# Maddox

SPP asset profile · https://askthegrid.com/assets/facilities/maddox

## Current generation inventory

EIA plant 2446 · Inventory reporting month: 2026-08.

- natural gas: 212 MW operating nameplate
- Capacity basis: operating_generator_nameplate_mw
- Source inventory: [EIA-860M workbook (preliminary)](https://www.eia.gov/electricity/data/eia860m/xls/august_generator2026.xlsx)
- Inventory retrieved: 2026-10-10T02:12:40.665346+00:00
- Filed coordinate (longitude, latitude): -103.3015, 32.714224
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2023-06-04 06:41:22+00:00
- Map prepared: 2026-10-10T02:28:23.031481+00:00

Battery power (MW) and stored energy (MWh) are separate measures. Shared physical-site membership does not establish electrical connectivity, settlement or a common export limit.

## Reviewed overview

Maddox is a natural gas plant in the Cunningham-Maddox Generating Complex, west of Hobbs in Lea County, New Mexico, which Xcel Energy owns. Maddox Unit 2 entered service in 1975 under a predecessor company, the New Mexico Electric Service Co. In July 2023 Xcel Energy filed a plan to extend that unit's operations to 2028. The Hobbs-area plants have supported the local economy since the 1950s and 1960s.

## Reviewed metrics

- **Nameplate capacity:** 212 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 2446 — plant-2446

## Facts

- **Technology:** Natural Gas Fired Combustion Turbine, Natural Gas Steam Turbine
- **Operator:** Xcel Energy
- **Operating status:** Operating

## Related parties

- **Owner / operator / parent company:** Xcel Energy — owner ([source](https://www.xcelenergy.com))
- **Former owner / developer:** New Mexico Electric Service Co. — former_owner

## Sources

- [newsroom.xcelenergy.com](https://newsroom.xcelenergy.com/news/xcel-energy-files-plan-to-meet-southwest-power-needs-MCWA2MCKS3CJDGDFOYTL3UWZROWE) — newsroom.xcelenergy.com · public_source — Source retained for exact-record publication review.

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Canonical page: https://askthegrid.com/assets/facilities/maddox
Website: [Xcel Energy](https://www.xcelenergy.com)

Source: Ask the Grid — https://askthegrid.com/