{
  "as_of": "2026-10-26",
  "ledger_rows_total": 45,
  "ledger_by_status": {
    "delivered": 2,
    "slipped": 13,
    "pending": 28,
    "cancelled": 1,
    "dropped": 1
  },
  "shown": 12,
  "scope": "Public teaser subset. The complete promise history is planned for the Control Room. Rows are never deleted; outcomes are appended.",
  "rows": [
    {
      "id": "uamps-nuscale-carbon-free-power-project",
      "promisor": "UAMPS / NuScale",
      "promise": "Carbon Free Power Project, 462 MWe",
      "made": "2020s · UAMPS subscription",
      "target": "Terminated Nov 8, 2023",
      "status": "cancelled",
      "slippage": "Cost 1.53× ($58 → $89/MWh target price)",
      "grade": "A",
      "outcome": "Terminated for lack of subscription",
      "sources": [
        {
          "label": "NuScale PR",
          "url": "https://www.nuscalepower.com/press-releases/2023/utah-associated-municipal-power-systems-and-nuscale-power-agree-to-terminate-the-carbon-free-power-project"
        },
        {
          "label": "NuScale 8-K",
          "url": "https://www.sec.gov/Archives/edgar/data/1822966/000182296623000256/smr-20231108.htm"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "constellation-amazon-amazon-data-center-campus",
      "promisor": "Constellation / Amazon",
      "promise": "Amazon data center campus on the Calvert Cliffs site",
      "made": "Earlier proposal (date not captured)",
      "target": "—",
      "status": "dropped",
      "slippage": "Replaced by a 690 MW grid PPA (Sep 30, 2026)",
      "grade": "D",
      "outcome": "Amazon withdrew the on-site campus",
      "sources": [
        {
          "label": "Data Center Frontier",
          "url": "https://www.datacenterfrontier.com/energy/article/55410654/big-techs-next-nuclear-bet-more-power-from-reactors-already-running"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "terrapower-natrium-kemmerer-unit-1",
      "promisor": "TerraPower",
      "promise": "Natrium Kemmerer Unit 1 operating (345 MWe)",
      "made": "2021 · ARDP launch",
      "target": "2028 → 2031 (grid)",
      "status": "slipped",
      "slippage": "~36 months (HALEU delay disclosed Dec 2022)",
      "grade": "A",
      "outcome": "CP issued Mar 9, 2026; nuclear construction began Apr 23, 2026; fuel load 2030",
      "sources": [
        {
          "label": "FR 2026-05067",
          "url": "https://www.federalregister.gov/documents/2026/03/16/2026-05067"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "holtec-return-palisades",
      "promisor": "Holtec",
      "promise": "Return Palisades (805 MW) to service",
      "made": "2023–24 · company statements",
      "target": "Q4 2025 → no new date",
      "status": "slipped",
      "slippage": "≥10 months, no new grid date",
      "grade": "A",
      "outcome": "Fuel load began Aug 30, 2026; assembly DD41 tilted; recovered Oct 21. Co-op power sales due by Mar 1, 2027",
      "sources": [
        {
          "label": "FR 2026-21594",
          "url": "https://www.federalregister.gov/documents/2026/10/22/2026-21594"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "oklo-first-aurora-powerhouse",
      "promisor": "Oklo",
      "promise": "First Aurora powerhouse at INL operating",
      "made": "2024 · investor materials",
      "target": "2027 → 2028",
      "status": "slipped",
      "slippage": "~12 months",
      "grade": "A",
      "outcome": "DOE approved the PDSA Jun 2026. NRC denied the original COLA Jan 6, 2022",
      "sources": [
        {
          "label": "Oklo 10-K",
          "url": "https://www.sec.gov/Archives/edgar/data/1849056/000162828026018698/oklo-20251231.htm"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "tva-clinch-river-bwrx-300",
      "promisor": "TVA",
      "promise": "Clinch River BWRX-300 commercial operation",
      "made": "2024–25 · press reports (D)",
      "target": "2032 → Dec 2033",
      "status": "slipped",
      "slippage": "~12–23 months (earlier date grade D)",
      "grade": "A",
      "outcome": "CP issued Sep 28, 2026",
      "sources": [
        {
          "label": "TVA",
          "url": "https://tva.com/energy/our-power-system/nuclear/clinch-river-small-modular-reactor"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "helion-microsoft-electricity-from-orion",
      "promisor": "Helion / Microsoft",
      "promise": "Electricity from Orion fusion plant (50 MW)",
      "made": "May 2023 · Microsoft PPA release",
      "target": "2028 → ≥2029–30",
      "status": "slipped",
      "slippage": "≥12–24 months",
      "grade": "D",
      "outcome": "2028 electricity promise withdrawn (Axios, Sep 28, 2026)",
      "sources": [
        {
          "label": "Axios",
          "url": "https://www.axios.com/local/seattle/2026/09/28/helion-energy-orion-fusion-microsoft-commercial-power-altman"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "radiant-pilot-selectee-kaleidos-critical",
      "promisor": "Radiant (pilot selectee)",
      "promise": "Kaleidos critical in INL's DOME (Jul 4, then Q3 2026)",
      "made": "Aug 2025 · DOE pilot selection",
      "target": "Jul 4, 2026 → Q3 2026",
      "status": "slipped",
      "slippage": "≥4 months; Q3 2026 also passed",
      "grade": "B",
      "outcome": "No confirmed criticality. INL reported a first DOME test complete Sep 30 (scope not stated)",
      "sources": [
        {
          "label": "DOE pilot page",
          "url": "https://www.energy.gov/ne/us-department-energy-reactor-pilot-program"
        },
        {
          "label": "DOE fact sheet",
          "url": "https://www.energy.gov/articles/fact-sheet-golden-era-american-nuclear-energy-has-arrived"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "state-of-texas-taneo-first-awards",
      "promisor": "State of Texas (TANEO)",
      "promise": "First awards from the $350M Texas Advanced Nuclear Development Fund",
      "made": "2025–26 · TANEO program page",
      "target": "Award period from Sep 14, 2026",
      "status": "slipped",
      "slippage": "≥1 month; no awards as of Oct 3",
      "grade": "B",
      "outcome": "No awards announced",
      "sources": [
        {
          "label": "TANEO",
          "url": "https://gov.texas.gov/taneo/page/tandf"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "doe-reactor-pilot-program-at-least-3-test-reactors",
      "promisor": "DOE (Reactor Pilot Program)",
      "promise": "At least 3 test reactors critical by Jul 4, 2026",
      "made": "Aug 2025 · DOE selection release",
      "target": "Jul 4, 2026",
      "status": "delivered",
      "slippage": "0 (met; 4 reached criticality)",
      "grade": "B",
      "outcome": "Antares Mark-0 Jun 4 (INL), Valar Ward 250 Jun 18 (Utah), Deployable Unity Jun 30, Aalo-X Jul 4 (INL). Zero-power criticality, not electricity",
      "sources": [
        {
          "label": "DOE pilot page",
          "url": "https://www.energy.gov/ne/us-department-energy-reactor-pilot-program"
        },
        {
          "label": "DOE, 4th criticality",
          "url": "https://www.energy.gov/articles/department-energy-celebrates-fourth-criticality-ahead-july-4th-goal"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "centrus-doe-900-kg-haleu",
      "promisor": "Centrus / DOE",
      "promise": "900 kg HALEU delivered to DOE (Phase 2)",
      "made": "DOE HALEU contract",
      "target": "2026",
      "status": "delivered",
      "slippage": "0",
      "grade": "A",
      "outcome": "Final 900 kg delivered mid-Jun 2026; more than 1,900 kg cumulative",
      "sources": [
        {
          "label": "Centrus 8-K ex99.1",
          "url": "https://www.sec.gov/Archives/edgar/data/1065059/000162828026046801/ex991_haleu900mpr.htm"
        }
      ],
      "as_of": "Oct 23, 2026"
    },
    {
      "id": "antares-mark-1-microreactor",
      "promisor": "Antares",
      "promise": "Mark-1 microreactor at full electrical power for several months at INL",
      "made": "Oct 23, 2026 · Antares release (Mark-1 NSDA approved by DOE)",
      "target": "2027; Fort Bragg (Janus) deliveries from 2028",
      "status": "pending",
      "slippage": "0 (new)",
      "grade": "C",
      "outcome": "DOE approved Mark-1 NSDA (first DOE authorization gate; PDSA and DSA still ahead). Mark-0 went NSDA to zero-power criticality in ~8 months",
      "sources": [
        {
          "label": "Antares",
          "url": "https://antaresindustries.com/updates/mark-1-nsda-approval"
        }
      ],
      "as_of": "Oct 26, 2026"
    }
  ]
}