{"id":"ee721b56-04e9-45a0-a9e7-d35b1371566d","slug":"stargate-milam-county-texas","name":"Stargate Milam County (Texas)","aliases":[],"locationId":"a1c7c0ac-a267-4e72-b3ab-5522eef71afb","lat":30.655,"lng":-96.975,"locationPrecision":"city","landStatus":"private","lifecycleState":"under_construction","powerSourceMix":"solar_storage","interconnectionQueueStatus":"Inside ERCOT, structure not disclosed: the campus sits in the ERCOT footprint, and the coverage states plainly that the exact power mix is not public and that developers there may use grid supply, private wire gas, renewables with storage, or a combination. Recorded as unresolved rather than guessed.","interconnectionQueueId":null,"expectedEnergizationDate":null,"dedicatedSubstation":null,"gridOperator":"ERCOT","waterSourceNotes":"Designed as a water-minimizing 'fast-build' campus.","servingUtility":null,"acreage":595,"totalBuildingSqft":null,"streetAddress":null,"notes":"One of the two SoftBank/OpenAI-led Stargate sites (announced Sept 24, 2025), built and operated by SoftBank subsidiary SB Energy as a water-minimizing 'fast-build' campus ~70 miles northeast of Austin near Rockdale in Milam County. Epoch AI's April 2026 tracker reports steel framing and roofing visible with delivery expected around October 2026 and a planned ~1.2 GW; on-site generation type not disclosed. No energized capacity reported yet.","keyFacts":[{"label":"Location","value":"~70 miles NE of Austin, near Rockdale (Milam County, TX)"},{"label":"Developer","value":"SB Energy (SoftBank subsidiary)"},{"label":"Design","value":"\"Fast-build\" campus, water-minimizing"},{"label":"Planned capacity","value":"1.2 GW (Epoch AI planned-capacity estimate)"},{"label":"Lifecycle","value":"Under construction; March 2026 satellite showed steel framing on first building. TDLR filings target Oct 15 2026 structural completion"},{"label":"Announced investment","value":"$3B campus + $1B OpenAI/SoftBank into SB Energy"},{"label":"On-site power","value":"New solar generation + battery storage announced"},{"label":"Grid operator","value":"ERCOT"},{"label":"Note on the 1.5 GW figure","value":"OpenAI's 1.5 GW is the COMBINED SoftBank sites (Milam + Lordstown), not Milam alone"}],"reviewStatus":"reviewed","sources":[{"url":"https://openai.com/index/five-new-stargate-sites/","title":"OpenAI, Oracle, and SoftBank expand Stargate with five new AI data center sites","sourceName":"OpenAI"},{"url":"https://epoch.ai/publications/openai-stargate-where-the-us-sites-stand","title":"OpenAI Stargate: where the US sites stand","sourceName":"Epoch AI"},{"url":"https://www.kcentv.com/article/news/local/stargate-ai-data-center-coming-milam-county/500-282d4a0a-1e79-4adc-ae6b-0dd858d4ab50","title":"Stargate AI data center coming to Milam County","sourceName":"KCEN-TV"},{"url":"https://www.datacenterfrontier.com/machine-learning/article/55319132/scaling-stargate-openais-five-new-us-data-centers-push-toward-10-gw-ai-infrastructure","title":"Scaling Stargate: OpenAI's Five New U.S. Data Centers Push Toward 10 GW AI Infrastructure","sourceName":"Data Center Frontier"}],"reviewNote":null,"createdAt":"2026-08-17T18:13:18.378Z","updatedAt":"2026-08-28T19:35:59.017Z","location":{"id":"a1c7c0ac-a267-4e72-b3ab-5522eef71afb","name":"Rockdale","slug":"rockdale-texas","kind":"city","parentLocationId":"45f67762-10f4-4255-be84-45c73efe25f9","region":"Texas","lat":30.655,"lng":-96.975,"reviewStatus":"reviewed","aliases":[],"collisionRisk":"high","reviewNote":null,"createdAt":"2026-08-17T18:13:17.996Z","updatedAt":"2026-08-21T03:20:12.226Z"},"parties":[{"id":"e7596c0c-07c9-45aa-9f77-20b595d47ceb","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":null,"externalName":"SB Energy","role":"developer","structureNotes":"SoftBank power subsidiary building and operating the fast-build campus.","createdAt":"2026-08-17T18:13:21.063Z","company":null},{"id":"9b610433-34d4-452b-a1a7-fe7c997de4e3","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":null,"externalName":"ERCOT","role":"grid_operator","structureNotes":"Texas grid; site relies partly on on-site generation.","createdAt":"2026-08-17T18:13:23.332Z","company":null},{"id":"8885bfe0-443c-43f8-ab48-841c26db6b53","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":"bd3c5b86-a4cf-4655-842d-e32895c87e6b","externalName":"OpenAI","role":"tenant","structureNotes":"Anchor tenant / Stargate program lead.","createdAt":"2026-08-17T18:13:20.289Z","company":{"id":"bd3c5b86-a4cf-4655-842d-e32895c87e6b","name":"OpenAI","slug":"openai"}},{"id":"07e3afef-baa4-4f13-8692-f7105b17c268","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":"e6707518-29cb-4bcd-baae-f6e93ebc46ff","externalName":"SoftBank Group","role":"financier","structureNotes":"Parent of SB Energy; SoftBank/OpenAI-led portion of Stargate.","createdAt":"2026-08-17T18:13:21.819Z","company":{"id":"e6707518-29cb-4bcd-baae-f6e93ebc46ff","name":"SoftBank Group","slug":"softbank-group"}},{"id":"3a4fe473-4c99-41a7-846b-b3c2357865a4","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":"a9609061-00fd-4d9b-9b2d-ce2d772ab825","externalName":"Nvidia","role":"chip_supplier","structureNotes":"GPU supplier across the Stargate program.","createdAt":"2026-08-17T18:13:22.579Z","company":{"id":"a9609061-00fd-4d9b-9b2d-ce2d772ab825","name":"NVIDIA","slug":"nvidia"}},{"id":"8202ee72-323a-4cf1-ba64-178ded4cfbfd","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","companyId":"d6ac4d62-36f9-4800-8d56-5e82c51594d5","externalName":null,"role":"developer","structureNotes":null,"createdAt":"2026-08-27T22:22:47.243Z","company":{"id":"d6ac4d62-36f9-4800-8d56-5e82c51594d5","name":"Stargate Infrastructure","slug":"stargate-infrastructure"}}],"capacityClaims":[{"id":"a499d694-0d2e-46bd-861d-b0e5633c7737","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","series":"announced","valueGw":1.2,"asOf":"2026-04-17T00:00:00.000Z","sourceUrl":"https://epoch.ai/publications/openai-stargate-where-the-us-sites-stand","sourceType":"journalist_report","evidenceTier":"claimed","supersedesId":null,"note":"Epoch AI planned-capacity estimate for the Milam County fast-build site.","createdAt":"2026-08-17T18:13:19.063Z"},{"id":"9cb0e917-fe5e-4141-8c7d-0e1584db9b3a","dataCenterId":"ee721b56-04e9-45a0-a9e7-d35b1371566d","series":"announced","valueGw":1.5,"asOf":"2025-09-24T00:00:00.000Z","sourceUrl":"https://openai.com/index/five-new-stargate-sites/","sourceType":"press_release","evidenceTier":"claimed","supersedesId":null,"note":"OpenAI's combined 1.5 GW figure for the two SoftBank sites (Milam + Lordstown) over ~18 months; 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