Compact cabinet energy storage equipment for solar panels

The use of solar energy is playing an increasingly important role in both industrial and domestic energy supply, but the energy generated must also be stored efficiently and safely. Compact cabinet energy storage systems for solar panels help with this by offering high-performance yet space-saving solutions. These systems store the energy generated during the day for later use, thereby increasing the self-consumption ratio and reducing the load on the electricity grid.

One of the most important advantages of modern solar energy storage systems is their scalability and high performance. Cabinet-type systems that meet industrial requirements, such as the SolaX Trene 215Kwh available from SOLARKIT , allow multiple inverters and energy storage units to operate in parallel. This solution is ideal for factories, logistics centers, and energy-intensive plants where a reliable, safe, and continuous power supply is of paramount importance.

In this article, we will explain how compact energy storage systems work, what their advantages are, what factors to consider when selecting capacity, and share the experiences of SOLARKIT's team of experts on the latest technologies.

Compact solar energy storage: principles and operation

The purposeof compact cabinet energy storage devices from is to ensure that the electricity generated during the day is not only used immediately, but is also available later, as needed. 

The process works as follows: Tongwei or Longi Solar solar panels installed on the roof generate direct current (DC), which is converted by an inverter into alternating current (AC) for domestic or industrial consumption. However, if production exceeds current consumption, the surplus is fed into an energy storage unit, thus reducing grid dependency.

The main components of the system are:

• Battery modules (e.g., lithium-ion cells)
  
  
• Inverter, which provides AC/DC conversion and grid synchronization.
  
  
• Heat and safety management (e.g., cooling/heating, fire protection system) to ensure proper operation.
  
  
• Control and monitoring system that monitors battery charge, consumption data, and optimizes system operation.
  

The so-called cabinet design means that the entire energy storage system is installed in a ready-made "cabinet" or modular units, making it easier to expand and suitable for industrial-scale systems.

Cabinet energy storage systems with 60–250 kWh modules are a scalable solution

The most important feature of cabinet energy storage solutions is their modularity and scalability. These systems are designed so that performance and storage capacity can be expanded as needed, allowing every business to tailor energy storage to its own energy needs. The SolaX Trene 215 kWh systems available from SOLARKIT allow multiple inverters and energy storage units to operate in parallel.

Examples of high-capacity systems: SolaX Trene 215kWh 100kW AC connected P100B215-I

The SolaX Trene 215kWh 100kW AC connected P100B215-I is one of the most advanced cabinet energy storage solutions, designed specifically for industrial-scale solar systems. The model available in the SOLARKIT range allows for the parallel operation of multiple inverter units, so the system can be scaled up to 100 kW while retaining the advantages of a compact, modular design.

Key features of the product:

• Nominal power: 100 kW, ideal for powering large corporate, industrial, and commercial facilities.
  
  
• EPS (Emergency Power Supply) function: provides uninterrupted power supply, enabling it to operate independently even in the event of a power failure.
  
  
• Fully integrated cabinet system: includes battery modules, control and safety units, making it quick to install.
  
  
• Enhanced safety: IP65 protection, equipped with surge, temperature and fire protection systems.
  
  
• Flexible configuration: multiple cabinet units can be connected together, allowing capacity to be increased gradually in line with future requirements.
  
  
• Integration compatibility: fully compatible with the SolaX inverter family and BMS systems.

Advantages of cabinet energy storage systems

Cabinet-type energy storage is one of the most compact and efficient solutions available on the market today. These energy storage systems were developed with the aim of providing maximum performance and safety with minimum space requirements, while being easily adaptable to different solar system configurations.

Another key advantage of compact cabinet systems is their quick installation and integration. Since all main units (battery, inverter, control) are located in a closed, pre-configured housing, installation time can be reduced by up to 40-50% compared to traditional systems built from separate components. This is particularly advantageous in industrial environments, where minimizing downtime is critical from a business perspective.

Space-saving design and modular expandability

The biggest advantage of the cabinet energy storage system is that it contains all the main components required for energy storage in a single enclosed cabinet – the battery modules, the inverter, and the safety and control units. This design not only makes the system safer and easier to install, but also minimizes space requirements, which is particularly important in industrial facilities.

Sustainability: smaller ecological footprint with solar energy storage

Solar energy storage is one of the most important pillars of sustainable energy. A modern energy storage solar panel not only increases efficiency but also reduces the impact on the environment. The battery technology offered by SOLARKIT uses recyclable materials and ensures a long service life (more than 6,000 charging cycles).

The system directly utilizeslocally generated energy, reducing the amount of electricity that needs to be purchased from the grid, which lowers CO₂ emissions and supports corporate green energy goals.

Typical considerations for selecting compact solar energy storage capacity

Choosingthe right energy storage system is not only a technical issue, but also an economic one. The goal is for the system to be able to store enough energy from the surplus generated during the day, but at the same time not to be oversized, as this would result in unnecessary investment costs. The most important considerations are as follows:

1. Consumption profile and peak load:

The first step is to assess your electricity consumption pattern. It is important to know when your energy consumption is highest and what your average daily demand is. Ideally,a cabinet energy storage system can cover 30-60% of your daily energy consumption, significantly reducing your consumption from the grid.

2. Solar panel system performance:

The performance of the solar panel system must be matched to the capacity of the energy storage system. For example, if a 100 kW system generates 400-500 kWh of energy per day, a storage system with a capacity of 120-250 kWh will be sufficient to store some or all of the energy generated during the day .

3. Future expandability:

One of the biggest advantages of cabinet-type systems is their modularity—if the company's energy needs increase, the system can be expanded with additional cabinets, even in thelong term. 

SOLARKIT experiences and recommendations

SOLARKIT has been developing, selling, and installing solar energy systems and energy storage solutions for solar panel systems for several years . Based on our experience , compact cabinet energy storage devices deliver outstanding performance in areas where energy consumption is high, but reliability and space efficiency are important.

Frequently asked questions

What is the difference between a household battery and a cabinet energy storage system?

A household battery is a smaller energy storage device, typically with a capacity of 5–20 kWh, which is used to increase self-consumption in family homes. Cabinet energy storage, on the other hand, is designed for industrial or commercial applications where greater energy requirements need to be met.

How safe is a large-capacity energy storage system?

Modern energy storage devices are protected by multiple layers of safety features: temperature monitoring, fire detection, and built-in overvoltage and short-circuit protection. The SolaX systems in the SOLARKIT range are housed in IP65-rated enclosures and comply with European standards. In addition, the battery cells use LiFePO₄ technology, which is thermally stable and non-flammable.

Is it possible to connect multiple energy storage cabinets in a single system?

Yes. One of the main advantages of Trene systems is their expandability. Multiple modules can operate in parallel, allowing the total capacity to be gradually increased as consumption increases. This solution is not only technically simple, but also cost-effective, as there is no need to oversize the system in a single step.

Who is the cabinet-type energy storage system recommended for?

Cabinet energy storage is an ideal choice for factories, industrial sites, office buildings, logistics centers, or agricultural businesses where the amount ofenergy generated during the day exceeds immediate consumption. It helps balance peak loads and reduces grid energy demand.

What maintenance does a cabinet energy storage system require?

The batteries and inverters distributed by SOLARKIT require minimal maintenance. The systems have an automated monitoring function that remotely monitors temperature, cell status, and energy flow. Annual servicing is mainly limited to checking contacts, software updates, and inspecting the cooling system.