# Castle Gap Wind

ERCOT asset profile · https://askthegrid.com/assets/facilities/castle-gap-wind

Swift Current Energy · Mills & Lampasas Counties · ERCOT

Castle Gap Wind is a wind power facility with 196.8 MW of EIA-reported operating capacity in Mills County, Texas, registered as EIA Plant ID 65790. Swift Current Energy is the public owner or developer; Castle Gap Wind Power, LLC is the registered plant entity or operator. The facility uses N149/4. X (N149/4.0–4.5) turbines. Commercial operation began on October 1, 2023.

## Profile

- **Grid role:** Utility-scale wind generation in ERCOT's energy-only market.
- **Physical build:** Turbine supply & installation: 41 Nordex N149/4. X onshore wind turbines (N149/4.0–4.5, Delta4000 series), each operating up to 4.8 MW, totaling ~196.8 MW. Owner/operator: Swift Current Energy / Castle Gap Wind Power, LLC. Project sells into ERCOT and.

## Metrics

- **Reported capacity:** 196.8 MW — EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
- **Technology:** Onshore Wind Turbine — Primary generation technology.
- **Registry anchor:** Plant 65790 — Castle Gap Wind Power, LLC · Mills County · ERCOT
- **Operating status:** Operating — Castle Gap Wind is operating.
- **Commercial operation:** October 1, 2023 — Best-supported operating milestone.
- **Resource stack:** 1 resource — AGUAYO_UNIT1

## Facts

- **Reported capacity:** 196.8 MW — Onshore Wind Turbine · confidence: high
- **Commercial operation:** October 1, 2023 · confidence: medium
- **Operating status:** operating — Castle Gap Wind is operating. · confidence: medium
- **Location:** Mills County — ERCOT · confidence: high
- **Operator:** Castle Gap Wind Power, LLC · confidence: high
- **Asset role:** wind — ERCOT · Mills County
- **Owner:** Swift Current Energy · confidence: medium

## Related parties

- **Owner / operator:** Swift Current Energy — Owner / developer associated with Castle Gap Wind. ([source](https://swiftcurrentenergy.com/))
- **Operator:** Castle Gap Wind Power, LLC — Registered entity associated with Castle Gap Wind.
- **Construction contractor:** Nordex Group — Supplier of Delta4000 / N149-series turbines ordered for the Castle Gap project. ([source](https://www.nordex-online.com/))
- **Financing arranger:** Mitsubishi UFJ Financial Group (MUFG) — MUFG acted as joint coordinating lead arranger and served as administrative and collateral agent on the project financing closed November 2, 2022. ([source](https://www.mufg.com/))
- **Financing arranger:** CaixaBank — CaixaBank acted as a joint coordinating lead arranger and green loan structuring agent on the project financing. ([source](https://www.caixabank.com/))
- **EPC contractor:** IEA Constructors — Named by the developer as the engineering, procurement and construction manager on the Castle Gap project.

## Sources

- [Control Number: 59141](https://interchange.puc.texas.gov/Documents/59141_307_1593480.PDF) — interchange.puc.texas.gov · regulatory — Castle Gap Wind Power, LLC sells 100% of its capacity into the ERCOT market. The company has an obligation under a Virtual Power Purchase Agreement (VPPA)
- [Castle Gap Wind - Swift Current Energy](https://swiftcurrentenergy.com/project/castle-gap-wind/) — swiftcurrentenergy.com · other — Castle Gap Wind Castle Gap Wind, Texas Trailblazing a path for clean energy now
- [Castle Gap Wind](https://swiftcurrentenergy.com/project/castle-gap-wind) — swiftcurrentenergy.com · other — Swift Current Energy is the developer, owner and operator of the project. Capacity 197 MW. Location Mills & Lampasas Counties, TX. Market ERCOT
- [N149/4.X](https://www.nordex-online.com/en/product/n149-4-0-4-5/) — nordex-online.com · other — With the N149/4.0–4.5, the Nordex Group was the first company to launch a turbine with a flexible rating. Delta4000 architecture certified on site. Rated power
- [Power plant profile: Castle Gap Wind Farm, US](https://www.power-technology.com/data-insights/power-plant-profile-castle-gap-wind-farm-us/) — power-technology.com · other — Feb 8, 2024 — The project is currently active. The project construction commenced in 2022 and subsequently entered into commercial operation in November 2023.

---

Canonical page: https://askthegrid.com/assets/facilities/castle-gap-wind
Website: [Swift Current Energy](https://swiftcurrentenergy.com/project/castle-gap-wind/)
Profile published: 2026-07-17T03:34:07.224Z
Source: Ask the Grid — https://askthegrid.com/