{
  "schema_version": 1,
  "source_compilation_context": {
    "mi": {
      "attribution": {
        "inventory": {
          "name": "Compute Atlas",
          "creator": "Edward Kubiak",
          "url": "https://www.compute-atlas.com/api",
          "license": "CC BY 4.0",
          "license_url": "https://creativecommons.org/licenses/by/4.0/",
          "snapshot_url": "https://www.compute-atlas.com/api/facilities",
          "retrieved": "2026-10-14",
          "sha256": "79ad432dab7c128e428234c9d0dd40933114b415a4a5d697db00095637d50f37",
          "changes": "Added provenance, publication-date distinctions, display-safe wording, quarantine flags and state partitioning. Original source records retained locally."
        },
        "counties": "U.S. Census Bureau county boundaries (public domain)",
        "research": "Field-specific source context. See the linked source and limits on each record."
      },
      "source_data_url": "https://datacentersatlas.com/data/mi.json",
      "updated": "2026-10-24"
    }
  },
  "scope": "Retained county context, which can be broad or unresolved. No parcel or municipal jurisdiction is inferred. Research records retain their sources, dates and location limits. Counts are not a census of operating buildings. Company name links alone do not establish ownership or operation.",
  "collection": {
    "kind": "counties",
    "key": "26025",
    "label": "Calhoun County, Michigan"
  },
  "records": [
    {
      "id": "alterra-development-marshall-mi",
      "state": "mi",
      "kind": "facility",
      "name": "Alterra Marshall Technology & Energy Center",
      "group": "unknown",
      "status": "Status unclear",
      "raw_status": "",
      "status_field": "",
      "crypto": false,
      "type": "Data center (inventory classification)",
      "counties": [
        "Calhoun"
      ],
      "city": "Marshall",
      "address": "",
      "who": "",
      "end_user": "",
      "mw": null,
      "power": "",
      "power_note": "",
      "investment": "",
      "jobs": "",
      "acres": null,
      "utility": "",
      "water": "",
      "incentives": "",
      "note": "Manual source context is available for this inherited inventory record. The inventory label and approximate geography are retained for discovery. This is not certification of current operation, ownership, a separate physical building, technical capacity or a precise parcel. Missing fields remain unknown. Marshall conditional property agreement and separate powerplant scope. Duediligenceagreement notcompletedpurchase,finalsiteapproval oroperatingcampus.1GWpowerplantnotITandnotuniversallyguaranteedratepayerbenefit. Forecastjobsapplycombinedtechnology/energydevelopmentnotallDCroles.18to24monthconstructionstartforecastconditionalafterapprovals, not2026actualstart. Existingindustrialzoningdoesnotproveallpermits. Broadernaturearea notautomaticallyprojectland. Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building.",
      "date": "",
      "events": [
        [
          "2025-10-30",
          "The City Mayor update reports that Alterra presented MTEC to the Local Development Finance Authority on October 30, 2025 and that the authority agreed to enter a purchase agreement. This dates the reported administrative action, not completed purchase, final approval, construction or computing operation."
        ]
      ],
      "timeline": [],
      "opened": "",
      "tier": "",
      "sources": [
        {
          "url": "https://marshalladvisor.com/articles/news/data-center-being-proposed-in-marshall-begins-due-dilligence-period-with-city/",
          "host": "marshalladvisor.com",
          "date": "2025-12-27",
          "published": "2025-12-27",
          "checked": "2026-10-14",
          "date_kind": "publication",
          "label": "Reviewed source"
        },
        {
          "url": "https://www.cityofmarshall.com/DocumentCenter/View/2300/Statement-Regarding-MTEC-Update-May-2026",
          "host": "www.cityofmarshall.com",
          "published": "",
          "date": "",
          "checked": "2026-10-23",
          "label": "Reviewed government record"
        }
      ],
      "loc": {
        "lat": 42.24653,
        "lng": -85.00564,
        "precision": "county",
        "basis": "Shown at county level only. The dot is placed inside the county for the map and is not the site, its address or a parcel."
      },
      "reviewed_evidence": [
        {
          "overlay": "regional-development-review-round13-2026-10-14.json",
          "scope": "Marshall conditional property agreement and separate powerplant scope",
          "fields": {
            "developer": "Alterra Development",
            "project": "Marshall Technology and EnergyCenter",
            "location": "BrooksIndustrialPark, Marshall, Michigan",
            "reported_initial_purchase_agreement_date": "2025-10-30",
            "proposed_land_acres_min_exclusive": 200,
            "reported_due_diligence_months_range": [
              6,
              12
            ],
            "proposed_generation_gw": 1,
            "power_basis": "onsite generation, not critical IT",
            "developer_expected_direct_skilled_jobs_range": [
              300,
              500
            ]
          },
          "notes": [
            "Duediligenceagreement notcompletedpurchase,finalsiteapproval oroperatingcampus.1GWpowerplantnotITandnotuniversallyguaranteedratepayerbenefit. Forecastjobsapplycombinedtechnology/energydevelopmentnotallDCroles.18to24monthconstructionstartforecastconditionalafterapprovals, not2026actualstart. Existingindustrialzoningdoesnotproveallpermits. Broadernaturearea notautomaticallyprojectland.",
            "Fields can apply to shared campus, regional or historical context; consult source review before assigning to a building."
          ],
          "sources": [
            {
              "url": "https://marshalladvisor.com/articles/news/data-center-being-proposed-in-marshall-begins-due-dilligence-period-with-city/",
              "host": "marshalladvisor.com",
              "date": "2025-12-27",
              "published": "2025-12-27",
              "checked": "2026-10-14",
              "date_kind": "publication",
              "label": "Reviewed source"
            }
          ],
          "whole_record_certified": false
        },
        {
          "overlay": "Codex 3 research cohort 51",
          "scope": "The original City Mayor update describes the Marshall Technology and Energy Center as proposed, with an extended due diligence period and a potential later site plan if Alterra completes its purchase. It reports an October 30, 2025 LDFA presentation and agreement to enter a purchase agreement. These historical administrative facts do not establish completed acquisition, construction, commissioned generation or current computing. The document name supplies a month but no exact online publication day, so publication day remains unknown.",
          "fields": {
            "current_stage_evidence": {
              "outcome": "historical_city_purchase_due_diligence_current_stage_held",
              "scope": "The original City Mayor update describes the Marshall Technology and Energy Center as proposed, with an extended due diligence period and a potential later site plan if Alterra completes its purchase. It reports an October 30, 2025 LDFA presentation and agreement to enter a purchase agreement. These historical administrative facts do not establish completed acquisition, construction, commissioned generation or current computing. The document name supplies a month but no exact online publication day, so publication day remains unknown."
            },
            "source_read_scope": {
              "city_update_text_pages": [
                1,
                2
              ],
              "mayor_observation_of_other_switch_site_not_transferred": true
            }
          },
          "notes": [
            "The original City Mayor update describes the Marshall Technology and Energy Center as proposed, with an extended due diligence period and a potential later site plan if Alterra completes its purchase. It reports an October 30, 2025 LDFA presentation and agreement to enter a purchase agreement. These historical administrative facts do not establish completed acquisition, construction, commissioned generation or current computing. The document name supplies a month but no exact online publication day, so publication day remains unknown.",
            "Existing location, jurisdiction, provider roles, identities, quantities and physical opening dates remain unchanged. Proposal and administrative evidence do not certify computing operation."
          ],
          "sources": [
            {
              "url": "https://www.cityofmarshall.com/DocumentCenter/View/2300/Statement-Regarding-MTEC-Update-May-2026",
              "host": "www.cityofmarshall.com",
              "published": "",
              "date": "",
              "checked": "2026-10-23",
              "label": "Reviewed government record"
            }
          ],
          "checked": "2026-10-23",
          "whole_record_certified": false
        }
      ],
      "manual_source_reviewed": true,
      "whole_record_certified": false,
      "field_evidence_present": true,
      "inventory_label_retained": true,
      "precision_label": "Exact site not published; shown at county level",
      "summary": "Marshall · Calhoun · Source context reviewed",
      "event_evidence": [
        {
          "date": "2025-10-30",
          "text": "The City Mayor update reports that Alterra presented MTEC to the Local Development Finance Authority on October 30, 2025 and that the authority agreed to enter a purchase agreement. This dates the reported administrative action, not completed purchase, final approval, construction or computing operation.",
          "kind": "announced",
          "sources": [
            {
              "url": "https://www.cityofmarshall.com/DocumentCenter/View/2300/Statement-Regarding-MTEC-Update-May-2026",
              "host": "www.cityofmarshall.com",
              "published": "",
              "date": "",
              "checked": "2026-10-23",
              "label": "Reviewed government record"
            }
          ]
        }
      ],
      "location_display": {
        "policy": "reviewed-map-references-2026-10-23",
        "decision": "withheld_unreviewed_point",
        "scope": "The available point evidence does not establish a supported site location. No site pin, nearby distance or aerial destination is published. The original coordinate and its provenance remain in research history.",
        "county_display": "26025"
      }
    }
  ],
  "compilation_license": "withheld_pending_owner_decision"
}