Maddox reports 212 MW natural gas in SPP.
Mapped infrastructure geometry associated with this asset.
EIA plant 2446 · Inventory for Aug 2026.
| Generator | Technology | Status | Power (MW) | Energy (MWh) |
|---|---|---|---|---|
| 1 | Natural Gas Steam Turbine | Operating | 113.6 | Unknown |
| 2 | Natural Gas Fired Combustion Turbine | Operating | 86.9 | Unknown |
| 3 | Natural Gas Fired Combustion Turbine | Operating | 11.5 | Unknown |
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| 1 | 113.6 MW 117 MW summer | Natural Gas Steam Turbine Natural Gas · ST | Jan 1967 Retirement: Dec 2028 | Operating |
| 2 | 86.9 MW 61 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jan 1976 Retirement: Dec 2034 | Operating |
| 3 | 11.5 MW 10 MW summer | Natural Gas Fired Combustion Turbine Natural Gas · GT | Jan 1963 Retirement: Dec 2034 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
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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| Largest reported plants | Capacity | State | |
|---|---|---|---|
| Tolk | 1,135.8 MW | TX | |
| Harrington | 1,080 MW | TX | |
| Jones | 860.4 MW | TX | |
| Sagamore Wind | 522 MW | NM | |
| Hale Community Wind Farm | 478 MW | TX | |
| Nichols | 474.7 MW | TX | |
Project milestones and public references behind the asset profile.
EIA-860 lists generator 3 with this operating date.
EIA-860 lists generator 1 with this operating date.
By the New Mexico Electric Service Co., a predecessor of Xcel's utility.
EIA-860 lists generator 2 with this operating date.
Filed with the New Mexico Public Regulation Commission and the Public Utility Commission of Texas.
EIA-860 lists a planned retirement for generator 1.
EIA-860 lists a planned retirement for generator 2, generator 3.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Maddox reports 212 MW natural gas of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Aug 2026.
Maddox is a Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine facility in Lea County, NM, participating in the SPP market.
Maddox is in Lea County, NM, inside the SPP balancing area.
Maddox is operated by Southwestern Public Service Co according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Maddox reported 739 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.
By capacity, Maddox ranks #116 of 259 operating plants of the same technology nationally. It ranks #4 of 4 in NM.
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.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
