Bonner Data Center

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Project overview

Missoula County has received an application for a proposed data center facility to be located at the Bonner Mill site at 9314 Bonner Mill Road. The project is being reviewed through a Special Exception process because it is located near residential properties.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for data center operations. This means most of the development would occur inside the existing structure, with no major expansion of the building footprint. Interior improvements would include constructing specialized rooms to house computer servers and supporting equipment.

The primary new exterior components of the project would be cooling systems to regulate equipment temperature. These cooling units, sometimes referred to as cooling towers, would be installed next to the existing building. According to the application, these systems would operate continuously to support the data center.

Data centers are facilities that store and process digital information and typically operate 24 hours a day with minimal on-site staffing. The applicant has indicated that after construction, traffic to and from the site would be limited to periodic maintenance and service visits.


Project process

The site is zoned Industrial Center, Heavy. A data center would be an allowed use on the property. However, Missoula County has additional zoning regulations that apply to data centers and cryptocurrency operations throughout the county. These regulations include:

  • All power for the operation must come from a new renewable energy source (meaning it has not been on the market yet)

  • The operation must recycle all electronic waste

  • Because it is located within 500 feet of a residential area, the proposal must go through a special exception review to ensure impacts to nearby properties are addressed, including traffic, noise, lighting, landscaping, and screening and buffering

Because the project is located near residentially zoned and developed properties, the County’s review is focused on how the data center and associated equipment may affect nearby residents. Key itemss under review include potential noise, visual impacts, lighting, and other operational characteristics of the cooling systems and equipment.

County staff are currently reviewing the application for completeness and have requested additional information from the applicant to better understand these potential impacts and how they may be mitigated. Once the application is deemed complete, it will proceed through a public review process, including opportunities for public comment.

The project will be subject to review by the Missoula County Consolidated Land Use Board, not the county commissioners. While the land use board at times only has authority to make recommendations to the commissioners, the board does have final decision-making authority in some cases, including zoning variances, zoning special exceptions and administrative action appeals.

The land use board has authority to approve or deny a proposal to locate a data center within 500 feet of residential use, but the applicant must still secure a zoning compliance permit from the County ensuring they meet the requirements to recycle e-waste and supply the operation with new renewable energy, as well as other zoning regulations, as required by the cryptocurrency/data center zoning, as well as all other zoning regulations for the property.


What’s next?

The consolidated land use board hearing is currently scheduled for Wednesday, July 1, at 6 p.m. The meeting will take place in person in the Sophie Moiese Room of the Missoula County Courthouse, 200 W. Broadway, and virtually via Microsoft Teams. The agenda and information on how to join the meeting virtually will be available online prior to the meeting.

The meeting date is subject to change if a complete application is not submitted in time for the June 3 meeting.

Community members are encouraged to stay informed and participate in the review process. Additional project materials and updates will be posted as they become available.

Project overview

Missoula County has received an application for a proposed data center facility to be located at the Bonner Mill site at 9314 Bonner Mill Road. The project is being reviewed through a Special Exception process because it is located near residential properties.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for data center operations. This means most of the development would occur inside the existing structure, with no major expansion of the building footprint. Interior improvements would include constructing specialized rooms to house computer servers and supporting equipment.

The primary new exterior components of the project would be cooling systems to regulate equipment temperature. These cooling units, sometimes referred to as cooling towers, would be installed next to the existing building. According to the application, these systems would operate continuously to support the data center.

Data centers are facilities that store and process digital information and typically operate 24 hours a day with minimal on-site staffing. The applicant has indicated that after construction, traffic to and from the site would be limited to periodic maintenance and service visits.


Project process

The site is zoned Industrial Center, Heavy. A data center would be an allowed use on the property. However, Missoula County has additional zoning regulations that apply to data centers and cryptocurrency operations throughout the county. These regulations include:

  • All power for the operation must come from a new renewable energy source (meaning it has not been on the market yet)

  • The operation must recycle all electronic waste

  • Because it is located within 500 feet of a residential area, the proposal must go through a special exception review to ensure impacts to nearby properties are addressed, including traffic, noise, lighting, landscaping, and screening and buffering

Because the project is located near residentially zoned and developed properties, the County’s review is focused on how the data center and associated equipment may affect nearby residents. Key itemss under review include potential noise, visual impacts, lighting, and other operational characteristics of the cooling systems and equipment.

County staff are currently reviewing the application for completeness and have requested additional information from the applicant to better understand these potential impacts and how they may be mitigated. Once the application is deemed complete, it will proceed through a public review process, including opportunities for public comment.

The project will be subject to review by the Missoula County Consolidated Land Use Board, not the county commissioners. While the land use board at times only has authority to make recommendations to the commissioners, the board does have final decision-making authority in some cases, including zoning variances, zoning special exceptions and administrative action appeals.

The land use board has authority to approve or deny a proposal to locate a data center within 500 feet of residential use, but the applicant must still secure a zoning compliance permit from the County ensuring they meet the requirements to recycle e-waste and supply the operation with new renewable energy, as well as other zoning regulations, as required by the cryptocurrency/data center zoning, as well as all other zoning regulations for the property.


What’s next?

The consolidated land use board hearing is currently scheduled for Wednesday, July 1, at 6 p.m. The meeting will take place in person in the Sophie Moiese Room of the Missoula County Courthouse, 200 W. Broadway, and virtually via Microsoft Teams. The agenda and information on how to join the meeting virtually will be available online prior to the meeting.

The meeting date is subject to change if a complete application is not submitted in time for the June 3 meeting.

Community members are encouraged to stay informed and participate in the review process. Additional project materials and updates will be posted as they become available.

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We all need to come together to stop this proposed data center. It has no place in such a beautiful area, near the Kettlehouse Amphitheater. It would ruin this concert setting with the constant noise, let alone the peoples that live there peaceful enjoyment. The power draws are too massive and the precious water use is too much. We must stop this!!!

Sandra About 22 hours ago

I strongly believe a data center in Bonner or anywhere in Missoula County is a huge mistake. It's energy needs equals that of 100,000 homes; the current size of Missoula. The constant noise pollution to an area that includes nearby homes, an elementary school and a world-class music venue is unacceptable. Lastly, the data center will be next to most iconic river in the west. Why do we also trash the things we love-beauty, nature, communities and silence.

sr 1 day ago

I am absolutely opposed to approving ANY KIND of noisy, energy-consuming data center in my backyard...right on the Blackfoot River--the river that runs through it, of all places!! Stop this nonsense.

RLH 1 day ago

We don't need a data center in Bonner, 100 megawatts is a huge amount of power and what company has stood by the initial plan. It will add to the thermal load of the Blackfoot as well. Its a waste of water and energy.

MNM624 2 days ago

I strongly believe we need to reject this request to permit an AI data center. The impacts to the water, and our temperatures is enough to want it stopped in my opinion. I've researched and communities that allowed these are so angry and regretful. We are opening up our precious environment to be damaged to fill a build so they get the rent they need. This will long effect our communities far beyond what you can predict. We must not allow this to happen.

Secret 2 days ago

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I wans cured from herpes 2 days ago

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I wans cured from herpes 2 days ago

One of the blessings of living in Montana is that the great majority of Montanans value our land and waters. We must protect them at all cost.
Data centers are for convenience. They do not bring jobs other than a few jobs for construction, and after that it runs on its own the only use for these data centers is for people who already have lots of money to make more money. Yes, they provide a service using AI but do we really need AI?
Recent studies have shown and businesses have expressed their opinion that they will be using more and more AI instead of humans to do work. This is not a Montana value. It is already hard enough to find a decent job in this state without having it taken over by AI.
And to add insult to injury to have the data center, providing the AI to be disrupting our environment and impacting it in a negative way. Community after community that already has an AI data center says that they are seeing large increases in their power bills, especially electricity, they also are very concerned that there is insufficient water because data centers require high water usage.

For these reasons, I am very against having a data center in any part of Montana, but particularly in Bonner, which is along the Blackfoot river.

Dr. Hayes 2 days ago

I strongly oppose this. In addition to the obvious negative environmental impacts, the constant infrasonic and low frequency sound waves generated by a data center is very damaging to humans and wildlife.

Jess_Hy 3 days ago

We do NOT need a data center in Missoula.
As someone in college who uses AI every day, I understand the benefits—but I also understand the cost. And right now, we are ignoring the real impact these data centers have on the places we love.
Missoula is not just another location on a map. It’s part of the headwaters of the West. Our rivers, lakes, and ecosystems are not expendable—and they should not be treated like they are.
Data centers require massive amounts of fresh water for cooling. That’s drinkable water being pulled from our environment and reduced in quality and availability. In a place where our waterways support wildlife, recreation, and entire downstream ecosystems, that is not something we can afford to risk.
This isn’t just about technology—it’s about responsibility.

We should be asking:
Where is this water coming from?
What happens to it after it’s used?
How will this impact our rivers long-term?
Why here, of all places?

We need real answers before anything gets built.
Missoula deserves better than rushed decisions that prioritize expansion over sustainability. If we are going to continue advancing AI and technology, we need to do it in a way that does not come at the expense of our environment.
Protect our rivers. Protect our ecosystems. Think before we build.

marie406 4 days ago

These data centers are not good for our people or our environment. Please consider rejecting their permit.

Kat 4 days ago

I STRONGLY OPPOSE the proposed Bonner data center, and I urge the Missoula County Board of County Commissioners to deny this Special Exception application.

This project is fundamentally incompatible with the Bonner community, the surrounding environment, and the infrastructure that area residents depend on — and repackaging an industrial-scale operation inside an existing building footprint does not change that reality.

Groundwater. This is the most critical issue and the one that should be disqualifying on its own. Data centers require enormous volumes of water for cooling — often millions of gallons per year. The Clark Fork and Blackfoot River corridors, and the aquifer systems that feed them, are not an unlimited industrial resource. They support agriculture, wildlife habitat, and drinking water for area residents. Once depleted or compromised, groundwater cannot simply be restored. The county has an obligation to protect this resource for current and future generations, not subordinate it to a speculative industrial tenant.

Infrastructure mismatch. The Bonner area roads, utilities, and community services were not designed to support heavy industrial data center operations. The construction phase alone — and the ongoing maintenance traffic, electrical infrastructure buildout, and supporting logistics — will impose costs and impacts on neighbors who have no say in those burdens and no share in any economic benefit.

The Special Exception bar must be high. The fact that this proposal requires a Special Exception because it is located near residential properties is not a procedural footnote — it's the central issue. The Special Exception process exists precisely to protect communities like Bonner from incompatible uses. The burden should be on the applicant to demonstrate beyond doubt that this use will not harm neighbors, degrade water resources, or overwhelm local infrastructure. That burden has not been met.

This is not opposition to economic development. The Bonner Mill site represents a genuine redevelopment opportunity. But the right use is one that is scaled appropriately to the site, the infrastructure, and the community — not a hyperscale industrial operation that would generate massive external costs while delivering limited local benefit.

Please deny this application.

twmargot 4 days ago

No AI data centers in Montana

Lee Cox 4 days ago

I strongly oppose the proposed data center in Bonner.

After attending the first public forum, we all left with more concerns than answers. Community members raised legitimate questions about water use, energy demand, environmental impacts, noise, infrastructure strain, emergency preparedness, and long-term impacts to the Bonner community, yet every single one of these questions were not adequately answered. A project of this scale should not be moving forward while basic information remains unclear or unavailable to the public.

The lack of transparency throughout this process is deeply concerning. Meaningful public input requires actually providing clear, direct answers so the community can make informed comments and decisions. So far, that standard has not been met.

Montana’s Constitution explicitly protects our right to a clean and healthful environment. That includes responsible stewardship of our water and natural resources, especially as communities across the West face increasing pressures related to growth, drought, and infrastructure demands.

The Land Use and Planning Board has a responsibility not only to evaluate this project on paper, but to listen to the people who will live with its consequences. The overwhelming concern and opposition voiced by community members should not be minimized or treated as a procedural hurdle.

Until there is full transparency, complete answers to public concerns, and clear evidence that this project will not compromise local resources or community wellbeing, this proposal should not move forward. It is truly horrifying that this proposal is even being considered. If approved it will show that the values we claim to have here were never true and I will no longer be proud of being a Missoulian. If data centers are approved here my family will relocate out of state because what’s the point in staying when we can’t afford it and our local government won’t protect us or our resources?

WeAreWaterProtectors 5 days ago

At the first meeting in town at the church the company rep failed to bring with him a design engineer who could intelligently discuss the cooling system being vaguely described by the company publications. A "closed loop" system is great, but what's the cooling medium? Air cooled? Water cooled? What's the source of the water? Ground coupled? Dx chiller?

What is their anticipated annual domestic water consumption?

Will they be touching the river at all, in any way? That includes filling the cooling system or supplying cooling towers with water. That includes dumping anything at all into the river because "it's just water."

They were unable/unwilling to address these questions at the public meeting. These questions need answers.

LKJones 5 days ago

I am opposed to the proposed data center development in Bonner and urge decision-makers to carefully consider its long-term impacts on our community. Bonner is a small, rural area with limited infrastructure, and a data center represents an outsized form of industrial development that is incompatible with the character of this valley. These facilities place significant demands on power, water, and transportation systems that were never designed for such intensive use. Of particular concern is groundwater. Data centers often require substantial water resources for cooling, and in an area where groundwater is already finite and essential for residents, agriculture, and the Clark Fork/Blackfoot Rivers, this poses a serious risk. Once groundwater levels are depleted or contaminated, the damage cannot simply be undone.
In addition, the increased traffic from construction, ongoing maintenance, and supporting industrial uses would strain local roads and reduce safety for residents who rely on them daily. Development should be planned and scaled appropriately to ensure it benefits the community rather than overwhelming it. This is not opposition to all growth, but a call for growth that respects the limits of our infrastructure, protects our water resources, and preserves the rural nature of Bonner. A large data center fails to meet those standards and would permanently alter the community in ways that many residents do not support.

Joshua V 5 days ago

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User1001 6 days ago

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User1001 6 days ago

I am a 4th generation Missoulian born and raised. NO, we do not want a Data Center here. No we don’t care what supposed “opportunities” to the economy it will bring. No, we will not allow these companies or private equity conglomerates to pollute, drain, and destroy our homes. We will attend any meetings with said businesses to ensure they don’t come back here ever again.

That_Big_Buck 7 days ago

As stewards of the land in Missoula County, it would be incredibly irresponsible of the commissioners to approve this data center or any data center. In addition to ruining the River and the water supply for the residents, the noise has proven to impact animals. For instance chickens nearby data centers lay 50% less eggs, cattle, goats and sheep lose 30% of their body weight, horses and wildlife suffer from stress.

There are reports of the water sources near data centers turning milky white with massive erosion and dangerously high levels of metals including strontium. Wasn’t the area a superfund site? Millions of dollars were spent rectifying the polluted rivers and now a data center is being proposed which will be another disaster and create another superfund site.

Missoula County should be aware that all over the country data centers are being cancelled due to power shortages, Grid strains and supply chain issues, as well as massive pushback from residents.

We live in such a beautiful place. Please do the right thing and listen to your constituents and deny this data center. We do not have the right to pollute the water and take water away from residents just for greed and AI. We don’t have the right to subject wildlife and human life to the very negative affects of data centers.

Thank you for your attention to this very important issue for the residents of Missoula County and Montana, as well as wildlife and domestic animals.

EIannacone 8 days ago
Page last updated: 30 Apr 2026, 01:12 PM