Harmony Energy Park (Geronimo Power data center)
Geronimo Power · Mapleton, ND · United States
Facility record
- Lifecycle
- ProposedSource-reported lifecycle
- Location precision
- approximate
- Address as listed
- Not published
- Coordinates
- 46.8919, -97.0498
- Serving utility, source-reported
- Otter Tail Power Company
- Operational capacity, source-reported
- Not published
- Planned capacity, source-reported
- 540 MW
- Source record updated
- 2026-10-26
Source-reported capacity; not metered consumption. Review underlying documents and notes. Planned capacity may include future phases and is not added to operational capacity here. The source may use facility, grid-feed or IT capacity definitions; consult the linked documents.
Coordinate precision is a source label, not an independent parcel survey. A marker does not confirm utility territory or establish an effect on residential bills.
Reported lifecycle history
- Proposed
Geronimo Power filed a conditional use permit application with Harmony Township for a data center near the Bison Substation north of Mapleton
Underlying source
Source notes
Proposed powered data park in Section 15 of Harmony Township, about seven miles northeast of Casselton and north of Mapleton, near the Bison Substation (off 32nd St SE and 160th Ave SE). It would have two main buildings set at least a mile from any home on a ~640-acre footprint, about 80% of which is expected to stay green space. Construction would take two to four years. No end user is named. Coordinates are the Mapleton town point (approximate). Geronimo also holds a land option in neighboring Durbin Township; it is not recorded separately because no project there has been filed.
540 MW at peak demand. Geronimo says new generation would power the site: a 200 MW solar farm under construction next to the Bison Substation, a proposed 200 MW battery facility, wind and possibly natural gas. Otter Tail serves the area, and its large-load tariff is before the ND PSC. Minnkota says its planned ~400 MW gas plant in the same township is not meant to serve this data center.
Sources and provenance
- 2nd Fargo-area data center would use double the power of Harwood site (North Dakota Monitor via KFGO) · source retrieved 2026-10-26
- Minnkota plans gas-fired power plant in Cass County, adding to energy development · source retrieved 2026-10-26
- Cass County residents learn more about proposed Harmony Energy Park data center · source retrieved 2026-10-26
- Geronimo Power CEO offers six-month data center pause ahead of disputed Harmony Township moratorium vote · source retrieved 2026-10-26
Power Wars capture: 2026-11-02. Compute Atlas, CC BY 4.0. Entries are not independently verified by Power Wars unless stated.