- Wind & solar
- Storage
- Bioenergy
- In development
- Under construction
- Retired
- 10 · 100 · 1,000 MW
Map
- Wind & solar
- Storage
- Bioenergy
- In development
- Under construction
- Retired
Patterson Pass: location and 15 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Patterson Pass
Power plant · Wind
Key facts
Power plant · Windran 16% of 2013 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1985
- Net generation, 2013
- 30,604 MWh
- Grid
- 21 kV to Pacific Gas & Electric Co (CISO)
- Location
- Alameda County, California
- Operated by
- EDF Renewable Asset Holdings, Inc.
Output
Details
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- Technology
- Wind source: “Onshore Wind Turbine”
- Age
- 41 years since 1985
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| Balancing authority code | CISO |
Retirement
EIA-860M September 2026StatusEvery generator EIA lists at this plant has retired. As of EIA-860M for September 2026.- Retired
- October 2014
- Capacity retired
- 21.9 MW
- Generators retired
- 2
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| WND1 | Onshore Wind Turbine | 8.1 MW | Retired | October 2014 |
| WND2 | Onshore Wind Turbine | 13.8 MW | Retired | October 2014 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 21 kV
- Transmission or distribution system owner
- Pacific Gas & Electric Co
- Balancing authority
- California Independent System Operator
- NERC region
- WECC
Transmission lines within 25 km (10)
Connection points within 25 km (4)
Can the connection be reused?
A plant that retires usually leaves its substation, transmission connection and interconnection agreement behind, and those may be reusable by a new project at the same site. FERC Order No. 845 lets an interconnection customer use surplus interconnection service at an existing site, and some transmission providers' tariffs let a replacement resource take over a retiring unit's interconnection service, usually within a set time after the retirement. Whether any such right still exists here, who holds it and on what terms depends on the owner, the transmission provider and timing; this page does not establish any of that.
Ownership
4 companies4| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| EDF Renewable Asset Holdings, Inc. | Operator | EIA-860M | ||
| Enxco Windfarm IV | Owner | 30.0% | 31 Dec 2025 | EIA-860 |
| Volkar, Coombs Partners | Owner | 40.0% | 31 Dec 2025 | EIA-860 |
| Havoco Wind Energy, LLC | Owner | 30.0% | 31 Dec 2025 | EIA-860 |
Timeline
- Stated Units WND1, WND2 scheduled to retire, 21.9 MW · EIA-860M
- In service · EIA-860M
Sources
7 sourcesSources EIA-860M · GEM · LBNL · CAISO · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- LBNL — A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024 (OEDI submission 8742)Yin, Nait Belaid & Heleno (2026), Lawrence Berkeley National Laboratory, OEDI, CC BY 4.0: A Harmonized Geospatial Dataset of U.S. Transmission Lines: Linking FERC Form 1 and HIFLD, 1994-2024. Modified by Inframation: HIFLD-side fields only, names re-cased, coordinates rounded.
- CAISO Public Queue ReportSource: California ISO
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Mulqueeney Wind Energy Under construction | Wind | 2.2 km | 80 |
| Sand Hill A Filed | Wind | 4.7 km | 13.5 |
| TESLA Power Project Postponed | Gas, combined cycle | 4.9 km | 1,322 |
| Rooney Ranch Filed | Wind | 5.2 km | 21 |
| Sand Hill B Filed | Wind | 6.1 km | 17 |
| Sand Hill C Contracted | Wind | 7.7 km | 80.8 |
| Tracy BESS Under construction | Storage | 11.0 km | 40 |
| Zeus BESS Contracted | Storage | 11.1 km | 200 |
| Buena Vista Energy LLC Postponed | Storage | 12.4 km | 100 |
| Tres Vaqueros Wind Farms LLC Withdrawn | Wind | 13.6 km | 28.3 |
| Aramis I Solar Project × 2 units Under construction | Storage | 14.4 km | 200 |
| Tracy Renewable Power Plant Under construction | Biomass | 18.3 km | 5 |
| NorCal FPV 1 Under construction | Solar | 19.0 km | 10 |
| NorCal FPV 1 (Pond 2) Under construction | Solar | 19.0 km | 1.8 |
Sources
- CAISO Public Queue ReportSource: California ISO
- EIA-860M Preliminary Monthly Electric Generator Inventory