Black Pearl full 300 MW build in 2025
Company: Cipher Mining
What the later record shows
Partly delivered · happened September 30, 2025
Only 150 MW of Black Pearl was built and operating by September 2025, and Phase II was replanned. The site is now being built out as a 300 MW HPC facility for Amazon, with remaining phases still under construction in August 2026.
“New strategic plan at Black Pearl Phase II enables 150 MW of capacity designed to support both hydro BTC mining and HPC workloads”
2025-08-06 · cipher-mining 8-K exhibit (ciphermining_businessupd.htm) View cached copy (2026-10-08)Live source ↗
“We commenced mining bitcoin at the Black Pearl data center in June 2025 and ramped up to 150 MW of capacity by September 2025.”
2026-02-23 · Cipher Mining 10-K filed 2026-02-24 View cached copy (2026-08-31)Live source ↗
“Black Pearl data center continues to progress towards completion with remaining Phase I data halls moving through MEP fit-out”
2026-08-03 · cipher-mining 8-K exhibit (q226_earningsxprxdraftxvf.htm) View cached copy (2026-09-02)Live source ↗
Checked November 6, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Cipher accelerated its plans and decided to build the entire 300 MW Black Pearl data center in 2025.
Source (primary)
cipher-mining 8-K exhibit (cifr-ex99_1.htm) (SEC EDGAR (8-K Ex), press_release)
View cached copy (2026-11-06)Live source ↗
Quote: “we have decided to accelerate our plans and build the entire 300 MW data center in 2025”
How we checked this
This claim has not yet been checked assertion-by-assertion against its source. It carries a cited source and quote, but the deeper check has not run. When it does, the result appears here whatever it says.
Additional evidence
confirms cipher-mining 8-K exhibit (cifr-ex99_1.htm)
Quote: “we have decided to accelerate our plans and build the entire 300 MW data center in 2025”