---
title: "Turning Basin Solar"
description: "Turning Basin Solar: 290 MW Solar project in Calhoun County, ERCOT COASTAL developed by Synergen Solar Energy LLC. Currently No IA; build-chance 2%. Independent ERCOT queue tracking by Matt Prusak."
canonical: "https://www.ercotqueue.com/project/28INR0515"
markdown: "https://www.ercotqueue.com/project/28INR0515.md"
resource_type: "project"
source_report: "October 2026"
generated_at: "2026-11-05T15:51:25.635Z"
license: "https://creativecommons.org/licenses/by/4.0/"
---

# Turning Basin Solar

Turning Basin Solar is an ERCOT generation interconnection record identified by INR 28INR0515.

## Current reported project fields

| Field | Value |
| --- | --- |
| INR | 28INR0515 |
| Developer | [Synergen Solar Energy LLC](https://www.ercotqueue.com/developer/synergen-solar-energy-llc.md) |
| Fuel / technology | Solar / PV |
| Capacity | 290.0 MW |
| County | Calhoun County |
| ERCOT zone | COASTAL |
| Point of interconnection | Tap 69kV (5574) Olivia Switch - (5576) Olivia Sub  proposed upgrade to 138kV dbl ckt Project in Calhoun and Jackson counties. Planned Sub loc  28.695671, -96.469752 Sub shared with a planned co-located green fuels plant of Synergen Point Comfort LLC |
| Projected commercial-operation date | 2028-12-31 |
| Reported status | SS Completed, FIS Started, No IA |
| Funnel stage | No interconnection agreement |

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 | 2% |
| P05 | 1% |
| P50 | 2% |
| P95 | 9% |

### Score factors

| Factor | Percentage-point contribution |
| --- | ---: |
| Stage base rate | +16.2 pp |
| Fuel adjustment | -0.5 pp |
| Developer-history adjustment | 0.0 pp |
| Stage-velocity adjustment | -10.0 pp |
| COD-slippage adjustment | 0.0 pp |
| FIS-progress adjustment | -3.5 pp |
| Capacity adjustment | +0.3 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 | 2026-05-13 |
| screening complete | 2026-08-10 |

## Observed monthly history

- First seen: 2026-10
- Last seen: 2026-10
- Appearances: 1
- 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 |
| --- | --- | --- |
| 2026-10 | Funnel stage | First observation to No IA |

Complete project-history JSON: [https://www.ercotqueue.com/data/project_history/28INR0515.json](https://www.ercotqueue.com/data/project_history/28INR0515.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: [Turning Basin Solar](https://www.ercotqueue.com/project/28INR0515)
- Markdown representation: [https://www.ercotqueue.com/project/28INR0515.md](https://www.ercotqueue.com/project/28INR0515.md)
- Source report: October 2026
- Site refresh: November 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.