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Deye’s Residential ESS Secures Dual ECHONET Lite Certification Photograph: (Archive)
Deye has secured dual certification for ECHONET Lite and ECHONET Lite AIF for its residential energy storage system (ESS), enabling integration with Japan’s home energy management systems (HEMS) and broader smart home ecosystem.
The certification allows Deye’s systems to connect with household devices such as air conditioners, lighting, photovoltaic systems and storage units through a unified interface, addressing interoperability challenges in Japan’s fragmented smart home market.
The development comes as Japan accelerates adoption of smart and energy-efficient housing. Under the updated 2025 GX ZEH framework, battery storage and HEMS are increasingly becoming standard installations, reflecting a shift toward structurally embedded energy management systems.
At the same time, the emergence of virtual power plants (VPPs) and rising demand for real-time energy monitoring are driving the need for integrated, app-based control of residential energy systems.
ECHONET Lite, a widely adopted communication protocol in Japan, enables interoperability across devices from multiple manufacturers, positioning residential storage systems as central energy management hubs rather than standalone backup units.
Deye said its ESS leverages integration with smart meters and HEMS to optimise energy usage using weather forecasts, time-of-use tariffs and consumption patterns. The system dynamically adjusts charging and discharging cycles to improve self-consumption and reduce electricity costs.
The system also enhances backup capabilities by automatically switching to off-grid mode during outages, ensuring power supply to critical loads while allowing users to manage stored energy through centralised controls.
Introduced in 2012 and backed by Japan’s Ministry of Economy, Trade and Industry, ECHONET Lite has evolved into a core standard for smart energy integration across residential and commercial applications.
Deye said the dual certification aligns its products with Japan’s technical standards while supporting localisation requirements in one of the world’s most advanced smart energy markets.
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