WATER USE, EXPLAINED

Water use is determined largely by cooling design

The cooling method is chosen during a facility’s engineering and development. Some systems consume water continuously; others recirculate it or use air instead.

COOLING DESIGN

Closed-loop systems recirculate cooling fluid

Computing equipment generates heat, so every data center needs a reliable way to remove it. In a closed-loop system the same fluid is circulated, with only limited makeup water required as needed for operations.

Riot does not use evaporative cooling.

Riot uses air-cooled and closed-loop systems that recirculate cooling fluid instead of evaporating water to remove heat.

+ Relative water use by cooling method

Evaporative cooling

High

Closed-loop liquid

Low

Air-cooled

Minimal

BY SITE

How water is used at our Texas campuses

Rockdale

Industrial water use from Alcoa Lake

Water associated with our operations is actively monitored and tested, with treated water returned in accordance with applicable requirements. Riot does not draw from water supplies used by the surrounding community for household needs.

Corsicana

<2%
of city daily use today
0.25%
expected as cooling shifts

As the site transitions toward data center operations and incorporates more water-efficient cooling systems, Riot expects that percentage to decrease significantly.

MYTH AND FACT

Myth

“Data centers drain the local water supply.”

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Fact

Water use depends heavily on how a data center is designed and cooled. Riot is incorporating air-cooled and closed-loop cooling systems that significantly reduce the need for ongoing water consumption for cooling. At Corsicana, current water usage represents less than 2% of the city’s total daily water usage, expected to decrease to approximately 0.25% as the campus transitions further toward data center operations.

Source: site water permits, city usage data

COMMON QUESTION

Does the facility use the same water my household does?

At Rockdale, Riot uses water from Alcoa Lake for industrial purposes and does not draw from supplies used by the surrounding community for household needs. Closed-loop cooling recirculates fluid rather than continuously consuming fresh water.

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