The real footprint of a data center
Reusing components can extend service without eliminating every impact. Compare alternatives for the same useful work over the complete lifecycle.
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The ideas to retain
1. The comparison that calibrates the conversation
In the United States, data centers collectively withdraw about 449 million gallons of water per day, while golf courses withdraw approximately 2 billion ([MOST][r3]). Both volumes are far…
2. Water: withdrawal, consumption and the technology that determines it
The first distinction often omitted in discussions of data-center water is the difference between withdrawal and consumption. Withdrawal is the total volume taken from a source, whether an…
3. Energy: the AI premium and what it implies
Global data-center electricity consumption was around 415 TWh in 2024 and is projected to rise to about 945 TWh in 2030, or roughly 3 percent of world electricity consumption ([FAS][r13]).…
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00:00 — The same demand. Two different basins.
An aggregate volume does not describe a basin’s local pressure by itself.
The same withdrawal matters more when less water is available.
Compare location, period and competing uses, not just national totals.
Illustrative example; assumptions, not operational measurements.
00:22 — Water withdrawal is not water consumption.
Withdrawal is the water taken from a source into the system.
Some may evaporate; some may leave as blowdown requiring treatment.
Distinguish inputs, consumption and return before comparing facilities.
Illustrative example; assumptions, not operational measurements.
00:44 — A comparison needs the same denominator.
WUE relates water consumption to energy delivered to computing equipment.
For the same 1 MWh, 2 L/kWh means 2,000 litres; 0.2 L/kWh means 200.
These are facility examples, not a universal water cost per query.
Illustrative example; assumptions, not operational measurements.
01:08 — Higher efficiency need not mean lower total consumption.
PUE divides total facility energy by the energy used by IT equipment.
For 1 MWh of IT energy, lowering PUE from 2 to 1.2 reduces the total to 1.2 MWh.
If the IT load grows to 3 MWh, the same PUE gives 3.6 MWh in total.
Illustrative example; assumptions, not operational measurements.
01:32 — Hardware also has a material supply chain.
Chips, interconnects, batteries and supporting systems need different materials.
Extraction, refining and manufacturing add impacts outside the data center itself.
Launching the equipment does not remove that earlier supply chain.
01:54 — Changing location does not erase the footprint.
Count manufacturing, operation, repair, reuse and end of life.
Reusing components can extend service without eliminating every impact.
Compare alternatives for the same useful work over the complete lifecycle.
