Utility-Scale BESS Fire Protection System

Fire Protection at Grid Scale for Battery Energy Storage Systems

Project Overview

Location: Major Metropolitan Area, Southwestern United States
Facility Type: Battery Energy Storage System (BESS) – Utility-Scale Renewable Energy
Scope: 800-panel fire alarm network
Installer: ORR Protection Systems
Potter System: Potter AFC-50, AFC-100, AFC-1000 control panels, pull stations, annunciators and central fire alarm network integration

Powering Arizona Safely

This utility-scale battery energy storage installation is among the largest in its region, providing 1,200 MWh of clean energy—enough to power 244,000 homes each day. To protect this critical infrastructure, a scalable fire alarm solution uniting hundreds of modular battery containers under one network was designed and commissioned.

The Challenge

Building a fire protection system for a project of this scale was anything but standard. The BESS installation faced three key challenges:

  • Modular Complexity: The system encompassed hundreds of containerized battery units from third-party suppliers, each requiring fire protection integration.

  • Programming Mismatches: Vendor-programmed components created compatibility issues, risking commissioning delays.

  • Compressed Schedule: With commercial operation on the horizon, the project demanded immediate technical intervention and coordination across multiple contractors.

The end user (utility-scale energy storage operator) was an energy leader but new to large-scale fire alarm systems. Potter’s engineering collaboration and ORR’s expertise were essential to keeping the project safe, compliant, and on track.

The Solution

Working under a national energy infrastructure contractor, ORR Protection implemented a custom-designed Potter fire alarm system built for modular scalability and continuous supervision.

  • 800 Potter AFC Series Fire Alarm Control Panels – Provided distributed protection across each modular container, networked to communicate with a central command unit.

  • Potter Pull Stations and Annunciators – Deployed for rapid local notification and operator awareness throughout the facility.

  • Potter Central Control Integration – Enabled seamless coordination between distributed nodes and the master alarm interface for instant response visibility.

Engineering and Technical Execution

  • ORR pre-tested and reprogrammed mismatched third-party equipment to ensure full Potter system compatibility and NFPA code compliance.

  • The team resolved Level 2 alarm and communication issues in real time, working long hours and weekends to maintain the commissioning schedule.

  • Potter engineers supported the effort with timely technical assistance and system validation, ensuring uniform operation across the massive 800-panel network.

Installer Testimony

Partnering with Potter allowed us to bring confidence and code-level performance to one of the region’s most complex energy storage projects. Their support, responsiveness, and product reliability were key to achieving a flawless result.”

— Erica Khourjian, ORR Protection, Regional Vice President, West

Installation Approach

  • Pre-test and reprogram mismatched third-party components

  • Resolve alarm and communication conflicts in real time

  • Coordinate multi-contractor commissioning schedules

Why Potter

This large utility-scale BESS installation demonstrates how Potter’s fire systems and technical partnership empower leading integrators like ORR Protection Systems to deliver safety, scalability, and certainty on large-scale energy infrastructure projects.

  • Scalable Network Architecture – Potter systems integrate seamlessly across distributed modular applications.

  • Proven Reliability – Engineered to perform in mission-critical environments like energy, industrial, and data infrastructure.

  • Responsive Engineering Support – Potter’s technical team provides real-time collaboration for installers under tight deadlines.

  • Open and Adaptable Systems – Non-proprietary architecture simplifies commissioning and long-term maintenance.

Potter. Designed to outperform. Chosen by pros. Trusted where it matters.
Planning a high-visibility project? Let’s talk about how Potter can help you deliver confidence without complexity.

Based on a real Potter installation. Customer and project identifiers have been removed. No owner or operator endorsement is implied.