Bonner Data Center

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Missoula County is reviewing a proposed data center at 9314 Bonner Mill Road. The property is zoned industrial, and the current review is focused on the proposed industrial use's potential impacts on nearby residential properties, not whether a data center is an allowed use under the zoning in this location.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for a high-performance computing (HPC) data center. 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 proposed data center would operate continuously, 24 hours a day, seven days per week, with minimal on-site staffing and relatively limited vehicle traffic associated primarily with maintenance and service visits.

The cooling system consists of a combination of adiabatic and evaporative cooling towers. The evaporative units would use water supplied from the site's existing fire suppression well rather than the domestic well system serving nearby residences. The applicant has indicated that no backup generators are proposed in the event of power outage.

The initial phase of the facility is expected to use approximately 7 megawatts (MW) of electrical power, with the potential to expand over time to utilize up to 29 MW, which is the estimated capacity currently available at the site.


May 11 - Third Application for Special Exception Application (Also found on the right hand side under documents).


Missoula County Consolidated Land Use Board (MCCLUB) public meeting: Wednesday, July 1, at 6 p.m.

  • In-person location: 200 W. Broadway, Missoula County Courthouse, Sophie Moiese Room
  • Virtual option: Residents can attend the meeting via Microsoft Teams. To join the meeting on your device, follow the links on the agenda that will be published on the Consolidated Land Use Board page.




Project summary

Current step: Special exception review

Application status: Complete application submitted; special exception in review with hearing scheduled for July 1, 2026

Expected hearing: Wednesday, July 1, at 6 p.m.

  • 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 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.


What is being reviewed in this project proposal?

The Special Exception review is focused on whether the proposed industrial use, including its equipment and operations, would be compatible with nearby residential properties and whether potential impacts can be avoided or mitigated.

If a special exception is approved, the developers must apply for a zoning compliance permit. The permit application must demonstrate compliance with the County's data center zoning regulations, including requirements for new renewable energy and e-waste recycling. Zoning compliance permits are subject to administrative review and do not go through public hearing process.


Project review timeline

March 2026: Initial Contact

  • Krambu and Missoula County Planning first discussed the proposed data center project.

March 25, 2026: First Special Exception Application

  • The applicant submitted the first Special Exception application. County staff determined that more information was needed before public review could begin.

April 28, 2026: Second Special Exception Application

  • The applicant submitted additional materials. County staff continued reviewing the application and identified remaining information needed for completeness.

May 11, 2026: Third Application for Special Exception (deemed complete)

  • The applicant has submitted a complete application. A hearing is scheduled for July 1, 2026.

Late May/Early June: Public Notice Period

  • The County will mail notices to property owners within 500 feet, publish a legal notice, and post notices near the property.

July 1, 2026: Land Use Board Hearing

  • The Land Use Board is expected to consider the Special Exception request.

July 2026 or Later: Possible Permit Review

  • If approved, Krambu may then apply for a Zoning Compliance Permit and other required permits.


MCCLUB may consider the following when reviewing this special exception:

  • Traffic and site access, pedestrian facilities
  • Noise and vibration from cooling equipment and other mechanical systems
  • Water use, water quality, wastewater discharge, and potential cooling system effects such as vapor, drift, or icing
  • Outdoor lighting and glare
  • Visual impacts and effectiveness of proposed landscaping and screening
  • Utility and infrastructure impacts
  • Emergency access, fire protection, and hazardous materials management
  • Any other circumstances relevant to compatibility with nearby residential uses


How can I participate?

Community members are encouraged to stay informed and provide public comment. Comments are most helpful when they address the topics the Land Use Board may consider during Special Exception review, especially potential impacts to nearby residential properties.

Follow this project page if you want be emailed when there are updates with this project.


Missoula County is reviewing a proposed data center at 9314 Bonner Mill Road. The property is zoned industrial, and the current review is focused on the proposed industrial use's potential impacts on nearby residential properties, not whether a data center is an allowed use under the zoning in this location.

The proposal involves reusing a portion of the former mill building commonly referred to as the planer building for a high-performance computing (HPC) data center. 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 proposed data center would operate continuously, 24 hours a day, seven days per week, with minimal on-site staffing and relatively limited vehicle traffic associated primarily with maintenance and service visits.

The cooling system consists of a combination of adiabatic and evaporative cooling towers. The evaporative units would use water supplied from the site's existing fire suppression well rather than the domestic well system serving nearby residences. The applicant has indicated that no backup generators are proposed in the event of power outage.

The initial phase of the facility is expected to use approximately 7 megawatts (MW) of electrical power, with the potential to expand over time to utilize up to 29 MW, which is the estimated capacity currently available at the site.


May 11 - Third Application for Special Exception Application (Also found on the right hand side under documents).


Missoula County Consolidated Land Use Board (MCCLUB) public meeting: Wednesday, July 1, at 6 p.m.

  • In-person location: 200 W. Broadway, Missoula County Courthouse, Sophie Moiese Room
  • Virtual option: Residents can attend the meeting via Microsoft Teams. To join the meeting on your device, follow the links on the agenda that will be published on the Consolidated Land Use Board page.




Project summary

Current step: Special exception review

Application status: Complete application submitted; special exception in review with hearing scheduled for July 1, 2026

Expected hearing: Wednesday, July 1, at 6 p.m.

  • 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 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.


What is being reviewed in this project proposal?

The Special Exception review is focused on whether the proposed industrial use, including its equipment and operations, would be compatible with nearby residential properties and whether potential impacts can be avoided or mitigated.

If a special exception is approved, the developers must apply for a zoning compliance permit. The permit application must demonstrate compliance with the County's data center zoning regulations, including requirements for new renewable energy and e-waste recycling. Zoning compliance permits are subject to administrative review and do not go through public hearing process.


Project review timeline

March 2026: Initial Contact

  • Krambu and Missoula County Planning first discussed the proposed data center project.

March 25, 2026: First Special Exception Application

  • The applicant submitted the first Special Exception application. County staff determined that more information was needed before public review could begin.

April 28, 2026: Second Special Exception Application

  • The applicant submitted additional materials. County staff continued reviewing the application and identified remaining information needed for completeness.

May 11, 2026: Third Application for Special Exception (deemed complete)

  • The applicant has submitted a complete application. A hearing is scheduled for July 1, 2026.

Late May/Early June: Public Notice Period

  • The County will mail notices to property owners within 500 feet, publish a legal notice, and post notices near the property.

July 1, 2026: Land Use Board Hearing

  • The Land Use Board is expected to consider the Special Exception request.

July 2026 or Later: Possible Permit Review

  • If approved, Krambu may then apply for a Zoning Compliance Permit and other required permits.


MCCLUB may consider the following when reviewing this special exception:

  • Traffic and site access, pedestrian facilities
  • Noise and vibration from cooling equipment and other mechanical systems
  • Water use, water quality, wastewater discharge, and potential cooling system effects such as vapor, drift, or icing
  • Outdoor lighting and glare
  • Visual impacts and effectiveness of proposed landscaping and screening
  • Utility and infrastructure impacts
  • Emergency access, fire protection, and hazardous materials management
  • Any other circumstances relevant to compatibility with nearby residential uses


How can I participate?

Community members are encouraged to stay informed and provide public comment. Comments are most helpful when they address the topics the Land Use Board may consider during Special Exception review, especially potential impacts to nearby residential properties.

Follow this project page if you want be emailed when there are updates with this project.

Let us know what you think by logging in or creating an account and submitting your comment below.

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AI data centers strain the power grid and hike up local electricity costs. This is the opposite of the Montana ethos of supporting local business and community. Krambu inc is here to take, not to give. As a born and raised Montanan, and local Missoula business owner, I’m deeply opposed to the establishment of any AI data center in Montana.

BigSkyFlies About 1 month ago

I am a Bonner resident, a parent of Bonner School students, and an employee of a Bonner organization. I do not support an AI data center in this community. AI, in its current state, is doing horrific damage to the environment, the future of creative occupations, and the souls of humanity. We are learning to outsource critical thinking, creativity, writing, and art to a plagiarism machine that produces far-worse results than human-made products and does so at the cost of our earthly resources. What a terrible thing to bring to our beautiful community. Please consider whether or not greed and short-sighted financial gains are worth sacrificing our souls for. In my opinion, we can do much, much better. Thank you for your time.

B. About 1 month ago

I do not support this data center because it will pollute our eco system and drain our grid. A data center this close to watershed is going to heat it up and cause nasty algae blooms, especially when its low. This won't just affect Bonner but everything down stream. Whatever they run that water through will end up back in our aquafier and river no matter what filters they use it will not be cost efficient to remove all what will be introduced into the water. Definitely harmful to our community. I absolutely do not support this data center.

Tammy S About 1 month ago

A better idea than a data center is an indoor flea market or event hosting. That way everyone wins. A data center this close to watershed is going to heat it up and cause nasty algae blooms, especially when its low. This won't just affect bonner but everything down stream. Whatever they run that water through will end up back in our aquafier and river no matter what filters they use it will not be cost efficient to remove all what will be introduced into the water. I think the owner should reach out to the community for alternative ideas than allowing this to occur.

Technician About 1 month ago

What a pathetic idea for our town. Clear the dollar signs out of your eyes and wake up! AI data companies should never be trusted in any capacity. They are a drain on our resources, pollute our environment, and will negatively impact the power grid. They are also completely dishonest and fail to present actual facts about the resources they consume. Also how will a data center help reduce the cost of living in Missoula? Adding a data center will continue to drive up the price of homes and cost of living in Missoula. This company will bring in new employees from out of the area that will be paid very well and will create a bigger financial imbalance in town. Any member of Missoula government that votes for a data center should be recalled immediately.

JSchultz About 1 month ago

I don't think that this project is in the community's best interest. I think that it is resource intensive and comes with a high probability of negative environmental consequence. As someone who lives nearby, I feel nervous at the thought of industry like this moving in so close to my home.

ibpete About 1 month ago

I like my water for drinking, not generating deepfakes and slop.

nervousunreal About 1 month ago

After reading the comments see no offered alternate ideas for the location, just supported reasons for I-we, dont like it. Anything going there will have an impact. So, if its not going to be something moving the region into the future, we should drop another fuel depot, recycling drop off center and a mini-mall of dispensarys- at least it woulnt sit vacant while some agency works quietly on funding for a shelter complex which will get approved without our input. If all the water/enviro change is happening, we'll have to eventually move further away from a tourism/ag base. Data is one option in a cleaner than a steel mill industry choice. Also, A.I. is letting us bloviate here so it isn't all bad...maybe. No, I dont have any financial dog in this hunt.

Brion About 1 month ago

I feel for the Mill owner, and I understand that it has been hard to find a tenant for his largest building. However, I do not want a data center in our community. After attending the first public meeting and listening to the staff of Krambu speak, I do not feel any sort of confidence that they are being upfront and have our community’s best interest in mind. Most of their answers were vague, at best, and there are still a lot of unknowns around this particular type of data center because it will be one of the first of its kind. This kind of energy sucking and truly unnecessary kind of business does not belong near a residential areas and water sheds. So much more would need to be disclosed for me to be on board with this project, and I do not have confidence that this business has any intention of that.

KHuisken About 1 month ago

As a Missoula resident, I do not want this data center. A data center in this location, or any location, puts natural resources, and in turn, local residents, at risk. Montana does not need data centers. Natural resources, water especially, are at a higher risk now more than ever before. Preventative measures are better than damage control. Listen to the people - we DO NOT want this.

Danielle Campbell About 2 months ago

There's not strong enough language in the world for how vehemently I am opposed to this project. Montanans don't need— and certainly do NOT want— this huge disaster for our Blackfoot river. We don't want this noise-polluting, energy-sucking monstrosity that will inevitably cause our already sky-high utility rates to go up.

There are other comments highlighting the ethical and social catastrophes that AI cause (see the MIT study on cognitive decline in AI users that at least one other commenter cited). That's reason enough to oppose this project that will create... just how many jobs for the community? Five? Six?

The CEO of the California-headquarted company Krambu called this an "AI factory." Call it what it really is: an urban heat island factory, a noise pollution factory, an online-disinformation factory, a cost-of-living-increasing factory... the list goes on and on.

As concerned neighbors, we are demanding that this project not be approved. There is so very little to gain, and so much to lose. Please, do the right thing for our community and do not approve this awful, awful project.

lindsayanugent_0959 About 2 months ago

We don't want or need that here! It will affect and pollute our beautiful river and lands. we will continue to fight it

Iv7thgen About 2 months ago

We don't need an AI data center in Bonner. As a Missoula resident, I am extremely wary of how plans can change from original promises, in terms of energy used, pollution expected and general impact contained. Things like this always balloon more than expected. Allowing this project opens the door to future projects getting pushed through. Once built, this will never go away. It needs to be extremely clear who is benefiting and why. If it is not clear, there is absolutely reason to be concerned.

Andrew B About 2 months ago

We should absolutely not approve this. This story has already played out across the country, with the same result every time. This will only result in higher energy prices, environmental degradation, and no notable boost to the local economy. We should take a lesson from the numerous other communities this has happened to, and not allow this project to proceed, especially on the banks on the Blackfoot river, an invaluable treasure to our community. I strongly oppose this plan.

anMTcitizen About 2 months ago

I would like to express dismay that this project is being considered. Several research studies have shown that data centers raise the temperature of the surrounding area (up to 6.2 miles away) by an average of 9.1 degrees. In an era of global warming this seems like a bad idea. Plus I doubt the residents of Bonner will be happy when they experience these higher temperatures.

Also, where is the water used to cool the center going to go? Into the river which does not bode well for fish or fishermen.

Katydid About 2 months ago

I am a constituent living in district 3, Missoula, Montana and am desperately urging you to please do everything in your power to protect our sacred lands, including forests, groundwater, air, and waterways from data centers. Though Montana has signed letters of intent to invite data centers into our state, data centers are a huge draw on public services and increase prices for local governments, residents, and municipalities to support their extreme energy usage. On top of that, these centers do little to nothing to reinvest resources or capital into the local economy. For local residents, including humans and wildlife, they create sound and light pollution, contaminate drinking water, use up valuable freshwater resources for cooling. This effectively destroys fish and wildlife habitat and ecosystems - on which many Montana residents depend for their food and livelihood - as well as reduces availability for agriculture and farming communities who depend on water to grow and raise food. Data centers in Montana would be catastrophic for every single resident. Please do everything you can to require these data centers to generate and use 100% renewable energy at the very least to reduce the financial and energy burden on your constituents.

JL135 About 2 months ago

It should not even be a question that this project needs to be cancelled.
Lack of contribution to the local community aside- this data center is going to result in infrasonic sound waves that are known to cause environmental damage and have effects on HUMAN HEALTH.
Data centers like these, however small, do not belong in populated areas. Full stop.

Essque About 2 months ago

This project meets Missoula County Zoning guidelines and is an approved use for this property. The property owners need to lease this property. It is a major portion of the property and its occupancy impacts the Mill sites overall viability. Manufacturers are not seeking this Bonner location. We have low wages, high housing costs and huge transportation costs. Ther may not be any other uses for the site except for a data center. The Mill Manager reached out to numerous manufacturers without receiving any interest. This data center will pay an enormous amount of property and business equipment tax. The Bonner School and the Rural Fire Department should be in support of this opportunity. They use minimal water, it's a closed loop system. The noise level is below Missoula County standards. The construction jobs and the data center jobs will be above manufacturing job levels. I support this project.

MLJ About 2 months ago

Please do not go forward with a proposal or contract for this project. Even if a project like this moved forward, it would take years to fully understand the environmental, energy, and community impacts of something like this - and there is already talk of this opening in June. And once its here, its here to stay, as you can read from many other communities that had data centers built in them. They often need more water and energy than initially planned or promised. The company is unclear who their client would be for the data center, and without even knowing a client, how would they be making the promises they are already making on their impact to the community? What's more, with guaranteed impacts on the community and environment, I can't imagine the company has made any guarantees about generating local jobs or giving back to the community. I understand we are in the age of rapidly developing technology with astronomically growing needs, but this site is right next to the Blackfoot, a school, and many houses. I imagine the same promises this company is making now are the same made about the Smurfit-Stone site - and yes, this mill at least provided about 400-500 jobs to the community, but now this sits as an eyesore in our valley, an almost Superfund site, and no end in sight to who will clean it up or when. Bonner would be an awful place for a similar story. https://missoulacountyvoice.com/smurfit-stone-mill-site-cleanup/news_feed/the-smurfit-stone-story

missoula2025 About 2 months ago

As a Missoula resident I strongly oppose this plan. Building a data center like this has no benefit for our community. This project would pose numerous environmental and health problems for or community and give us nothing. The amount of power required would certainly affect our power supply. The radiation from this large of a center would cause long term health problems for those living nearby. No one benefits from this except the company. Please do not let them take advantage of our community for their own profit.

Chris Woodman About 2 months ago
Page last updated: 18 May 2026, 04:36 PM