Join Low Voltage Nation — Find project opportunities and showcase your company to thousands of industry professionals
Google / Jupiter Star Project Tembo gives LVN a Cheyenne AI data-center watch lane with 3.08M sq ft, 2.7GW power-hub context, and open specialty packages.
Google / Jupiter Star Project Tembo is the cleanest AI data-center construction watch item in today's LVN queue. The Laramie County public notice and July 8 county memo confirm that the former Project Jade data-center submittal is now Project Tembo, that Crusoe Energy withdrew from the data-center portion, and that Laramie County has been working with Google doing business as Jupiter Star Holdings LLC on a re-submittal.
The memo matters because it gives source-backed construction facts instead of rumor. Laramie County says the revised project is scaled down from five buildings to four buildings and from 4,025,500 square feet to 3,080,000 square feet of building space. The same memo says peak construction workforce intensity is reduced from 5,000 to 2,500 and that Tallgrass Energy's associated natural-gas power hub has approvals with construction phases already well underway.
Local reporting from Cowboy State Daily adds the broader site picture: a 716-acre campus about eight miles south of Cheyenne in Switchgrass Industrial Park, four data-center halls, an office hub, logistics and network buildings, new access roads from U.S. 85, and a 2031 planned completion frame. Data Center Dynamics and Baxtel repeat the Google / Jupiter Star handoff and the 2.7GW campus context.
| Item | Source-backed detail | LVN read |
|---|---|---|
| Project | Google / Jupiter Star Project Tembo | AI data-center campus south of Cheyenne, Wyoming. |
| Stage | Re-submitted site plan / CUP process after prior Project Jade approvals | Active public-record watch with power work already moving. |
| Building area | 3,080,000 sq ft across four buildings in Laramie County memo | Large enough for multi-year specialty package tracking. |
| Power | 2.7GW campus / associated power-hub context in public and trade sources | Power capacity is not the same as disclosed building-level IT load. |
| Workforce | Peak construction workforce reduced to 2,500 in revised memo | Still a major safety, access, logistics, and documentation event. |
The most important contractor stance is restraint. Google / Jupiter Star is source-backed as the current data-center project party. Tallgrass Energy is source-backed for the associated BFC Power / Cheyenne Power Hub. POWER's January coverage of the approvals says the adjacent power hub included 2.7GW of new natural-gas-fired generation capacity and described a combined data-center and power-campus structure at Switchgrass Industrial Park. Reviewed public sources do not yet name the current GC/EPCM, engineer of record, electrical contractor, low-voltage contractor, fiber/OSP contractor, structured-cabling firm, security integrator, fire alarm contractor, BAS/BMS/EPMS controls vendor, DAS/networking firm, grounding contractor, commissioning agent, or tenant beyond Google/Jupiter Star's ownership/operator context.
That is exactly why it belongs in LVN Signal. Project Tembo is not a finished press-release story. It is a live construction intelligence lane where the public record has just changed hands from a Crusoe-branded Project Jade path to a Google / Jupiter Star path. For contractors, that shift can reset package timing, submittal names, prequalification channels, office/support scope, site access plans, and future bid visibility.
| Company / agency | Role | Evidence |
|---|---|---|
| Google / Jupiter Star Holdings LLC | Current data-center project party / owner-operator context | Laramie County memo and Cowboy State Daily |
| Laramie County | Site-plan, CUP, and public-notice authority | Project Tembo notice |
| Tallgrass Energy | Associated power-hub party | County memo and POWER approval coverage |
| Black Hills Energy | Local utility / energy-resource context | Cowboy State Daily application summary |
| Crusoe Energy | Former Project Jade data-center applicant / withdrawn party | Laramie County memo |
For low-voltage teams, the scope starts before data halls are fitted out. A four-building AI campus with office, logistics, network buildings, new access roads, onsite wastewater, power-hub coordination, and substation service creates pathway, fiber, security, fire alarm, controls, networking, grounding, commissioning, and documentation work across the site. The exact package holders are not public yet, but the systems to watch are predictable.
| System | Why it matters | Watch signal |
|---|---|---|
| Fiber / OSP | Diverse entrances, duct banks, carrier paths, MMR/network buildings, and long-haul coordination are core to a campus this size. | Telecom permits, network-building details, vaults, splice work, OTDR testing, carrier route announcements. |
| Structured cabling | Data halls, office hub, logistics spaces, security rooms, and facility networks need disciplined pathway and labeling. | Cable tray, rack/row pathways, copper/fiber certification, labeling, test reports, turnover packages. |
| Access control / CCTV | Rural campus access, U.S. 85 entrances, perimeter, gates, buildings, and equipment yards require layered security. | Gate controls, badging, VMS, cameras, perimeter detection, guardhouse/security entrance packages. |
| Fire alarm | Large mission-critical buildings need AHJ coordination, monitoring, suppression interfaces, and acceptance testing. | Fire alarm permits, FA submittals, inspections, monitoring, sequence testing. |
| BMS / EPMS | High-density power and mechanical systems need controls, alarms, trend logs, and power monitoring. | BAS/BMS, EPMS, SCADA, point lists, panels, network integration, commissioning reports. |
| Grounding / commissioning | Mission-critical closeout depends on bonding, test records, QA/QC, and clean documentation. | Grounding specs, prefunctional checks, commissioning agents, punch lists, redlines, as-builts. |
The jobs and skills angle is concrete even after the revised workforce reduction. A 2,500-person construction peak still means heavy site access control, safety orientation, lift work, contractor coordination, badging, documentation discipline, fiber cleanliness, testing competency, labeling discipline, fire alarm acceptance support, controls verification, and commissioning closeout. LVN should use this story to show techs why OSHA readiness, BICSI/FOA-style fiber and copper habits, grounding awareness, and documentation quality matter on AI infrastructure jobs.
The next watch items are specific: Laramie County project numbers PZ-26-00057 and PZ-26-00058, the August 13 Planning Commission hearing for the office-complex CUP, county site-plan revisions, Google/Jupiter Star public meetings, Tallgrass power-hub construction updates, Black Hills Energy/utility filings, Wyoming industrial-siting and environmental records, plan-room channels, job postings, and subcontractor portfolios. The first named specialty packages will likely surface through those routes, not through the broad national articles.
Alias control matters. Track Google Project Tembo, Project Tembo, former Project Jade, Jupiter Star Holdings LLC, Google Cheyenne data center, Switchgrass Industrial Park data center, Laramie County data center, BFC Power, Cheyenne Power Hub, Tallgrass Cheyenne, and U.S. 85 Cheyenne data center. Keep it distinct from Microsoft Cheyenne Highlands, Meta Cheyenne, Related Digital/CoreWeave Cheyenne, Vantage Cheyenne, Prometheus Evanston/Casper, and Site Layer 4 Wheatland.
Bottom line: Project Tembo belongs in LVN Signal because the public record now ties Google / Jupiter Star to a scaled but still enormous Cheyenne AI data-center campus, with 3.08 million square feet of building space, 2.7GW power-hub context, and a 2,500-person peak construction workforce. The public facts are strong. The specialty-package names are still open. That is the window where LVN Signal is useful.
Join 35,000+ Low Voltage Pros
Get weekly permit updates, tool deals, job opportunities, and industry news. No spam, unsubscribe anytime.