# Hecate Energy Outpost Solar LLC

ERCOT asset profile · https://askthegrid.com/assets/facilities/hecate-energy-outpost-solar-llc

## Current generation inventory

EIA plant 68838 · Inventory reporting month: 2026-08.

- solar: 515 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: 2026-10-10T22:49:53.020309+00:00
- Filed coordinate (longitude, latitude): -99.16174, 27.85923
- OSM extract: 2026-10-09T20:21:04Z
- OSM mapped edit: 2026-03-17 02:11:34+00:00
- Map prepared: 2026-10-10T23:05:25.789737+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

Outpost Solar is a Webb County project connected to Electric Transmission Texas at the 345 kV Avanzada station. The public records use different capacity bases—515 MW nameplate in the EIA/FERC record and 629 MW in Repsol's operating-project description—so this profile preserves both rather than collapsing them into a false single figure; commercial operations began in September 2025.

## Reviewed metrics

- **Nameplate capacity:** 515 MW — Canonical EIA plant baseline.
- **Registry anchor:** Plant 68838 — plant-68838

## Facts

- **Technology:** Solar Photovoltaic
- **Operator:** Repsol Renewables NA

## Sources

- [assets.comptroller.texas.gov](http://assets.comptroller.texas.gov/ch313/1673/1673-united-hecate-appsupp1.pdf) — assets.comptroller.texas.gov · authoritative — Source retained for exact-record publication review.
- [repsol.com](http://repsol.com/content/dam/repsol-corporate/en_gb/accionistas-e-inversores/informes-anuales/2025/consolidated-annual-financial-report-2025.pdf) — repsol.com · public_source — Source retained for exact-record publication review.
- [repsol.us](http://repsol.us/content/dam/repsol-paises/us/en/home/Repsol%20achieves%20commercial%20operations%20at%20its%20629%20MW%20Outpost%20solar%20facility%20in%20Texas-September_18_2025.pdf) — repsol.us · public_source — Source retained for exact-record publication review.
- [stonepeak.com](http://stonepeak.com/news/repsol-advances-its-renewable-energy-strategy-in-the-us-with-a-new-deal-with-stonepeak) — stonepeak.com · public_source — Source retained for exact-record publication review.

---

Canonical page: https://askthegrid.com/assets/facilities/hecate-energy-outpost-solar-llc
Website: [Repsol Renewables NA](http://repsol.us/en/renewables/index.cshtml)

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