AI 数据中心的能源挑战与灵活性机遇 TED 2026-04-03

AI竞赛与基建瓶颈

当前,全球正处于一场前所未有的人工智能(AI)竞赛之中。各国公司、政府及大学都在竞相研发更庞大、更智能的AI模型和系统,而这一切的背后,是对海量计算能力的需求,这也意味着需要建设更多的数据中心来驱动AI的发展。然而,我们正“头重脚轻”地撞向我们现有基础设施的极限。电力网(Power grid),包含了发电厂、输电线路等所有用于生成和输送电力的基础设施,不仅要满足我们家庭和企业的日常用电,现在还要为AI数据中心供电。在美国,电网运营商报告称,新的AI数据中心项目所需的电力负荷已相当于整个城市的用电量。在某些地区,电力公司已无法满足这种激增的需求。

Original English

Right now, the world is in an AI race. Companies, governments, universities are all racing to build bigger models, smarter systems. And behind the scenes, they are racing to build more data centers to power AI. But there's a problem. We are running head first into the limits of our infrastructure. The power grid includes all the infrastructure, power plants, transmission lines and all to generate and deliver power to our homes, our businesses, and now to AI data centers. In the United States, the grid operators are reporting that new AI data center projects are requesting power loads equal to entire cities. In some regions, utilities simply can't keep up.

能源消耗大户的真相

当听到“AI数据中心”时,很多人脑海中浮现的第一个印象便是“能源消耗大户”(energy hogs)。这一认知并非空穴来风。AI确实在显著加速数据中心的电力需求。据估计,仅训练GPT-4一项,就消耗了相当于数千个美国家庭年用电量的电力。另一个令人警醒的例子来自爱尔兰,目前该国近20%的电力已被数据中心所消耗。这些数字并非冷冰冰的统计数据,它们背后承载着真实的社区故事。在弗吉尼亚州的数据中心走廊,当地居民的电费账单已较几年前上涨了20%,而这仅仅是为了满足附近大型AI设施的电力需求。因此,“能源消耗大户”的标签似乎名副其实。

Original English

So when you hear “AI data center,” what comes to mind? For many, it's one thing: energy hogs. And they are not wrong. AI is dramatically accelerating the electricity demand of data centers. Just training GPT-4 is estimated to have consumed around the annual electricity use of thousands of US homes. In another striking example, in Ireland, nearly 20 percent of the nation's electricity is drawn by data centers today. And these are not just statistics. They are also community stories. In the data center alley in Virginia, residents recently saw higher electricity bills, 20 percent higher already compared to just a few years ago, as utilities scramble to serve massive new AI facilities. So energy-hog label seems well deserved.

数据中心:电网的弹性之“肌”

然而,这仅仅是故事的一半。现在,请看一个全新的视角:这些AI设施不仅仅是“饥饿的大脑”,它们同样可以成为电网的**“弹性肌肉”,根据需求灵活调整其电力消耗。与我们的家庭或医院不同,AI数据中心运行的工作负载具有可预测性**(predictable)、可控性(controllable)且常可延迟(delayable)。这种特性使其成为平衡电网供需的理想选择。通过赋予AI数据中心电力灵活性(power-flexible),我们可以更快速地将其接入电网,同时降低电力成本,提升电网的韧性(resilient)。更重要的是,AI的蓬勃发展恰逢可再生能源(renewable energy)的兴起。风能和太阳能的发电时间并不能完全遵循我们的日程安排,但数据中心却可以。这意味着,如果我们有足够的魄力去重新定义它们的作用,我们便能将AI的崛起与清洁能源的发展同步。

Original English

But that's only half the story. Here is the new view. These facilities are not just energy-hungry brains. They can also be the muscles of the grid, flexing on demand. Unlike our homes or hospitals, AI data centers run jobs that are predictable, controllable and often delayable. That makes them ideal to help balance supply and demand on the grid. By making AI data centers power-flexible, we can connect them much more rapidly to the grid, while at the same time making electricity more affordable and resilient. What's more, the AI boom is arriving just as the renewable boom is also taking off. Wind and solar don't follow our schedules, but data centers can. Which means we can align the rise of AI with the rise of clean energy, if we are bold enough to rethink their role.

从设想到突破:韧性计算之路

实现向电力灵活性(power flexibility)的全面转型,并非凭空而来,而是建立在数十年来关于能源效率计算(energy-efficient computing)、调度(scheduling)和优化(optimization)等领域研究的基础之上。我本人亲身经历了这一历程。在我职业生涯的早期,我提出了一个许多人认为不切实际的问题:计算机系统能否根据电力网的需求调整其行为,同时又不损害对用户的性能承诺?在当时,这听起来颇为激进,因为谁会设计一个会故意减慢自身速度的系统呢?

然而,随之而来的技术突破为我们打开了新的可能。首先,我们发现并非所有计算任务都具有同等紧迫性。有些任务可以等待几分钟或几小时,有些任务的运行速度可以适当放缓,而用户却几乎察觉不到。例如,一位使用AI分析数百张医学影像的研究人员,可能愿意稍等片刻;或者,如果你要在未来几天内微调(fine-tuning)你的AI模型,那么在这几天里适当降低模型运行速度几个小时,也是可以接受的。这种计算本身固有的灵活性(flexibility),恰恰为我们管理电力需求提供了可能。

其次,我们重新定义了问题。我们不再仅仅问“如何以最快的速度进行计算?”,而是转而询问:“如何在满足用户性能协议的同时,使计算机系统能够适应电力网的约束?”这一转变催生了新的策略:限制功率(capping power)、转移工作负载(shifting workloads)以及将数据中心作为电网的弹性储备(flexible reserve)进行配置。

一个关键点在于,我们仍然会兑现对用户的性能承诺,这并非随意为之。用户体验始终是核心目标,并且通过这种方式,用户体验甚至可以变得更加可预测。于是,我们在真实数据中心服务器上构建了原型,它们确实奏效了——系统能够在遵循功率目标的同时,依然交付所需的结果。

然而,这段旅程并非一帆风顺。曾遭遇论文被拒、资金申请失败,同事们也纷纷表示“这永远不可能成功”。但我从小就被认为是个坚持不懈的人,有时甚至有些固执。大胆的想法需要坚持,因为改变在变得显而易见之前,几乎总是显得不可能。因此,你需要吸收这些反馈,一遍又一遍地重塑你的思路,并持续构建、不断证明。如今,12年前始于白板上的初步构想,已经真正在AI数据中心投入运行。

Original English

All this transformation to power flexibility didn't just come out of thin air. It builds on decades of research on energy-efficient computing, scheduling, optimization and many others. I've lived this journey myself. Early in my career, I asked a question that many found unrealistic. Could computer systems adapt their behavior depending on power grid needs, but without breaking their performance promise to their users? At the time, this sounded radical because why would we ever design a system that would slow itself down on purpose? But then came the breakthroughs. First, we discovered not all computing tasks are urgent. Some can wait for minutes or hours, and some can be slowed down without anyone really noticing it. For example, a researcher analyzing hundreds of medical images with AI may be OK with waiting just a little longer. Or, if you are fine-tuning your AI model over the course of the next few days, you may be OK with slowing it down for just a few hours. This inherent flexibility in computing gives us the flexibility we need to manage power. Second, we reframed the problem. Instead of asking how do we compute as fast as possible, we asked, how do we make computer systems meet the constraints of the power grid, while at the same time still delivering on user performance agreements? This shift led to new strategies: capping power, shifting workloads and provisioning the data center as a flexible reserve to the grid. A key aspect here is that we do keep the performance promise to users, so it's not arbitrary. User experience remains as a key target. And better yet, it becomes more predictable. So we built prototypes on real data-center servers, and they worked. Systems that could follow a power target while still delivering results. But all this journey wasn't smooth. There were paper rejections, funding rejections, colleagues telling me this would never work. Well, since I was a kid, I was told I'm a persistent person. Perhaps stubborn at times. And bold ideas require persistence because change almost always looks impossible before it looks obvious. So you take that feedback, you reframe it again and again, and you keep building. You keep proving. So what began as scribbles on a whiteboard 12 years ago, is now running on real AI data centers.

实践困境与时机考量

那么,这一切为何在现在如此重要?因为电力网面临的挑战,并不仅仅是如何产生更多的电力,而在于时机(timing)。例如,太阳能可能在中午提供大量电力,但电力需求的高峰期却在晚上。风力发电量可能一天充沛,另一天却稀缺。核能发电站的建设耗时数十年且成本高达数十亿美元,并且往往难以选址在城市区域。电池技术至关重要,但其规模化部署成本高昂、速度缓慢,且并不总是环保。

与此同时,AI数据中心自身也面临着连接电网的漫长等待,在弗吉尼亚等地,这一等待时间长达五到七年。在AI领域,技术的重大变革几乎每六个月就会发生一次,五到七年简直是永恒

因此,一个巨大的机遇摆在我们面前:通过恰当的协同调度(orchestration),AI数据中心今天就可以实现电力灵活性,无需漫长等待,也无需新建庞大的电力基础设施。它们可以吸收下午多余的太阳能,在用电高峰时段调低负荷,充当“虚拟电池”(virtual batteries)的角色。

其潜在影响是真实的。以8月23日的德克萨斯州为例,在一次残酷的热浪中,不断增长的电力需求将电网推向了极限,导致批发电力价格在一个下午内飙升了800%以上。如果当时广泛部署了柔性负载(flexible loads),本可以大幅降低成本,并避免向消费者发出紧急警报。

因此,我们面临两大机遇:第一,我们可以使现有数据中心变得灵活,从而帮助预防停电事故并降低电费;第二,也许更具意义的是,通过使未来的数据中心具备电力灵活性,我们可以在无需等待大规模电网升级的情况下,更早地将其接入电网。

如果我们忽视这一机遇,我们将不仅浪费可再生能源、推高电费,还将延缓AI的普及,使其变得更昂贵、更迟缓,并减少其对社会的普惠性。

Original English

Why does this matter now? Because the power grids challenge isn't just to generate more power. It's about timing. Solar gives us a glut of electricity at noon, but demand might peak in the evening. Wind might be abundant one day and scarce the next. Nuclear takes decades and billions of dollars to build and is often hard to locate in urban areas. Batteries are critical, but scaling them is costly, slow, and often not environmentally clean. Meanwhile, AI data centers themselves face five to seven-year wait times just to connect to the grid in places like Virginia. In AI time, where technologies shift in a major way every six months, five to seven years is an eternity. So here's the opportunity. With the right orchestration, AI data centers can be flexible today. No waiting, no new massive power infrastructure construction. They can soak up excess solar in the afternoon, scale down at peak times and act as virtual batteries today. And the stakes are real. Take Texas, August 23. During a brutal heat wave, the rising electricity demand pushed the grid to its limits. Wholesale electricity prices spiked over 800 percent in a single afternoon. So flexible loads, if they were widely available, could have reduced the costs and could have prevented the emergency alerts that went to the consumers. So we have two opportunities here. One, we can make current data centers flexible and help prevent blackouts and reduce electricity costs. Two, and perhaps the more significant, by making future data centers power-flexible, we can connect them much earlier without waiting for major power grid upgrades. If we ignore this opportunity, we are not just wasting renewable energy and we are not just raising our electricity bills. We are also slowing AI adoption, making it delayed, more expensive and less accessible to society.

AI:驱动灵活性的指挥家

然而,实现这种灵活性并非易事。电力价格每小时都在变化,工作负载可能毫无预兆地到来,而各州、各国的电网规则也各不相同。因此,没有任何人工操作员或单一固定的数据中心管理策略能够跟上这些变化。

这时,AI本身又回到了故事的核心。驱动这种不可预测需求的技术,也可能是唯一足够智能以驾驭它的力量。AI能够学习模式、预判电网需求,并实时协调跨数据中心、跨公用事业公司乃至跨国家的操作。

想象一下,一个数据中心或一个庞大的数据中心网络,就像一个管弦乐队,数百种乐器同时演奏。如果无人指挥,听起来可能是一片混乱。但如果引入一位指挥家(conductor),瞬间,所有的噪音便化为了美妙的音乐。在这个比喻中,AI就是这位指挥家。AI可以指挥数据中心的运行,使其能够根据电网的实时需求、可用的电力以及用户的要求,精确匹配电力约束。其结果便是和谐统一:可靠的电力、高效的计算,以及一个协同运作的完美系统。

这正是我们所构建的。我们开发了能够减速、加速、暂停数据中心内工作负载,或在数据中心之间转移工作负载的软件。我们的“指挥平台”(conductor platform)能够实时调谐性能和功耗,同时严格遵守用户和云服务提供商的性能需求。通过这种按需“弹性”的模式,我们可以大大加快AI数据中心的接入速度。

Original English

But there's a catch. Orchestrating this flexibility is not easy. Prices change hourly. Workloads may arrive unpredictably. Grid rules change across states, across countries. So no human operator and no single fixed data center management policy can keep up. This is where AI itself comes back into the story. The very technology driving this unforeseen demand is also probably the only thing smart enough to tame it. AI can learn patterns, anticipate grid needs and coordinate across data centers, across utilities, even nations in real time. Imagine a data center or a whole network of them, as an orchestra, with hundreds of instruments, all playing at once. Left on their own, it can sound like chaos. But bring in a conductor, suddenly all that noise turns into music. The conductor in this case is AI. AI can direct data center operation so that the data center can precisely match power constraints, depending on what the grid needs, what power is available and what users demand. The result is harmony. Reliable electricity, efficient computing and a system that works beautifully together. And that's exactly what we've built. We built software that slows down, speeds up, or pauses workloads in a data center, or shifts workload among data centers. Our conductor platform tunes performance and power at real time, all the while respecting user and cloud-provider performance needs.

赋能未来:可持续AI的基石

通过这种方式,我们可以让AI数据中心更快速地接入电网,更有效地利用电网中可用的电力资源,并最终加速AI的广泛应用。我亲历了这一从看似不可能的想法,到实验室原型,再到如今实际运行系统的全过程,并坚信这仅仅是开始。

AI已经深刻地重塑了我们的计算方式,它同样有潜力重塑我们为世界供电的方式。因此,关键问题不在于AI消耗了多少能源,而在于AI能够解锁多少灵活性、韧性和清洁能源?

如果我们足够有远见,重新审视AI数据中心的定位,那么这些如今看似累赘的机器,或许将成为我们构建可持续AI未来的最宝贵资产。

Original English

In this way, by flexing when needed, we can connect AI data centers much faster to the grid. Make better use of the available power in the power grid and enable faster AI adoption. I've been inside this story from an idea that once seemed impossible to prototypes in a lab, to systems now running in the field, and I believe this is just the beginning. AI is already reshaping how we compute, but it could also reshape how we power the world. So the question isn't how much energy AI consumes. The real question is how much flexibility, resilience and clean power can AI unlock? If we are bold enough to rethink AI data centers, the very machines that now seem like a burden could be our greatest assets in building a sustainable AI future. Thanks. (Applause)

📌 文中提及的人物和组织

产品/模型: GPT-4

关键字: ai-data-centers power-grid-management renewable-energy-integration energy-efficiency ai-orchestration