Battery Energy Storage Systems (BESS) are playing an increasingly role in the modern energy landscape. By storing excess energy during low-demand periods and releasing it during peak demand, BESS installations help balance demand, reduce costs, and support the integration of renewable energy sources. As BESS deployments grow in scale and complexity, so too does the need for robust, real-time monitoring to protect these high-value assets and maximize their performance.

A typical BESS implementation brings together multiple interconnected systems. As a result, managing all of these data streams effectively is essential for maintaining system health, ensuring safety, and delivering on performance guarantees. Without comprehensive monitoring, operators are left reacting to problems rather than preventing them, a costly and risky position for assets of this scale and value.

The Challenge: A Multi-Tenant Problem

This particular BESS deployment introduced a structural complexity that complicated their monitoring capabilities: a multi-tenant architecture. The system needed to serve two distinct audiences simultaneously: the project partner responsible for deploying and maintaining the batteries, and the end user relying on the stored energy. Each party required access to relevant data, but with appropriate boundaries around what they could see and control.

Unfortunately, their existing solutions were built for a single-operator environments. Configuring them to support tiered access across multiple stakeholders, each with different monitoring priorities and reporting needs, proved difficult and limiting.

The Information Gap

The partner recognized that better data meant better service. With deeper visibility into battery behavior and system performance, they could respond to issues faster, provide more informed support to the end user, and move from reactive maintenance toward proactive asset management.

However, the available solutions fell short. While basic BMS and EMS platforms could provide snapshots of current status, they lacked the long-term historical data storage needed to track performance trends, investigate quality issues, or support service disputes over time. SCADA systems offered more capability but were not suited to their multi-site deployments accessible by multiple stakeholders.

The result was a significant monitoring gap at a time when both the partner and end user needed detailed, reliable, and long-term data to manage and trust their investment.

Requirements

With the challenges clearly defined, the project team established a set of core requirements for the monitoring solution:

• Real-time monitoring across all connected systems (BMS, MFMs, UPS, and weather monitoring) to give operators an accurate, live picture of system status at all times.
• Proactive alarm management to flag developing issues before they escalate, enabling the operations team to intervene early and avoid costly downtime or equipment damage.
• Configurable alerts to notify the right people at the right time, whether that is an on-site technician, a remote engineer, or a senior stakeholder at headquarters.
• Cloud-hosted, secured access to support the multi-tenant architecture, allowing both the partner and the end user to access the data they need from anywhere, with appropriate permissions and data separation in place.
• Centralized data integration via Modbus to consolidate inputs from the various systems already installed at each site into a single, unified platform without requiring infrastructure overhaul.
• Improved visualizations to make complex operational data immediately understandable, enabling faster decisions and clearer communication across teams and stakeholders.

The Solution: HanPrism

After evaluating the available options, the team selected HanPrism as the monitoring and data management platform for the BESS deployment. HanPrism’s architecture was well suited to the multi-tenant requirement, offering secured, self-cloud-hosted access with the flexibility to configure different views and permissions for different user groups.

Current Architecture

HanPrism is currently fetching data at a 30-second resolution from data loggers installed at each site. This high-frequency data capture ensures that transient events and short-duration anomalies are recorded and available for analysis, not lost between polling cycles. And HanPrism is system agnostic. no matter the BESS manufacturer or BMS provider, HanPrism collects, archives, and visualizes BESS data for improved operations.

In addition to the BMS and MFMs at each site, HanPrism integrates data from the site and a Weather Monitoring System (WMS), bringing together a comprehensive set of inputs into one unified view. Key data points collected include:

• BMS: State of Charge (SOC) Min and Max, Power Charge and Discharge
• Operations: Start and Stop Hours
• WMS: Ambient Temperature, Relative Humidity, and Irradiation

This breadth of data gives both the partner and the end user a complete picture of system behavior from battery health and energy flows to the environmental conditions influencing performance.

With all data centralized and historically stored in HanPrism, the facility is now equipped to track long-term performance trends, validate maintenance decisions with real evidence, and provide transparent, data-backed reporting to all stakeholders.

The Results

The deployment of HanPrism as the BESS monitoring solution has delivered meaningful improvements across the operation:

Multi-stakeholder visibility is now a reality. Both the partner and the end user can access the data they need through a secured, cloud-hosted interface with appropriate permissions ensuring each party sees what is relevant to them.

Proactive maintenance has replaced reactive responses. With real-time alarms and a growing bank of historical data, the team can identify developing issues early and schedule interventions before they become failures.

Long-term data integrity means that performance history is preserved and accessible for quality assurance, service support, and continuous improvement, something the previous BMS and EMS solutions could not provide.

Richer operational understanding through improved visualizations allows operators to quickly assess system status, communicate clearly with stakeholders, and make confident, data-driven decisions.

Environmental context provided by integrated weather monitoring helps explain performance variations and supports more accurate analysis of battery behavior over time.

Ready to take control of your BESS assets? Contact us to learn how HanPrism can deliver the monitoring, visibility, and multi-tenant access your project demands.