Fox ESS Achieves HTW 2025 A-Class Certification for Energy Storage System

Recently, HTW Berlin (University of Applied Sciences) released Energy Storage Inspection 2025 Report, assessing the energy efficiency and performance of several home energy storage systems. In this globally authoritative evaluation, Fox ESS, with self-developed energy storage systems, including the H3 Hybrid Inverter and ECS, was the only Chinese brand to receive an A-Class rating, demonstrating outstanding performance in energy efficiency and technological stability.

HTW Berlin: A Leading Institution in Global Energy Storage Technology Assessment

HTW Berlin, a renowned German university of applied sciences, is globally recognized for its pioneering research in energy storage technologies. Its annual ‘Storage Inspection’ reports are among Europe’s most trusted evaluations, rigorously testing and assessing energy storage systems under real-world conditions. This research plays a crucial role in advancing the development and adoption of efficient, reliable energy storage solutions.

Technological Innovation and Self-Development Advantages

In this evaluation, Fox ESS’s H3 Hybrid Inverter and ECS system received an A-Class rating with a performance index (SPI) of 94.8% in the 10kW residential storage system test. The system not only demonstrated excellent conversion efficiency under high power loads but also achieved outstanding energy conversion and stability with self-developed storage batteries and inverters. This result reflects Fox ESS’s continued investment and breakthroughs in energy storage technology innovation and research.

High-Efficiency Energy Conversion: Optimized Design Brings Advantages

The SPI Index is an important measure of the energy efficiency of energy storage systems. Fox ESS’s system achieved a high efficiency with minimal energy conversion losses, improving the overall system efficiency and stability through optimized design. This continuous innovation offers more efficient and reliable energy storage solutions to global residential users.

Looking Ahead: Continuing to Drive Green Energy Innovation

This recognition of Fox ESS’s technological innovation and self-development capabilities is a significant milestone. Fox ESS will continue to uphold innovation-driven approach, advancing the popularity and development of green energy, and providing smarter, more efficient energy storage solutions to global users. Fox ESS strives to make renewable energy accessible to every household, contributing to a greener and more sustainable future for global families and businesses.