How big is Orion III Solar Project?

Orion III Solar Project reports 250 MW solar of operating nameplate capacity. These technology ratings do not establish a common export limit. Source: EIA Sep 2026.

What kind of plant is Orion III Solar Project?

Orion III Solar Project is a Solar Photovoltaic facility in Milam County, TX, participating in the ERCOT market.

Where is Orion III Solar Project located?

Orion III Solar Project is in Milam County, TX, inside the ERCOT balancing area.

Who operates Orion III Solar Project?

Orion III Solar Project is operated by Ben Milam Solar 3 LLC according to the EIA generator inventory. Reporting membership does not by itself establish ultimate ownership.

How much electricity does Orion III Solar Project generate?

Orion III Solar Project reported 534.3 GWh over the twelve months to 2026-07. Figures are net generation as filed to EIA-923.

How does Orion III Solar Project compare to other plants?

By capacity, Orion III Solar Project ranks #86 of 7,597 operating plants of the same technology nationally. It ranks #37 of 242 in TX.

Orion III Solar Project — 250 MW solar farm, TX

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Orion III Solar Project — 250 MW solar farm, TX · Ask the Grid

Generation and physical site

EIA plant 66821 · Inventory for Sep 2026.

Reported operating nameplate by technology

Solar: 250 MW

Operating generators only. Battery power is in MW; stored energy is in MWh. These ratings do not establish a shared export limit.

Generator records (1)

EIA generator status and nameplate capacity for Orion III Solar Project
Generator	Technology	Status	Power (MW)	Energy (MWh)
ORN3	Solar Photovoltaic	Operating	250	Unknown

Physical map location · OpenStreetMap: 30.93666, -97.11950
Filed location · EIA: 30.96022, -97.12452

Sources and observation dates

Inventory source: EIA-860M workbook (preliminary)
EIA reporting month: Sep 2026
EIA retrieved: Oct 24, 2026
OSM extract: Oct 9, 2026
OSM last mapped edit: Jan 7, 2026
Map prepared: Oct 24, 2026
Field verification: Not reported

Reporting month describes the inventory. Retrieval and map preparation describe processing; an OSM edit does not establish an in-service date.

EIA source inventory

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Structured profile

Generation and physical site

Reported operating nameplate by technology

Mapped facility footprint

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Units and generators

Performance

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Grid and market context

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Related parties and identifiers

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Parties and identifiers

Reporting portfolio

Timeline and sources

Project timeline

Sources

Common questions about Orion III Solar Project