Data Center Registry

TerraVolt Southeast Idaho Data Center Campus (Raft River)

Cassia County, Idaho

ProposedNo reception on recordRecord updated October 4, 2026

TerraVolt Southeast Idaho Data Center Campus (Raft River) is a proposed data center in Idaho (Cassia County), operated by TerraVolt Infrastructure, Inc. (subsidiary of CalEthos, Inc.). The public record puts it at announced March 16, 2026.

Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.

Facility record

Proposed

Operator: TerraVolt Infrastructure, Inc. (subsidiary of CalEthos, Inc.)
Facility type: Data center
Location: Cassia County, ID
Coordinates: 42.5971, -113.2361 (approximate)
Power capacity: Not established from a public source
Land: Not established from a public source
Investment: Not established from a public source
Announced: March 16, 2026
Utility: Not established from a public source
Power source: On site gas
Cooling: Not established from a public source
Water use: Not established from a public source
Jobs: Not established from a public source
Public subsidy: Not established from a public source
Community reception: No reception on record
Source confidence: Reported by at least one credible outlet or filing

Timeline from the record

Newest first. Record entries come from the filings and reports the registry cites. Coverage entries are headlines from publisher feeds we monitor daily, linked to the outlet; last checked September 14, 2026.

May 11, 2026
Proposed
CalEthos/TerraVolt signed a firm natural gas supply agreement (55,000 MMBtu/day) for a behind-the-meter on-site power plant at the planned Southeast Idaho campus. The initial phase targets 200-240 MW for data center customers. Source: CalEthos, Inc. (SEC EDGAR)
March 16, 2026
Proposed
Idaho legislators told BoiseDev that Terra Volt Infrastructure Inc (Tustin, CA) was in talks to develop a master-planned data center campus in Raft River, between Twin Falls and Pocatello. No application was on file. Source: BoiseDev (via Internet Archive)

Opposition and litigation at this site

Nothing on record as of October 4, 2026. No lawsuit, organized opposition, or contested hearing over TerraVolt Southeast Idaho Data Center Campus (Raft River) in Cassia County, Idaho appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

If you live near this site and something is happening that this page does not show, that is worth telling us. Send us the document and it goes in the record with the source attached. For sites where opposition is already established, see every contested site we track.

Power and water

Behind-the-meter natural gas plant on the Northwest Pipeline, with firm supply of 55,000 MMBtu/day. The initial phase is described as 200-240 MW of power for data center customers; that is a power-plant target, not a measured IT load. The 10-Q (period ended 2026-03-31) reports a $3,832,500 gas reservation fee and a letter of credit of up to $6,000,000. It also says power-plant design and environmental documents were to be submitted to state agencies by mid-2026.

Notes on the record

Location: the SEC filings say only 'Southeast Idaho on the Northwest Natural Gas Pipeline'. The Raft River siting comes from Idaho legislators quoted by BoiseDev (March 2026); the governor's office referred BoiseDev's questions to Cassia County's economic development agency. The pin is the OpenStreetMap 'Raft River' locality node near I-84/I-86 in Cassia County. It is a representative point only; no parcel has been disclosed. According to the 10-Q, TerraVolt has only a preliminary joint-venture agreement with a landowner. It expects land-use and conditional zone-change approvals by year-end 2026 and construction approvals in Q2 2027. the capacity figure is omitted because the only stated figure is a 200-240 MW range for the power plant. This is unrelated to the separate CalEthos Lithium Valley record in California.

What the record does not establish, and the document that would

In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.

Power capacity in megawatts
Cooling method and water use
Tax abatements or other public subsidy
Permanent jobs promised
Land area
How the community has received it
Which utility serves it

Which document closes each gap

Power capacity in megawatts: The utility's large load service agreement, the interconnection request in the grid operator's queue, or the electrical site plan in the permit file.
Cooling method and water use: The water service agreement, any groundwater appropriation permit, and the mechanical narrative in the site plan.
Tax abatements or other public subsidy: The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.
Permanent jobs promised: The economic development application or incentive agreement, which usually states a job commitment and a clawback.
Land area: The rezoning application, the plat, or the deed recorded with the county.
How the community has received it: Planning commission and governing body minutes, public comment records, and any petition or lawsuit filed in the county.
Which utility serves it: The electric service agreement or the utility's filing with the state public utility commission.

Have one of these documents? Send it to us and we will add it to the record with attribution.

Tell us about your situation

Living near TerraVolt Southeast Idaho Data Center Campus (Raft River)?

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Questions people ask about this site

Is there opposition to the TerraVolt Southeast Idaho Data Center Campus (Raft River) in Cassia County, Idaho?

Has anyone filed a lawsuit over the TerraVolt Southeast Idaho Data Center Campus (Raft River)?

No lawsuit over TerraVolt Southeast Idaho Data Center Campus (Raft River) appears in the record we track as of October 4, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.

How much water does TerraVolt Southeast Idaho Data Center Campus (Raft River) use?

No water withdrawal figure for TerraVolt Southeast Idaho Data Center Campus (Raft River) is on record here. Water use is rarely published voluntarily; it usually surfaces through a utility service agreement or a state withdrawal permit, both of which are public records. We leave the number blank rather than estimate one.

Who operates TerraVolt Southeast Idaho Data Center Campus (Raft River), and how big is it?

TerraVolt Infrastructure, Inc. (subsidiary of CalEthos, Inc.) is the operator on record. No capacity figure is on record for this site.

How to cite this page

SueDataCenters.org Data Center Registry, "TerraVolt Southeast Idaho Data Center Campus (Raft River)," updated October 4, 2026, https://suedatacenters.org/data-centers/terravolt-raft-river-cassia-county-id.

Facility data from Compute Atlas (E. Kubiak), version 1.34.1 (October 4, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/terravolt-raft-river-cassia-county-id, retrieved October 11, 2026.

Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.

Sources for this record

As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.

1.Data center campus possible in Magic Valley as tax cuts continue (archived) · BoiseDev (via Internet Archive) · retrieved October 4, 2026
2.CalEthos, Inc. Form 8-K Exhibit 99.1: TerraVolt natural gas supply agreement for planned Southeast Idaho data center campus (May 11, 2026) · CalEthos, Inc. (SEC EDGAR) · retrieved October 4, 2026
3.CalEthos, Inc. Form 10-Q for the period ended March 31, 2026 · CalEthos, Inc. (SEC EDGAR) · retrieved October 4, 2026
4.OpenStreetMap Nominatim: Raft River locality, Cassia County (node 150941672) · OpenStreetMap · retrieved October 4, 2026

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