The Coal Plants That AI Kept Open

The coal plant in Ottawa County, Michigan was supposed to shut down on May 31, 2025. It is still running today. The reason it is still running is an AI buildout that does not need it, ordered to stay open by a federal agency, and paid for by the people who breathe the air around it.

The plant is the J.H. Campbell Generating Plant, a coal-fired station rated between 1,331 and 1,560 megawatts depending on the count. Its owner, Consumers Energy, had planned its retirement for years. The Michigan Public Service Commission, the state body whose job is to know, stated plainly that there was no energy emergency in Michigan or in the regional grid that would justify keeping it open. The grid was ready for the plant to close. Then the US Department of Energy issued an emergency order under Section 202(c) of the Federal Power Act and the plant did not close.

Consumers Energy reportedly spent 29 million dollars keeping the Campbell plant running in the first month after the order. By February 2026 that figure had reportedly grown to 135 million dollars. Those costs are borne by ratepayers. The households in the service territory are paying, on their monthly utility bills, to keep open a coal plant their own state regulator said was not needed. The most recent order keeping Campbell online expires today, May 18, 2026.

This is not one plant. This is a pattern, and the pattern has a cause.

The Retirements That Did Not Happen

American coal has been in decline for two decades. The decline is not ideology. It is economics. Coal is expensive to run and renewables plus gas are cheaper. In 2022 the United States retired 11.6 gigawatts of coal capacity. The retirements were scheduled to continue. Then they stopped.

According to the US Energy Information Administration, owners planned to retire 12.3 gigawatts of generating capacity in 2025 and actually retired only 4.6 gigawatts, the smallest annual figure since 2008. Of an anticipated 8.0 gigawatts of coal specifically, only 2.6 gigawatts came offline. The reason the EIA gives is direct: the Department of Energy issued emergency orders that postponed the retirement of large coal plants. Three environmental research groups, Environment America, the Frontier Group, and the US PIRG Education Fund, found that roughly 40 percent of the coal retirements and fuel switches planned for the end of 2025 did not happen.

A December 2025 investigation by DeSmog identified 15 specific coal plants that postponed their retirement dates after January 2025. Their roughly two dozen coal-fired generators emitted more than 68 million tons of carbon dioxide in 2024, more than the total emissions of Delaware, Maryland, and Washington, DC combined. DeSmog found that nearly 75 percent of those plants had been on track to close within two years.

The stated reason for keeping them open is the AI buildout. Energy Secretary Chris Wright, a former fracking executive, has repeatedly cited winning the AI race as the rationale for re-investing in coal. The utility Dominion, which already leads the country in data center development, told regulators it does not anticipate retiring any of its existing coal plants until at least 2045. The Craig Station in Moffat County, Colorado is the cleanest illustration. Two days before the 446-megawatt Craig Unit 1 was set to retire, the DOE ordered it to keep running. Tri-State, the cooperative that operates the unit, said it had been preparing the retirement for five years. The Colorado Public Utilities Commission had already reviewed the shutdown and found it would not harm grid reliability. The order came anyway.

The cost is not only carbon and money. Greenpeace, analyzing the five plants the DOE had ordered to stay open, cited an estimate that those plants cause 124 deaths per year, based on 2019 emissions data. Coal plants emit fine particulate matter, sulfur dioxide, and nitrogen oxides, pollutants tied to asthma, heart disease, and premature death. Every month a plant scheduled for retirement keeps running is a month of emissions that the retirement was supposed to end.

There is a legal fight underway over whether this is even lawful. On May 15, 2026, the US Court of Appeals for the DC Circuit heard oral arguments in the challenge to the Campbell order. Michigan, Minnesota, and Illinois, joined by Earthjustice representing public interest groups, argued that the DOE exceeded its authority. It is the first of the legal challenges to the coal-retention orders to reach oral argument, and the decision, expected later this year, could set the precedent for the rest.

The Turbines Nobody Permitted

Coal is the old infrastructure held open. The new infrastructure is being built in a way that tells the same story faster.

In Southaven, Mississippi, just across the state line from Memphis, Elon Musk's company xAI built a power plant to run its Colossus 2 data center. The plant is a field of gas turbines. According to the Mississippi Department of Environmental Quality, xAI now operates 46 turbines at the site, up from 18 when the company arrived, classified by xAI as temporary-mobile units. The turbines can generate up to 420 to 495 megawatts. The entire city of Southaven, population roughly 56,000, peaks at about 180 megawatts on the hottest afternoon of the year. The turbine farm produces more than twice the power of the city it sits inside, and vents the byproducts into the same air.

On April 14, 2026, the NAACP, represented by the Southern Environmental Law Center and Earthjustice, filed a Clean Air Act lawsuit against xAI and its subsidiary MZX Tech in the US District Court for the Northern District of Mississippi. The 71-page complaint alleges xAI installed and operated the turbines with no air permit. The numbers in the filing are not small. The turbine fleet has the potential to emit more than 1,700 tons of smog-forming nitrogen oxides per year, which the complaint says likely makes it the single largest industrial source of nitrogen oxides in the 11-county Memphis metropolitan area. It also has the potential to release up to 180 tons of fine particulate matter, 500 tons of carbon monoxide, and 19 tons of formaldehyde, a known carcinogen, every year. The Environmental Protection Agency's threshold for triggering a major-source pollution review is 100 tons per year of nitrogen oxides in a region already failing air standards. The xAI fleet potential is more than seventeen times that line.

The region was already struggling. The American Lung Association gave both Shelby County, Tennessee and DeSoto County, Mississippi a failing grade for ozone pollution, and Memphis has been named an asthma capital. In January 2026 the EPA confirmed that large mobile gas turbines like these are stationary sources that require federal permits. On March 12, 2026, the EPA's own mobile monitoring van recorded a peak one-hour nitrogen dioxide reading of 138 parts per billion at the site, against a federal standard of 100. A named plaintiff in the case, a Whitehaven resident named Easter Knox, stated that her grandson, whose school sits four-tenths of a mile from the turbines, had three asthma attacks in the months after they switched on.

The honest version of the argument has to concede something here. The AI buildout is real, the electricity demand is real, and a grid operator facing a genuine shortfall has a hard problem to solve. Keeping a plant online for a true emergency is a defensible act. The point is not that every coal megawatt must come offline tomorrow regardless of consequence. The point is narrower and it is documented. In Michigan the state regulator said there was no emergency. In Colorado the state commission said the retirement was safe. The turbines in Southaven were installed with no permit and no public notice at all. These were not the careful exercise of emergency authority. They were the cost of the AI buildout shifted onto whatever airshed was closest, and the people in that airshed were not asked.

The Air Is Not A Line Item

Air pollution does not appear on the invoice. The data center customer pays for compute, billed in clean precise units. The nitrogen oxides drifting over a school in Whitehaven are not in that bill. The 68 million tons of carbon dioxide from 15 coal plants that were supposed to close are not in that bill. The 124 estimated deaths a year are not in that bill. The cost is real, it is large, and it lands entirely outside the transaction, on people who never opened an account.

This is the same structure as the electricity story and the water story. The electricity bill went up because the grid is absorbing data center load. The drinking water dropped because data centers drink it by the hundreds of millions of gallons. Now the air. Three resources, three bills, one pattern. The hyperscale model concentrates computing into a building, concentrated computing demands concentrated power, and concentrated power in 2026 means a coal plant held past its retirement or a turbine farm with no permit. The concentration is the cause. The public cost is the effect.

Distributed computing does not produce this effect, because it never concentrates the load. A laptop running an inference workload draws a few watts from a wall socket. It does not require a 1,500-megawatt coal plant held open, or 46 gas turbines in a field next to a town. The marginal air pollution from spreading that workload across millions of devices is, against the scale of a kept-open coal plant, effectively nothing. The heat sheds into rooms already heated and cooled. There is no turbine farm because there is no concentrated demand to feed.

The coal plant in Michigan was supposed to close on May 31, 2025. The order keeping it open expires today. Whether it closes now depends on a court, on an agency, and on whether the AI buildout keeps being treated as a reason to override every state regulator who looked at the evidence and said the plant was not needed. The DOE orders are on the docket. The Clean Air Act complaint is 71 pages and filed. The air over Whitehaven is not a line item, and it is being spent anyway.