Billion Electric Co., Ltd., Updated: 2025/11/18

1. Introduction to Energy Storage

This section introduces the fundamental concepts of energy storage, its growing importance in modern power systems, and the current status and future trends of the energy storage market in Taiwan. It aims to help readers better understand customer needs and clearly communicate the core value of our product solutions.

1.1 What is Energy Storage, and Why Is It So Important?

Energy storage, as the name suggests, refers to technologies that store electricity when it is available and release it when it is needed. Think of the power grid as a giant reservoir: power plants are the water sources, and electricity users are like the people drawing water. Traditionally, electricity generation and consumption must be balanced in real time. If they’re not, the result can be grid instability—or even blackouts.

With the rapid growth of renewable energy like solar and wind power, maintaining that balance has become more challenging. These clean energy sources are intermittent and unpredictable—solar only works when the sun shines, and wind generation depends on wind speed. This mismatch often leads to situations where excess energy is wasted because it can’t be used or stored right away.

To solve this issue, Energy Storage Systems (ESS) are developed. They act like a “battery bank” for the grid: they store surplus electricity—for example, during the day when solar production exceeds demand—and then discharge it later, such as in the evening during peak usage or when solar and wind generation drop. With energy storage, we can:

• Improve grid stability and resilience: Smooth out the fluctuations of renewables, reduce stress on the grid, and provide backup power during outages or voltage dips—ensuring continuous power to critical loads.
• Optimize energy usage efficiency: Store excess renewable energy instead of wasting it, helping increase green energy self-consumption rate. 
• Lower electricity costs: Take advantage of the price difference between peak and off-peak electricity to perform peak shaving, by charging during off-peak hours (lower rates) and discharging during peak hours (higher rates) to reduce total energy expenses.
• Align with policies and regulations: Meet government regulations such as renewable energy quotas or obligations for large electricity consumers, and participate in ancillary service markets to generate additional income. 
  

1.2 Types of Energy Storage Technologies

There are many types of energy storage technologies, and the mainstream energy storage technologies on the market are mainly based on battery chemistry principles. Among them, Lithium-ion batteries—especially Lithium Iron Phosphate (LFP)—are the most widely used due to their high energy density, long cycle life, and relatively strong safety performance.

Common Energy Storage Technologies 

Electrochemical Energy Storage (Battery Energy Storage):

• Lithium-ion Battery: The most mainstream technology in today’s energy storage market, widely used across various BESS applications. Within this category, Lithium Iron Phosphate (LFP) batteries stand out for their high safety, long lifespan, and cost-efficiency, making them ideal for large-scale energy storage application.

• Flow Battery: This technology uses electrolyte circulation for charging and discharging, which offers long service life, independently scalable capacity, and high safety, but relatively low energy density. Flow batteries are typically suited for long-duration, utility-scale storage projects.

• Lead-acid Battery: A cost-effective option with relatively short lifespan and low energy density, typically used in small-scale backup power applications.

Mechanical Energy Storage:

• Pumped Hydro Storage: The most widely used and largest-capacity form of energy storage globally. It stores energy by moving water between high and low reservoirs, but is limited by geography and requirements.

• Compressed Air Energy Storage (CAES): Stores compressed air and releases it to power turbines when needed. It has lower efficiency and depends on specific geological conditions.

• Flywheel Energy Storage: Uses a rapidly spinning rotor to store kinetic energy. With its fast response, it is ideal for short-duration, high-power applications such as grid frequency regulation.

Thermal Energy Storage: Stores heat energy for later use—either by converting it back into electricity or using it directly such as molten salt energy storage.

NoonSpare’s Proteus system is built on advanced Lithium Iron Phosphate (LFP) battery technology, a solution that balances performance, safety, and cost-effectiveness—making it especially well-suited for commercial and industrial applications.

1.3 Energy Storage Market Status and Trends in Taiwan

Taiwan’s energy storage market is undergoing rapid expansion, driven multiple factors, including: 

• Policy Incentives: The government’s commitment to net-zero emissions by 2050, increasing the share of renewable energy, and policies like the Large Electricity User Mandate and Demand Response Programs are creating strong momentum and incentives for energy storage adoption.

• Electricity Rate Structure Adjustment: Taipower has significantly widened the gap between peak and off-peak electricity rates. This enhances the economic viability of time-of-use (TOU) arbitrage, attracting commercial and industrial users to deploy ESS.

• Grid Resilience Need: With the rise in extreme weather events and the rapidly increasing electricity demand driven by AI industry, strengthening grid resilience and ensuring a stable power supply has become a top priority—and Energy Storage Systems play a critical role in achieving this.
  

Market Segmentation: Taiwan’s energy storage market is typically divided into FTM and BTM

• Front-of-Meter (FTM): Refers to energy storage systems connected directly to the grid side. These systems primarily participate in ancillary services—such as dynamic regulation reserve (dReg)—or are paired with large-scale power plants to enhance grid stability. In recent years, however, some FTM projects have exited the market due to oversized capacity outpacing Taipower’s actual demand, leading to a cautious outlook for this segment.

• Behind-the-Meter (BTM): These energy storage systems are installed on the customer side—such as in factories, commercial buildings, or residential sites. Their primary goals are to optimize on-site energy usage, reduce electricity costs, and provide backup power. Taiwan’s BTM market is currently experiencing a surge in enterprise collaboration, signaling significant growth potential. NoonSpare’s Proteus system is specifically designed to meet the needs of this growing BTM sector.

Market Outlook: According to forecasts from ITRI (Industrial Technology Research Institute) and InfoLink, the global energy storage market is expected to continue growing. In Taiwan, the cumulative installed capacity of energy storage systems is projected to reach 8 GW of power and 20 GWh of capacity by 2030, with a total market value exceeding NT$200 billion, highlighting the enormous potential of the local market.

1.4 NoonSpare’s Position in the Energy Storage Industry

Leveraging NoonSpare's deep technical expertise in energy storage and strong local service capabilities, it carved out a unique position in Taiwan’s fast-growing ESS market. Our Proteus C&I Energy Storage Integrated System is designed specifically for the Behind-the-Meter (BTM) segment, providing commercial and industrial users with a fully integrated energy management solution that aligns with time-of-use pricing policies and demand response opportunities, while also supporting backup power and microgrid applications.

Our competitive advantage is reflected in:

• Technology Leadership: Adopts high-efficiency liquid cooling, multi-layered fire safety, and our self-developed BMS and EMS (EMU), the Proteus system is especially well-suited for Taiwan’s hot and humid climate.
• High Integration & Flexibility: The Proteus system integrates the PCS, batteries, and EMS into a single system cabinet, which is fully plug-and-play, supporting modular expansion and parallel connection to meet various project scales.
• Localization Support: Deep understanding of local market needs and policy regulations allows us to deliver tailored product designs and responsive technical support right where it’s needed.
  

Understanding these basic knowledge and market trends will empower our marketing and sales partners to better communicate the value of energy storage to customers—and demonstrate NoonSpare’s critical role in driving Taiwan’s energy transition.

2. Overview of the EMU Local Energy Management System Architecture 

This chapter introduces the technical architecture, core modules, and functional implementation of NoonSpare's self-developed EMU Local Energy Management System, and its key role in the Proteus C&I energy storage integrated system. By understanding the design philosophy and technical details behind EMU, our marketing and sales partners can make informed strategies in product planning, feature iterations, and communication with the R&D team.

2.1 EMU System Role and Core Value 

The EMU (Energy Management Unit) serves as the intelligent brain of NoonSpare’s Proteus C&I Energy Storage Integrated System. Far more than just a monitoring component, the EMU is a smart decision-making platform equipped with precise control and high-efficiency communication capabilities. Its core value lies in enabling the automation and intelligence of the entire energy storage system—ensuring that the system operates safely, efficiently, and reliably, even under complex and variable grid conditions and user demands, while also maximizing economic returns.

Key Functions of the EMU:

• Data Acquisition & Analysis: Collects operational data in real time from critical components such as PCS (Power Conversion System), BMS (Battery Management System), and meters. Then analyzes to support system decision making.

• Strategy Formulation & Execution: Intelligently formulates charge and discharge strategies based on preset schedules, electricity pricing signals, and load forecasts, while precisely controlling the PCS to carry out these operations.

• Safety Monitoring & Protection: Continuously monitors the operational status of all system components in real time, enabling early detection of anomalies and triggering appropriate protection mechanisms to ensure the safety of both the system and personnel.

• Communication & Coordination: Enables seamless communication across all internal modules and with external third-party platforms, allowing for coordinated multi-system integration and operation.
  

2.2 EMU System Architecture and Modules

The EMU system adopts modular architecture design, and the system topology diagram is shown below.

2.2.1 Hardware Platform

The EMU system adopts a high-performance hardware platform to ensure real-time data processing and system stability.

• CPU: A9 quad-core 1.5 GHz (International Version) — delivers powerful processing performance, capable of handling complex energy management algorithms and real-time data analytics.
• RAM: 512 MB DDR3 — offers sufficient memory to support multitasking and parallel processing.
• Memory: MLC eMMG 8G Byte, used to store the operating system, application software, historical data, and configuration parameters.
• Network Interfaces: Two 100M/10M Ethernet interfaces for communication with PCS, third-party EMS, or cloud platforms.
• Communication Interfaces: Four fully isolated RS485 ports and two fully isolated RS232 ports — ensure reliable communication with BMS, meters, and sensors.
• USB Interface: One USB 2.0 Host — for data export or firmware upgrades.
• Real-Time Clock (RTC): Powered by a CR2032 battery to maintain accurate system time, even during power outages.
• Power Input: Wide input range from DC 9V to 48V, compatible with various power environments.
• Dimension & Power Consumption: Compact dimensions (128.8 mm × 117 mm × 28 mm) combined with low average power consumption (<5W) make the system easy to integrate and help reduce overall operating costs.
• Operating Temperature: Wide temperature range of -45°C to 85°C, ensuring reliable performance under harsh environmental conditions.
  

2.2.2 Software Function Modules

The EMU's software modules cover all operational aspects of the energy storage system, enabling end-to-end management—from data acquisition to intelligent decision-making.

System Monitoring Module:

• Real-time Data Display: Monitors the live operational status of:

- BMS: battery voltage, current, temperature, SOC (State of Charge), SOH (State of Health)

- PCS: power, voltage, current, frequency, operation mode

- Meter: voltage, current, power, and energy on both the grid side and load side

• Power Flow Visualization: Intuitive graphical interface shows real-time energy flow within the system, helping users quickly understand power distribution.
• Historical Data Query: Users can access and visualize historical data to analyze energy usage patterns and system performance trends.

Data Acquisition & Storage Module: 

• Scheduled Data Collection: Automatically collects operational data at predefined intervals from all connected devices. 
• Alarm & Operation Logs: Records all system alarms, protection actions, and user operations for troubleshooting and maintenance tracking.
• Data Export: Supports exporting data in formats like CSV or Excel for offline analysis or report generation.
  

Charge & Discharge Control Module: 

• Manual Control: Users can manually start/stop charging and discharging, and set power levels as needed. 
• Automated Scheduling: Executes charge/discharge strategies based on daily, weekly, or monthly schedules—enabling peak shaving and demand management.
• SOC Limit Control: Automatically starts or stops charging/discharging based on configured SOC upper and lower thresholds to protect battery life.
• Load-Tracking Discharge: Based on data from the load-side meter to perform load-tracking discharge for matching the user's electricity demand precisely.

Communication Module: 

• Internal Communication: Uses CAN, RS485, and other protocols to communicate with internal components like BMS, PCS, and PDU (Power Distribution Unit).
• External Communication: Supports standard protocols such as Modbus TCP/IP, enabling data exchange and remote control with third-party EMS, SCADA systems, or cloud-based monitoring platforms.
• Data Backup & Recovery: Ensures the security of system configurations and historical data.
  

Parameter Configuration Module: 

• SOC Threshold Settings: Set upper and lower SOC limits to optimize battery lifespan and system performance.
• PCS Parameter Settings: Configure PCS operation modes (PQ, V/f, Droop, VSG), parallel settings, grid parameters, and user access control to ensure safe and authorized operation.

Remote Function Module:

• Remote Monitoring: Allows administrators to view device status, operating data, and alarm messages via network access.
• Remote Control: Enables remote start/stop of charge/discharge operations, and adjustment of power settings.
• Alarm & Protection Parameters Access: View system alarm parameters and protection thresholds remotely to assist with diagnostics and maintenance.
  

2.2.3 I/O Module Control Strategy

The EMU’s I/O module is responsible for physical signal exchange with external devices, enabling precise control and status feedback.

• Operation Indicator (DO1): Signals the operational status of the PCS. 
• Fault Indicator (DO2): Indicates rack malfunctions
• Fan Control (DO3): Controls the activation of cooling fans based on PCS operation status to ensure proper heat dissipation. 
• Battery Fault Signal (DO4): Receives battery fault input and issues a shutdown command to the PCS, ensuring system safety.
• AC Shunt Trip Control (DO5): Receives emergency stop signals or fire sprinkler feedback, and immediately triggers the trip of the main circuit MCCB (Molded Case Circuit Breaker) to enable emergency power cutoff.
• Emergency Stop (DI1): Receives manual emergency stop signal, initiating AC shunt trip for system shutdown.
• AC Breaker Feedback (DI2): Monitors dehumidifier fault status and triggers alarms.
• Access Control Emergency Stop (DI3): Monitors door access status; triggers an alert if the door is opened.
• SPD (DI4): Monitors Surge Protection Device (SPD) status to protect the PCS.
  

2.3 Integration of EMU with the Proteus System

The EMU is the key to realize "integration" and "intelligence" of NoonSpare’s Proteus C&I Energy Storage Integrated System. It works closely with the PCS (Power Conversion System), battery modules (with built-in BMS), and other supporting components in the Proteus System, the EMU brings everything together into a highly integrated, efficient energy management platform.

• All-in-One PCS + BMS + EMS Design: As the central brain of the EMS, the EMU seamlessly integrates with the PCS and BMS—eliminating the communication delays and compatibility issues often found in traditional, separated systems. This fully integrated design simplifies system deployment, reduces installation and commissioning time, and significantly improves overall system stability and reliability.

• Smart Charging Strategy: The EMU leverages AI algorithms to analyze historical load data, electricity pricing, and even solar power forecasts to create smart charge and discharge strategies. For example, it can automatically charge during low-price hours and discharge during high-price periods to maximize savings. Additionally, it supports demand control based on user-defined contract capacity thresholds, helping users avoid penalties for overconsumption.

• Millisecond-Level Grid Switching: Through its built-in Static Transfer Switch (STS), the EMU enables the Proteus system to perform seamless switching between grid-connected and off-grid modes in under 20 milliseconds during power outage. This gives the Proteus System UPS-grade functionality, ensuring uninterrupted power supply for critical loads and significantly boosting power resilience.

• Microgrid-Forming Capability: In off-grid mode, the EMU works with the PCS to operate in grid-forming mode, delivering independent voltage and frequency control. This allows the Proteus system to serve as the core of a microgrid, capable of operating in conjunction with solar PV and other distributed energy resources to form a self-sustaining local grid.

• Remote Monitoring & Smart Dispatch: The EMU supports open communication protocols, allowing integration with Taipower's demand response platforms or third-party energy management services, enabling advanced smart dispatch such as Virtual Power Plants (VPPs). Users and O&M personnel can remotely monitor system status and adjust operational parameters via a web interface or mobile app, enabling flexible and efficient remote system management.

• Local Human Machine Interface (HMI): Each cabinet is equipped with a local touchscreen HMI, enabling on-site personnel to directly access real-time system status, view alerts, and adjust parameters—improving field operation and maintenance efficiency. 
  

In Summary, The EMU is one of the core competitive strengths of the Proteus C&I Energy Storage Integrated System. Beyond providing powerful monitoring and control capabilities, it leverages advanced algorithms and deep system integration to deliver outstanding performance, safety, and economic value. This makes Proteus an ideal solution for commercial and industrial users in Taiwan seeking to optimize energy management and enhance power resilience.

2.4 EMS System Architecture Overview

2.4.1 EMS Classification

Classified by Architecture

Classified by Application Function

Classified by System Architecture

NoonSpare Development Roadmap

Currently, NoonSpare’s EMU (Energy Management Unit) is positioned as a device-level EMS, with a focus on localized real-time control, islanding protection, and power balancing—specifically tailored to meet the immediate operational needs of behind-the-meter (BTM) C&I applications.

Looking ahead, as market demand grows for Demand Response (DR), Automatic Frequency Control (AFC), and Virtual Power Plants (VPPs), NoonSpare will gradually expand its EMS capabilities toward site-level EMS, enabling cross-cabinet coordination, energy optimization, and microgrid functionality. Ultimately, the company aims to advance to an aggregated-level EMS, integrating multi-site resources to directly participate in power trading and market dispatch.

In terms of system architecture, NoonSpare will adopt a layered EMS framework, evolving from device-level, to site-level, and ultimately to aggregated platform. This step-by-step approach—from single-cabinet control to cross-site integration—aligns with global EMS development trends.

2.4.2 Cloud Platform Strategy

As the scale of energy storage systems continues to grow, local on-premise control alone is no longer sufficient to meet the multi-site and cross-regional management requirements of modern operations. This makes the adoption of cloud-based platforms a critical consideration in the evolution of EMS architecture.

Device-Level vs. Non-Device-Level EMS

Why Cloud Integration Matters for EMS?

Benefits of Cloud Integration

3. Marketing Positioning

In the midst of a global energy transition, are you struggling with soaring electricity costs, unreliable power supply, or increasingly stringent sustainability regulations? At NoonSpare, we understand your challenges—and we’re here with a game-changing solution: the “EMU Local Energy Management Unit”, paired with the “Proteus 125kW–261kWh C&I Energy Storage Integrated System”. This is not just a set of equipment; it is a key tool for your company to move toward energy independence, cost optimization, and sustainable development.

3.1 Your Challenges, Our Solutions

As a commercial or industrial energy user, you may be facing: 

• High Electricity Cost: Electricity costs remain high during peak hours, and basic electricity charges increase according to contracted capacity, causing your operating costs to rise steadily.

• Risk of Unstable Power Supply: power grid fluctuations and outages may cause production line stoppages and data loss, resulting in significant economic losses.

• Pressure from Green Energy Regulations: In the face of The Heavy Electricity Users Clause and carbon emission regulations, how can one effectively fulfill environmental responsibilities and increase the proportion of green electricity usage?

• Energy Management Complexity: How can we accurately monitor electricity usage data, optimize energy efficiency, and achieve intelligent management?

The Proteus C&I Energy Storage Integrated System, powered NoonSpare's self-developed EMU Local Energy Management Unit, is engineered to solve these pain points. It acts as your "Smart Energy Steward", delivering a seamless, intelligent energy management experience tailored to your operational needs. 

3.2 Proteus + EMU: Your Smart Energy Steward

The core advantage of the Proteus System lies in its design philosophy of 'integration, intelligence, and reliability,' and the EMU system is precisely the key that endows it with intelligence and soul. Let's take a look at how it creates value for you:

3.2.1 Reduce Electricity Costs and Generate Revenue: Precise Energy Arbitrage and Demand Management 

• Peak Shaving and Valley Filling to Reduce Electricity Costs: The EMU system can automatically charge the Proteus Energy Storage System during off-peak hours when electricity prices are lower (such as at night) according to Taipower's latest time-of-use pricing strategy, and release the stored electricity during peak hours when prices are high (such as during the daytime) for use in your factory or building. It's like having a 'power bank': you 'deposit' when electricity is cheap and 'withdraw' when electricity is expensive, effectively reducing your monthly electricity bills. For factories and commercial buildings with significant peak loads, this can significantly lower electricity costs.

• Contract Demand Optimization to Avoid Penalties: The EMU system can monitor your power load in real time, and when the load is about to exceed the contracted capacity, it automatically dispatches the Proteus system to discharge, urgently suppressing instantaneous load to prevent triggering high contracted capacity overage penalties. This allows you to manage contracted capacity more flexibly and reduce basic electricity costs.

• Participate in Demand Response and Earn Extra Profits: The Proteus system can help you participate in Taipower's 'demand response' program. When the power grid requires support, the EMU system can automatically dispatch the energy storage system to release electricity, allowing you to receive Taipower's electricity bill reductions or compensation, creating additional revenue for your business.
  

3.2.2 Uninterrupted Power Supply, More Resilient Operations: Millisecond-Level Backup and Microgrid Capability

• Millisecond-level Seamless Switching, Uninterrupted Power for Critical Equipment: The Proteus System features a built-in Static Transfer Switch (STS). In the event of a utility power outage or interruption, the EMU system can command Proteus to automatically switch to off-grid power mode within 20 milliseconds, continuously powering your critical loads such as precision equipment, production lines, medical devices, and data centers. This is several hundred times faster than the startup speed of traditional diesel generators, truly achieving 'zero interruption' power supply, and preventing production losses and data risks.

• Creating Independent Microgrids for Greater Energy Autonomy: For islands, remote areas, or sites with extremely high requirements for power stability, the Proteus System has the capability to operate independently off-grid. The EMU system can work together with PCS to build a stable microgrid, forming a self-sufficient power supply system with renewable energy sources such as solar power, significantly reducing dependence on external grids and enhancing energy autonomy.
  

3.2.3 Smart Management, Maximum Safety: Advanced Technology and Multiple Protections

• Energy Management Unit (EMU): The EMU is the intelligent brain of Proteus. It can monitor system operating conditions in real time, collect data, intelligently schedule charging and discharging, and provide remote monitoring and control functions. No matter where you are, you can track energy usage anytime through a web interface or mobile app, enabling precise management.

• Advanced Liquid Cooling to Extend Battery Life: Proteus features an efficient liquid-cooling system that maintains battery temperature within the optimal range. This not only enhances system performance but also significantly extends battery lifespan—especially critical in Taiwan’s hot and humid environment.

• Multi-layer Fire Safety to Protect Life and Property: We consider safety as our highest priority. The Proteus System features multi-layer active and passive fire protection, including module-level thermal runaway prevention, built-in smoke and temperature sensors within the cabinet, aerosol automatic fire suppression devices, and fire-resistant heat insulation design. These stringent safety measures ensure the system operates flawlessly, giving you the full security.

• Modular Design and Flexible Expansion: The Proteus system adopts a modular design, with a single cabinet capacity of 125kW/261kWh. It can be flexibly expanded according to your actual needs, gradually scaling from hundreds of kWh to several MWh, avoiding a large one-time investment, and allowing you to incrementally increase energy storage capacity as your business grows.
  

3.3 Choose NoonSpare, Choose the Future

NoonSpare not only provides leading energy storage products but also offers comprehensive localized services and technical support. We are committed to:

• Professional Consultation: Our team of experts will provide the most suitable energy storage solutions based on your actual electricity needs.
• Rapid Deployment: Integrated design and modular features ensure quick system installation and commissioning. 
• Comprehensive After-Sales Service: Our localized service team provides timely maintenance and technical support to ensure long-term stable operation of the system.
  
  

Choosing NoonSpare's Proteus C&I Energy Storage Integrated System means selecting a smarter, more efficient, and safer energy future. Let's work together to open a new chapter in energy management!