It's crazy that these are done in secret. From the article: "The operator of the data center hasn't been identified" -- that's shouldn't be allowed.

It's not possible to identify operators who do not wish to be identified. The land is purchased by an LLC, developed by another LLC, and then sold to a third LLC for buildout. Once it's up and running it could be rented to a fourth LLC who has contracted with the actual client, or the client could just buy the involved LLCs (usually via another LLC).