How big is Orion III Solar Project?

Orion III Solar Project has a reported capacity of 250 MW. Source: EIA Form 860.

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 524.7 GWh over the twelve months to 2026-06. 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 #76 of 7,234 operating plants of the same technology nationally. It ranks #33 of 231 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

Overview

Reported capacity: 250 MW
EIA-reported operating capacity; nameplate, seasonal, AC/DC, and unit ratings may differ.
EIA capacity: 250 MWac
May 2026 inventory
Developer rating: 326 MWdc
SB Energy
EIA service month: Aug 2024
Plant 66821
Registry anchor: Plant 66821
Ben Milam Solar 3 LLC
Resource stack: 1 resource
HALO_SLR_UNIT1

Infrastructure record

Operator: Ben Milam Solar 3 LLC

Profile

Grid role: Utility-scale photovoltaic generation in ERCOT.
Capacity scope: 250 MWac in EIA · 326 MWdc on SB Energy's project page.
Operating record: Aug 2024 EIA service month · Oct 2024 Orion Solar Belt commercial-operation announcement.
Commercial context: Orion III is one of three SB Energy projects supplying Google data-center operations.

Structured profile

EIA capacity: 250 MWac
EIA May 2026
Developer rating: 326 MWdc
SB Energy
Registered operator: Ben Milam Solar 3 LLC
EIA
Developer and operator: SB Energy
SB Energy

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Units and generators

Operating generator records and technology attributes reported through EIA-860.

Generator	Capacity	Technology	Operation	Status
ORN3	250 MW 250 MW summer	Solar Photovoltaic Solar · PV	Aug 2024	Operating

Performance

Monthly EIA generation history and recent market-resource behavior where linked telemetry is available.

Peer context

Technology capacity: 250 MW
National rank: #76
TX rank: #33

Monthly generation

Download CSV

Latest 12 months

524.7 GWh

Reported net generation

Latest report

Jun 2026

EIA-923 monthly filing

2025 capacity factor

25.2%

Using current reported nameplate capacity

Grid and market context

Deterministic links to ERCOT market resources, price records, outage disclosures, queue records, and nearby infrastructure. Candidate joins remain labeled until corroborated.

Market registration

ERCOT public disclosures

Settlement point

HALO_RN1

high confidence spatial and capacity match

Market resources

1 resource

Related parties and identifiers

Parties, market resources, and identifiers tied to this asset, with owner, operator, developer, EPC, compliance provider, and interconnecting entity roles kept separate.

Relationship graph

Drag organizations to explore the network. Select a node to pin its details and available page link.

AssetProject companyOfftaker

Parties and identifiers

OrganizationRoleBasis

Ben Milam Solar 3 LLC

Timeline and sources

Project milestones and public references behind the asset profile.

Project timeline

Aug 2024
Aug 2024
EIA Service MonthEIA May 202...
EIA reports August 2024 for Orion III's 250 MWac generator.
Oct 18, 2024
Oct 18, 2024
Orion Solar Belt operation announced

Overview

Infrastructure record

Profile

Structured profile

Related assets

Orion II Solar Project

Stillhouse Solar

Units and generators

Performance

Peer context

Monthly generation

Grid and market context

Market registration

Related parties and identifiers

Relationship graph

Parties and identifiers

Timeline and sources

Project timeline

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Orion I Solar Project

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ERCOT disclosed dispatch

Generation

Output by hourlocal time · 90 days through Jul 13, 2026

Latest disclosed outputhourly · 2 weeks ending Jul 13, 2026

Settlement price economics

Operating context

Nearby substations

Reporting portfolio

Sources

Common questions about Orion III Solar Project