Accelsius deploys liquid cooling systems at Equinix lab in Virginia

Accelsius, a two-phase liquid cooling company which is commercializing technology developed by Nokia's Bell Labs, is to deploy one of its cooling systems at an Equinix lab in Virginia. The company recently announced that its proprietary NeuCool IR80 system will be deployed at Equinix’s Co-Innovation Facility (CIF) in the DC15 International Business Exchange (IBX) data center at the Equinix Ashburn Campus in Q3 2025.

This lab provides a platform for Equinix to work with companies that are developing new technologies, helping customers see potential solutions up close in a working environment.

“Liquid cooling is revolutionizing how data centers cool powerful, high-density hardware,” said Pawel Wlodarczak, innovation director of global design & construction at Equinix. “By working with companies like Accelsius in our Co-Innovation Facility, we are able to help the industry continue to iterate and innovate on high-density cooling solutions - such a critical aspect of the data center.”

The NeuCool system sees vaporators (also known as cold plates) mounted directly to targeted hot-spot chips. Dielectric refrigerant flows through the vaporators, where it nucleates into a vapor, which then travels to a CDU and condenses back into a liquid in a closed-loop system, then returning to the vaporator for additional cooling.

Direct-to-chip systems usually rely on water, which has a high heat capacity, but Accelsius is using a dielectric coolant, allowing it to boil in the circulating system to remove more heat.

Oklo and Vertiv collaborate on nuclear data center power and cooling tech

Small nuclear reactor developer Oklo and data center power and cooling firm Vertiv are partnering to use steam from the former’s nuclear plants to power the latter’s cooling tech. The companies this week announced a collaboration agreement focused on the co-development of power and thermal management solutions tailored specifically for hyperscale and colocation data centers that will be deploying Oklo’s small modular reactors (SMRs).

The solutions will be powered by steam and electricity from Oklo’s advanced nuclear power plants. The companies claim that leveraging heat from Oklo’s on-site power plant to drive Vertiv’s cooling systems will “significantly enhance” data center energy efficiency.

Oklo is developing a 75MW modular reactor dubbed the Aurora Powerhouse. It aims to deliver its first reactor by 2027. As well as power, nuclear reactors create large amounts of heat and steam, which have previously been cited as potentially useful in district heating schemes.

Oklo has signed several agreements over the past year with several data center firms, with a customer pipeline exceeding 14GW of capacity.

Submer to deploy 'up to' 1GW of liquid cooled data centers in Madhya Pradesh, India

Liquid cooling and data center firm Submer Technologies plans to develop data centers in central India. The company and the Government of Madhya Pradesh in India this week signed a Memorandum of Understanding (MoU) to jointly develop up to 1GW of liquid-cooled AI data centers in Madhya Pradesh.

Details on the number, specification, and location of planned data centers weren’t shared.

Sanjay Dubey, additional chief secretary of the Department of Science and Technology – Department of Urban Development and Housing, Government of Madhya Pradesh, said: “Such collaboration proves to be a significant step towards strengthening the state's digital infrastructure to global standards. By integrating cutting-edge technologies such as liquid cooling and AI-ready data centers, we are building a strong foundation for sustainable growth and positioning Madhya Pradesh as a hub for next-generation digital infrastructure and innovation.”

As part of the agreement, Submer and the Government of Madhya Pradesh said they will work together to define liquid-cooling design standards, foster local supply chains, and support workforce development.

Founded in 2015 by Daniel Pope and Pol Valls Soler, Submer has historically provided indoor and outdoor single-phase immersion cooling pods and larger-scale containerized pods.

Earlier this year, Submer announced plans to expand its remit and move into building data centers. The company’s first 56MW facility will be in Barcelona, Spain.

Dataprana launches 30MW immersion cooled crypto data center site in Texas

Almost a year after the plans were first announced, cryptomine and AI data center company Dataprana has launched a 30MW mining site in La Marque, Texas. Dataprana’s flagship site became operational in early June and hosts a modular setup of 30 immersion-cooled mining containers containing 5,000 of the latest ASIC (application-specific integrated circuits) machines from manufacturers including Bitmain, Whatsminer, and Canaan.

The company stated that it worked hand-in-hand with Intelliflex, which designs and builds the modular water-cooled mining containers, and provided initial on-site operational support. Additional containers were sourced from Arctic Systems.

La Marque is a city in Galveston County, 40 miles south of Houston and just west of Texas City.

Combined with its three indoor data centers located in New York, the La Marque site adds to Dataprana’s existing 67MW of hosting capacity, giving a combined capacity of 97MW in total.

In November 2024, the company announced it had entered a joint-venture agreement alongside DC Futureminds, Ltd to build a 1.5MW artificial intelligence (AI) data center in Galveston County, Texas.

The site is intended to act as a proof-of-concept showcasing Dataprana’s ability to attract GPU-as-a-service providers seeking co-location spaces and bespoke data center solutions.

DayOne breaks ground on 20MW data center in Singapore

APAC data center firm DayOne has broken ground on its first data center in Singapore. Announced this week, the 20MW facility will span about 40,000 square meters (430,555 sq ft) of gross floor area, with Phase I scheduled to be ready-for-service (RFS) in 2026.

The facility will support hybrid air and liquid cooling technologies, and will reportedly be Singapore’s first data center with on-site Solid Oxide Fuel Cell (SOFC) power generation, part of a proof-of-concept for hydrogen-based energy.

DayOne was awarded capacity under a pilot scheme by the IMDA and the Singapore Economic Development Board (EDB). The company, along with Equinix, Microsoft, and AirTrunk – were granted a combined 80MW of capacity for new facilities in Singapore as the city-state looks to end a years-long moratorium on new developments.

The groundbreaking ceremony was attended by senior government and industry leaders, including those from Infocomm Media Development Authority (IMDA), Digital Industry Singapore (DISG), Sembcorp, the National University of Singapore (NUS), and other partners.

DayOne signs PPA, partners with NUS

This week also saw DayOne sign a 10-year Power Purchase Agreement (PPA) with Sembcorp Power Pte Ltd, a wholly-owned subsidiary of Sembcorp Industries (Sembcorp). The energy will be backed by bundled renewable energy certificates (RECs), sourced locally or imported via grid-to-grid connection.

DayOne also signed a research and development partnership agreement with the National University of Singapore (NUS) as part of the Sustainable Tropical Data Center Testbed Phase 2.0 (STDCT 2.0) initiative. The program aims to explore and develop solutions around the cooling needs of tropical data centers.

Krohne increases production of magnetic flow meters for data center market

Krohne, the manufacturer of instrumentation and measurement tools, is expanding its production for the data center market. The company will develop more magnetic flow meters (magmeters) for data centers, "dedicating a significant portion of its annual production capacity to meet escalating demand."

Magmeters use a transmitter and sensor to measure flow, including for liquid cooling systems.

Krohne has also established a dedicated Center of Excellence at its facility in Beverly, Massachusetts, purely for the data center market.

"It has become apparent that to serve the vast volume of meters required to construct the future AI-driven data centers, Krohne needed to make this bold step," said Rich Hendgen, CEO of Krohne America.

Activate Capital invests in Xnrgy to fuel data center cooling tech

Venture capital firm Activate Capital has invested in cooling firm Xnrgy Climate Systems. The companies this week announced Activate has made a strategic investment in Xnrgy, a North American manufacturer of air handling and liquid cooling technologies.

The undisclosed investment will support Xnrgy's growth, expand its domestic manufacturing presence, and accelerate the delivery of new cooling solutions for data centers and other mission-critical infrastructure.

"We are thrilled to partner with Activate Capital as we enter this next phase of growth," said Wais Jalali, founder and CEO of Xnrgy. "Their expertise in scaling sustainable technologies aligns with our vision to deliver ultra-efficient cooling systems that meet the performance, environmental, and reliability demands of our customers.“

Xnrgy opened the first phase of a new 275,000-square-foot (25,548 sqm) manufacturing facility in Mesa, Arizona, in May. In total, the facility is planned to be a one-million sq ft (92,903 sqm) innovation campus.

Activate’s other investments include data center firm Crusoe, satellite firm MuonSpace, and several energy-related startups.

Google signs first long duration energy storage partnership

Google has signed its first partnership with a long-duration energy storage (LDES) company. The tech giant signed a long-term partnership with Energy Dome to support multiple commercial deployments worldwide to help scale the company’s CO2 battery technology.

The Milan-based LDES firm has developed a novel CO2 battery, which utilizes CO2 held in a unique dome-shaped battery. The system is deployed when renewable energy is abundant on the grid and uses the power to compress CO2 gas into a liquid. When the grid requires more power, the liquid CO2 expands back into a hot gas under pressure, which spins a turbine that can feed energy back into the grid for periods ranging from eight to 24 hours.

In addition to the commercial partnership, Google has also made a direct investment in the company. The partnership is part of a broader push by Google to invest in LDES technology. It plans to support a growing range of LDES technologies currently under development through both commercial agreements to support more mature technologies, such as Energy Dome’s, in addition to earlier-stage investments.

Energy Dome has several deployments already underway. Last year, it signed its first supply contract within the US market with Alliant Energy. It has also signed an offtake agreement with renewable energy firm Engie to supply power from its first commercial deployment in Ottana, Sardinia, Italy.

KKR considers acquiring ST Telemedia Global Data Centres at $5bn valuation

US investment firm KKR & Co. is in talks to acquire ST Telemedia Global Data Centres (STT GDC). The sale could happen within weeks, but it is not guaranteed. The data center firm is part of ST Telemedia, itself owned by Singaporean wealth fund Temasek Holdings.

STT GDC operates, or is building, data centers in India, Indonesia, Japan, the Philippines, Singapore, South Korea, Thailand, the United Kingdom, Germany, Malaysia, Vietnam, and Italy. Its portfolio totals more than 95 data centers and 1.7GW of capacity across 11 geographies and points of presence across more than 20 markets. The company owns stakes in Chinese operator GDS and UK-based firm Virtus.

KKR owns data center operator CyrusOne alongside BlackRock-owned GIP, and is backing European operator GTR. It acquired a 20 percent stake in Singtel’s data center business for $800 million in 2023. That year, it acquired liquid cooling company CoolIT alongside Mubadala.