# Borden County BESS

ERCOT asset profile · https://askthegrid.com/assets/facilities/borden-county-bess

Aypa Power · Borden County · ERCOT

Borden County BESS is a battery energy storage facility with 150 MW of EIA-reported operating capacity and 300 MWh of reported energy capacity in Borden County, Texas, registered as EIA Plant ID 66804. Borden County Battery Energy Storage System LLC is the registered plant entity or operator. Its grid role is energy storage resource (merchant battery) — participates in ERCOT day‑ahead and ancillary services markets for energy arbitrage and ancillary services.

## Profile

- **Grid role:** Energy storage resource (merchant battery) — participates in ERCOT day‑ahead and ancillary services markets for energy arbitrage and ancillary services
- **Physical build:** 150 MW battery energy storage facility. Aypa’s project announcement states the Borden County project as 150 MW / 300 MWh; EIA/interconnection records show the plant as a 150 MW operational BESS with first unit online August 1, 2024. Project reporting names Linxon (EPC), Canadian Solar’s e‑STORAGE as the battery supplier/integrator, and Sungrow as an equipment supplier (reporting: 90 Sungrow individual battery units).

## Metrics

- **Power / energy:** 150 MW / 300 MWh — Reported plant capacity and configuration.
- **Technology:** Batteries — Primary generation technology.
- **Registry anchor:** Plant 66804 — Borden County Battery Energy Storage System LLC · Borden County · ERCOT
- **Storage duration:** 2 hours — Battery subsystem rating.
- **Operating status:** Operating — Borden County BESS is operating.
- **Equipment:** 90 battery units — Installed equipment documented in public project records. ([source](https://www.sungrowpower.com/en/products/utility-energy-storage-system))
- **Resource stack:** 1 resource — BOCO_ESS_ESR1

## Facts

- **Reported capacity:** 150 MW — Batteries · confidence: high
- **Energy:** 300 MWh — 2-hour storage duration · confidence: medium
- **Location:** Borden County — ERCOT · confidence: high
- **Operator:** Borden County Battery Energy Storage System LLC · confidence: high
- **Asset role:** batteries — ERCOT · Borden County
- **Owner:** Aypa Power — Aypa Power’s corporate site and press release state that Aypa Power 'develops, owns, and operates' utility-scale storage projects and that the November 8, 2023 portfolio financing 'supports... the Borden County project (a 150MW / 300MWh battery storage project in Texas)'. These statements identify Aypa Power as the project's developer/portfolio owner, while separate registry filings show the legal operator entity as the project-specific LLC. · confidence: medium

## Related parties

- **Owner / operator / developer:** Aypa Power (Blackstone) — Owner / operator / developer for Borden County BESS ([source](https://aypa.com/))
- **Tax equity investor:** U.S. Bancorp Impact Finance — Tax equity investor for Borden County BESS ([source](https://usbank.com/))

## Sources

- [~* TEX>~](https://interchange.puc.texas.gov/Documents/56006_172_1402831.PDF) — interchange.puc.texas.gov · regulatory — Jun 14, 2024 — Borden County Battery Storage This project consists of a new 138kV Station Bay … construction 8/15/2023 4/18/2024
- [Notice of Effectiveness of Exempt Wholesale Generator...](https://www.federalregister.gov/documents/2023/12/12/2023-27223/notice-of-effectiveness-of-exempt-wholesale-generator-status) — federalregister.gov · regulatory — Dec 12, 2023 — Exempt Wholesale Generators became effective. Borden County Battery Energy Storage System LLC EG23-279-000
- [Combo & Single Model ESR Names](https://www.ercot.com/files/docs/2025/02/14/single-model-esr-names_16Jun2025.xlsx) — ercot.com · regulatory — Feb 14, 2025 — The Single Model Energy Strorage Resource Names. ESR Name = "Substation Code" BOCO_ESS ESS1 BOCO_ESS_LD1 ESR1

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Canonical page: https://askthegrid.com/assets/facilities/borden-county-bess
Website: [Aypa Power](https://aypa.com/)
Profile published: 2026-07-17T03:34:02.789Z
Source: Ask the Grid — https://askthegrid.com/