Core42 Lake Mariner

Land clearing begins for Building 1, also known as CB-1, the first large AI/HPC building on the site.

Building 1 is operational. Based on Terawulf [saying](https://investors.terawulf.com/news-events/press-releases/detail/126/terawulf-reports-third-quarter-2025-results) "As of September 30, 2025, the site has energized 245 MW of Bitcoin-mining capacity and 22.5 MW of HPC capacity." The small "Wulf Den" building was [said](https://investors.terawulf.com/news-events/press-releases/detail/99/terawulf-to-deliver-over-70-mw-of-data-center) to be 2 MW of IT power while CB-1 would be 16 MW. This is roughly consistent with 22.5 MW of total facility power. This building is [leased](https://investors.terawulf.com/news-events/press-releases/detail/99/terawulf-to-deliver-over-70-mw-of-data-center) to Core42, a subsidiary of UAE-based G42. It likely uses NVIDIA DGX B200 servers.

Buildings 1 and 2 both appear to have complete building and cooling equipment, based on satellite imagery. Not considering Building 2 operational yet, due to Terawulf's [statement](https://investors.terawulf.com/news-events/press-releases/detail/132/terawulf-reports-fourth-quarter-and-full-year-2025-results) that CB2B is expected in March 2026, and is likely still in commissioning phase.

Building 2 is operational. On February 26, Terawulf [stated](https://investors.terawulf.com/news-events/press-releases/detail/132/terawulf-reports-fourth-quarter-and-full-year-2025-results) that CB2A is operational, presumably making up half the final capacity. CB2B was expected in March 2026. However, it's notable that a drone video commissioned from [RAAD](https://raad.com/) showed no cooling fan movement on May 8th, suggesting it was not in use. This building is [leased](https://investors.terawulf.com/news-events/press-releases/detail/99/terawulf-to-deliver-over-70-mw-of-data-center) to Core42, a subsidiary of UAE-based G42. It likely uses NVIDIA DGX B200 servers.

Both buildings still operational according to satellite imagery.