Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/61166
EIA plant 61166
Wrangell · Wrangell Petersburg · AK
Tyee Lake Hydroelectric Facility
Operated by Southeast Alaska Power Agency
Published location
Where is Tyee Lake Hydroelectric Facility?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
56.216403, -131.504344
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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 AK 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.
111,215
211,291
313,168
411,109
510,614
65,964
711,304
812,058
910,826
109,332
119,490
129,605
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 | 11,215 |
| 2 | 11,291 |
| 3 | 13,168 |
| 4 | 11,109 |
| 5 | 10,614 |
| 6 | 5,964 |
| 7 | 11,304 |
| 8 | 12,058 |
| 9 | 10,826 |
| 10 | 9,332 |
| 11 | 9,490 |
| 12 | 9,605 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 11,215 MWh |
| 2 | 11,291 MWh |
| 3 | 13,168 MWh |
| 4 | 11,109 MWh |
| 5 | 10,614 MWh |
| 6 | 5,964 MWh |
| 7 | 11,304 MWh |
| 8 | 12,058 MWh |
| 9 | 10,826 MWh |
| 10 | 9,332 MWh |
| 11 | 9,490 MWh |
| 12 | 9,605 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| UNIT1 | Conventional Hydroelectric | WAT | 11.3 | OP |
| UNIT2 | Conventional Hydroelectric | WAT | 11.3 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
61166
Sector
Commercial Non-CHP
Water source
Lake
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 Tyee Lake Hydroelectric Facility 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 Tyee Lake Hydroelectric Facility
Variation in the published months
Across 12 numeric monthly generation entries, 3 has the highest recorded value (13,168 MWh) and 6 the lowest (5,964 MWh). Their difference is 7,204 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 |
|---|---|---|---|---|---|
| UNIT1 | Conventional Hydroelectric | 11.3 | 11.3 | 11.3 | 2.0 |
| UNIT2 | Conventional Hydroelectric | 11.3 | 11.3 | 11.3 | 2.0 |
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.