Orion III Solar Project

OperatingSolar

Ranked #87 of 351 Solar plants in TX#199 of 7447 nationally

250 MW Solar operating in Milam, TX — Electric Reliability Council of Texas, Inc.

EIAGEM

250 MW

Nameplate Capacity

Generators

unit

Solar Photovoltaic

Technology

2024

Operating Since

Location

Coordinates

30.9602, -97.1245

County

Milam, TX

Nearby Plants

Hermes Storage BESS
BESS100.4 MW · 3.0 km
OCI Stillhouse Solar
Solar210 MW · 4.0 km
Hermes Solar PV
Solar100.4 MW · 4.1 km

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	Ben Milam Solar 3 LLC	SB Energy Corp	—
Owner(s)	Ben Milam Solar 3 LLC	SB Energy Corp	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as SB Energy Corp

This entity is not yet in the GEM ownership database — chain unavailable.

About

The Orion III Solar Project is a 250 MW solar photovoltaic power plant located in Milam County, Texas. The plant, which began operating in 2024, is owned and operated by Ben Milam Solar 3 LLC. It utilizes single-axis tracking technology to maximize solar energy capture. Orion III is connected to the Electric Reliability Council of Texas (ERCOT) grid, operating within the TRE NERC region. The plant is ranked 67th out of 192 solar facilities in Texas and 141st nationally out of 639.

In its most recent year of operation, Orion III generated 551,808 MWh of electricity, achieving a capacity factor of 25.2%. Financial data is available for the plant, sourced from LBNL Solar. The plant has been the subject of 10 news articles, with coverage focusing on industry trends and deal-making.

Generated from EIA, GEM, and public data sources

EIA Plant Profile Global Energy Monitor

Engineering & Generators

Grid Context

NERC Region

TRE

Balancing Authority

Electric Reliability Council of Texas, Inc.

Grid Voltage

345 kV

Regulatory Status

Entity Type

Independent Power Producer

Sector

IPP Non-CHP

Generation

26.4K MWh

Latest Month

551.8K MWh

Annual Generation

25.2%

Capacity Factor

Financial DataBeta

Source: LBNL Utility-Scale SolarHIGH

$35.3/MWh

LCOE (Levelized Cost)

Pricing & Market Data

HIGH confidence

Point of Interconnection

Nearest Substation

Rogers Substation · 138 kV

Substation Distance

0.118 km

Operator

Oncor

Coord Source

OSM spatial

Market Position

ISO/RTO Market

ERCOT

LMP Node

HALO_RN1

Pricing Hub

HB_NORTH

Secondary Zone

LZ_NORTH

Location Type

Resource Node

Node Source

Curated node match

News & Articles (10)Beta

Industry·capacity addition

Texas Is Absolutely Rolling In New Solar Power Plants

Solar power is still alive and kicking in Texas, where a new billion-dollar, 408-megawatt solar project has just begun commercial operation.

Texas (other)

CleanTechnica·8 months ago

Deals·ppa

Primergy Solar Commissions 408 MWac Ash Creek Solar Project in Texas

The 408 MWac solar photovoltaic power plant is now delivering affordable energy to the grid in partnership with Microsoft through a long-term power purchase...

Primergy Solar (developer)Microsoft (buyer)

Energetica India Magazine·8 months ago

Industry·corporate

Microsoft’s 408 MW Ash Creek solar project in Texas is activated

Primergy Solar announced the Ash Creek solar project in Hill County, Texas has reached commercial operations. The project adds 408 MWac capacity to the ERCOT...

Microsoft (buyer)Primergy Solar (developer)

pv magazine USA·8 months ago