Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/59438
EIA plant 59438
Orono · Penobscot · ME
Orono B
Operated by Brookfield Black Bear Hydro, LLC
Published location
Where is Orono B?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
44.884444, -68.663889
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
Equipment mix
Operating capacity by technology
Grouped from this plant’s represented generator records. Use the ME plant index for regional peers.
See the evidence
Electricity output across the year
Monthly net generation shows the seasonal shape of this plant's represented output. A negative value is retained when the source reports net consumption.
11,608
21,959
32,540
42,584
51,951
62,187
72,267
81,019
91,401
101,489
11970
121,292
MWh net generation · 2024 final edition · EIA 923 represented operating rows. 12 of 12 supplied rows shown; 0 missing values omitted. Months with no reported numeric value are omitted, not treated as zero.
Read the chart as a table
| Record | MWh net generation |
|---|---|
| 1 | 1,608 |
| 2 | 1,959 |
| 3 | 2,540 |
| 4 | 2,584 |
| 5 | 1,951 |
| 6 | 2,187 |
| 7 | 2,267 |
| 8 | 1,019 |
| 9 | 1,401 |
| 10 | 1,489 |
| 11 | 970 |
| 12 | 1,292 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 1,608 MWh |
| 2 | 1,959 MWh |
| 3 | 2,540 MWh |
| 4 | 2,584 MWh |
| 5 | 1,951 MWh |
| 6 | 2,187 MWh |
| 7 | 2,267 MWh |
| 8 | 1,019 MWh |
| 9 | 1,401 MWh |
| 10 | 1,489 MWh |
| 11 | 970 MWh |
| 12 | 1,292 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| ORB-1 | Conventional Hydroelectric | WAT | 1.3 | OP |
| ORB-2 | Conventional Hydroelectric | WAT | 1.3 | OP |
| ORB-3 | Conventional Hydroelectric | WAT | 1.3 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
59438
Sector
IPP Non-CHP
Water source
Penobscot River
Data edition
2024-final
Use this record
Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right Orono B power plant: capacity and generation | PowerPlantFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at Orono B
Variation in the published months
Across 12 numeric monthly generation entries, 4 has the highest recorded value (2,584 MWh) and 11 the lowest (970 MWh). Their difference is 1,614 MWh. Missing months have not been treated as zero.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| ORB-1 | Conventional Hydroelectric | 1.3 | 1.3 | 1.3 | 0.5 |
| ORB-2 | Conventional Hydroelectric | 1.3 | 1.3 | 1.3 | 0.5 |
| ORB-3 | Conventional Hydroelectric | 1.3 | 1.3 | 1.3 | 0.5 |
EIA-860 2024 final source. Ratings describe capacity, not actual generation or availability. Missing ratings are not zero.
Source: US Energy Information Administration Form EIA-860 2024 plant and operable-generator workbooks; archive 2024. US EIA-authored information is generally public domain; cite EIA, preserve third-party exceptions, changes and no-endorsement context. Source-specific derived data.