Black Pearl 300 MW HPC capacity
Company: Cipher Mining - Project: Black Pearl Facility
What the later record shows
Partly delivered · happened July 31, 2026, new target March 31, 2027
The first subphase of capacity was delivered by July 31, 2026. Full rent ramp across all 300 MW is expected only by Q1 2027, after the final subphase.
“Rent for the lease is expected to fully ramp by the first quarter of 2027 upon completion of the final subphase.”
2026-02-23 · Cipher Mining 10-K filed 2026-02-24 View cached copy (2026-08-31)Live source ↗
“On July 24, 2026, we amended the HPC lease at the Black Pearl Facility, which accelerated delivery of the first capacity to July 31, 2026.”
2026-08-03 · Cipher Mining 10-Q filed 2026-08-04 View cached copy (2026-08-30)Live source ↗
Checked October 10, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Black Pearl data center with 300 MW gross capacity for HPC hosting
Source (primary)
cipher-mining 8-K exhibit (cipherdigital_businessup.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-09-13)Live source ↗
Quote: “300 MW Gross Capacity... 2026 Oct Lease Start Date”
How we checked this
Checked on October 3, 2026. The cited source supports every part of this claim.
The Black Pearl transaction overview lists 300 MW of gross capacity under the AWS HPC hosting lease, and the pipeline chart also shows Black Pearl at 300 MW.
Confirmed in the source:
- Black Pearl has 300 MW of gross capacity
- Black Pearl's capacity is contracted for HPC hosting
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1819989/000181998926000007/cipherdigital_businessup.htm) in full (25,132 characters, retrieved September 13, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms cipher-mining 8-K exhibit (cipherdigital_businessup.htm)
Quote: “300 MW Gross Capacity... 2026 Oct Lease Start Date”