- Combustion
- Retired
- 10 · 100 · 1,000 MW
Map
- Combustion
- Retired
Mandalay: location and 2 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Mandalay
Power plant · Gas, steam turbine
Key facts
Power plant · Gas, steam turbineran 3% of 2017 Retired- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1959
- Net generation, 2017
- 151,953 MWh
- Location
- Ventura County, California
- Operated by
- GenOn California South, LP
Output
- Gas
Details
Who’s behind it
- Owner
- NRG Energy, Inc
Interested in this project?
Set an alert Book a call Join the beta
Our team gets you what you need.
Beta: private project space · data room · readiness check
- Technology
- Gas, steam turbine source: “Natural Gas Steam Turbine”
- Age
- 67 years since 1959
All 2 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| EPA greenhouse gas reporting (GHGRP) |
|
| 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
- February 2018
- Capacity retired
- 574 MW
- Generators retired
- 3
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 03 | Natural Gas Fired Combustion Turbine | 138 MW | Retired | February 2018 |
| 1 | Natural Gas Steam Turbine | 218 MW | Retired | February 2018 |
| 2 | Natural Gas Steam Turbine | 218 MW | Retired | February 2018 |
By technology
| Technology | Retired | Scheduled to retire |
|---|---|---|
| Natural Gas Steam Turbine | 436 MW | |
| Natural Gas Fired Combustion Turbine | 138 MW |
Grid
EIA-860Grid fieldsAs the plant reported them to EIA-860 (Schedule 2).- Balancing authority
- CISO
Transmission lines 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
2 companies2| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| GenOn California South, LP | Operator | EIA-860M | ||
| NRG Energy, Inc | Owner | 100.0% | Dec 31, 2023 | EPA GHGRP |
Timeline
- Stated Units 03, 1, 2 scheduled to retire, 574 MW · EIA-860M
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · LBNL · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Sources
- EIA-860M
- LBNLYin, 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.
- EIASource: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EPA Greenhouse Gas Reporting Program — facility register with parent-company shares (Envirofacts pub_dim_facility; FLIGHT)
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Mission Rock Energy Center Hybrid Postponed | Gas, combustion turbine | 17.5 km | 300 |
| Santa Paula Energy Storage Postponed | Storage | 23.8 km | 5 |
Sources EIA-860M