Google Project Tembo (formerly Crusoe/Tallgrass AI Data Center)
Sponsors & Partners
Project Timeline
Current canonical record
716-acre campus in Switchgrass Industrial Park; four data center halls plus office hub. First phase 1.8 GW; 2.7 GW configuration, scalable to 10,000 MW (10 GW). Will use 5x more electricity than all Wyoming homes combined at full scale.
Laramie County's July 8, 2026 memo says the data center previously known as Project Jade is now Project Tembo, Crusoe Energy has withdrawn, and county representatives have held re-submittal discussions with Google doing business as Jupiter Star Holdings, LLC. The revised submittal scales the project from five buildings and 4,025,500 sq ft to four buildings and 3,080,000 sq ft, reduces peak workforce from 5,000 to 2,500, and includes an associated office-complex CUP. Data Center Dynamics reported on July 14, 2026 that Google is the customer behind the 2.7 GW campus on a 716-acre parcel in Switchgrass Industrial Park, with four data halls and completion slated by 2031; earlier Black Hills filings still describe a 1.8 GW utility service project, so notes should preserve both the utility-service framing and the newer 2.7 GW campus description.
Google is the confirmed owner behind Wyoming’s largest data center build. A June 30, 2026 site-plan amendment filed with Laramie County — not a company announcement — revealed that Google, acting through subsidiary Jupiter Star Holdings, LLC, owns and will operate the campus formerly known as Project Jade, now renamed Project Tembo. At full scale it would use roughly five times more electricity than all homes in Wyoming combined.
Key Metrics
| Metric | Value |
|---|---|
| Investment | $50B (reported project scale) |
| Power Capacity | 2.7 GW (first phase 1.8 GW; scalable to 10 GW) |
| Campus | 716 acres, Switchgrass Industrial Park |
| Location | Cheyenne, Laramie County, Wyoming |
| Region | Southeast Wyoming |
| Status | Under Construction |
| Planned Completion | 2031 |
Stakeholders
Owner / Operator
- Google (via subsidiary Jupiter Star Holdings, LLC) — disclosed June 30, 2026
Power & Infrastructure Partners
- Tallgrass Energy (dedicated generation, Cheyenne Power Hub)
- Black Hills Energy (grid capacity, 230 kV substation, Large Power Contract Service Tariff)
Former Developer
- Crusoe Energy Systems (replaced as builder/operator by Jupiter Star Holdings in June 2026; construction continued through the transition)
Purpose
This project is designed for:
- AI / ML
- Hyperscale
Power Sourcing
Tallgrass Energy blends Black Hills Energy grid capacity, fuel cells, and its own generation, delivered to the campus through a dedicated substation. Despite earlier “bring-your-own-power” positioning, the project is grid-tied rather than fully off-grid. Site plans describe on-site wastewater treatment with evaporative lagoon storage after a connection to Cheyenne’s municipal system was deemed not cost-effective.
Campus
The 716-acre campus, about 8 miles south of Cheyenne on land formerly used for seasonal cattle grazing, includes four data center halls, an office hub, logistics and network buildings, and new access roads off U.S. 85. A further 32.83-acre office support parcel entered permitting in July 2026, with a Laramie County Commission hearing set for August 13, 2026.
Timeline
| Milestone | Date |
|---|---|
| Announced (Crusoe/Tallgrass, 1.8 GW scalable to 10 GW) | 2025-07-24 |
| Laramie County site-plan approval (Project Jade) | 2026-01-06 |
| Crusoe replaced by Google subsidiary Jupiter Star Holdings | 2026-06 |
| Google ownership revealed via county site-plan amendment | 2026-06-30 |
| Office support parcel hearing | 2026-08-13 |
| First-phase utility service target (Black Hills) | Early 2028 |
| Planned completion | 2031 |
Phases
- Phase 1: Initial 1.8 GW capacity (first service targeted early 2028)
- Full campus: 2.7 GW configuration by 2031
- Long-term: Scalable to 10 GW
Record provenance
This page is generated from the reviewed project database snapshot. The record was last reviewed on 2026-07-18. Blank fields mean the value was not publicly disclosed or could not be reconciled safely; they do not mean zero.
Former and alternate names
- Crusoe/Tallgrass AI Data Center (Project Jade)
- Google Project Tembo (formerly Crusoe/Tallgrass Project Jade)
- Project Jade
- Project Tembo