S-C-171
249 MW generation in Williamsburg, SC · In queue since October 2021 · Proposed COD October 2028
249 MW
Capacity
1
Components
Solar
4y 9m
In Queue
Construction
IA Phase
COD target: 2028
Total Duration
7 years
Interconnection request submitted to ISO/RTO
Project undergoes interconnection studies to assess grid impact.
Typical: 18–36 months
Interconnection agreement not yet executed
Typical: 30–60 days (negotiation)
Proposed COD: 2028-10-15
S-C-171 is a proposed solar generation project with a total capacity of 249 MW, located in Williamsburg County, South Carolina. The project is listed in the Santee Cooper interconnection queue as of October 26, 2021, with a proposed commercial operation date of October 15, 2028. The interconnection agreement status is currently "In Progress (unknown study)".
The development project is composed entirely of solar photovoltaic generation. It is located in the Southeast region and is listed under the queue ID S-C-171.
Generated from interconnection queue and public data sources
Realization risk through commissioning — schedule slippage, construction cost overrun, and COD probability vs the stated window. The diligence view that determines whether the project comes online when promised. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
SC
County
Williamsburg
Grid Region
Southeast
Market
—
Developer
—
Utility
Santee Cooper
Entity
S-C
Service Type
—
Data Source
LBNL
Composite operating-phase risk view — what this asset's risk profile will look like once it commissions. Climate hazards across its operating life, expected generation variability, and offtake counterparty exposure, decomposed into a single decision-grade score. Powered by InfraRisk.
See the full risk decomposition + scenarios for this project.
Forward generation outlook — first-year production estimate and 10-year P50 trajectory, with curtailment risk decomposed by congestion zone and ranges (P10/P50/P90) across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
See the full forecast + scenario decomposition for this project.
Forward revenue, first-year DSCR, and construction cost overrun exposure — what determines whether the deal clears its covenants once online. Projected across price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- SOUTHEAST
- Trading Hub
- Duke Carolinas
- Hub Confidence
- UNKNOWN
This project's market context is estimated from its Point of Interconnection. Hub and node assignments are approximate and based on geographic inference from the POI substation name.
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Ask about Project S-C-171Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
