# TeraWulf completes CB-3 for Fluidstack, bringing Lake Mariner to 102 MW; CB-5 moves to early 2027

Canonical page: https://technooptimist.io/stories/terawulf-completes-cb-3-for-fluidstack-bringing-lake-mariner-to-102-mw-1d62369d
Date: 5 Aug 2026
About: [Fluidstack](https://technooptimist.io/companies/fluidstack.md) · [Fluidstack AI cloud](https://technooptimist.io/computing/fluidstack-ai-cloud.md)
Original source: https://www.stocktitan.net/news/WULF/tera-wulf-reports-second-quarter-2026-xroiqofrgahk.html

TeraWulf finished delivering the CB-3 building in early July 2026, lifting revenue-generating capacity at Lake Mariner to 102 MW and activating $600M of Google's credit support for Fluidstack's lease. CB-4 and CB-5 add 336 MW more.

## Key facts

- First CB-4 data hall in commissioning; rent expected to start in H2 2026.
- CB-5 phased delivery now targeted for early 2027, after an earlier H2 2026 target.

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