15-year AWS data center lease
Company: Cipher Mining
What the later record shows
The date slipped · new target October 1, 2026
The original plan was for delivery to begin in July 2026 and rent to start in August 2026. By February 2026, initial rent was targeted for October 1, 2026, and by June 2026 initial capacity delivery was targeted for September 2026.
“216 MW Critical IT load under contract to be delivered in five subphases with initial rent targeted to begin October 1, 2026”
2026-02-02 · cipher-mining 8-K exhibit (dp240991_ex9901.htm) View cached copy (2026-09-20)Live source ↗
“Black Pearl and Barber Lake construction projects are both on schedule and tracking towards delivery of the initial capacity in September 2026”
2026-06-07 · cipher-mining 8-K exhibit (dp248110_ex9901.htm) View cached copy (2026-09-06)Live source ↗
Checked November 10, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Executed a 15-year data center campus lease with Amazon Web Services to provide 300 MW gross capacity (including both air and liquid cooling) for AI workloads, with estimated contract value of $5.5 billion. Capacity to be delivered in two phases beginning July 2026 and completing Q4 2026, with rent commencing August 2026.
Source (primary)
cipher-mining 8-K exhibit (ciphermining_businessupd.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-09-27)Live source ↗
Quote: “Executed 15-Year Data Center Campus Lease with Amazon Web Services to Support AI Workloads • 15-year lease agreement with Amazon Web Services will provide turnkey space, and power for AI workloads • Cipher will deliver 300 MW of gross capacity in 2026, including both air and liquid cooling to the racks • The capacity will be delivered in two phases beginning in July 2026 and completing in Q4 2026, with rent commencing in August 2026... 300 MW Gross Capacity ~$5.5Bn Estimated Contract Value”
How we checked this
Checked on November 11, 2026. The cited source supports every part of this claim.
The business update presentation states each element of this claim: the 15-year AWS lease for AI workloads, 300 MW of gross capacity with air and liquid cooling, an estimated contract value of about $5.5 billion, two-phase delivery from July 2026 through Q4 2026, and rent starting in August 2026. The source gives the contract value as approximate (~$5.5Bn).
Confirmed in the source:
- Cipher executed a 15-year data center campus lease with Amazon Web Services
- The lease is to support AI workloads
- Cipher will deliver 300 MW of gross capacity under the lease
- The capacity includes both air and liquid cooling to the racks
- The estimated contract value is approximately $5.5 billion
- The capacity will be delivered in two phases beginning in July 2026 and completing in Q4 2026
- Rent commences in August 2026
What we did: Read our cached copy of SEC EDGAR (8-K Ex) (https://www.sec.gov/Archives/edgar/data/1819989/000181998925000110/ciphermining_businessupd.htm) in full (21,477 characters, retrieved September 27, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms cipher-mining 8-K exhibit (ciphermining_businessupd.htm)
Quote: “Executed 15-Year Data Center Campus Lease with Amazon Web Services to Support AI Workloads • 15-year lease agreement with Amazon Web Services will provide turnkey space, and power for AI workloads • Cipher will deliver 300 MW of gross capacity in 2026, including both air and liquid cooling to the racks • The capacity will be delivered in two phases beginning in July 2026 and completing in Q4 2026, with rent commencing in August 2026... 300 MW Gross Capacity ~$5.5Bn Estimated Contract Value”
delays cipher-mining 8-K exhibit (dp248110_ex9901.htm)
Quote: “Black Pearl and Barber Lake construction projects are both on schedule and tracking towards delivery of the initial capacity in September 2026”
delays cipher-mining 8-K exhibit (dp240991_ex9901.htm)
Quote: “216 MW Critical IT load under contract to be delivered in five subphases with initial rent targeted to begin October 1, 2026”