Lake Mariner CB4 building energization
Company: TeraWulf - Project: Lake Mariner Anthropic AI Factory
What the later record shows
The date slipped · new target December 31, 2026
The July 2026 lease amendment shifted CB-4 from Q3'26 to Q3-Q4'26, and the Q2 deck still lists CB-4 (168 MW) as under construction for 2H26. No passage reports CB-4 energized.
“CB - 4 Q3’26 Q3 – Q4’26 CB - 5 Q4’26 Q1’27 +6 MW of Critical IT & Monthly TFO Rent Increase”
2026-08-04 · Q2 2026 Earnings Update Presentation View cached copy (2026-09-01)Live source ↗Archive.org ↗
“UNDER CONSTRUCTION 737 MW ➢ CB - 4 (168 MW, 2H26) ➢ CB - 5 (168 MW, Q127)”
2026-08-04 · Q2 2026 Earnings Update Presentation View cached copy (2026-09-01)Live source ↗Archive.org ↗
Checked October 9, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
CB4 building phase (168 MW) energization expected Q3 2026
Source (primary)
terawulf 8-K exhibit (a_wulfearningsrelease2026-.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-09-13)Live source ↗
Quote: “CB4 (168 MW) – Energization expected Q3 2026”
How we checked this
Checked on October 11, 2026. The cited source supports every part of this claim.
The construction status table lists CB4 at 168 MW with energization expected in Q3 2026.
Confirmed in the source:
- Lake Mariner's CB4 building is 168 critical IT MW
- CB4 energization was expected in Q3 2026
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1083301/000108330126000026/a_wulfearningsrelease2026-.htm) in full (26,590 characters, retrieved September 13, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms terawulf 8-K exhibit (a_wulfearningsrelease2026-.htm)
Quote: “CB4 (168 MW) – Energization expected Q3 2026”
delays Q2 2026 Earnings Update Presentation
Quote: “CB - 4 Q3’26 Q3 – Q4’26 CB - 5 Q4’26 Q1’27 +6 MW of Critical IT & Monthly TFO Rent Increase”