CROSS-STANDARD public interest · Battery energy storage (BESS)

China-to-Japan BESS Compliance Gap Matrix

AI-compiled from official public sources — cross-checked by multiple AI models, not human-verified. Informational only; see disclaimer. Public-interest, source-linked comparison of common China battery energy storage system documentation against Japan PSE/DENAN, Fire Service Act, Electricity Business Act, Radio Act (EMC), and transport and market-access requirements.

Dataset 2026-06-11 Last verified 2026-06-12 9 rows

GAP MATRIX

Compliance Gap Matrix

Gap matrix
Compliance item Common China baseline Japan (PSE / JET) Gap / action Source + verification date
EMC — Radio Act (電波法) and VCCI Voluntary Requirements China's EMC requirements for electrical and electronic equipment are set by the GB/T 17626 series (EMC testing standards, equivalent to IEC 61000 series) and GB 9254 (Information Technology Equipment — Radio Disturbance Characteristics). CCC certification for applicable product categories includes EMC testing. GB EMC test results are not accepted by VCCI or MIC as substitutes for Japanese Radio Act or VCCI compliance verification.GB/T 17626 series — 电磁兼容 测试和测量技术 (EMC testing and measurement, equivalent to IEC 61000 series)
GB 9254-2021 — 信息技术设备无线电骚扰限值和测量方法 (Radio disturbance limits and methods for IT equipment)		 Japan's Radio Act (電波法), administered by the Ministry of Internal Affairs and Communications (MIC), regulates radio frequency (RF) emissions from electronic devices to prevent harmful interference with radio communications. Electrical equipment that generates radio frequency emissions — including power electronics in BESS (inverters, BMS communication modules, converters) — must comply with emission limits set under the Radio Act. Voluntary Control Council for Interference (VCCI), a voluntary industry body, establishes EMC emission limits for information technology equipment based on CISPR standards; VCCI self-declaration is commercially expected and is widely required by Japanese customers and distributors even where not legally mandatory for all product types. Technical standards under the Electricity Business Act also encompass electromagnetic compatibility aspects of high-voltage/power electrical installations.電波法 (Radio Act) — administered by Ministry of Internal Affairs and Communications (MIC)
VCCI (Voluntary Control Council for Interference) — industry voluntary EMC limits based on CISPR 32 / CISPR 11
電気設備に関する技術基準 (Technical Standards for Electrical Equipment) — EMC aspects for power installations		 Chinese BESS inverters, BMS modules, and power conversion equipment must comply with Japanese Radio Act emission limits and obtain VCCI self-declaration (or equivalent) before sale or installation in Japan. Chinese GB EMC test data does not substitute for Radio Act or VCCI compliance. VCCI membership and self-declaration is the standard commercial pathway for EMC compliance in Japan for information technology and power electronics equipment. BESS products with wireless communication modules (Wi-Fi, cellular, Bluetooth) must separately comply with Radio Act technical standards for radio transmitters.[INFORMATIONAL] Chinese BESS power electronics and communication modules must comply with Japanese Radio Act emission requirements before sale or installation in Japan. VCCI self-declaration is the standard commercial pathway and is expected by Japanese customers even where not legally mandatory. Chinese GB EMC certificates do not substitute. Wireless communication modules require separate Radio Act type-certification. Ministry of Internal Affairs and Communications (MIC), Japan — Telecommunications Bureau2026-06-12 · unverified
Fire Service Act — Hazardous Materials Designation for Large Lithium Battery Storage China addresses fire safety for electrochemical energy storage stations primarily through GB/T 51048 (Design Code for Electrochemical Energy Storage Power Station, 2025 revision effective April 1, 2026) and GB/T 42288-2022 (Safety Code for Electrochemical Energy Storage Stations). Local energy bureaus and fire authorities have approval roles. These Chinese standards cover fire suppression system design, spacing, and emergency procedures at the facility level but are not equivalent to Japan's Fire Service Act hazardous-materials designation and permitting system, which operates through a separate legal classification regime.GB/T 51048-2025 — 电化学储能电站设计规范 (Design Code for Electrochemical Energy Storage Power Station; effective April 1, 2026)
GB/T 42288-2022 — 电化学储能电站安全规程 (Safety Code for Electrochemical Energy Storage Stations)		 Japan's Fire Service Act (消防法), administered by the Fire and Disaster Management Agency (FDMA), designates certain hazardous materials and sets requirements for their storage, handling, and facility design. Large-capacity lithium-ion battery storage systems that exceed specified quantity thresholds are classified as 'hazardous materials' (危険物, Class 4 or related classification depending on electrolyte composition). Above these thresholds, storage facilities require fire department approval (危険物施設の設置許可), fire suppression systems, containment structures, and designated safety officers. Building Standards Act requirements also apply to the installation space. Specific threshold values depend on electrolyte type and total quantity — exporters must confirm current FDMA threshold values and classification with a qualified Japanese fire-safety adviser.消防法 (Fire Service Act) — administered by Fire and Disaster Management Agency (FDMA)
危険物の規制に関する政令 (Cabinet Order on Regulation of Hazardous Materials) — sets threshold quantities and facility requirements
建築基準法 (Building Standards Act) — requirements for installation spaces		 Japan's Fire Service Act imposes a separate hazardous-materials permitting regime for large BESS installations that has no direct equivalent in Chinese regulations. Chinese BESS exported to Japan above applicable quantity thresholds will require fire department approval for the installation facility, independent of any product-level certification. GB/T 51048 design compliance does not substitute for Fire Service Act permitting. The applicable threshold values and classification category must be confirmed with FDMA or a qualified Japanese fire-safety adviser as regulatory details are subject to update.[INFORMATIONAL] Chinese BESS installations in Japan above FDMA hazardous-material thresholds require fire department approval under the Fire Service Act, separate from any PSE or Electricity Business Act approvals. Chinese GB facility-design compliance does not substitute. Confirm current threshold values and classification with a qualified Japanese fire-safety adviser before project design. Fire and Disaster Management Agency (FDMA), Japan2026-06-12 · unverified
Electricity Business Act — Technical Standards for Electrical Installations China regulates grid-connected ESS technical requirements through GB/T 36558-2022 (General Technical Requirements for Electrochemical Energy Storage Systems) and grid operator technical specifications. Project approval is obtained through the National Development and Reform Commission (NDRC) and the National Energy Administration (NEA), with grid connection approval granted by the relevant grid operator (State Grid or CSG). The Chinese regulatory pathway (centralized government and grid-operator approval) differs structurally from Japan's Electricity Business Act inspection-based compliance system.GB/T 36558-2022 — 电力系统电化学储能系统通用技术条件 (General technical requirements for electrochemical energy storage systems)
GB/T 36547-2018 — 电化学储能系统接入电网技术规定 (Technical requirements for electrochemical energy storage system connected to power grid)		 Japan's Electricity Business Act (電気事業法), administered by METI, sets mandatory technical standards for electrical installations including self-generating and storage equipment. The Act's subordinate regulations — the Technical Standards for Electrical Equipment (電気設備に関する技術基準, Ministerial Ordinance) — establish safety and operational requirements for electrical installations above a threshold voltage/capacity. BESS used in conjunction with on-site or grid-connected electrical systems must comply with these technical standards. Pre-use self-inspections (使用前自主検査) by the facility owner or a qualified inspector are required for designated installations. METI regional bureaus (産業保安監督部) oversee compliance.電気事業法 (Electricity Business Act) — administered by METI
電気設備に関する技術基準 (Technical Standards for Electrical Equipment) — METI Ministerial Ordinance
電気設備の技術基準の解釈 (Interpretation of Technical Standards for Electrical Installations) — METI technical guidance		 Japan's Electricity Business Act imposes a domestic technical standards compliance and self-inspection obligation that applies to BESS installations regardless of their country of manufacture. Chinese GB/T 36558 technical compliance documentation does not satisfy the Electricity Business Act inspection requirements. The BESS system must comply with Japanese technical standards (電気設備に関する技術基準) and the facility owner must complete mandatory pre-use self-inspections. Compliance must be demonstrated by qualified Japanese electrical engineers.[INFORMATIONAL] Chinese BESS installed in Japan must comply with Japanese Electricity Business Act technical standards and pre-use self-inspection obligations. Chinese GB/T 36558 documentation does not substitute. Engage qualified Japanese electrical engineers and METI regional bureau consultation before installation. Ministry of Economy, Trade and Industry (METI), Japan2026-06-12 · unverified
Grid Interconnection — JEAC 9701 Grid Interconnection Code China's grid interconnection requirements for ESS are set by GB/T 36547-2018 (Technical Requirements for Electrochemical Energy Storage System Connected to Power Grid) and grid operator (State Grid / CSG) enterprise standards. Approval is granted by the relevant grid operator. Chinese grid interconnection standards differ in technical requirements, approval process, and regulatory structure from JEAC 9701 and Japanese utility interconnection agreements.GB/T 36547-2018 — 电化学储能系统接入电网技术规定 (Technical requirements for electrochemical energy storage system connected to power grid) Grid-connected BESS in Japan must comply with the Grid Interconnection Technical Requirements Guidelines (系統連系技術要件ガイドライン, commonly referred to as JEAC 9701), which is published by the Japan Electric Association and referenced by METI. JEAC 9701 sets technical requirements for connecting distributed generation and storage systems to the utility grid, covering protection relay settings, voltage regulation, frequency response, disconnection requirements, and anti-islanding. Formal interconnection approval must be obtained from the local utility (transmission system operator) before commissioning. For large-scale grid-connected storage above certain thresholds, additional METI approval under the Electricity Business Act may be required.JEAC 9701 — 系統連系技術要件ガイドライン (Grid Interconnection Technical Requirements Guidelines), Japan Electric Association
電気事業法 (Electricity Business Act) — large-scale generation/storage approval by METI		 Chinese BESS exported to Japan for grid-connected applications must comply with JEAC 9701 technical requirements and obtain formal interconnection approval from the Japanese local utility before commissioning. GB/T 36547 compliance documentation does not substitute for JEAC 9701 compliance or Japanese utility interconnection approval. System protection relay settings, anti-islanding functions, and frequency/voltage response parameters must be configured to Japanese grid standards, which differ from Chinese grid parameters.[INFORMATIONAL] Grid-connected Chinese BESS in Japan must comply with JEAC 9701 and obtain utility interconnection approval. Chinese GB/T 36547 documentation does not substitute. System configuration (protection relay settings, anti-islanding, grid parameters) must be adapted to Japanese standards. Engage the local Japanese utility early in project development. Ministry of Economy, Trade and Industry (METI), Japan2026-06-12 · unverified
Customs Classification and Import Tariffs (HS Code) Chinese BESS exporters use China's customs export classification (HS codes) for export declarations. The HS code system is harmonised internationally at the 6-digit level; however, national subheadings (8-digit) and duty treatment differ between China and Japan. Exporters should verify that the Chinese export HS code maps correctly to the corresponding Japanese import HS code and confirm applicable import duty rates with Japan Customs.中华人民共和国进出口税则 (China Customs Import and Export Tariff Schedule) — Chinese HS codes and export classification BESS products imported into Japan must be classified under the correct Harmonized System (HS) tariff code by Japan Customs (税関). Battery energy storage systems and their components may fall under HS 8507 (electric accumulators, including separators), HS 8504 (electrical transformers, power converters), or other headings depending on the specific product configuration. Incorrect HS classification can result in customs delays, reassessment of duties, or compliance issues. Japan Customs publishes the Japan Customs Tariff Schedule and provides advance classification rulings (事前教示制度) for importers seeking certainty. As of mid-2026, Japan's import duty on lithium-ion batteries under HS 8507.60 is subject to Japan's standard MFN tariff schedule; verify current rates with Japan Customs as rates may change.関税定率法 (Customs Tariff Act), Japan — sets import tariff rates and classification
Japan Customs Tariff Schedule (実行関税率表) — HS codes and duty rates
事前教示制度 (Advance Classification Ruling System) — Japan Customs		 While HS codes are internationally harmonised at the 6-digit level, the correct 8-digit Japanese import HS classification for BESS systems (which may include batteries, inverters, BMS, and enclosures as a combined system) requires careful determination. Incorrect classification affects import duty calculation and may trigger customs examination. Chinese exporters should seek an advance classification ruling (事前教示) from Japan Customs for complex BESS configurations. Current Japan-China MFN tariff rates on battery products must be verified at shipment time as they may be subject to change.[INFORMATIONAL] Chinese BESS exporters must verify the correct Japanese import HS classification for their specific product configuration and confirm applicable import duty rates with Japan Customs before shipment. An advance classification ruling (事前教示) is recommended for complex or novel BESS configurations. Incorrect classification may result in duty reassessment and customs delays. Japan Customs (税関), Ministry of Finance, Japan2026-06-12 · unverified
Labelling — Japanese Language Requirement and JIS Mark Chinese product labelling for domestic market typically uses Simplified Chinese and complies with relevant GB standards and product-specific regulations. For export to Japan, Chinese manufacturers must prepare separate Japanese-language labelling, technical documentation, operation manuals, and SDS. There is no mutual labelling recognition between China and Japan; Japanese-language documentation must be prepared specifically for the Japanese market.GB/T 36276-2023 — includes labelling requirements for domestic CN stationary storage batteries
中国强制性产品认证 (CCC) — label requirements for CCC-certified products		 Products sold in Japan are generally expected to carry Japanese-language labelling covering product name, specifications, manufacturer or importer name and contact address, safety warnings, and handling instructions. While a single comprehensive Japanese labelling law for all industrial equipment does not exist, consumer protection regulations, DENAN (for designated electrical appliances), and sector-specific regulations impose Japanese-language requirements. Industrial BESS sold to corporate customers typically require Japanese-language operation manuals, safety data sheets (SDS in Japanese), installation manuals, and technical documentation as a commercial and safety requirement. The JIS mark (JISマーク) is a voluntary conformity mark indicating compliance with specific JIS standards; it is not legally mandatory for most BESS products but is commercially valued as a quality signal in the Japanese market.電気用品安全法 (DENAN) — Japanese-language labelling required for designated electrical appliances
工業標準化法 (Industrial Standardization Act) — basis for JIS mark (voluntary conformity)
化学物質等安全データシート (SDS) — required in Japanese for hazardous substances under the Industrial Safety and Health Act		 Chinese BESS exporters must prepare complete Japanese-language labelling, operation manuals, installation manuals, and SDS (in Japanese) for Japan market entry. Chinese-language documentation does not satisfy Japanese commercial or regulatory requirements. DENAN-designated products require Japanese-language labelling as a legal requirement. JIS mark certification, while voluntary, is commercially valuable and may be expected by Japanese project developers and utilities.[INFORMATIONAL] Chinese BESS exporters must provide complete Japanese-language labelling, operation manuals, installation guides, and SDS for Japan market entry. Chinese-language documentation does not substitute. JIS mark voluntary certification is commercially beneficial. Confirm DENAN labelling requirements with METI or a qualified adviser for the specific product category. Japanese Industrial Standards Committee (JISC), Ministry of Economy, Trade and Industry2026-06-12 · unverified
PSE / DENAN Safety Certification — Scope Uncertainty for Stationary BESS [UNCERTAIN] China requires lithium-based stationary storage batteries to comply with GB 36276-2023 (Safety Requirements for Lithium-Ion Battery for Electrical Energy Storage) at the cell/module level and GB/T 36558-2022 for grid-connected ESS general technical requirements. Certification is conducted by CQC or other CNAS-accredited laboratories. GB test reports and certificates are not recognised as substitutes for PSE certification under DENAN, and JIS C 8715-2 is a separate Japanese standard not bridged to GB 36276.GB 36276-2023 — 电力储能用锂离子蓄电池 (Safety requirements for lithium-ion battery for electrical energy storage)
GB/T 36558-2022 — 电力系统电化学储能系统通用技术条件 (General technical requirements for electrochemical energy storage systems)		 [UNCERTAIN — verify with METI before relying on this row] Japan's Electrical Appliance and Material Safety Act (電気用品安全法, DENAN), administered by METI, requires a PSE mark for 'designated electrical appliances and materials' listed in the Act's Appended Tables. As of mid-2026, the PSE mark requirement applies clearly to individual lithium-ion battery cells and certain battery packs when sold as consumer or industrial products. However, whether a complete stationary BESS system (e.g., a containerised grid-scale storage unit) falls within DENAN's designated product scope is UNCERTAIN — large integrated systems may instead be regulated primarily under the Electricity Business Act and Fire Service Act rather than DENAN. JIS C 8715-2 covers secondary lithium cells and batteries for industrial stationary use. JET (Japan Electrical Safety & Environment Technology Laboratories) provides voluntary third-party certification that is commercially expected for many electrical products. Exporters MUST confirm current DENAN designated-product scope with METI or a qualified Japanese legal adviser before relying on this analysis.電気用品安全法 (Electrical Appliance and Material Safety Act, DENAN) — administered by METI
JIS C 8715-2 — Safety requirements for secondary lithium cells and batteries for use in industrial applications (stationary)
JET (Japan Electrical Safety & Environment Technology Laboratories) voluntary certification		 The primary gap is scope uncertainty: Chinese exporters must first determine whether their specific BESS product falls within DENAN's designated product list before identifying the correct compliance pathway. If individual battery cells or modules require PSE marking, they must be tested to JIS C 8715-2 or applicable JIS/IEC standards by a METI-registered third-party inspection body; GB 36276 certificates are not accepted as equivalent. If the complete system is outside DENAN scope, compliance shifts to the Electricity Business Act and Fire Service Act (see other rows). JET voluntary certification is commercially expected even where not legally mandatory. No bilateral recognition agreement exists between Japan and China for DENAN/PSE scope.[INFORMATIONAL — UNCERTAIN] Chinese BESS exporters must first confirm whether their product falls within DENAN's designated product scope. If battery cells or modules are in scope, PSE certification via a METI-registered body is required; GB 36276 certificates do not substitute. JET voluntary certification is commercially expected. For complete BESS systems, the applicable regulatory framework (DENAN vs. Electricity Business Act vs. Fire Service Act) must be confirmed with a qualified Japanese legal adviser before export. Ministry of Economy, Trade and Industry (METI), Japan2026-06-12 · unverified
Battery Cell / Module Safety Standard — JIS C 8715-2 (Industrial Stationary) GB 36276-2023 (Safety Requirements for Lithium-Ion Battery for Electrical Energy Storage) is the primary Chinese cell/module safety standard for stationary storage batteries. GB 36276 and JIS C 8715-2 cover broadly similar safety objectives (overcharge, overdischarge, short circuit, thermal, mechanical) but are separate national standards with different test conditions, pass/fail criteria, and documentation requirements. GB 36276 test data is not accepted as equivalent to JIS C 8715-2 compliance by Japanese certification bodies.GB 36276-2023 — 电力储能用锂离子蓄电池 (Safety requirements for lithium-ion battery for electrical energy storage) JIS C 8715-2 (Safety requirements for secondary lithium cells and batteries for use in industrial applications — stationary) sets out safety test requirements for lithium secondary cells and batteries used in stationary industrial energy storage applications in Japan. It is the primary Japanese cell/module safety standard for BESS components. Compliance may be required under DENAN for battery components that appear on the designated-product list, and is expected by Japanese customers and certification bodies (including JET) for industrial stationary storage products.JIS C 8715-2 — Safety requirements for secondary lithium cells and batteries for use in industrial applications (stationary)
電気用品安全法 (DENAN) — designated product list scope (verify with METI)		 Chinese BESS exporters holding GB 36276-2023 cell/module safety certificates must additionally test to JIS C 8715-2 (or IEC 62619 as a bridge standard, if accepted by the Japanese certification body) for Japan market acceptance. No delta-evaluation or mutual-recognition pathway between GB 36276 and JIS C 8715-2 is confirmed as of mid-2026. JET certification against JIS C 8715-2 is commercially expected even where not legally mandatory under DENAN.[INFORMATIONAL] Chinese BESS cells and modules certified to GB 36276-2023 must undergo separate testing to JIS C 8715-2 (or IEC 62619 if accepted) for Japan market access. GB 36276 certificates do not substitute for JIS C 8715-2 compliance. Obtain JET voluntary certification to strengthen market acceptance. Confirm DENAN designated-product scope with METI or a qualified adviser. Japanese Industrial Standards Committee (JISC), Ministry of Economy, Trade and Industry2026-06-12 · unverified
Lithium Battery Transport — UN 38.3 and International Dangerous Goods Rules China requires UN 38.3 testing for lithium batteries exported internationally, consistent with international requirements. Chinese exporters shipping to Japan must obtain UN 38.3 test reports from accredited testing laboratories, prepare the required Safety Data Sheet (SDS), and comply with IATA DGR (air) or IMDG Code (sea) packaging, labelling, and declaration requirements. UN 38.3 is the same international standard on both sides; the gap is in ensuring complete, current test documentation and correct dangerous-goods declaration for each specific battery configuration shipped.UN 38.3 — 联合国试验和标准手册第38.3节 (same international standard)
GB/T 31485-2015 — 电动汽车用动力蓄电池安全要求及试验方法 (reference; not a transport standard)		 Lithium-ion batteries transported to Japan by air or sea must comply with international dangerous goods transport regulations. UN 38.3 (UN Manual of Tests and Criteria, Section 38.3) testing is mandatory for lithium batteries transported internationally, verifying safety under altitude simulation, thermal, vibration, shock, external short circuit, impact, overcharge, and forced discharge conditions. For air transport, IATA Dangerous Goods Regulations (DGR) apply; for sea transport, IMDG Code (International Maritime Dangerous Goods Code) applies. Japan's Civil Aeronautics Act and Maritime Act incorporate these international standards. Large-capacity BESS modules shipped in bulk must be classified and declared as dangerous goods under appropriate UN numbers (UN 3480 for lithium-ion batteries shipped alone, UN 3481 for batteries in or with equipment).UN 38.3 — United Nations Manual of Tests and Criteria, Section 38.3 (Lithium Battery Transport Testing)
IATA DGR — International Air Transport Association Dangerous Goods Regulations (air transport)
IMDG Code — International Maritime Dangerous Goods Code (sea transport)
航空法 (Civil Aeronautics Act), Japan — incorporates IATA DGR
海事法 / 船舶安全法 (Maritime Safety Act), Japan — incorporates IMDG Code		 UN 38.3 is the same international standard on both sides; however, Chinese BESS exporters must ensure they hold valid, battery-configuration-specific UN 38.3 test reports from an accredited laboratory for each product variant being shipped. Reports must cover the exact cell chemistry, capacity, and configuration (cell, module, pack) being transported. Large BESS modules may have mass and capacity limitations under IATA DGR that require special approvals for air shipment. Sea shipment under IMDG Code is more commonly used for large modules. Correct UN number assignment, SDS preparation, and dangerous-goods packaging must be verified for each shipment.[INFORMATIONAL] UN 38.3 transport testing is required for all lithium battery shipments to Japan. Chinese exporters must hold valid, battery-configuration-specific UN 38.3 test reports and comply with IATA DGR (air) or IMDG Code (sea) for each shipment. This is the same international standard applied on both sides; the practical gap is documentation currency and correct dangerous-goods declaration per shipment. Ministry of Land, Infrastructure, Transport and Tourism (MLIT), Japan2026-06-12 · unverified

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