Cipher Mining signs $5.5B AWS 15-year AI data center lease

Cipher Mining announced two major corporate developments: a ~ $5.5 billion, 15-year campus lease with Amazon Web Services for AI hosting and majority ownership in a joint venture to develop a 1-GW HPC site in West Texas (Colchis).

• Main announcement — AWS lease and AI capacity: Cipher executed an approximately $5.5 billion, 15-year lease with Amazon Web Services to provide turnkey space and power for AI workloads, committing to 300 MW of capacity in 2026 delivered in two phases (expected to begin July 2026 and complete in Q4 2026) with rent commencing August 2026; the company also states AI hosting contracts represent ~ $8.5 billion in lease payments.
• Background and additional details: Cipher secured ~95% ownership in a joint venture to develop a 1-GW site called Colchis in West Texas, including a fully executed 1-GW Direct Connect Agreement with American Electric Power (AEP) (AEP to build dual interconnection facility targeting energization in 2028 while ERCOT completes final review); Cipher also completed a $1.3 billion convertible note offering and reports Q3 2025 revenue of $72 million and Non-GAAP Adjusted Earnings of $41 million.