Energy storage inverters, referred to as Power Conversion Systems (PCS), play a central role in energy storage systems. As a key component, the PCS connects energy storage batteries, the grid, solar photovoltaics (PV), diesel generators, and electrical loads, acting as a "bridge" that enables seamless integration. Its performance directly affects the overall efficiency and stability of the energy storage system. This article aims to provide a comprehensive introduction to Growatt's energy storage inverters and smart energy management applications and solutions.

Growatt offers a range of grid-connected energy storage inverters (3-15kW) for residential users in regions with developed grids, including single-phase low-voltage SPH (3-10kW), three-phase high-voltage SPH (4-10kW), and three-phase low-voltage WIT (8-15kW). These inverters help users increase self-consumption of solar energy, reduce electricity costs, and provide backup power during emergencies. The systems support Virtual Power Plant (VPP) smart scheduling and IoT device integration. Paired with the GroHome energy management solution, the system integrates solar energy, energy storage, smart charging stations, underfloor heating, IoT smart devices, and a cloud platform for energy management. Using big data and AI technologies, the system accurately predicts PV generation and household energy consumption habits, determines the optimal energy strategy, reduces energy consumption and emissions, maximizes the use of green energy, and leads the trend of comfortable, intelligent, and sustainable home energy storage management.

Growatt provides off-grid and hybrid energy storage inverters (3-15kW) for residential users in areas with weak or no grid infrastructure in Asia, Africa, and Latin America. The product lineup includes single-phase off-grid SPF (3-6kW), single-phase hybrid SPE (3.5-12kW), single-phase hybrid SPH (3-10kW), and three-phase hybrid WIT (3-15kW). These inverters support up to nine parallel units and can operate both single-phase and three-phase systems. They help users build off-grid or hybrid energy storage systems ranging from 3 to 108kW, solving power stability issues in areas with unreliable or no electricity.

For regions with developed grids, Growatt offers WIT 8-100kW PV energy storage solutions that are DC-coupled, maximizing self-consumption of PV energy while optimizing peak shaving and valley filling. These systems contribute to reducing electricity costs and achieving green, low-carbon commercial and industrial energy use. In regions with weak grid infrastructure, these products provide intelligent microgrid solutions for commercial and industrial environments, addressing power stability and cost-saving needs. The WIT series also supports parallel unit expansion, allowing up to 3-6 units to be connected for a total power range of 8-300kW. These systems can be integrated with generators, feature intelligent load control, and support off-grid overload capabilities of 1.5 times the rated power, as well as 100% three-phase unbalanced output.

Drawing from extensive experience in the development, manufacturing, and application of solar energy grid-connected inverters, Growatt has launched the WIS 100-215kW series for commercial, industrial, and large-scale energy storage systems. These PCS units use a string inverter design and have an IP66 protection rating, ensuring superior environmental adaptability and long-term reliability. They are backed by a warranty of 5 years or more. The WIS 125kW PCS is modular, facilitating integration into commercial and industrial energy storage cabinets, especially suitable for integrated cabinets using 314Ah cells (125kW/261kWh). The WIS 215kW PCS employs side-entry wiring to avoid the inconvenience of bottom-entry wiring, supports up to 24 parallel units, and can quickly integrate into string inverter boost systems for 5MW-level products.

In addition to providing a full range of PCS products, Growatt offers mature, stable, and flexible smart energy management solutions. The WiFi, 4G, LAN, and WiLAN data collectors used for single-device monitoring can be flexibly selected. For multi-device monitoring, the GroHome Manager, Shine Link-X, and Shine SEM-X devices can be chosen based on the specific application scenario. These are complemented by a mature cloud-based monitoring and operation and maintenance (O&M) platform, ShineServer, OSS, and RuiChou CloudView. Growatt's energy management platform supports remote parameter setting, fault diagnosis, one-click PCS upgrades, and one-click battery BMS upgrades. This helps customers save on O&M costs, improves operational efficiency, and enables proactive O&M.

It is particularly worth noting that Growatt's centralized multi-unit parallel control energy management solution has unique advantages compared to traditional master-slave monitoring systems. In the traditional system, each device requires a separate data collector, multiple networking operations, and is cumbersome to manage. Additionally, it cannot respond to external scheduling or system-level reverse current control, and only identical models can be paralleled. If one unit fails, the entire system is affected. In contrast, Growatt's multi-unit parallel control solution only requires one SEM-X monitoring host, enabling a one-stop network setup. It supports third-party EMS scheduling, system-level responses, and reverse current control, facilitating the seamless integration of solar energy, energy storage, and diesel generators. Furthermore, different models and power ratings of inverters and PCS units can be paralleled, making it a truly intelligent energy management solution.