2.5 MW/4 MWh Energy Storage System
Case introduction

CASE

Case

2.5 MW/4 MWh Energy Storage System

This project is located in the Baltic region of Eastern Europe and is an expanded energy storage system that supports its existing solar power station. It is primarily driven by the combination of “dynamic electricity pricing mechanism + technological cost reduction,” actively participating in the Nordic Power Exchange and implementing a peak-valley arbitrage profit model.



Project Introduction

This project is located on the Baltic coast of Europe, targeting the Eastern European market. It addresses power supply fluctuations through an efficient energy storage system. By introducing a 2.5 MW/4 MWh energy storage system, the project provides a flexible solution for energy storage and release to the grid in an environment with 15-minute electricity price fluctuations. The project is designed for an initial small-scale pilot, which will strongly support the stable operation of the local power system and the integration of renewable energy.

Project Details

Application

The energy storage system in this project is primarily applied to short-term power scheduling and energy storage in the electricity market. The system supports 15-minute electricity price trading and can respond quickly to grid demands, performing energy storage and electricity sales operations. It not only optimizes the balance between electricity supply and demand, reducing the impact of price fluctuations on power consumers, but also supports the integration of renewable energy, enhancing the reliability of the grid.

Installed Capacity

The project is configured with 2 units of 2000 kWh energy storage containers, providing a total energy storage capacity of 4000 kWh (or 4 MWh).

Main Equipment

  • Energy Storage System: Composed of 2 units of 2 MWh energy storage containers, using air-cooled battery packs and high-voltage battery box designs.
  • Grid Connection and Off-Grid Switching System: Supports flexible power scheduling, with the system automatically switching between grid-connected or off-grid modes based on power demand.
  • Energy Management System (EMS): Installed in the distribution cabinet, it monitors the real-time operation status of the energy storage system, optimizes the charging and discharging process, improves energy storage efficiency, and extends battery life. It also facilitates integration with cloud-based platforms.

Project Video

2.5 MW/4 MWh Energy Storage System on the Baltic Coast of Latvia

Project advantages

C5-Level Corrosion Protection Design
C5-Level Corrosion Protection Design
The project is located along the Baltic coast, where the seawater salinity is relatively low and the elevation is also low. The C5-level corrosion protection design effectively addresses the humid coastal environment, ensuring the durability and safety of the equipment.
Efficient Energy Scheduling
Efficient Energy Scheduling
It is flexible enough to respond to grid load fluctuations, achieving precise power scheduling and optimized energy storage release.
Fast Delivery and One-Stop Service
Fast Delivery and One-Stop Service
The project promises fast delivery and provides factory assembly and commissioning services. With one-stop delivery, the system can be quickly put into operation, saving the customer time and costs.
Environmental Protection and Safety
Environmental Protection and Safety
The system uses an air-cooled battery pack design, avoiding the complexity of water cooling systems. At the same time, the system is equipped with comprehensive safety protection measures to ensure stable and safe operation of the equipment under high pressure and load conditions.
Significant Peak-Valley Price Arbitrage Opportunity
Significant Peak-Valley Price Arbitrage Opportunity
The container energy storage system captures the price difference through the "charge during off-peak hours, discharge during peak hours" strategy, directly generating economic returns. This project leverages the highly integrated design of the container, Europe's mature dynamic electricity pricing mechanism, and energy storage technology. By implementing precise "low storage, high discharge" cross-time arbitrage operations, along with modular design and accurate charge and discharge control, the system maximizes returns.

Core products

Satellite Communication Energy Cabinet
Satellite Communication Energy Cabinet

The Satellite Communication Energy Cabinet is a PV energy storage cabinet from Highjoule Technology Group designed specifically for off-grid satellite communication sites. The system consists of PV modules, an MPPT solar controller, an LFP (Lithium Iron Phosphate) battery pack, a thermal management system, and a power distribution unit, forming a complete off-grid PV generation and energy storage system that provides stable power to satellite communication base stations. The system adopts a modular design and can be efficiently operated and maintained via local and remote monitoring. It supplies 48V DC and AC 120V–200V power to satellite and other industry communication equipment, supporting floor-standing and pole-mount installation.

Outdoor Battery Cabinet
Outdoor Battery Cabinet

The Outdoor Battery product line is centered on green low-carbon, high-efficiency, and intelligent coordination principles. It covers both indoor and outdoor configurations, with lithium batteries (or lead-acid batteries) forming battery energy storage cabinets. Each cabinet also houses environmental sensors, battery circuit breakers, battery cables, and thermal management accessories to form an integrated battery cabinet.

Hybrid Power System
Hybrid Power System

The Site Hybrid Power System is a next-generation multi-energy integrated power supply for 4G/5G base stations, communication equipment rooms, edge data centers, and outdoor compact sites. It breaks the traditional “single grid input, single DC output” architecture to achieve multi-source energy input + multi-voltage output + intelligent coordinated dispatch. At the site level, it accommodates grid power, PV, energy storage, diesel generators, and other sources, delivering a highly reliable, efficient, and simply deployable power framework for 5G equipment, transmission equipment, and IoT loads. Power range: 6 kW–36 kW; available in both 3U and 1U circuit breaker configurations.

Stacked-PV MPPT Solar Controller
Stacked-PV MPPT Solar Controller

The Stacked-PV MPPT Solar Controller is specially developed for PV capacity expansion at base station sites. Using a series-connection scheme, the system consists of PV modules, a stacked-PV MPPT controller, and a DC meter. Each PV string is series-connected to the controller, which steps down the module output voltage to −48V and injects it onto the rectifier output busbar to supply DC loads. Designed for communication base stations, it supports wall-mount and pole-mount installation. The product is available in outdoor and rack-mount versions.

Outdoor Hybrid Energy Cabinet
Outdoor Hybrid Energy Cabinet

The products deeply integrate AC/DC conversion, multi-energy intelligent scheduling, energy storage charge/discharge management, and remote monitoring technologies. Flexibly deployable in indoor equipment rooms, outdoor 5G base stations, and remote sites, they ensure uninterrupted power for communications and critical loads while maximizing green energy consumption, reducing energy use and carbon emissions, and upgrading traditional power supply to a clean, intelligent, integrated site energy solution.

Solution

Professional Integrated "Turnkey" Service System

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