Musk’s faster path to more gas turbines comes with pollution problem
Musk’s faster path to more gas turbines comes with pollution problem
马斯克加速燃气轮机生产的路径伴随着污染问题
Elon Musk says he’s found a way to solve one of AI’s biggest bottlenecks by making a hard-to-manufacture turbine part himself. On Saturday, Musk confirmed what a secret foundry SpaceX has been building in Bastrop, Texas, is for — an apparent response to a story that was already closing in on the details. 埃隆·马斯克表示，他已经找到了一种解决人工智能（AI）最大瓶颈之一的方法，那就是亲自制造一种难以生产的涡轮机部件。周六，马斯克证实了 SpaceX 在德克萨斯州巴斯特罗普（Bastrop）秘密建造的铸造厂的用途——这显然是对一篇即将披露相关细节的报道所作出的回应。
Earlier in the day, The Information published a report citing job listings that explicitly mention a “blades and vanes foundry,” plus findings from Corey Trinetti, a due diligence specialist who authors detailed reviews of AI infrastructure sites in his newsletter and who’d reported that SpaceX had bought roughly 830 acres near its existing Starlink factory in Bastrop between March and June. 当天早些时候，《The Information》发布了一篇报道，援引了明确提到“叶片和导向叶片铸造厂”的招聘信息，以及尽职调查专家科里·特里内蒂（Corey Trinetti）的调查结果。特里内蒂在他的时事通讯中撰写了关于 AI 基础设施站点的详细评论，他曾报道称，SpaceX 在 3 月至 6 月期间在其位于巴斯特罗普现有的星链（Starlink）工厂附近购买了约 830 英亩土地。
“SpaceX and Tesla are each building 100GW/year of solar production capacity as fast as possible,” Musk wrote on X on Saturday, “but natural gas will still be needed to supplement and bootstrap solar for several years. The limiting factor for nat gas turbine production is casting the blades & vanes. By doing in-house casting at SpaceX, we can accelerate nat gas turbines coming online by up to 18 months, which is a profound game-changer.” “SpaceX 和特斯拉都在以最快速度建设每年 100GW 的太阳能生产能力，”马斯克周六在 X 上写道，“但在未来几年内，仍需要天然气来补充和启动太阳能。天然气轮机生产的限制因素是叶片和导向叶片的铸造。通过在 SpaceX 内部进行铸造，我们可以将天然气轮机的上线时间缩短多达 18 个月，这将是一个深刻的转折点。”
The “why” of all this goes back to one of the biggest challenges facing the AI industry right now. GPU shortages are still an issue — Nvidia’s newest Blackwell chips are still running lead times of several months, for example — but a second constraint has emerged alongside it, which is the physical power grid. 这一切的“原因”可以追溯到目前 AI 行业面临的最大挑战之一。GPU 短缺仍然是一个问题——例如，英伟达最新的 Blackwell 芯片交付周期仍需数月——但与此同时，第二个制约因素也随之出现，那就是物理电网。
The International Energy Agency projects global data center electricity use will roughly double by 2030, and gas turbine maker GE Vernova says it’s essentially sold out of production capacity through 2030 due largely to AI infrastructure demand. That shortage is why building private gas-fired plants next to data centers, instead of waiting on the grid, has become a ubiquitous strategy for so-called hyperscalers, including Amazon, Google, Meta, OpenAI, and Microsoft. After years of prioritizing wind and solar, they’re all now betting on natural gas to get data centers online faster. 国际能源署预计，到 2030 年，全球数据中心的用电量将大致翻一番。燃气轮机制造商 GE Vernova 表示，由于 AI 基础设施的需求，其 2030 年前的产能已基本售罄。这种短缺正是为什么在数据中心旁边建设私人燃气电厂，而不是等待电网供电，已成为亚马逊、谷歌、Meta、OpenAI 和微软等所谓“超大规模企业”的普遍策略。在多年优先考虑风能和太阳能之后，他们现在都押注于天然气，以使数据中心更快上线。
As for the casting bottleneck specifically, according to The Information, the blades inside a gas turbine’s hottest section run at temperatures around 3,000 to 3,600 degrees Fahrenheit, which is roughly 800 degrees hotter than the melting point of the very metal alloy they’re made from. That’s only possible because of the blades’ internal cooling channels and thermal-barrier coatings, plus the specific way each blade is cast. Just four companies worldwide have mastered the casting process well enough to produce them at industrial scale, and all of them are tapped out right now. 至于具体的铸造瓶颈，据《The Information》报道，燃气轮机最热部分的叶片运行温度约为 3,000 到 3,600 华氏度，这比制造它们的金属合金熔点高出约 800 度。这之所以成为可能，完全归功于叶片内部的冷却通道和热障涂层，以及每个叶片特定的铸造方式。全球只有四家公司掌握了足以进行工业规模生产的铸造工艺，而且目前它们的产能都已耗尽。
What makes the whole thing especially difficult is that each blade has to be cast as a single, unbroken crystal, grown slowly inside a vacuum furnace, without the microscopic seams that let ordinary cast metal crack under stress. It’s a tricky process even for the smaller blades used in jet engines; the blades in power-plant turbines are considerably larger, which makes producing them at that scale and without defects even harder. 让整个过程变得特别困难的是，每个叶片必须铸造成一个单一的、完整的晶体，在真空炉中缓慢生长，不能有普通铸造金属在压力下容易开裂的微小接缝。即使对于喷气发动机中使用的小型叶片来说，这也是一个棘手的过程；而发电厂涡轮机中的叶片要大得多，这使得在那种规模下且无缺陷地生产它们变得更加困难。
If SpaceX pulls this off — and it’s easier said than done, of course — it would mean a Musk-controlled entity holds a manufacturing capability that every other AI infrastructure builder currently depends on a tiny oligopoly for, giving SpaceXAI an edge that’s difficult for any well-funded but non-manufacturing competitor to copy quickly. 如果 SpaceX 成功做到这一点——当然，说起来容易做起来难——这意味着一家由马斯克控制的实体将掌握一种制造能力，而其他所有 AI 基础设施建设者目前都依赖于一个微小的寡头垄断市场。这将赋予 SpaceXAI 一种优势，任何资金雄厚但缺乏制造能力的竞争对手都难以迅速复制。
But it would also mean more gas turbines coming on fast, and turbines in the ground are already drawing federal lawsuits and peer-reviewed health research over the pollution they emit. In Memphis, where SpaceXAI has run gas turbines to power its Colossus data centers since 2024, the NAACP has repeatedly accused the company of operating turbines without the permits or pollution controls required by federal law. 但这同时也意味着更多的燃气轮机将快速投入使用，而现有的燃气轮机因其排放的污染问题，已经引发了联邦诉讼和同行评审的健康研究。在孟菲斯，自 2024 年以来，SpaceXAI 一直在那里运行燃气轮机为其 Colossus 数据中心供电，美国全国有色人种协进会（NAACP）多次指责该公司在没有联邦法律要求的许可证或污染控制措施的情况下运行涡轮机。
The organization’s concern is that turbines like these emit smog-forming compounds and hazardous chemicals like formaldehyde, pollutants linked to asthma, respiratory disease, and certain cancers. (The site sits near neighborhoods that already face heavy industrial pollution, and University of Memphis researchers said that in their own admittedly limited analysis, air pollution grew “slightly worse” because of the data center.) 该组织的担忧在于，这类涡轮机会排放形成烟雾的化合物和甲醛等危险化学品，这些污染物与哮喘、呼吸道疾病和某些癌症有关。（该站点位于已经面临严重工业污染的社区附近，孟菲斯大学的研究人员表示，在他们承认有限的分析中，由于该数据中心的存在，空气污染变得“稍微严重了一些”。）
But Memphis just happens to be the most visible case. The same fight is playing out anywhere gas turbines have become the default fix for data center power shortages. In Virginia’s “Data Center Alley,” a study commissioned by the Piedmont Environmental Council, using the EPA’s own COBRA health-impact model, found that emissions from a single facility’s eight full-time gas turbines could reach more than 2.5 million people across multiple counties — with the heaviest impact landing on already-marginalized communities — and cause an estimated 3.4 to 6.5 additional premature deaths a year, translating to $53 million to $99 million in annual health-related damages. 但孟菲斯恰好是最引人注目的案例。同样的斗争正在任何将燃气轮机作为数据中心电力短缺默认解决方案的地方上演。在弗吉尼亚州的“数据中心巷”（Data Center Alley），皮埃蒙特环境委员会（Piedmont Environmental Council）委托进行的一项研究，利用美国环保署（EPA）的 COBRA 健康影响模型发现，单个设施的八台全职燃气轮机的排放量可能影响多个县超过 250 万人——其中受影响最严重的是本已边缘化的社区——并导致每年估计 3.4 到 6.5 例额外的过早死亡，相当于每年 5300 万至 9900 万美元的健康相关损失。