NEXTES Becomes First in Japan to Receive KHK Certification for Battery Packs
NEXTES has become the first company in Japan to receive the 'Fire-Resistant Storage Box Test Confirmation Certificate' from the High Pressure Gas Safety Institute of Japan (KHK) for its battery packs used in grid-scale energy storage systems. This certification eases fire safety regulations, allowing for improved land utilization and simplified administrative procedures.
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- 📰 Published: May 27, 2026 at 10:00
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NEXTES Co., Ltd. (Headquarters: Setagaya-ku, Tokyo; CEO: Masatake Inoue) announced that its battery packs, used in its grid-scale energy storage systems, have received the 'Fire-Resistant Storage Box Test Confirmation Certificate' from the High Pressure Gas Safety Institute of Japan (KHK). This is the first instance in Japan of a battery pack used in a grid-scale storage system receiving this certification.
■ About the Certification
The 'Fire-Resistant Storage Box Test Confirmation Certificate' is based on the 'Fire Safety Notification No. 200' issued by the Fire and Disaster Management Agency on July 2, 2024, which sets standards for the safe handling of lithium-ion batteries. KHK conducts testing to verify compliance with these standards.
■ First in Japan: Certification for Battery Packs
Previously, certifications were limited to containers or storage boxes. NEXTES has achieved this for the battery pack itself, the core component of the storage system. This significantly relaxes fire safety regulations, as the packs are now treated as 'trace hazardous materials.'
■ Benefits for Operators and Municipalities
1. Enhanced Safety: The fire-resistant certification prevents fire spread between packs, minimizing potential damage.
2. Simplified Procedures: Products using these packs are exempt from certain strict fire department permits, reducing administrative burdens and project timelines.
3. Improved Land Efficiency: The elimination of required 'buffer zones' (empty space) between batteries allows for higher energy density on the same plot of land, significantly improving project profitability.
■ Future Outlook
NEXTES will continue to leverage its proprietary technology to promote safe energy storage systems, contributing to the resolution of Japan's energy challenges.
■ About the Certification
The 'Fire-Resistant Storage Box Test Confirmation Certificate' is based on the 'Fire Safety Notification No. 200' issued by the Fire and Disaster Management Agency on July 2, 2024, which sets standards for the safe handling of lithium-ion batteries. KHK conducts testing to verify compliance with these standards.
■ First in Japan: Certification for Battery Packs
Previously, certifications were limited to containers or storage boxes. NEXTES has achieved this for the battery pack itself, the core component of the storage system. This significantly relaxes fire safety regulations, as the packs are now treated as 'trace hazardous materials.'
■ Benefits for Operators and Municipalities
1. Enhanced Safety: The fire-resistant certification prevents fire spread between packs, minimizing potential damage.
2. Simplified Procedures: Products using these packs are exempt from certain strict fire department permits, reducing administrative burdens and project timelines.
3. Improved Land Efficiency: The elimination of required 'buffer zones' (empty space) between batteries allows for higher energy density on the same plot of land, significantly improving project profitability.
■ Future Outlook
NEXTES will continue to leverage its proprietary technology to promote safe energy storage systems, contributing to the resolution of Japan's energy challenges.
FAQ
How does this Japanese certification relate to Taiwan's energy storage market?
As Taiwan tightens fire safety regulations for energy storage, Japan's move toward component-level certification provides a benchmark for safety and efficiency.