- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Holly: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Holly
Power plant · Oil
Key facts
Power plant · Oilran 0% of 2025 Standby- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1993
- Net generation, 2025
- 2 MWh
- Grid
- 25 kV to Town of Holly - (CO) (WACM)
- Location
- Prowers County, Colorado
- Operated by
- Town of Holly - (CO)
Output
- Oil
Details
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- Technology
- Oil source: “Petroleum Liquids”
- Age
- 33 years since 1993
- Heat rate
- 8,500 Btu/kWh 2025
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Eia status |
|
| Fuel burned (MMBtu), 2025 | 17 |
| Capacity factor, 2025 | 0.000 |
| Heat rate (Btu/kWh), 2025 | 8,500 |
| Net generation (MWh), 2025 | 2 |
| Balancing authority code | WACM |
Retirement
- Capacity retired
- 2.6 MW
- Generators retired
- 3
- Capacity still in service
- 2.9 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Natural Gas Internal Combustion Engine | 0.2 MW | Retired | December 2002 |
| 2 | Natural Gas Internal Combustion Engine | 0.2 MW | Retired | December 2002 |
| ARPA | Petroleum Liquids | 2.2 MW | Retired | October 2006 |
By technology
| Technology | Retired | Scheduled to retire |
|---|---|---|
| Petroleum Liquids | 2.2 MW | |
| Natural Gas Internal Combustion Engine | 0.4 MW |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 25 kV
- Transmission or distribution system owner
- Town of Holly - (CO)
- Balancing authority
- Western Area Power Administration - Rocky Mountain Region
- NERC region
- WECC
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Ownership
2 companies3| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| Town of Holly - (CO) | Operator | EIA-860M | ||
| Arkansas River Power Authority | Owner | 54.0% | Dec 31, 2025 | EIA-860 |
| Town of Holly - (CO) | Owner | 8.1% | Dec 31, 2025 | EIA-860 |
Timeline
- Stated Unit ARPA scheduled to retire, 2.2 MW · EIA-860M
- Stated Units 1, 2 scheduled to retire, 0.4 MW · EIA-860M
- In service · EIA-860M
Sources
4 sourcesSources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules