technology at the heart of Prometheus Hyperscale was in a pre-commercial, design-centric phase. It was presented as a “proprietary liquid cooling system” with ambitious targets—a 50% energy reduction and zero water use—but lacked public, scaled deployment. The primary technology integration was a forward-looking plan to connect its flagship Wyoming site with 100 MW of power from Oklo’s yet-to-be-built small modular reactors. The technology was a compelling promise, central to the company’s identity but still on the drawing board.
In 2025, the technology’s maturity has advanced significantly, moving from concept to applied commercial product. The company began deploying and naming specific versions of its technology, such as the “proprietary aquifer, non-consumptive water-cooling systems” for the new Wyoming campus and a “proprietary geothermal cooling technology” for its Texas expansion. These are no longer just concepts but are the basis for nine-figure investments and gigawatt-scale commercial projects. Furthermore, Prometheus is now piloting complementary technologies, evidenced by the agreement with XL Batteries to install a 333 kW demonstration-scale Organic Flow Battery in 2027. This shift from a singular, future-state system to a portfolio of specific, deployable cooling technologies and active pilots of supporting energy systems marks a clear validation of its technical and commercial readiness.
Table: SWOT Analysis of Prometheus Hyperscale’s Liquid Cooling Strategy
| SWOT Category | 2021 – 2024 | 2025 | What Changed / Validated |
|---|---|---|---|
| Strengths | Visionary concept for a 1 GW sustainable data center in Wyoming. A bold promise of 50% energy reduction with proprietary liquid cooling. | Secured multiple high-impact partnerships (ENGIE, Spiritus). Quantifiable performance claims (50% power, zero water). Appointed liquid cooling expert John Gross as CTO. | The company validated its ambitious claims by attracting major energy and technology partners, solidifying its leadership and moving from a single project vision to a multi-project reality. |
| Weaknesses | Largely a single-project company (Wyoming Hyperscale). Proprietary technology was unproven at scale. Relied on a non-binding LOI with Oklo for only 10% of its flagship project’s power needs. | Execution risk on multiple large, complex projects in different states. Pilot for critical long-duration storage technology (XL Batteries) is not scheduled until 2027. Heavy dependence on partners for energy and carbon capture. | The strategy’s complexity has increased. While partnerships are a strength, they also introduce dependencies and significant project management challenges, shifting the primary risk from conceptual to executional. |
| Opportunities | Addressing the immense power and cooling demands of the nascent AI boom. Potential first-mover advantage in combining liquid cooling with SMRs. | Creating a new market for carbon-negative data centers with Spiritus. Expanding the model to major energy hubs like Texas. Integrating with diverse energy sources (renewables, batteries, carbon-offset gas). | The market opportunity has been validated and expanded. Prometheus is no longer just building efficient data centers but creating a new, integrated, and sustainable infrastructure class that includes carbon removal. |
| Threats | Securing the full $10B project financing for the Wyoming site. Competition from established data center operators. Delays in the deployment of partner technologies like Oklo’s SMRs. | Navigating regulatory hurdles for large-scale infrastructure in multiple states. Energy price volatility impacting project economics. Complexity of integrating disparate partners and technologies successfully. | The threats have evolved from financing a single vision to managing the systemic risks of a complex, multi-state, multi-partner industrial ecosystem. The success of one project is now tied to the performance of many others. |
Forward-Looking Insights and Summary
The developments in 2025 signal that Prometheus Hyperscale has successfully transitioned its liquid cooling technology from a bold vision into a bankable, scalable platform for AI infrastructure. The year ahead will be less about promises and more about execution. Market actors should closely monitor tangible progress on the ground: groundbreaking and construction timelines for the newly announced projects in Texas and the carbon-negative campus in Wyoming. These projects are the ultimate test of the company’s ability to integrate its proprietary cooling systems with its partners’ complex energy and carbon-capture technologies.
The most critical signal to watch is the company’s ability to deliver on its energy strategy. While partnerships with ENGIE, PureWest, and the LOI with Oklo are impressive, securing firm, long-term power for multiple gigawatts of capacity remains the central challenge. Finally, the performance of the Organic Flow Battery pilot with XL Batteries in 2027, though distant, will be a key indicator of Prometheus’s long-term ambition to de-risk its operations from grid volatility. In sum, Prometheus Hyperscale is no longer just a data center developer; it is an orchestrator of a new, sustainable energy and computing ecosystem, and its ability to manage this complex choreography will define its market leadership.
Frequently Asked Questions
What is Prometheus Hyperscale’s core technology and how did it change in 2025?
Prometheus Hyperscale’s core technology is a proprietary liquid cooling system designed for AI data centers, promising a 50% reduction in energy use and zero water consumption. Prior to 2025, this was a largely theoretical concept tied to a single Wyoming project. In 2025, it evolved into a commercially applied product with specific, named versions like “proprietary aquifer, non-consumptive water-cooling systems” and “proprietary geothermal cooling technology” being deployed in gigawatt-scale projects, validating its readiness for the market.
How has Prometheus Hyperscale’s business strategy evolved from its early years to 2025?
Between 2021-2024, the company’s strategy was centered on a single, visionary 1 GW project in Evanston, Wyoming. In 2025, the strategy shifted dramatically from a singular concept to a replicable, market-validated model. This is evidenced by its geographic expansion into Texas, a series of diverse partnerships (e.g., ENGIE for renewables, Spiritus for carbon-negative design), and the application of its cooling technology across multiple projects, proving it is a foundational and bankable solution for AI infrastructure.
How is Prometheus Hyperscale powering its data centers to achieve its sustainability goals?
Prometheus is using a multi-pronged energy strategy by partnering with various energy specialists. This includes co-locating with renewable energy and battery facilities (ENGIE), creating a zero-carbon power solution using low-carbon natural gas and carbon capture (PureWest and Frontier), exploring nuclear power with a letter of intent for small modular reactors (Oklo), and piloting long-duration battery storage (XL Batteries) to enhance grid resilience.
Where are Prometheus Hyperscale’s data centers located?
Initially, the company’s focus was exclusively on a flagship 1 GW campus in Evanston, Wyoming. In 2025, while continuing to expand in Wyoming with a new 1.5 GW carbon-negative campus, Prometheus made a significant geographic expansion into Texas. This includes partnerships to co-locate data centers near Dallas and deploy two 300 MW sites in the state, demonstrating the model’s adaptability to different climates and energy markets.
According to the SWOT analysis, what are the primary risks for Prometheus Hyperscale in 2025?
The primary risks have shifted from conceptual to executional. Key challenges identified for 2025 include: the execution risk of managing multiple large, complex projects in different states; a heavy dependence on partners for critical components like energy and carbon capture; and the overall complexity of successfully integrating disparate partners and technologies. The success of its strategy now hinges on its ability to orchestrate this complex industrial ecosystem.
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