Fluidstack Barber Lake Phase I lease
Company: Cipher Mining - Project: Barber Lake Facility
What the later record shows
The date slipped · new target March 31, 2027
Phase I was targeted for September 30, 2026. The 2026-09-24 8-K says data halls are now expected to be delivered between Q4 2026 and Q1 2027.
“an updated phased delivery schedule for the Barber Lake Facility, with individual data halls now expected to be delivered between the fourth quarter of 2026 and the first quarter of 2027”
2026-09-24 · Cipher Mining 8-K filed 2026-09-25 View cached copy (2026-09-26)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
244 MW of gross capacity allocated to Fluidstack for Barber Lake Phase I, targeting delivery by September 30, 2026.
Source (primary)
Cipher Mining 10-K filed 2026-02-24 (SEC EDGAR, sec_filing)
View cached copy (2026-08-31)Live source ↗
Quote: “244 MW of gross capacity will be allocated to Fluidstack in Barber Lake Phase I... Cipher Barber Lake is targeting delivery of Barber Lake Phase I by September 30, 2026”
How we checked this
Checked on October 11, 2026. The cited source supports every part of this claim.
The 10-K says 244 MW of gross capacity will be allocated to Fluidstack in Barber Lake Phase I. It also says delivery of Phase I is targeted by September 30, 2026. The two sentences are separated by other text, so the combined quote is not verbatim, but both facts appear in the document.
Confirmed in the source:
- 244 MW of gross capacity at the Barber Lake Facility will be allocated to Fluidstack in Barber Lake Phase I
- Barber Lake Phase I is targeted for delivery by September 30, 2026
What we did: Read our cached copy of SEC EDGAR (https://www.sec.gov/Archives/edgar/data/1819989/000181998926000009/cifr-20251231.htm) in full (477,779 characters, retrieved August 31, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Cipher Mining 10-K filed 2026-02-24
Quote: “244 MW of gross capacity will be allocated to Fluidstack in Barber Lake Phase I... Cipher Barber Lake is targeting delivery of Barber Lake Phase I by September 30, 2026”
delays Cipher Mining 8-K filed 2026-09-25
Quote: “an updated phased delivery schedule for the Barber Lake Facility, with individual data halls now expected to be delivered between the fourth quarter of 2026 and the first quarter of 2027”