# Old 300 Solar Center, LLC

ERCOT asset profile · https://askthegrid.com/assets/facilities/old-300-solar-center-llc

Ørsted · Fort Bend County · ERCOT

Old 300 Solar Center is a utility-scale solar project in Fort Bend County, Texas. EIA's May 2026 inventory reports one 430 MWac operating photovoltaic generator, 539.61 MWdc, and an October 2024 registry operating date. Ørsted's current project page reports 430 MW of solar and a co-located 250 MWh, two-hour battery project; Ørsted separately lists the solar project in commercial operation since 2023. The different dates describe project-level and EIA registry milestones and should not be treated as the same event.

## Profile

- **Grid role:** Utility-scale solar generation with co-located battery storage in ERCOT's Houston area.
- **Solar capacity:** EIA reports 430 MWac and 539.61 MWdc; Ørsted reports 430 MW of solar.
- **Storage scope:** Ørsted's current project page reports 250 MWh of two-hour battery storage.
- **Physical build:** Ørsted's 2020 investment announcement specified about one million bifacial modules from JA Solar and LONGi and SMA America inverters.

## Metrics

- **Solar AC capacity:** 430 MW — EIA May 2026
- **Solar DC capacity:** 539.61 MW — EIA May 2026
- **Storage energy:** 250 MWh — Ørsted current project page
- **Storage duration:** 2 hours — Ørsted current project page
- **Photovoltaic modules:** Approximately 1 million — Ørsted
- **Registry anchor:** Plant 64133 — Old 300 Solar Center, LLC

## Facts

- **Solar capacity:** 430 MWac / 539.61 MWdc — EIA May 2026 · confidence: high
- **Storage:** 250 MWh / 2 hours — Ørsted current project page · confidence: high
- **Registered operator:** Old 300 Solar Center, LLC — EIA May 2026 · confidence: high
- **Parent developer:** Ørsted — Ørsted · confidence: high

## Related parties

- **Owner / operator:** Ørsted — Owner / operator for Old 300 Solar Center, LLC ([source](https://orsted.com/))
- **Module supplier:** JA Solar — Module supplier for Old 300 Solar Center, LLC ([source](https://jasolar.com/))

## Sources

- [EIA May 2026 generator inventory](https://www.eia.gov/electricity/data/eia860m/) — U.S. Energy Information Administration · regulatory — Current generator records, capacity scopes, dates, status, operator, and technology.
- [Old 300 current project page](https://old300solar.com/) — Ørsted · official — Current solar capacity, storage energy and duration, location, and project context.
- [Ørsted Old 300 investment announcement](https://orsted.com/en/media/news/2020/12/993487556902623) — Ørsted · official — Final investment decision, AC capacity, site area, module count and suppliers, inverter supplier, and PPA context.

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Canonical page: https://askthegrid.com/assets/facilities/old-300-solar-center-llc
Website: [Ørsted](https://orsted.com/)
Profile published: 2026-07-17T03:34:37.444Z
Source: Ask the Grid — https://askthegrid.com/