---
title: "Black Mountain Energy Storage II"
description: "Black Mountain Energy Storage II: ERCOT generation developer with 9 projects on file (5 active, 0 commissioned, 4 dropped). 0.0% historical completion rate. Independent ERCOT developer track-record dossier by Matt Prusak."
canonical: "https://www.ercotqueue.com/developer/black-mountain-energy-storage-ii"
markdown: "https://www.ercotqueue.com/developer/black-mountain-energy-storage-ii.md"
resource_type: "developer"
source_report: "August 2026"
generated_at: "2026-09-08T19:34:08.442Z"
license: "https://creativecommons.org/licenses/by/4.0/"
---

# Black Mountain Energy Storage II

Black Mountain Energy Storage II is represented in ERCOTQueue as a developer filing-entity record.

## Track record

| Measure | Value |
| --- | ---: |
| Total historical projects | 9 |
| Active | 5 |
| Commissioned | 0 |
| Dropped | 4 |
| Historical completion rate | 0.0% |
| Portfolio capacity | 4.34 GW |
| Last observed activity | 2026-08 |

The historical completion rate is a backward-looking queue statistic. It does not establish the outcome of a current project.

## Historical project mix

| Fuel | Projects |
| --- | ---: |
| Battery | 7 |
| Gas | 2 |

## Projects in the current public report

| Project | INR | Fuel | Capacity | County | Stage | Build Chance |
| --- | --- | --- | ---: | --- | --- | ---: |
| [BM Great Rock Energy Center](https://www.ercotqueue.com/project/30INR0091.md) | 30INR0091 | Gas | 1,981.2 MW | Leon | No interconnection agreement | 1% |
| [BM Freestone Energy Center](https://www.ercotqueue.com/project/29INR0298.md) | 29INR0298 | Gas | 990.6 MW | Freestone | No interconnection agreement | 1% |
| [Goldeneye BESS](https://www.ercotqueue.com/project/25INR0100.md) | 25INR0100 | Battery | 201.6 MW | Bell | Interconnection agreement and FIS complete | 59% |
| [Outer Loop BESS](https://www.ercotqueue.com/project/23INR0382.md) | 23INR0382 | Battery | 201.2 MW | Harris | No interconnection agreement | 1% |
| [Picadillo BESS](https://www.ercotqueue.com/project/24INR0275.md) | 24INR0275 | Battery | 100.8 MW | Martin | Interconnection agreement and FIS complete | 58% |

## Data

- Filing-entity scorecards: [https://www.ercotqueue.com/data/developer_scorecards.json](https://www.ercotqueue.com/data/developer_scorecards.json)
- Curated parent scorecards: [https://www.ercotqueue.com/data/developer_scorecards_parents.json](https://www.ercotqueue.com/data/developer_scorecards_parents.json)
- Developer-name change log: [https://www.ercotqueue.com/data/developer_changes.json](https://www.ercotqueue.com/data/developer_changes.json)

## Source, citation, and reuse

- Human-readable page: [Black Mountain Energy Storage II](https://www.ercotqueue.com/developer/black-mountain-energy-storage-ii)
- Markdown representation: [https://www.ercotqueue.com/developer/black-mountain-energy-storage-ii.md](https://www.ercotqueue.com/developer/black-mountain-energy-storage-ii.md)
- Source report: August 2026
- Site refresh: September 2026
- Methodology: [ERCOTQueue methodology](https://www.ercotqueue.com/methodology)
- License: [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)
- Source data (application/json): [https://www.ercotqueue.com/data/developer_scorecards.json](https://www.ercotqueue.com/data/developer_scorecards.json)

ERCOTQueue distinguishes reported source fields from independently derived analysis. Queue capacity records development and interconnection activity; it does not establish financing, construction, or commercial operation. Build Chance is a research signal, not a guarantee or investment recommendation.