根据 WIRED 取得之内部电邮，xAI 在密西西比州 Southaven 的第二座资料中心园区 Colossus 2，于 3 月下旬至 5 月上旬的约两个月内新增 19 部可携式天然气涡轮机，使现场运转总数达 46 部。电邮所附试算表之「Total Power Output」栏位经 Mississippi Department of Environmental Quality（MDEQ）发言人 Jan Schaefer 证实为各机组兆瓦（MW）输出，表示 xAI 自 3 月中旬以来新增天然气涡轮容量超过 500 MW。

新增机组发生于 NAACP 与 Southern Environmental Law Center（SELC）、Earthjustice 于 4 月提起诉讼期间；该诉讼指称 xAI 在未取得适当空气许可下运转逾二十余部涡轮机，并具体称其以 27 部机组形成「personal power plant」。SELC 律师 Ben Grillot 表示团队 4 月以无人机巡查仅辨识出额外 6 部，后由电邮才确认新增为 19 部；其中 8 部（合计输出超过 200 MW）是在诉讼提出后才安装。法律文件并称原先 27 部涡轮机总容量为 495 MW，足以供应约 400,000 户用电。

监管面上，田纳西州与密西西比州机关主张因机组非固定式，依《Clean Air Act》可在无许可下运转 1 年；然而 MDEQ 于 3 月核发之 Southaven 许可系针对 41 部涡轮机，且 Schaefer 另向 WIRED 确认电邮所指 46 部并未涵盖于该许可。4 月前后的无人机影像与公共纪录显示多部机组在核发许可前数周已运转；NAACP 近期并声请紧急禁制令要求关停 Colossus 2 涡轮机。与此同日，Anthropic 宣布与 xAI 签约使用 Colossus 1 的全部算力；Elon Musk 亦称 SpaceX 与 xAI 合并后之「SpaceXAI」训练已移至 Colossus 2。

Internal emails reviewed by WIRED indicate that xAI added 19 portable natural-gas turbines at its Colossus 2 data-center site in Southaven, Mississippi, between late March and early May (about two months), bringing the operating total to 46 turbines. A spreadsheet column labeled “Total Power Output,” confirmed by Mississippi Department of Environmental Quality (MDEQ) spokesperson Jan Schaefer to denote per-turbine megawatt (MW) output, implies xAI added more than 500 MW of gas-turbine capacity since mid-March.

The buildout is unfolding during litigation filed in April by the NAACP with the Southern Environmental Law Center (SELC) and Earthjustice, alleging Clean Air Act violations for operating more than two dozen turbines without appropriate air permits and describing 27 turbines as a “personal power plant.” SELC lawyer Ben Grillot said a drone flyover in April revealed six additional turbines, but the MDEQ emails showed 19 new units; email dates indicate eight of the 19—representing more than 200 MW—were installed after the lawsuit was filed. NAACP legal filings also state the original 27 turbines total 495 MW, described as enough to power about 400,000 homes.

Regulators in Tennessee and Mississippi argue that because the turbines are nonstationary, they may operate for 1 year without permits under the Clean Air Act; however, MDEQ’s March permit for Southaven covered 41 turbines, and Schaefer told WIRED the 46 turbines referenced in the emails were not covered. Drone footage and public records suggest multiple turbines ran for weeks before the permit was granted; the NAACP has since sought an emergency injunction to shut down Colossus 2’s turbines. The same day the injunction was sought, Anthropic announced an agreement to use all computing resources at Colossus 1, and Elon Musk said training for “SpaceXAI” (after the SpaceX–xAI merger) had already moved to Colossus 2.