Prospero Solar is a 300 MWac / 379 MWdc photovoltaic facility in Andrews County, Texas. EIA's May 2026 inventory reports one 300 MWac generator with 379 MWdc capacity dated June 2020. The asset closed a $416 million financing package with Meta, then Facebook, as sole tax-equity investor and CIT as lead coordinating arranger.
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
EIA May 2026
EIA and Longroad
First Solar
Longroad Energy
Longroad Energy
Prospero Energy Project LLC
PROSPERO_UNIT1 · PROSPERO_UNIT2
EIA May 2026
Longroad Energy
Sole investor
Similar plants ranked by technology, capacity, and distance.
Operating generator records and technology attributes reported through EIA-860.
| Generator | Capacity | Technology | Operation | Status |
|---|---|---|---|---|
| PROSP | 300 MW 300 MW summer | Solar Photovoltaic Solar · PV | Jun 2020 | Operating |
Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.
Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.
Source-backed project transactions, agreements, land records, permits, and environmental disclosures. Portfolio and adjacent-project facts remain explicitly scoped.
Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.
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Project milestones and public references behind the asset profile.
EIA reports June 2020 for the 300 MWac / 379 MWdc generator.
ERCOT SCED disclosure is delayed, so plant performance windows end at the latest disclosed interval.
Monthly generation is reported through EIA-923. Capacity factor uses the current EIA nameplate capacity and is shown only for complete calendar years.
2 ERCOT market resources · Solar
Capacity factor is average output vs. this plant's observed peak.
Observed ERCOT settlement prices at PROSPERO_ALL over 363 days (2025-09-11 to 2026-09-10).
The TB2 figure is a price benchmark, not revenue: it values one perfect-foresight cycle per day between the 2 cheapest and 2 dearest hours of each day, gross of round-trip losses, and excludes ancillary services and any physical dispatch constraint. It describes what this node’s price shape was worth over the window — it is not this asset’s realized capture, and no dispatch is assumed or modelled.
Matched to the latest available ERCOT generation-interconnection queue record. Queue status and completion dates describe the queue record; operating status is verified separately against plant and market registrations.
Portfolio membership follows the latest EIA-860 reporting entity. It does not imply ultimate ownership.
Answered from the published record above. Questions whose inputs this profile does not carry are omitted rather than estimated.
Prospero Solar has a reported capacity of 300 MW. Source: EIA Form 860.
Prospero Solar is a Solar Photovoltaic facility in Andrews County, TX, participating in the ERCOT market.
Prospero Solar is in Andrews County, TX, inside the ERCOT balancing area.
Prospero Solar is operated by Prospero Energy Project, LLC (Longroad) according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.
Prospero Solar reports a commercial operation date of 2020. Current status: operating. Source: EIA Form 860.
Prospero Solar reported 678.4 GWh over the twelve months to 2026-06. Figures are net generation as filed to EIA-923.
By capacity, Prospero Solar ranks #38 of 7,234 operating plants of the same technology nationally. It ranks #22 of 231 in TX.
Plants within 25 km, nearest first, regardless of technology. Proximity is straight-line distance between mapped plant coordinates; it does not by itself establish a shared point of interconnection.
