Siphon Power Project
Deschutes County, Oregon · EIA plant ID 50980 · Operator: Central Oregon Irrigation Dist
Nameplate5MWSummer 5 MW
Generators2in service
Net generation19GWh12 mo to Dec 2025
Capacity factor40%hydro units, summer MW
Heat rate—thermal plants only
First online1989
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) |
|---|---|---|---|
| 2001 | 21 | 46.7% | — |
| 2002 | 0 | 0.0% | — |
| 2003 | 0 | 0.0% | — |
| 2004 | 0 | 0.0% | — |
| 2005 | 0 | 0.0% | — |
| 2006 | 0 | 0.1% | — |
| 2007 | 0 | 0.1% | — |
| 2008 | 20.4 | 42.9% | — |
| 2009 | 28.4 | 60.1% | — |
| 2010 | 22.1 | 46.7% | — |
| 2011 | 28.7 | 60.6% | — |
| 2012 | 38.6 | 81.5% | — |
| 2013 | 26 | 55.0% | — |
| 2014 | 25.6 | 54.1% | — |
| 2015 | 25.4 | 53.6% | — |
| 2016 | 21.5 | 45.4% | — |
| 2017 | 26.4 | 55.8% | — |
| 2018 | 22.1 | 46.8% | — |
| 2019 | 17 | 35.9% | — |
| 2020 | 17.3 | 36.5% | — |
| 2021 | 15 | 31.8% | — |
| 2022 | 13.3 | 28.1% | — |
| 2023 | 15.6 | 32.9% | — |
| 2024 | 15.6 | 33.0% | — |
| 2025 | 19 | 40.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Conventional Hydroelectric | HY | 2.7 | 2.7 | Aug 1989 | Operating | — | coming soon |
| GEN2 | Conventional Hydroelectric | HY | 2.7 | 2.7 | Aug 1989 | Operating | — | coming soon |
Owner / operator
Operator: Central Oregon Irrigation Dist. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Central Oregon Irrigation Dist | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Bend | 1 MW | 3.5 km |
| Bear Creek Solar Center | 10 MW | 8 km |
| OSLH, LLC | 10 MW | 8.7 km |
| NorWest Energy 2, LLC | 10 MW | 9 km |
| Juniper Ridge Hydroelectric Project | 5 MW | 13.1 km |
| Tumbleweed Solar, LLC | 10 MW | 19.3 km |