Operating

AWS CMH086 Campus (Plain City)

Amazon Web Services, a hyperscale operator, operates AWS CMH086 Campus (Plain City) in Plain City, OH. EPA record for CMH086 Campus at 8815 Warner Rd, Plain City, OH does not match any tracked Ohio data center projects; however, the generic facility name and lack of explicit data center confirmation limits confidence. Operator inferred from the AWS CMH campus code (CMH071/CMH072 are AWS campuses). (lead: epa-echo, checked 2026-09-24 by claude-haiku-4-5 and by hand) [Reviewed 2026-10-09: verified] CMH086 Campus matches AWS data center operations at Plain City, OH; datacenter.fyi lists CMH086 Campus with 25.125 MW capacity as operational. Source: https://www.datacenter.fyi/state/oh.

Aerial imagery: USGS The National Map (public domain)

Project status

Announced
Permitting
Under construction
Operational

Recorded changes

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Community sentiment

This data center is operating.

The stance question is asked on projects still ahead.

What’s next

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Tuesday, November 3
Election Day

Latest news

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Stories about it, and about Union County, OH, land here.

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Records and documentation

Ohio state legislation

PUCO Case No. 23-891-EL-AEC - New Albany Data Center (Silicon Heartland) Electric ArrangementApprovaldis.puc.state.oh.usPUCO approved Feb 2024 -- New Albany Data Center leases a substation/equipment from AEP Ohio for an 8-year term, part of the $500M Silicon Heartland Datacenter Campus build.Download
PUCO Case No. 24-0508-EL-ATA - AEP Ohio Data Center TariffApprovaldis.puc.state.oh.usFiled May 2024; PUCO adopted a settlement (July 2025) requiring 25MW+ data center customers to commit to ≥85% minimum-take of subscribed capacity, 12-year contracts, 3-year exit fee. Companion Mobile Data Center tariff in the same docket. The template several other states' tariffs since referenced.Download
PUCO Case No. 25-0958-EL-AIR - AES Ohio Rate Case (Data Center Rate Class)Approvalocc.ohio.govUnopposed settlement filed ~July 2026 creating a separate Data Center rate class for AES Ohio, tied to ~2.1GW of contracted data-center load. PUCO order expected Dec 2026.Download
Marysville Community Reinvestment Area Agreement (City Council Meeting Packet)Community benefits agreementfas.orgCommunity Reinvestment Area agreement/council packet governing tax and community terms for a Marysville, Ohio data center project.Download
HB 983 - Data Center Accountability and Citizen Protection ActLegislationdatacenterbans.comEstablishes accountability and citizen-protection requirements for data centers.Download
HF2690 - Data center water/energy use reporting and tariffsLegislationdatacenterbans.comRequires reporting and tariff requirements for water and energy use by data centers.Download
Ohio Supreme Court Case No. 2025-1458 - Appeal of AEP Data Center TariffDocumentsupremecourt.ohio.govOhio Manufacturers' Association appeal (filed Nov 2025) challenging PUCO's approval of the AEP data center tariff (24-0508-EL-ATA) as based on unreasonable assumptions. Still pending.Download
SB374 - Prohibit new data center sales tax exemptionsLegislationlegiscan.comIn committee Mar 25, 2026Description comingDownload
HB710 - Prohibit public support, limit construction of, new data centersLegislationlegiscan.comIn committee Feb 25, 2026Description comingDownload
HB646 - Create the Data Center Study CommissionLegislationlegiscan.comIn committee Jun 10, 2026Description comingDownload
HB999 - Prohibit property tax exemptions for data centersLegislationlegiscan.comIntroduced Sep 2, 2026Description comingDownload
HB957 - Prohibit new data center sales tax exemptions from being grantedLegislationlegiscan.comIn committee Jun 3, 2026Description comingDownload
SB381 - Require PUCO approval to connect data centers to electrical gridLegislationlegiscan.comIn committee Mar 25, 2026Description comingDownload

Site details

Operator: Amazon Web Services
County: Union County, OH
Address: Plain City, OH
Stage: Operating

Capacity and size: not on file

Map

Photos

Aerial imageryUSGS The National Map · public domain
Ohio Chamber gives $100K to fight a small city’s data center bancleveland.com
Ohio data center expansion linked to projected $16 billion energy costcleveland.com
Can a utility seize Ohio farmland for a private data center?cleveland.com
Ohio’s eminent domain laws let data center projects take farmlandcleveland.com
Ohio data centers: How the $16 billion electricitycleveland.com
What we learned about who pays if Ohio data-center projects don’t materializecleveland.com
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
This bill would make data centers pay their own way for powerSalt Lake City Deseret News