On average, data centers require 1.8 m³ of water per megawatt-hour (MWh) of electricity consumed. This is especially challenging in already water-scarce regions such as California or Texas that are expanding their data center capacity. The good news is that there is a solution: atmospheric water harvesting based on nano-engineered reticular materials.
Find out more about the data center water challenge in our white paper: Sustainable AI in a Water-Scarce World
The atmosphere holds more water than all the world’s rivers and lakes combined. An Atmospheric water generator (AWG) taps into this vast and renewable resource by harvesting water from air.
This is particularly relevant for data centers because water is often the hidden constraint behind reliable cooling. Servers generate enormous heat, and many cooling systems still depend on large volumes of water to keep temperatures stable. So, what happens when a data center is built in a region where water is already scarce? What happens during drought restrictions, heat waves, or local pressure to prioritize municipal and agricultural supply?
That is where an AWG data center setup becomes interesting. Instead of drawing from local utilities, an Atmospheric water generator can produce water from air directly on-site and feed it into cooling and other operational needs. It can reduce reliance on potable water, cut exposure to water transport logistics, and strengthen operational resilience when external supply is disrupted.
But can any AWG do that? And can it work in dry places such as California, Nevada, or Texas? Many conventional Atmospheric water generation systems rely on cooling-condensation. They cool air to the dew point and condense water. In dry climates, the dew point can be very low, and energy needs rise quickly. That is why low-humidity water generation is the real hurdle for the AWG data center use case.
This is exactly where MOF water harvesting changes the equation. By using nano-engineered reticular materials such as Metal-Organic Frameworks, Atoco’s Atmospheric water harvesting technology can capture water molecules directly from air, enabling Atmospheric water generation even at low humidity levels.
Find out more about our low-humidity water generation technology based on Nobel Prize-winning science by our Founder here: Atmospheric Water Harvesting: Pure Water from Air Using Reticular Chemistry
What exactly do data centers gain from an Atmospheric water generator? Is Atmospheric water harvesting efficient enough to effectively tackle the data center water challenge, even in arid environments?
Yes, if you select the right technology. Installing Atoco’s Atmospheric water harvesting solutions can increase a data center’s water independence without increasing its energy consumption, because the system can be powered by low-grade waste heat that would otherwise be discarded. That “water plus resilience without extra power” is a double win for sustainability performance, and it can help reduce tensions with surrounding communities and unlock gridlocks in permitting.
What does that mean in practice?
• Less dependence on scarce local water
• Less need for costly water transport
• A step toward Water Positive commitments
• Pure OPEX savings, because the energy input comes from low-grade waste heat
There is another benefit of AWGs for data centers: As water is generated, the waste heat is simultaneously cooled. That provides a direct supplemental cooling impact within the thermal loop. This means that you are not only adding water from air, you are also improving thermal management. That is another OPEX lever for the AWG data center use case right there.
Atmospheric water harvesting, powered by low-grade waste heat from data centers enables:
• Lower operating costs
• Reduced thermal load on infrastructure
• Longer asset life
• Improved compliance positioning
So where does this leave data center operators? If water is becoming harder to secure, if communities are pushing back on potable water use, and if permitting is getting tighter, can “business as usual” really continue? Or is it time to add a new pillar to the water strategy?
An AWG data center approach, powered by next-generation Atmospheric water harvesting, gives operators a way to produce water from air on-site, strengthen resilience, and support low-humidity water generation in places like California, Nevada, and Texas. Atmospheric water generation based on nano-engineered reticular materials can move from a science-fiction-concept to a scalable solution that improves both sustainability and economics.
Want the full picture, including the data, scenario analysis, and what this means for cooling design and cost? Read our white paper: Sustainable AI in a Water-Scarce World