Hennepin ethanol plant data center (Putnam County)
Hennepin, Putnam County, IL
A new data center, Hennepin ethanol plant data center (Putnam County), has been announced in Hennepin, IL. Reported by a local resident (Putnam County group PCCAT, contact form, Oct 1 2026): a data center is being planned on the grounds of the existing ethanol plant in Hennepin, the Marquis Energy dry-mill plant just north of the village. Putnam County, the smallest county in Illinois, adopted a six-month moratorium on data center applications on May 26, 2026 (Ordinance 2026-O-01). Developer, size and MW not public; unconfirmed in reporting. Coordinates approximate (the plant area north of Hennepin).
Project status
- Announced
- Permitting
- Under constructionNot yet
- OperationalNot yet
Recorded changes
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Community sentiment
Should this project be built?
What’s next
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Latest news
Nothing written about this data center yet.
Stories about it, and about Putnam County, IL, land here.
Records and documentation
Illinois state legislation
- ICC Docket Nos. 25-0677/25-0679 (Consolidated) - ComEd Large Demand Project Applicant/Customer (LDPAC) TariffComEd tariff creating a formal "Large Demand Project Applicant/Customer" class for data centers/large loads ≥50MW, approved March 2026 with graduated security deposits ($1M for 50-200MW, +$500k per additional 100MW). Cites 75+ pending large-load interconnection requests totaling 28,000+MW, exceeding ComEd's all-time system peak.Download
- Project Vector Annexation and Development AgreementAnnexation and development agreement setting terms for the 'Project Vector' data center development in DeKalb, Illinois.Download
- HB2756 - Data Center Cost-Shifting Protection ActProtects ratepayers from cost-shifting caused by data centers.Download
- SB2181 - Illinois Data Center Energy and Water Reporting ActRequires all data centers to annually report energy and water consumption beginning January 1, 2026.Download
- SB58 - Sales and Use Tax Law exemption for certified data center facilitiesCreates sales/use tax exemptions for certified data center facilities.Download
- SB57 - Large-Load Data CentersRegulates large-load data centers.Download
- HB2026 - Data center industrial zoning ordinance review requirementRequires localities to review and amend zoning ordinances for data centers under industrial zoning rules.Download
- HB1301 - Limits data center electricity cost risk and imposes moratoriumLimits costs/risks associated with data center electricity use and imposes a moratorium.Download
- Data Center Zoning OrdinanceLogan County, Illinois zoning ordinance for data centers, approved by the board June 1, 2026.Download
- SB4206 - LOC GOVT-DATA CENTERDescription comingDownload
- HB5755 - MUNI CD-DATA CENTER REFERENDUMDescription comingDownload
- SB4016 - HYPERSCALE DATA CENTERSDescription comingDownload
- SB3761 - DATA CENTERS-VARIOUSDescription comingDownload
- SB0094 - DATA CENTERS-FOREIGN OWNERSHIPDescription comingDownload
- SB3830 - DATA CENTERS-VARIOUSDescription comingDownload
- SB3578 - DATA CENTERS-FOREIGN OWNERSHIPDescription comingDownload
- HB5513 - HYPERSCALE DATA CENTERSDescription comingDownload
- SB4203 - DCEO-DATA CENTERSDescription comingDownload
Site details
- Operator
- Not announced
- County
- Putnam County, IL
- Address
- Hennepin, IL
- Stage
- Announced
Capacity and size: not on file
Map
Photos
ComEd customers could pay billions for data center hookups, warns utility watchdog groupShaw Local Enewspapers
An $8 billion Treasury break helped Meta’s tax rate hit 2%. Senators want data center tax answersFortune
The states with the fewest and most data centers, rankedBusiness Insider
Finns Are Seething After Google Illegally Toppled 250,000 Trees for a Data CenterMother Jones
Google offer to pay others to help data center powerArkansas Online
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