| Mt. Si Substation | |
| Puget Sound Energy/DEA | |
| Seattle, Washington | |
| 138 | |
| 25 | |
| Distribution | |
| Revised station service design to use 15kV padmount switch | |
| 2011 |
| Mt. Si Substation | |
| Puget Sound Energy/DEA | |
| Seattle, Washington | |
| 138 | |
| 25 | |
| Distribution | |
| Revised station service design to use 15kV padmount switch | |
| 2011 |