---
title: "City Breeze BESS"
description: "City Breeze BESS: 143 MW Battery project in Matagorda County, ERCOT COASTAL developed by City Breeze BESS LLC. Currently IA + FIS complete; build-chance 89%. Independent ERCOT queue tracking by Matt Prusak."
canonical: "https://www.ercotqueue.com/project/25INR0271"
markdown: "https://www.ercotqueue.com/project/25INR0271.md"
resource_type: "project"
source_report: "July 2026"
generated_at: "2026-08-07T17:27:53.695Z"
license: "https://creativecommons.org/licenses/by/4.0/"
---

# City Breeze BESS

City Breeze BESS is an ERCOT generation interconnection record identified by INR 25INR0271.

## Current reported project fields

| Field | Value |
| --- | --- |
| INR | 25INR0271 |
| Developer | [City Breeze BESS LLC](https://www.ercotqueue.com/developer/city-breeze-bess-llc.md) |
| Fuel / technology | Battery / BA |
| Capacity | 143.1 MW |
| County | Matagorda County |
| ERCOT zone | COASTAL |
| Point of interconnection | 8111 MAGILL4A 138KV |
| Projected commercial-operation date | 2027-03-18 |
| Reported status | SS Completed, FIS Completed, IA |
| Funnel stage | Interconnection agreement and FIS complete |

County is the public geographic precision used by ERCOTQueue. Map symbols are county-level evidence and are not exact project coordinates.

## Independently derived Build Chance

| Measure | Value |
| --- | ---: |
| Validation-selected Build Chance | 89% |
| P05 | 84% |
| P50 | 88% |
| P95 | 92% |

### Score factors

| Factor | Percentage-point contribution |
| --- | ---: |
| Stage base rate | +91.9 pp |
| Fuel adjustment | -2.6 pp |
| Developer-history adjustment | 0.0 pp |
| Stage-velocity adjustment | +5.0 pp |
| COD-slippage adjustment | -5.0 pp |
| FIS-progress adjustment | 0.0 pp |
| Capacity adjustment | -0.2 pp |

These factors are ERCOTQueue derivations. The displayed probability is not an ERCOT forecast or an official project status.

## Reported milestones

| Milestone | Date |
| --- | --- |
| screening started | 2022-12-15 |
| screening complete | 2023-03-11 |
| fis requested | 2022-12-06 |
| fis approved | 2026-06-02 |
| ia signed | 2024-05-15 |

## Observed monthly history

- First seen: 2022-12
- Last seen: 2026-07
- Appearances: 44
- Score-series basis: Monthly points use the as-of seven-factor raw model on the validation-selected raw scale because the current isotonic candidate did not pass the project-purged application guard. The final point is anchored to the published current project score. The series shows trajectory, not a previously published frozen forecast.

The 30 most recent observed changes are shown below. The public JSON contains the complete history.

| Report month | Change | Detail |
| --- | --- | --- |
| 2026-06 | Funnel stage | IA signed, FIS pending to IA + FIS complete |
| 2025-10 | Projected COD | 2027-01-04 to 2027-03-18 (+2 months) |
| 2025-08 | Projected COD | 2026-07-15 to 2027-01-04 (+6 months) |
| 2024-06 | Developer field | Zenobe City Breeze BESS to City Breeze BESS LLC |
| 2024-05 | Projected COD | 2027-02-15 to 2026-07-15 (-7 months) |
| 2024-05 | Funnel stage | No IA to IA signed, FIS pending |
| 2024-03 | Projected COD | 2025-12-15 to 2027-02-15 (+14 months) |
| 2023-11 | Developer field | Black Mountain Energy Storage II to Zenobe City Breeze BESS |
| 2022-12 | Funnel stage | First observation to No IA |

Complete project-history JSON: [https://www.ercotqueue.com/data/project_history/25INR0271.json](https://www.ercotqueue.com/data/project_history/25INR0271.json)

## Field provenance

- Reported fields: INR, name, developer, capacity, fuel, county, zone, point of interconnection, projected COD, status, and dated milestones.
- Derived fields: funnel stage, COD-delay indicators, Build Chance, factor contributions, and uncertainty range.
- Current project dataset: [https://www.ercotqueue.com/data/projects.json](https://www.ercotqueue.com/data/projects.json)
- Current flat CSV: [https://www.ercotqueue.com/data/projects.csv](https://www.ercotqueue.com/data/projects.csv)

## Source, citation, and reuse

- Human-readable page: [City Breeze BESS](https://www.ercotqueue.com/project/25INR0271)
- Markdown representation: [https://www.ercotqueue.com/project/25INR0271.md](https://www.ercotqueue.com/project/25INR0271.md)
- Source report: July 2026
- Site refresh: August 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/projects.json](https://www.ercotqueue.com/data/projects.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.