Space City Solar
366 MW generation in Wharton, TX · In queue since November 2019 · Proposed COD June 2027
366 MW
Capacity
1
Components
Solar
6y 8m
In Queue
IA Executed
IA Phase
Signed Jan 2021
Queue → IA
1y 2m
IA → COD
6y 5m
Total Duration
1y 2m
Interconnection request submitted to ISO/RTO
ERCOT uses a serial "connect and manage" approach — fastest among major ISOs.
Typical: 18–30 months (fastest major ISO)
Interconnection agreement executed — binding commitment to build
Typical: 30–60 days (negotiation)
Project under construction
Typical: 12–24 months
Proposed COD: 2027-06-01
Space City Solar is a proposed 609.74 MW solar generation project located in Wharton County, Texas. Developed by Apollo Solar Ranch, LLC, the project consists entirely of solar photovoltaic generation. It is currently active in the ERCOT interconnection queue as entry ERCOT-21INR0341, with a queue entry date of November 1, 2019. The project's proposed commercial operation date is June 1, 2027, and its Interconnection Agreement (IA) was executed on January 6, 2021.
The point of interconnection for Space City Solar is the 44200 Hillje 345kV substation. The project has been the subject of recent news coverage, with 13 articles categorized as pertaining to industry and regulatory matters.
Generated from interconnection queue and public data sources
Realization risk from now to commercial operation — financing close, EPC and tax-equity counterparty mix, and COD probability vs the proposed date. The diligence view that determines whether the deal actually closes. Powered by InfraSure's development-stage modeling stack.
See the full development-risk decomposition for this project.
State
TX
County
Wharton
Grid Region
ERCOT (Texas)
Market
ISO/RTO Member
Developer
Apollo Solar Ranch, LLC
Utility
—
Entity
ERCOT
Service Type
—
Point of Interconnection
44200 Hillje 345kV
Data Source
LBNL + Live
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 probabilistic 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, DSCR projection, and financing-close risk — conditioned on commercial operation. First-year DSCR, 10-year cashflow, and counterparty exposure across price and policy scenarios. Powered by InfraSure's asset cashflow stack.
See the full revenue + DSCR projection for this project.
- ISO / RTO
- ERCOT
- Trading Hub
- HB_HOUSTON
- Hub Confidence
- MEDIUM
- POI Substation
- Hillje Substation
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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Forward forecasts, scenario decomposition, and risk-decision tooling for this queue project.
