How much power does Mara Holdings use?

Mara Holdings has a reported power capacity of 200 MW.

Has Mara Holdings had environmental violations?

As of the latest EPA ECHO sync, no enforcement actions are on record for Mara Holdings.

Where is Mara Holdings located?

Mara Holdings is in Hannibal, Monroe County, OH.

Proposed

Mara Holdings

Q: What do data center tax breaks cost in Ohio?

Ohio reported $130.4M in Sales/use tax exemption for qualified property used in an eligible computer data center (R.C. § 122.175) for FY2024 (Ohio Department of Taxation / Office of Budget and Management). That is a statewide program figure, not attributable to one site.

Hannibal, Monroe County, OH

Source: Primary source

Mara Holdings is a proposed data center in Monroe County, OH. DataCentersExposed has documented 200 MW of reported power capacity at this site.

Reporting by Eric Keller · Updated Jun 18, 2026

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Real parent

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Operator

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Power

200 MW

Attribution & capacity confidence:mediumprimary source

Overview

source: link

Taking over existing power plant Imported from the FracTracker Alliance U.S. Data Centers Tracker after review. Details to be corroborated from primary sources.

Grid & water — why here

source: HIFLD · EPA

Nearest substation

390 ft

Unknown151772 · 138 kV

Transmission line

237 ft

138 kV line

Municipal water

Served

Ohio And Lee Twp Water Authority (modeled boundary)

The closest existing grid infrastructure and the municipal water system this location sits in — the same constraints the buildout model screens on (it won't site a campus more than ~2 km from a substation or ~5 km from municipal water). Distances are straight-line to public HIFLD/EPA features, not a metered connection.

In the news

source: Google News

Tax breaks & subsidies

source: Good Jobs First / GASB 77

No per-deal tax break is linked to this site yet. No state discloses the recipient of a data-center abatement at the facility level, so per-site deals are rare in the public record. If you have a development agreement or board resolution for this site, send it to us.

Statewide cost of this incentive

Ohio reported $130.4M in Sales/use tax exemption for qualified property used in an eligible computer data center (R.C. § 122.175) for FY2024 (Ohio Department of Taxation / Office of Budget and Management). Program-wide, not attributable to this site.

source · All Ohio subsidies →

Water use

No public record of this facility's water use. We check state withdrawal reporting for self-supplied sites; municipally supplied sites only become visible through a public-records request to the local water utility — a per-facility request tool is coming. If you have a utility document for this site, send it to us.

EPA permits & violations

source: EPA ECHO

No reported violations as of last sync.

Nearest school

source: HIFLD / NCES

The nearest public school, New Martinsville School in New Martinsville, is 1.7 mi from this site (789 students).

Schools are sensitive receptors for the noise, backup-generator exhaust, and traffic a large data center brings. Straight-line distance to the nearest public school (HIFLD/NCES, US public schools only).

Hearings timeline

No public-hearing records linked to this site yet. We surface planning-commission and board-of-supervisors dates when a record names a facility. If you know of a hearing on this site, tell us.

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