Data last collected:
PowerPlantFactsEvidence report · prepared 19 October 2026https://powerplantfacts.com/entity/6433
EIA plant 6433
Metaline · Pend Oreille · WA
Boundary
Operated by City of Seattle - (WA)
Published location
Where is Boundary?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
48.987111, -117.347847
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 WA 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.
1220,146
2242,583
3286,878
4249,073
5401,290
6434,249
7261,164
8135,421
9138,906
10269,165
11199,563
12181,845
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 | 220,146 |
| 2 | 242,583 |
| 3 | 286,878 |
| 4 | 249,073 |
| 5 | 401,290 |
| 6 | 434,249 |
| 7 | 261,164 |
| 8 | 135,421 |
| 9 | 138,906 |
| 10 | 269,165 |
| 11 | 199,563 |
| 12 | 181,845 |
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 220,146 MWh |
| 2 | 242,583 MWh |
| 3 | 286,878 MWh |
| 4 | 249,073 MWh |
| 5 | 401,290 MWh |
| 6 | 434,249 MWh |
| 7 | 261,164 MWh |
| 8 | 135,421 MWh |
| 9 | 138,906 MWh |
| 10 | 269,165 MWh |
| 11 | 199,563 MWh |
| 12 | 181,845 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 55 | Conventional Hydroelectric | WAT | 239.4 | OP |
| 56 | Conventional Hydroelectric | WAT | 239.4 | OP |
| 51 | Conventional Hydroelectric | WAT | 180.5 | OP |
| 54 | Conventional Hydroelectric | WAT | 180.5 | OP |
| 52 | Conventional Hydroelectric | WAT | 161.5 | OP |
| 53 | Conventional Hydroelectric | WAT | 158.4 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
6433
Sector
Electric Utility
Water source
Pend Oreille 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 Boundary 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 Boundary
Variation in the published months
Across 12 numeric monthly generation entries, 6 has the highest recorded value (434,249 MWh) and 8 the lowest (135,421 MWh). Their difference is 298,828 MWh. Missing months have not been treated as zero.
Reading the MW column
In the 6 numeric rows displayed in this table, MW ranges from 158.4 (53) to 239.4 (55, 56). The difference is 81 in the column's stated units. This summary covers the displayed rows and retains the table's period and scope.
Generator capacity in different operating conditions
| Generator ID | Technology | Nameplate MW | Summer MW | Winter MW | Minimum load MW |
|---|---|---|---|---|---|
| 51 | Conventional Hydroelectric | 180.5 | 180.5 | 180.5 | 20.0 |
| 52 | Conventional Hydroelectric | 161.5 | 161.5 | 161.5 | 20.0 |
| 53 | Conventional Hydroelectric | 158.4 | 158.4 | 158.4 | 20.0 |
| 54 | Conventional Hydroelectric | 180.5 | 180.5 | 180.5 | 20.0 |
| 55 | Conventional Hydroelectric | 239.4 | 232.0 | 232.0 | 5.0 |
| 56 | Conventional Hydroelectric | 239.4 | 232.0 | 232.0 | 5.0 |
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.