Luna BESS

Large energy storage facility with white battery containers in a dry, open landscape.

Project Type: 100 MW AC coupled BESS
Location: Lancaster, CA
Client/EPC: AES

Luna BESS supports power stability by addressing the challenges of variable irradiance and curtailment. Luna BESS is located near the Big Sky substation which consolidates more than 700 MW of power generation from over 21 utility-scale photovoltaic (PV) resources spread across 60 square miles of high desert.

Trimark delivered plant controls for the Luna Battery Energy Storage System (BESS). Trimark’s Vantage™ SCADA works in cooperation with the Fluence battery controller to manage the 100 MW/400MWh BESS and support stable power delivery at the Big Sky substation.

Trimark’s Vantage™ SCADA receives, validates, and executes ADS setpoints generated by CAISO. Simultaneously, the system works to maintain Voltage at the POI, as required by Southern California Edison’s Grid Code. To meet these requirements, Trimark’s Power Plant Controller measures power values at the POI, then sends real and reactive power setpoint commands to the Fluence BESS controller. Ongoing measurements and set point adjustments are made to maintain the target values.

Trimark News

Meeting CAISO Rules for BESS Metering

Feb 26, 2024

Trimark’s Experts Weigh in on Separating Retail and Wholesale Meter Data for Battery Energy Storage Systems (BESS) The rapid increase…

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Ken Gaal Joins Trimark as Senior Director of Human Resources

Sep 22, 2025

Trimark is pleased to announce that Ken Gaal has joined the company as Senior Director of Human Resources where he…

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Trimark On-Premise Controller Meets NERC-CIP Requirements

Aug 01, 2022

Trimark’s System Supports Centralized Control and Cyber Security Best Practices Trimark Associates, Inc., the industry leader in intelligent renewable energy…

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Trimark Awarded SCADA for World’s Largest PV+BESS Project

Feb 17, 2021

The Edwards & Sanborn project redefines the utility-scale PV+Storage landscape. Folsom, CA, February 17, 2021 – Trimark Associates, Inc. is…

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Trimark Adds Proven Training Leader

Jul 24, 2025

Trimark is pleased to announce that Colin Tepfer has joined the company as Director of Training and Education. Colin is responsible…

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Trimark Achieves SOC 2® Type 2 Compliance

Feb 05, 2026

Trimark Associates, Inc. has announced successful completion of a System Organization Controls (SOC) 2® Type 2 audit of Trimark’s SCADA…

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