Residents of a township in Wayne County, Michigan, brought the same two complaints to the planning department that their counterparts have brought in a dozen states: the water, and the noise. This week the department approved Google’s master site plan anyway, clearing another local hurdle for a large data center outside Detroit.
The approval covers the general layout of the campus rather than the details of construction. It follows objections from residents about how much water the cooling systems would draw and how much sound the equipment would produce at the property line.
Wayne County contains Detroit and a ring of suburbs and exurbs that have lost manufacturing jobs and gained warehouses. Land is cheap, power is available and the state has spent years courting large electricity customers. Those conditions have made southeastern Michigan a candidate for the kind of facility that used to cluster in northern Virginia.
The sequence of approvals matters more than any single vote. A data center needs a site plan, sometimes a rezoning, a water agreement, a stormwater permit, an air permit for backup generators and an interconnection agreement with the utility. Each is handled by a different body on a different calendar, and each can stop the project.
Residents who oppose a project quickly learn that the decisions are scattered. A township can approve a site plan while the county controls the drain, the state controls the air permit and the utility controls whether the power arrives. Objections raised at one hearing do not carry to the next.
The water complaint is the one that travels furthest. Many large data centers cool with evaporative systems that consume water steadily, and a facility drawing millions of gallons a month from a local aquifer or municipal system is visible to neighbors in a way that electricity demand is not. Operators have moved toward closed-loop cooling in dry regions, at a cost in capital and efficiency.
Noise comes from equipment that runs all night. Chillers, fans and the diesel generators that back up the servers produce a low, constant sound that carries across open ground, and residents near other campuses have described it as a hum they cannot escape. Buffer zones and sound walls reduce it. Neither eliminates it.
Google has said it designs its campuses to meet local requirements and has pointed to water recycling and air-cooled designs at some sites. The company has not published a water consumption figure for this project, and the planning approval does not settle it.
Local officials have their own reasons to say yes. A data center pays property taxes, employs a small permanent staff and requires no new roads to speak of. It also brings construction work for two years and, in some states, a payment in lieu of taxes that a school district can budget against.
The costs land on the grid. A campus that draws hundreds of megawatts needs transmission capacity that a utility may not have, and the upgrades are paid by ratepayers unless a special contract shifts them. Several states have started to rewrite the rules for who pays when a single customer’s demand doubles a substation’s load.
Michigan’s regulators have been working through that question as the state’s coal plants retire. The grid operator for the region has warned that demand growth from data centers is arriving faster than new generation and transmission, and that the queue for interconnection is now a multi-year process.
Analysts who track data center siting said the binding constraint has moved from land to power. Companies can find acreage and local permits. What they cannot easily find is a utility with capacity to spare and a regulator willing to approve the cost allocation. That is why projects in the Midwest are announced with their own generation deals attached.
The pattern favors places with excess capacity and patience. Michigan has both, along with a governor who has advertised the state’s water and its industrial workforce. It also has townships where a large facility is the biggest thing to happen in decades, and where the planning commission is three neighbors and a lawyer.
For Google, the approval is one line in a long list. The company has committed tens of billions of dollars to data center construction, and it needs each project to clear the same sequence of local votes. A township’s site plan does not determine whether the campus gets built. The interconnection agreement does.
Residents who opposed the project have not exhausted their options. The details that follow a site plan, including water contracts and building permits, come with their own hearings, and the state’s environmental review can be invoked. Objections that failed at the layout stage can be raised again at the point where a number is attached to them.
What the vote does show is how the next several years will go for the industry. Demand for computing capacity is growing faster than any single jurisdiction can absorb, and every project will be argued in a room where the people who live nearby have the floor and the company has the lawyers. The water and the noise will be the same in every state.
