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- Operating
Mountainview Generating Station: location and 16 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Mountainview Generating Station
Power plant · Gas, combined cycle
Key facts
Power plant · Gas, combined cycleran 15% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2005
- Net generation, 2025
- 1,371,673 MWh
- Grid
- 220 kV to Southern California Edison Co (CISO)
- Location
- San Bernardino County, California
- Operated by
- Southern California Edison Co
Output
- Gas
Details
Who’s behind it
- Owner
- Edison International
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- Technology
- Gas, combined cycle source: “Natural Gas Fired Combined Cycle”
- Age
- 21 years since 2005
- Unused energy
- 7,711 GWh 2025Unused energyA lead, not a guarantee: MW × hours × (1 − capacity factor) for the latest year (EIA-923), gas, coal and oil plants only. Air-permit run-hour caps, heat rate (cost to run) and capacity-market or reliability obligations can rule it out.
- Heat rate
- 7,839 Btu/kWh 2025
All 7 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| EPA greenhouse gas reporting (GHGRP) |
|
| Fuel burned (MMBtu), 2025 | 10,752,702 |
| Capacity factor, 2025 | 0.151 |
| Heat rate (Btu/kWh), 2025 | 7,839.1 |
| Net generation (MWh), 2025 | 1,371,673.1 |
| Balancing authority code | CISO |
Retirement
EIA-860M September 2026StatusSome generators have retired; the rest of the plant is still in service. As of EIA-860M for September 2026.- Capacity retired
- 130.6 MW
- Generators retired
- 2
- Capacity still in service
- 1,036.8 MW
| Generator | Technology | Nameplate | State | Date |
|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | 65.3 MW | Retired | December 2002 |
| 2 | Natural Gas Steam Turbine | 65.3 MW | Retired | December 2002 |
Grid
EIA-860 2025Grid fieldsAs the plant reported them to EIA-860 for 2025 (Schedule 2).- Grid voltage at the plant
- 220 kV
- Transmission or distribution system owner
- Southern California Edison Co
- Balancing authority
- California Independent System Operator
- NERC region
- WECC
Transmission lines within 25 km (10)
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 |
|---|---|---|---|---|
| Southern California Edison Co | Operator | EIA-860M | ||
| EDISON INTERNATIONAL | Owner | 100.0% | 31 Dec 2023 | EPA GHGRP |
Timeline
- In service · EIA-860M
- Stated Units 1, 2 scheduled to retire, 130.6 MW · EIA-860M
Sources
6 sourcesSources EIA-860M · GEM · 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 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.
- 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
- 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 |
|---|---|---|---|
| SunE Redlands Postponed | Solar | 0.9 km | 1.5 |
| Solar Photovoltaic Project #28 Postponed | Solar | 3.3 km | 0.5 |
| Redlands DC 9 - sline609 Under construction | Solar + storage | 3.5 km | 5 |
| Solar Photovoltaic Project #20 Postponed | Solar | 3.6 km | 3.5 |
| Energy Center Announced | Gas, combustion turbine | 7.5 km | 0.9 |
| CA Bloomington 2551 S Lilac Avenue Micro Under construction | Solar + storage | 12.9 km | 3 |
| Solar Photovoltaic Project #24 Postponed | Solar | 13.0 km | 4 |
| OES Biogas Power Under construction | Biomass | 14.0 km | 2.6 |
| CA Riverside 2356 Fleetwood Dr. Under construction | Solar + storage | 15.0 km | 4 |
| Solar Photovoltaic Project #30 Postponed | Solar | 17.1 km | 1.5 |
| Solar Photovoltaic Project #25 Postponed | Solar | 17.4 km | 4.5 |
| Solar Photovoltaic Project #27 Postponed | Solar | 17.4 km | 1 |
| RCWMD Badlands Landfill Gas Project Postponed | Biomass | 17.4 km | 1.2 |
| Amazon - Moreno Valley Postponed | Solar | 23.3 km | 2.2 |
| Solar Photovoltaic Project #17 Postponed | Solar | 24.1 km | 0.5 |
| Solar Photovoltaic Project #14 Postponed | Solar | 24.5 km | 1.5 |