Shopping Center Solution
With a growing global focus on sustainable energy, Japan is actively promoting the adoption and development of green energy solutions. In line with this vision, a landmark shopping center located in Minato, Tokyo, known for its comprehensive commercial offerings, including shopping, dining, and entertainment, aims to enhance its energy efficiency and sustainability.
Project Overview
Available Only Through Renon Power
Project Location Overview
Green energy for a resilient future.
Location: Situated in Minato, Tokyo, a bustling commercial hub.
Power Demand: High, with 24 7 operations and heavy foot traffic, especially during peak hours.
Environmental Focus: Committed to reducing carbon footprint and enhancing sustainability.
Emergency Preparedness: Requires stable backup power due to frequent earthquakes in Tokyo.
Energy Storage Solution Overview
3 MWh distributed storage, 1.5 MW output.
The system features a total storage capacity of 3 MWh, composed of 13 distributed storage units of 233 kWh each. It offers a maximum output power of 1.5 MW, with each unit equipped with a 125 kW Power Conversion System (PCS), ensuring efficient energy management and reliable power supply.
PV System Features Overview
Solar-powered self-sufficiency with emergency backup.
The solution includes a rooftop photovoltaic system to generate electricity primarily for the shopping center s own use. In case of a grid outage, the system ensures uninterrupted operation of critical facilities, such as elevators, lighting, and ventilation systems.
Integrated Backup Solution
Seamless backup with integrated diesel generation
In extended power outages, an automated diesel generator integrates with the energy storage system to ensure continuous power supply.
Smart Energy Management
Smart energy, always in control.
The intelligent energy management system coordinates the operation of photovoltaics, energy storage, and diesel generators to deliver efficient and stable power supply.
A Resilient Energy Solution for the Future.
Empowering Green, Ensuring Reliability
This project integrates solar self-consumption, energy storage, and diesel generators to provide stable and reliable power to the shopping center, reducing dependence on the traditional grid and enhancing energy self-sufficiency and resilience to unexpected events. This comprehensive solution not only boosts the shopping center s energy efficiency but also sets a sustainable example for the surrounding community.
Core Component Selection
Renon Power Specialization
Battery System Selection
Selection: RENON 233kWh Liquid-Cooled Energy Storage System
Rationale: The RENON 233kWh liquid-cooled system, developed in-house, integrates liquid-cooled battery modules, cooling units, a Battery Management System (BMS), modular Power Conversion Systems (PCS), and an on-site Energy Management System (EMS). A configuration of 13 units creates an array that includes an AC distribution cabinet, incorporating the power distribution system, Automatic Transfer Switch (ATS), and a station-level EMS.
Benefits: This comprehensive system ensures efficient energy storage and management, offering high reliability and flexibility to meet diverse energy requirements.
Advantage: The all-in-one design optimizes space, simplifies maintenance, and enhances overall system reliability and operational efficiency.
PV System Power Configuration
Configuration: 1.5MW Photovoltaic (PV) System
Rationale: A 1.5MW photovoltaic system is designed based on an estimated effective daily generation period of 5 hours. Under normal operating conditions, this PV system provides 800kW of power to the shopping center s electrical load, while the excess 700kW is stored in the battery system.
Benefits: This configuration optimizes solar power utilization by directly supplying the shopping center s energy needs and storing surplus energy for later use, enhancing energy independence and cost savings.
Advantage: The system maximizes renewable energy usage, reduces dependency on grid power, and supports sustainable energy management strategies.
STS & ATS Configuration
Functionality: STS (Static Transfer Switch) and ATS (Automatic Transfer Switch)
Selection: Integrated within the power distribution system.
Rationale: To simplify the system architecture and enhance overall efficiency and response speed, the functionalities of the STS and ATS have been integrated directly into the power distribution system. This integration enables seamless switching between photovoltaic power, battery storage, and diesel generators without the need for additional hardware.
Benefits: The integrated design reduces installation costs and minimizes potential failure points, while also improving the system s response time and overall performance.
The system employs liquid cooling for effective battery thermal management, maintaining a temperature variance of less than 4 degrees Celsius across the cells, which significantly extends battery lifespan. The liquid cooling solution is highly energy-efficient, consuming less power than traditional air conditioning methods, thereby enhancing the overall return on investment for the system.
Advanced AC Distribution System
The intelligent AC distribution system supports AC coupling for up to 16 units of 233kWh per array. It features a station-level Energy Management System (EMS) for comprehensive monitoring and control. The integrated Automatic Transfer Switch (ATS) and Static Transfer Switch (STS) within the Power Conversion System (PCS) streamline the system architecture, enhancing efficiency and response speed through automated switching capabilities.
Integrated Energy Storage and Management Solution
This system combines a 233kWh liquid-cooled lithium-ion battery array with a 125kW Power Conversion System (PCS) for optimal energy storage and conversion. The built-in Energy Management System (EMS) offers remote monitoring and efficient energy scheduling, enhancing operational performance and reliability. This intelligent design ensures a seamless and sustainable energy solution.
System Advantages
Smart Management and Remote Monitoring
The intelligent energy management and remote monitoring platform enable farm managers to monitor system status in real-time and optimize operational strategies. Advanced diagnostic tools provide proactive fault detection, enhancing system availability and reducing maintenance costs.
High Reliability
The system ensures continuous and stable power supply under all conditions, thanks to the Automatic Transfer Switch (ATS) and Static Transfer Switch (STS). Additionally, the precise liquid cooling management strategy prevents battery overheating, enhancing the overall reliability of the system.
Significant Economic Benefits
The integration of self-generated photovoltaic power with the energy storage system significantly reduces electricity costs for the shopping center. Intelligent energy scheduling minimizes unnecessary diesel generator operation, saving fuel expenses and further lowering overall operational costs.
