Similarly, the tech oligarchs claim that they will use closed loop cooling systems - but those are more expensive, so they refuse to put this promise in writing, just as they refuse to put their empty promises to pay for electric grid upgrades at their own expense into writing when worming their way into rural communities. When they set up shop, you can bet that they'll use the cheaper option and continue to suck up water. It's like their empty claims of job creation in communities - when in fact they bring in their own people and create zero jobs except in the short term for local contractors.
Actually the tech oligarchs do, in fact, pay for the grid upgrades.
As a practical matter, the data centers seldom take power except when their own power goes down for whatever reason.
I own a company that makes giant vessels. Traditionally we make them for oil and gas but they work for cooling systems.
They are building their own gas turbine power plants that reinforce the grid.