Building 1 operational. This is estimated based on construction progress in October 2023. This also corresponds to a 2023 article where a Google spokesperson says that the "the Lancaster data center will open later this year".

Building 2 is close to completion. Structurally it is already complete, but there is still some equipment strewn around the building that suggests commissioning is ongoing.

Building 2 operational. This is supported by the state of Building 2 a month prior, which is entirely complete outside of some equipment that was removed later on.

At this point, Building 1 and 2 have since already been operational. Additionally, there is visible steam showing clear evidence of operational for both before this date.