Compute Institute
Ratings for the physical buildout of AI
xAI Colossus 2 (Memphis)

xAI Colossus 2 (Memphis)

Operating
Confirmed

Jurisdiction: US — Rest of US (composite)

Whitehaven district, Memphis, Tennessee (Tulane Road site, coordinates approximate); supplemental gas-turbine generation across the state line in Southaven, Mississippi

Capacity
1,000 MW basis: facility total
GPUs (est.)
Capex
Announced
Target operational

Delivery health score

82 /100
82/100

Methodology prs-v0.1 · computed · trigger: manual

Schedule

85 /100
85/100

Regulatory

70 /100
70/100

Infrastructure

85 /100
85/100

Capital

70 /100
70/100

Why this score — factor breakdown

Each factor below contributed to the current score. Contributions are rubric weights from methodology prs-v0.1; every factor cites the record it is derived from.

Dimension
Factor
Contribution
Cites
Narrative
Capital baseline 40 xAI Colossus 2 (Memphis) Capital base before committed-capital evidence (announcement-only anchor region, §B.2.4).
Capital capital commitment +30 Nvidia (investor) investor role committed $2,000,000,000 (capex undisclosed — coverage unverifiable).
Infrastructure baseline 70 xAI Colossus 2 (Memphis) No-adverse-evidence infrastructure baseline (disclosed config, scoring.prs.baselines).
Infrastructure interconnection progress +15 Energization Power/interconnection milestone "Energization" achieved on 2026-01-01 — largest single health event (§B.2.3).
Regulatory baseline 70 xAI Colossus 2 (Memphis) No-adverse-evidence regulatory baseline (disclosed config, scoring.prs.baselines).
Schedule baseline 80 xAI Colossus 2 (Memphis) No-adverse-evidence schedule baseline (disclosed config, scoring.prs.baselines).
Schedule milestone achieved +5 Energization Milestone "Energization" achieved on/ahead of its first announced date (2026-01-01).

Milestones

  1. Energization

    Achieved

    Energization · Actual:

  2. Energization

    Expected
    1 revision

    Energization · Expected:

  3. Energization

    Expected
    1 revision

    Energization · Expected:

Constraint observations

No active constraint observations recorded against this project.

Entities & roles

Entity
Role
Ownership
Committed capital
xAI
Operator
xAI
Owner
Solaris Energy Infrastructure
Power Supplier
Solaris Energy Infrastructure
Utility Provider
MGX
Investor
Valor Equity Partners
Investor
Nvidia
Investor
$2.0B
Qatar Investment Authority
Investor

Sources & citations

Every substantive field on this record is backed by a canonical claim from a cited source document, graded on the E1 (strongest) – E5 (weakest) evidence ladder.

  1. Introl · Jan 1, 2026 · backs: actual date, capacity mw, expected date, status

    https://introl.com/blog/xai-colossus-2-gigawatt-expansion-555k-gpus-january-2026

  2. SemiAnalysis · backs: expected date

    https://newsletter.semianalysis.com/p/xais-colossus-2-first-gigawatt-datacenter

Signals

Recent ingested source documents linked to this project via extracted claims or triage mentions, newest first.

  1. · Introl · relevance 0.95

  2. · Roic News (via The Information) · relevance 0.70

  3. · Tom's Hardware · relevance 0.90

  4. SemiAnalysis · relevance 0.90

  5. Global Energy Monitor · relevance 0.00