Sentinel Energy Center
Climate Adaptive Infrastructure, LLCRiverside County
Sentinel Energy Center is an 800 MW gas-fired peaking plant in Riverside County, California, using eight GE LMS100 turbines. Its later battery installation supports black-start service. SDG&E’s February 2021 filing documented a separate five-year resource-adequacy contract for 42–47 MW of incremental capacity beginning June 2021; that historical agreement covers a portion of the plant and does not establish a current whole-plant SDG&E contract.
Mapped infrastructure geometry associated with this asset.
Natural Gas Fired Combustion Turbine
2-hour storage duration
Sentinel Energy Center, LLC is operating.
EIA plant 57482 · Inventory for Sep 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
| CTG2 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
| CTG3 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
| CTG4 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
| CTG5 |
SDG&E’s February 2021 Advice Letter 3689-E described resource adequacy from incremental turbine capacity: at least 42 MW, with 47 MW expected, for five years beginning June 2021. It was an RA-only purchase, separate from purchasing all plant energy. The filing alone does not establish an extension beyond that term.
Similar plants ranked by technology, capacity, and distance.
Current generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| CTG1 | 100 MW 100 MW summer | Natural Gas Fired Combustion Turbine GT | May 2013 | Operating |
| CTG2 | 100 MW 100 MW summer | Natural Gas Fired Combustion Turbine GT | May 2013 | Operating |
| CTG3 | 100 MW 100 MW summer | Natural Gas Fired Combustion Turbine GT | May 2013 | Operating |
| CTG4 | 100 MW 100 MW summer | Natural Gas Fired Combustion Turbine GT | May 2013 | Operating |
| CTG5 | 100 MW | |||
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
The California Energy Commission certified the Sentinel Energy Center project.
CAISO
CAISO · Riverside County
| Natural Gas Fired Combustion Turbine |
| Operating |
| 100 |
| Unknown |
| CTG6 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
|---|
| CTG7 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
|---|
| CTG8 | Natural Gas Fired Combustion Turbine | Operating | 100 | Unknown |
|---|
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
EIA-860 lists generator CTG1, generator CTG2, generator CTG3, generator CTG4, generator CTG5, generator CTG6, generator CTG7, generator CTG8 with this operating date.
CPV/project-finance records report that the 800-MW Sentinel project achieved commercial operation on May 1, 2013, ahead of schedule; GE announced grid operations in May 2013.
The California Energy Commission project page records August 1, 2013 as the commercial-operation date.
Sentinel Energy Center, LLC filed a California Energy Commission petition to add battery-supported black-start capability and increase turbine start flexibility.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
SDG&E’s February 2021 Advice Letter 3689-E described resource adequacy from incremental turbine capacity: at least 42 MW, with 47 MW expected, for five years beginning June 2021. It was an RA-only purchase, separate from purchasing all plant energy. The filing alone does not establish an extension beyond that term.
Sentinel Energy Center reports 800 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.
Sentinel Energy Center is a Natural Gas Fired Combustion Turbine facility in Riverside County, CA, participating in the CAISO market.
Sentinel Energy Center is in Riverside County, CA, inside the CAISO balancing area.
Sentinel Energy Center is operated by Sentinel Energy Center LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Sentinel Energy Center reported 165 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Sentinel Energy Center ranks #26 of 829 operating plants of the same technology nationally. It ranks #2 of 136 in CA.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.