Data Center Registry
Swarm Systems Marshalltown Data Center
Marshalltown, Marshall County County, Iowa
Swarm Systems Marshalltown Data Center is a proposed data center in Marshalltown, Iowa (Marshall County County), operated by Swarm Systems. The public record puts it at announced August 26, 2026, 21 acres, a reported $345 million investment. It is the subject of active public debate, with hearings, petitions, or organized opposition on record.
Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.
Facility record
Proposed
- Operator
- Swarm Systems
- Facility type
- Data center
- Location
- Marshalltown, Marshall County County, IA
- Coordinates
- 42.0560, -92.8970 (approximate)
- Power capacity
- Not established from a public source
- Land
- 21 acres
- Investment
- $345 million
- Announced
- August 26, 2026
- Utility
- Not established from a public source
- Power source
- Grid
- Cooling
- Closed loop
- Water use
- Not established from a public source
- Jobs
- 50 permanent
- Public subsidy
- Not established from a public source
- Community reception
- Contested
- Source confidence
- Reported by at least one credible outlet or filing
Timeline from the record
Newest first. Record entries come from the filings and reports the registry cites. Coverage entries are headlines from publisher feeds we monitor daily, linked to the outlet; last checked September 14, 2026.
- August 26, 2026ProposedSwarm Systems CEO Amir Atefi presented to the Marshalltown City Council seeking a purchase contract for 21 acres of city-owned land in the Edgewood Industrial Park to conduct due diligence; the council passed a 120-day data center moratorium the same night. Source: Times Republican
Opposition and litigation at this site
Yes. Swarm Systems Marshalltown Data Center in Marshalltown, Marshall County County, Iowa is contested. Hearings, public comment, petitions, or organized opposition are on record, and no lawsuit has been filed so far. Marshalltown City Council adopted a 120-day data center moratorium (expires Nov.
How the community has taken it
Reception is a sourced signal, not an editorial judgment: contested means active public debate is on record, with hearings, petitions, or organized opposition, without litigation.
Marshalltown City Council adopted a 120-day data center moratorium (expires Nov. 23, 2026, extendable 60 days) while drafting land-use rules; a public petition opposing data centers in Marshalltown is circulating. The developer said it supports the moratorium and is requesting no tax incentives.
Power and water
Developer told the council there would be no on-site power generation; the facility would tie into the electrical grid.
Developer stated annual water use under 500,000 gallons using a closed-loop recirculation system on roughly a 10-year cycle.
Notes on the record
Building size is reported inconsistently: the Times Republican account of the Aug. 26, 2026 council presentation says 125,000 sq ft, while Business Record reports 150,000 sq ft. Jobs were described as a 50-60 permanent range; the lower bound is recorded. No MW capacity was stated. Coordinates are approximate, the point sits at the JBS Marshalltown industrial site, next to which the Edgewood Industrial Park city-owned parcels lie; no specific parcel has been identified publicly.
What the record does not establish, and the document that would
In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.
- Power capacity in megawatts
- Tax abatements or other public subsidy
- Which utility serves it
Which document closes each gap
- Power capacity in megawatts
- The utility's large load service agreement, the interconnection request in the grid operator's queue, or the electrical site plan in the permit file.
- Tax abatements or other public subsidy
- The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.
- Which utility serves it
- The electric service agreement or the utility's filing with the state public utility commission.
Have one of these documents? Send it to us and we will add it to the record with attribution.
Other sites within 30 miles
Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.
- MiningStore Union Township Site · Union · MiningStore16 mi · Permitted · 5 MW · Mixed reception
- MiningStore Grundy Center Facility · Grundy Center · MiningStore22 mi · Cancelled
- MiningStore Eldora Township Site · Eldora · MiningStore24 mi · Permitted · 5 MW · Mixed reception
Questions people ask about this site
Is there opposition to the Swarm Systems Marshalltown Data Center in Marshalltown?
Yes. Swarm Systems Marshalltown Data Center in Marshalltown, Marshall County County, Iowa is contested. Hearings, public comment, petitions, or organized opposition are on record, and no lawsuit has been filed so far. Marshalltown City Council adopted a 120-day data center moratorium (expires Nov.
Has anyone filed a lawsuit over the Swarm Systems Marshalltown Data Center?
No lawsuit over Swarm Systems Marshalltown Data Center appears in the record we track as of September 16, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.
How much water does Swarm Systems Marshalltown Data Center use?
No water withdrawal figure for Swarm Systems Marshalltown Data Center is on record here. Cooling is recorded as closed_loop, which is the strongest available clue: closed loop and air cooled plant draw far less than evaporative cooling. We leave the number blank rather than estimate one.
Who operates Swarm Systems Marshalltown Data Center, and how big is it?
Swarm Systems is the operator on record. No capacity figure is on record for this site. The site is recorded at 21 acres.
How to cite this page
SueDataCenters.org Data Center Registry, "Swarm Systems Marshalltown Data Center," updated September 16, 2026, https://suedatacenters.org/data-centers/swarm-systems-marshalltown-ia.
Facility data from Compute Atlas (E. Kubiak), version 1.34.0 (September 21, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/swarm-systems-marshalltown-ia, retrieved October 1, 2026.
Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.
Sources for this record
As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.
- 1.City council passes second and third readings of data center moratorium, hears from prospective developer · Times Republican · retrieved September 16, 2026
- 2.Iowa communities grapple with regulating data centers as development spreads · Business Record · retrieved September 16, 2026
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