Siphon Drop Power Plant
Imperial County, California · EIA plant ID 57364 · Operator: Yuma County Water User's Association
Nameplate4MWSummer 4 MW
Generators2in service
Net generation12GWh12 mo to Dec 2025
Capacity factor30%hydro units, summer MW
Heat rate—thermal plants only
First online1987
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), hydro units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2010 | 22.9 | 59.4% | — |
| 2011 | 12.8 | 33.1% | — |
| 2012 | 15.1 | 39.2% | — |
| 2013 | 14.1 | 36.6% | — |
| 2014 | 15.2 | 39.4% | — |
| 2015 | 16.2 | 42.0% | — |
| 2016 | 17.2 | 44.6% | — |
| 2017 | 14 | 36.4% | — |
| 2018 | 11.3 | 29.4% | — |
| 2019 | 14.4 | 37.3% | — |
| 2020 | 12.8 | 33.1% | — |
| 2021 | 13.8 | 35.7% | — |
| 2022 | 11.8 | 30.6% | — |
| 2023 | 12.8 | 33.2% | — |
| 2024 | 11.6 | 30.0% | — |
| 2025 | 11.6 | 30.1% | — |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Conventional Hydroelectric | HY | 2.2 | 2.2 | Sep 1987 | Operating | — | coming soon |
| 2 | Conventional Hydroelectric | HY | 2.2 | 2.2 | Dec 1987 | Operating | — | coming soon |
Owner / operator
Operator: Yuma County Water User's Association. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Yuma County Water User's Association | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Yuma Cogeneration Associates | 63 MW | 5.9 km |
| Pilot Knob | 33 MW | 8.8 km |
| Yucca | 422 MW | 9.6 km |
| Arizona Western College PV | 5 MW | 16.5 km |
| Foothills Solar Plant Hybrid | 73 MW | 24.1 km |
| Yuma Solar + Storage | 140 MW | 24.5 km |