Cryptomine firm turned data center developer TeraWulf has topped out its latest building in New York.

“Today we topped out CB4, marking the final structural beam placed - all thanks to the crews who brought this build to life,” the company announced on LinkedIn this week. “What stands above is more than steel. It’s execution, coordination, and a shared commitment to delivering critical infrastructure at scale.”

CB-4, located at the company’s Lake Mariner campus in New York, will offer 168MW of capacity, with energization expected in Q3 2026.

Six buildings are currently planned, with three – Wulf Den (2MW), CB1 (16MW), and the first phase of CB2 (42MW) – live. The second phase of CB2, as well as CB3 (42MW), CB4, and CB5 (168MW), are expected to be energized this year.

Located on the site of a former coal plant outside Buffalo and originally developed for cryptomining, TeraWulf has been pivoting the Lake Mariner campus towards AI and HPC leasing. The site currently has 500MW of capacity, expandable to 750MW. Core42, a subsidiary of Abu Dhabi-based tech group G42, is a customer of the campus.

The company has also signed multiple deals with AI cloud firm Fluidstack that are backed by Google. Fluidstack plans to lease 360MW of critical IT load from TeraWulf's Lake Marinercampus, in two 10-year deals backed by Google. Google also took a 14 percent stake in TeraWulf across those two deals.

TeraWulf is also developing sites in Texas, Maryland, and Kentucky, and is planning a second development in New York.