# Plant X

SPP asset profile · https://askthegrid.com/assets/facilities/plant-x

## Current generation inventory

EIA plant 3485 · Inventory reporting month: 2026-08.

- natural gas: 190.4 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): -102.4114, 34.1661
- OSM extract: 2026-10-08T20:21:06Z
- OSM mapped edit: 2026-01-20 02:47:54+00:00
- Map prepared: 2026-10-10T02:28:21.756287+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

Plant X Generating Station is an Xcel Energy natural gas-fueled power plant about 5 miles south of Earth, Texas, whose generating units have operated for at least six decades. Xcel announced in 2023 that it would add solar at the site. Plant X Solar, 150 MW on roughly 1,200 acres east of the plant, has been operational since April 1, 2026, and replaces the former gas-fueled Units 1 and 2. It connects through the existing substation by a 115-kV line, and a 150 MW battery system is proposed for 2027.

## Reviewed metrics

- **Nameplate capacity:** 190.4 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 3485 — plant-3485

## Facts

- **Technology:** Natural Gas Steam Turbine
- **Operator:** Southwestern Public Service Co

## Related parties

- **Owner:** Xcel Energy — owner ([source](https://www.xcelenergy.com))

## Sources

- [tdworld.com](https://www.tdworld.com/renewables/news/55371503/xcel-energy-announces-operations-of-new-solar-generation-and-battery-energy-storage-systems-to-serve-customers-in-texas-and-new-mexico) — tdworld.com · public_source — Source retained for exact-record publication review.

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

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