Deye’s residential energy storage solution has successfully obtained system-level certification from Japan Electrical Safety & Environment Technology Laboratories (JET), along with dual certification for ECHONET Lite and ECHONET Lite AIF. This milestone confirms that Deye’s solutions fully comply with Japan’s strict requirements for safety, reliability, and smart connectivity, further strengthening its position in the Japanese residential energy storage market.

Safety Validation: Battery Certified to JIS C 8715-2

The GB-A battery series is a stackable battery solution designed specifically for Japanese households, offering flexible capacities of 4kWh, 10kWh, and 16kWh with an IP65 protection rating. It is suitable for both backup power and self-consumption scenarios.

The system has been rigorously tested in accordance with JIS C 8715-2:2024, covering key aspects such as electrical safety, mechanical integrity, environmental adaptability, system protection, thermal runaway control, material structure, and performance consistency. This certification demonstrates the battery’s capability to operate reliably across Japan’s diverse climate conditions, including high temperature, humidity, and coastal environments.

Safety Compliance: Inverter Certified to JIS C 4412

Deye’s inverter has also passed JIS C 4412:2021 and CISPR11 Ed.6.2:2019 certification, a key safety standard for low-voltage energy storage systems in Japan. The certification includes comprehensive testing in electromagnetic compatibility (EMC), electrical safety, structural integrity, and environmental durability, ensuring stable and safe system operation.

Smart Connectivity: ECHONET Lite & AIF Dual Certification

At the same time, Deye residential ESS has obtained dual certification from ECHONET Lite and ECHONET Lite AIF. As the standard communication protocol for Japan’s Home Energy Management Systems (HEMS), ECHONET Lite enables seamless integration with mainstream HEMS platforms and smart home ecosystems. This ensures full compatibility across different brands, allowing users to conveniently manage household devices - including air conditioning, lighting, photovoltaic systems, and energy storage - through a unified interface via smartphone or centralized control systems.

Through ECHONET Lite integration, the energy storage system can coordinate with other household devices to enhance overall emergency backup capability. In the event of a power outage, the HEMS can communicate with the storage system via ECHONET Lite to automatically switch to off-grid mode, ensuring continuous power supply to critical loads. This coordinated operation improves household resilience and enables a more intelligent and service-oriented energy experience.

Certified System Models

The certified residential ESS models (split-type) include:

SUN-8K-16KWH-SG02HP2-JP-FM4

SUN-8K-10KWH-SG02HP2-JP-FM4

SUN-5.5K-16KWH-SG02HP2-JP-FM4

SUN-5.5K-10KWH-SG02HP2-JP-FM4

SUN-4.95K-10KWH-SG02HP2-JP-FM4

Conclusion

With JET system certification, combined with compliance to key Japanese standards and ECHONET Lite integration, Deye’s residential ESS fully meets the market’s core demands for safety, reliability, and intelligence. This achievement not only reflects strong recognition from the Japanese market but also marks an important step forward in Deye’s journey toward high-end energy storage solutions. Deye will continue to leverage advanced certification systems to deliver safer, smarter, and more reliable energy solutions for households in Japan.