Announced

Overwatch Capital Resilience CMH II (Canal Winchester)

Overwatch Capital (with Idemitsu) has announced Overwatch Capital Resilience CMH II (Canal Winchester), a data center project in Canal Winchester, OH. Reported capacity is 360 MW. Overwatch Capital's 'Resilience Series' Tier III powered-shell AI campus on 226 acres in Canal Winchester, listed by dcmap.us at 360 MW and by baxtel as a multi-phase project planned for 2026 in partnership with Japanese energy company Idemitsu (part of a 1 GW U.S. program). Reports link a 350 MW Veolia-operated microgrid for an undisclosed Ohio AI campus to the project. No local approvals or construction start reported. (Source dated 2026-06-01.) [Reviewed 2026-10-09: verified] Overwatch Capital and Idemitsu officially announced partnership in November 2025 to develop 1 GW of AI data centers across 10 U.S. states including Ohio, with Resilience Columbus (CMH II) in Canal Winchester confirmed as one of two projects planned for 2026. Source: https://www.businesswire.com/news/home/20251120452347/en/Overwatch-Capital-and-Idemitsu-Form-1-GW-Partnership-to-Build-High-Density-AI-Data-Centers-Across-Ten-U.S.-States.

360 MWPlanned capacity

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Project status

Announced
Permitting
Under constructionNot yet
OperationalNot yet

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Tuesday, November 3
Election Day
Tuesday, November 3OH
Grove City Data Center Fight Pushes Ohio Voters to the Ballot Nov. 3

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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: Overwatch Capital (with Idemitsu)
County: Franklin County, OH
Capacity: 360 MW
Address: Canal Winchester, OH
Stage: Announced

Size: not on file

Map

Photos

Renderinghttps://res.cloudinary.com/hjlz68xhm/image/upload/f_auto,q_auto/v1/location-assets/file_at308v?_a=BACMTiGT
Google Street View · nearby land, not the exact site
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