Bonner Data Center
Update 6/12/2026:
Missoula County planning staff have reviewed another application from Krambu and deemed it insufficient. The latest application and letter from the County are available under the Documents tab to the right. Krambu will need to submit a complete application before a hearing with the Missoula Consolidated Land Use Board can be scheduled.
The Bonner Data Center project developer is continuing to finalize materials for presentation to the Missoula County Consolidated Land Use Board (MCCLUB). At this time, the public hearing schedule is to be determined, pending receipt of a complete application.
You can sign up to follow this project at the right-hand side on this page. When the new date is determined for the MCCLUB public hearing, project followers and commenters will receive an email.
This project will be reviewed by the Missoula County Consolidated Land Use Board (MCCLUB). This land use board holds their public hearing meetings on the first Wednesday of the month at 6 p.m. in the Sophie Moiese room of the Missoula County Courthouse. There may occasionally be a second meeting in the month, which will usually be the third Wednesday. There will be prior notice. These meetings are always open to the public.
The meeting agenda and related documents will be published on the Consolidated Land Use Board page
Project Overview
Missoula County is reviewing a proposed data center at 9314 Bonner Miller Road as a Special Exception described in Section 11.6.D. of the Missoula County Zoning Regulations. The property is zoned for heavy industrial use.
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 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.
Project summary
Current step: Missoula County has requested more information
Application status: Fifth application submitted; Missoula County has requested more information.
Expected hearing: Postponed until further notice
- This project will be reviewed by the Missoula County Consolidated Land Use Board (MCCLUB). This land use board holds their public hearing meetings on the first Wednesday of the month at 6 p.m. in the Sophie Moiese room of the Missoula County Courthouse. There may occasionally be a second meeting in the month, which will usually be the third Wednesday. There will be prior notice. These meetings are always open to the public.
What is being reviewed in this project proposal?
The Special Exception review is required when the use, because of location, scale, required infrastructure or other potential impacts, requires a special degree of consideration and control to ensure such uses are consistent and compatible with the overall community character and whether potential impacts can be avoided or mitigated.
This page has been updated to reflect revised staff analysis of the scope of review. The Missoula County Consolidated Land Use Board (MCCLUB) must not approve a special exception unless and until they find the project application demonstrates all of the following:
The proposed use or development will be compatible with and will not substantially injure the value of adjoining property.
The proposed use preserves the character of the district, and the property is suitable for the proposed use (e.g. can meet the bulk and dimensional standards without requiring a variance).
The proposed use promotes the purpose and intent of the TIF Special District, where appropriate.
Substitute or additional design standards will preserve and protect the area’s architectural and aesthetic qualities.
In reviewing a Special Exception application MCCLUB shall give due consideration to the following:
a) Access, traffic, parking demand, non-motorized transportation and onsite vehicle circulation
b) Dedication and development of streets, rights of way, and public use areas, such as adjoining sidewalks
c) Impacts on or of public and private utilities or services
d) Proposed siting of any new structures necessary to accommodate the use and their relationship to adjoining and surrounding properties
e) Recreation opportunities and open lands available to serve the use
f) Natural resource protections
g) Landscaping and screening requirements
h) Signage and street lighting
i) Noise, vibration, outdoor lighting and other on and offsite impacts from the use
j) Frequency of use and hours of operation
k) Area of land necessary and adequacy of the site to accommodate the use and meet the intent of the district and character of the neighborhood
l) How the proposed use addresses the purpose of the TIF Special District intended to attract, retain, grow and develop secondary value-adding industries
m) Any other unique or relevant circumstances related to the property.
The burden to demonstrate compliance with these criteria falls to the applicant, not the County or MCCLUB.
Reasonable and appropriate conditions may be required to ensure that any potentially injurious effect of the Special Exception on adjoining properties, the character of the neighborhood, the purpose and intent of the TIF Special District, or the health, safety and general welfare of the community will be minimized. Conditions much be based on the criteria for review.
Zoning compliance permit
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 - deemed incomplete
- 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 - deemed incomplete
- The applicant submitted additional materials. County staff continued reviewing the application and identified remaining information needed for completeness.
May 11, 2026: Third Special Exception Application - deemed incomplete
- The applicant submitted a special exception application. Applicant has notified the county that a new application packet will be made available.
June 1, 2026: Fifth Special Exception Application - deemed incomplete
- The applicant submitted a special exception application. County staff determined that more information was needed before public review could begin.
Date to be determined based on application completeness: Public Notice Period
- The County will mail notices to property owners within 500 feet, publish a legal notice, and post notices near the property.
Date to be determined based on application completeness: Consolidated Land Use Board Hearing
- The Consolidated Land Use Board is expected to consider the Special Exception request.
Date to be determined based on application completeness: Possible Permit Review
- If approved, Krambu may then apply for a Zoning Compliance Permit and other required permits.
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.
I vehemently urge Missoula County Planning to reject this proposal. This data center offers no benefits to the community and has the potential to cause irreparable financial and environmental harm.
1) No employment: Data centers employ very few people. We need an industry in Bonner that can offer employment opportunities for the community.
2) Noise: Data centers generate low frequency noise. Studies have concluded low grade noise leads to detrimental health consequences.
3) Increased utility prices for the rest of us. Their promise to “buy renewable energy” is an accounting term and not a direct supply. Companies meet renewable requirements through energy credits or contracts, not by directly powering their facility with new local clean energy.
4) Water use unsustainable - Water contamination and use in an area with a limited water table. They consume and pollute too much water.
The reason it goes in there is so they can pull thousands of gallons of water from the Blackfoot, to cool the equipment in use…. ABSOLUTELY NOT! Leave our rivers alone and go somewhere else.
Please understand that the losses to our environment and in particular the river ecosystem that will be forever adversely altered, can’t be undone. What AI has to offer us is minuscule when compared to what will be lost in our Montana way of life, by the money grab of a few. Say NO to this data center
Data centers all over thr us, more than 50% failed to even get built. Its a gut check and shotgun spread. They're trying to see what sticks where. Apathy is not an option in this scenario. We need clean water more than we need AI slop. The building owner needs to consider other venues, perhaps a farmers market or flea market for time being.
I absolutely do not support an AI facility at the confluence of the Clark Fork and Blackfoot Rivers. We have no need to endanger another waterway for absolutely nothing but greed. Our Montana constitution mandates protection of our water. To give vague information regarding long term impacts to our water is a joke. No good will come of this facility. Protect our small community. Do the right thing Missoula, keep AI facilities out of Missoula and the rest of our small towns.
Upon attending the most recent Bonner city council meeting and hearing from some of the folks with the land use board and the Dept of health (?), it is abundantly clear how unequipped Montana and Missoula county are to handle proposals for AI data centers without federal and state regulations.
There are too many unknowns due to lack of research on AI centers and a dearth of information from Krambu themselves, for our land use board to feel comfortable with approving this project. It is unnerving to hear that a project may still be approved as long as it falls within the confines of zoning laws when our county government and officials know how deeply unpopular this development would be. It is doubly unnerving for the remainder of our state, that a progressive county with strict zoning laws may still allow a data center to be built. I fear that this would lead to a proliferation of AI centers along with those planned or proposed in Butte and Broadview.
It is also extremely disappointing to know that the public will essentially be unable to hold the commissioners, the land board, or our politicians accountable for something that is deeply unpopular with the vast majority of people if they were to approve the data center.
I am absolutely against this project for all the aforementioned reasons and would further suggest Missoula Co. implement conservation standards that would prevent similar project proposals in the future. We should not have to keep fighting the same battles to protect our natural resources!
I have a home directly across the street from the Mill.
I am horrified that this project will have a dramatically negative impact on our water, power, mental health and way-of-life. Not to mention the drastic effects it will have on the schoolchildren at Bonner Elementary.
Please consider this lovely community and decline this project!!
The consequences of this project will lead to more inflation of energy costs, pollute our rivers and environment, threaten our aquifer, etc, and offer no benefit to the local economy. It is a just plain ugly project for our beautiful communities, Bonner and downstream. The County must say no.
This project is of no benefit to the general public, is a huge draw on state water resources, and will result in ecological catastrophe if implemented. The County should refuse this project in its entirety.
I strongly urge the Missoula County Consolidated Land Use Board to deny this proposal. This project is not in the communities best interests. The future of Missoula County’s natural resources are uncertain and are stressed. They are only going to get worse. A project such as this would only stress our natural resources further. We live in a time where we need to conserve our resources, not allow them to be experimented with.
The fact that the reps for the company thought it was fine to be half-hearten and vague about their resource consumption is enough to decline their proposal. From the Berkeley Pit to the Smurfit-Stone Mill, these extraction companies never show the communities upfront what messes will be left for us to clean up. Let’s not wait and find out. It is hard to claim that this project is sustainable. Sadly most e-waste is not recyclable. It would be terrible to see our community contribute to more carbon emissions by enabling companies to extract the minerals to make the batteries, and then throw it back into the soil. If the company were to go bankrupt, will the infrastructure be sitting around? Or will it be shipped somewhere else on the planet to rot and pollute the soil.
Almost every concern a person could have for this data center are high risk concerns. They are not mild or moderate concerns, they are great big huge concerns. What’s worse, is that each concern a person could have about a data center is too new to humanity to be fully understood. If in a decade we find that there are harms to human health, will Krambu still be around to pay their medical bills? If their water-cooling system, that has never been deployed at the proposed scale, doesn’t have the results they promised, do we get to revoke their permit? I do not want this community to become a test dummy for this corporation or this industry. It is unfair to place the burden of such magnitude of uncertainty on the community.
Additionally, the moral and societal implications of supporting an industry that may lower cognitive abilities, memory, and exploit and pirate off of others skills and creativity are so vast, they could not possibly be accounted for or responsibly planned for.
The priorities of this community are for community health, student health, environmental stewardship, local business, and to work to lower housing costs, and responsible planning. Please do not let this cooperation take advantage of our community. We are demanding that this project be not approved.
Clean water is the lifeblood of Montana. The Krambu AI data center raises many issues, and water is a critical one. Without protection, the AI data center could put the Blackfoot River in a tightening vice, choking it between consumption and contamination.
Consumption:
When it comes to water consumption, timing is everything.
Krambu claims that using a closed-loop system will minimize its water consumption. That is credible --- but we need full transparency around these claims. For example, Sabey Data Centers, has said its proposed Butte data center will use about 16 million gallons of water annually, equating that to about the impact of a 100 room hotel. Sabey Data Centers, like Krambu, is claiming that its use of a closed-loop system will cut its water consumption. What is important to understand is that nearly all 16 million gallons will be used in July and August, when the temperatures are hottest and when the rivers and landscape need that water the most (see slides 17 and 18 of this presentation: https://www.buttedatacenterinfo.com/_files/ugd/261bfd_85c42a797eba456d9436b509ddefdb14.pdf).
Again, timing is everything.
A 100-room hotel typically uses between 300,000 and 600,000 gallons of water per month, assuming a standard occupancy rate of approximately 60–70%. Taking the average of 450,000 and then dividing 16,000,000 by that average equals about 36. Divide that by 2 for two months (July and August) and you arrive at 18. So, the Sabey Data Center water consumption is actually like adding eighteen 100 room hotels for the two months that matter most when it comes to water consumption. I would like to know if Krambu's projections are similar. In Krambu's case, water will be drawn from onsite wells, and we know that groundwater and surface water are connected (https://morrisoninstitute.asu.edu/content/study-confirms-groundwater-pumping-drying-arizona-rivers). Groundwater and surface water are connected, meaning groundwater level changes significantly impact above-ground water in rivers and streams.
Contamination:
Forever chemicals are forever.
Regarding contamination, Krambu claims its closed-loop system uses a "food safe" propylene glycol fluid. That may be true, but the public needs verification. It needs independent testing of Krambu’s cooling fluids, and Krambu should pay for that. Until Krambu provides full disclosure of its cooling fluid recipe and allows independent testing, we should be very hesitant to believe it is "food safe." Material Safety Data Sheets for propylene glycol-based cooling fluids for data center cooling can be found online. One popular brand, DOWFROST™ LC 25 Heat Transfer Fluid, which markets its fluid as a, “prediluted 25% propylene glycol solution in water with a purpose-built corrosion inhibitor package designed to help protect system metals while maintaining reliable heat transfer performance,” has a Material Safety Data Sheets disclosing it poses an inhalation risk. Here's a sample: "Hazards: Suspected of damaging fertility or the unborn child." Given the proximity to residential housing and an elementary school, and of course, the Blackfoot River, verification that Krambu’s cooling fluids are non-toxic is necessary.
The use of "dielectric fluids" for cooling---fluids that are thermally conductive but not electrically conductive—is booming in AI data centers. These fluids are fluorocarbon-based, meaning they are "forever chemicals." AI chips run really, really hot. Cooling these chips is a new frontier. They generally demand direct, liquid cooling. This very recent data center industry article highlights the top 10 cooling companies' current solutions: https://datacentremagazine.com/top10/top-10-liquid-cooling-companies. They all depend on strange liquids. These cooling fluid markets are expanding into the billions of dollars. The city of Kalispell currently needs an $18 million investment in new wells and water transmission to shield the public from PFAS contamination (https://deq.mt.gov/files/Water/WQInfo/Documents/SRF/DWSRF/Kalispell%20PFAS_FONSI-EA_Public%20Notice.pdf). The source of Kalispell’s drinking water contamination is currently unknown. Bonner needs verification that its residents' drinking water supplies will not be threatened by dangerous forever chemicals. Not now. Not in the future. These are chemicals that are hazardous to human health at a parts per trillion scale. That’s a scale of one drop of liquid in twenty Olympic swimming pools.
Unanswered Questions:
The Bonner community must ask itself if this the best long-term use of the Bonner mill site, given the: low employment benefits, potential resource demands, uncertainty about impacts to affordable and reliable electricity, uncertainty about future expansion and potential for larger energy and water use if expanded, unclear data tenants (Krambu says they’d like “biomedical AI clients” but that they are not closing the door on any clientele).
Bonner needs transparency and certainty. Krambu has not provided either.
Clean water is Montana's lifeblood. There are many issues with the Krambu proposal, water is a critical one. The AI data center could place the Blackfoot River in a tightening vice, choking it between consumption and contamination.
Consumption:
When it comes to water consumption, timing is everything.
Krambu claims that using a closed-loop system will minimize its water consumption. That is credible --- but we need full transparency around these claims. For example, Sabey Data Centers, has said its proposed Butte data center will use about 16 million gallons of water annually, equating that to about the impact of a 100 room hotel. Sabey Data Centers, like Krambu, is claiming that its use of a closed-loop system will cut its water consumption. What is important to understand is that nearly all 16 million gallons will be used in July and August, when the temperatures are hottest and when the rivers and landscape need that water the most (see slides 17 and 18 of this presentation: https://www.buttedatacenterinfo.com/_files/ugd/261bfd_85c42a797eba456d9436b509ddefdb14.pdf).
Again, timing is everything.
A 100-room hotel typically uses between 300,000 and 600,000 gallons of water per month, assuming a standard occupancy rate of approximately 60–70%. Taking the average of 450,000 and then dividing 16,000,000 by that average equals about 36. Divide that by 2 for two months (July and August) and you arrive at 18. So, the Sabey Data Center water consumption is actually like adding eighteen 100 room hotels for the two months that matter most when it comes to water consumption. Are Krambu's needs similar? In Krambu's case, water will be drawn from onsite wells, and we know that groundwater and surface water are connected (https://morrisoninstitute.asu.edu/content/study-confirms-groundwater-pumping-drying-arizona-rivers). When groundwater level changes, it significantly impacts above-ground water in rivers and streams.
Contamination:
Forever chemicals are forever.
Regarding contamination, Krambu claims its closed-loop system uses a "food safe" propylene glycol fluid. That may be true, but the public needs verification. It needs independent testing of Krambu’s cooling fluids, and Krambu should pay for that. Until Krambu provides full disclosure of its cooling fluid recipe and allows independent testing, we should be very hesitant to believe it is "food safe." Material Safety Data Sheets for propylene glycol-based cooling fluids for data center cooling can be found online. One popular brand, DOWFROST™ LC 25 Heat Transfer Fluid, which markets its fluid as a, “prediluted 25% propylene glycol solution in water with a purpose-built corrosion inhibitor package designed to help protect system metals while maintaining reliable heat transfer performance,” has a Material Safety Data Sheets disclosing it poses an inhalation risk. Here's a sample: "Hazards: Suspected of damaging fertility or the unborn child." Given the proximity to residential housing and an elementary school, and of course, the Blackfoot River, verification that Krambu’s cooling fluids are non-toxic is necessary.
The use of "dielectric fluids" for cooling---fluids that are thermally conductive but not electrically conductive—is booming in AI data centers. These fluids are fluorocarbon-based, meaning they are "forever chemicals." AI chips run really, really hot. Cooling these chips is a new frontier. They generally demand direct, liquid cooling. This very recent data center industry article highlights the top 10 cooling companies' current solutions: https://datacentremagazine.com/top10/top-10-liquid-cooling-companies. They all depend on strange liquids. These cooling fluid markets are expanding into the billions of dollars. No community wants to be the guinea pig for these new chemicals.
The city of Kalispell currently needs an $18 million investment in new wells and water transmission to shield the public from PFAS contamination (https://deq.mt.gov/files/Water/WQInfo/Documents/SRF/DWSRF/Kalispell%20PFAS_FONSI-EA_Public%20Notice.pdf). The source of Kalispell’s drinking water contamination is currently unknown. Bonner needs verification that its residents' drinking water supplies will not be threatened by dangerous forever chemicals. Not now. Not in the future. These are chemicals that are hazardous to human health at a parts per trillion scale. That’s a scale of one drop of liquid in twenty Olympic swimming pools.
Unanswered Questions:
The Bonner community must ask itself if this the best long-term use of the Bonner mill site, given the: low employment benefits, potential resource demands, uncertainty about impacts to affordable and reliable electricity, uncertainty about future expansion and potential for larger energy and water use if expanded, and the unclear data tenants (Krambu says they’d like “biomedical AI clients” but that they are not closing the door on any clientele).
Bonner needs transparency and certainty. Krambu has not provided either.
I strongly oppose this proposal which will only benefit Krambu, while threatening our aquifer, the Blackfoot River, our statewide electric costs, and the local communities of Bonner and East Missoula. Krambu's explanation of how they plan to mitigate the heat and waste water generated from this data center's operation are utterly inadequate. Stand Strong, Missoula!
Absolutely against the data center... Taking resources from our community and our wildlife is unacceptable. I hope missoula county understands the tax payers do not want this.
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.
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.
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.
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.
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.