As Europe accelerates its transition to renewable energy, commercial and industrial (C&I) energy storage systems play a vital role in supporting grid stability, optimizing energy use, and enabling the integration of solar and wind power. But entering the EU market requires more than just advanced technology — it demands regulatory compliance.
If you are manufacturing, installing, or selling C&I energy storage solutions in the European Union, you must meet strict safety, grid compliance, and environmental standards. Here’s a clear and updated guide to help you understand what certifications and regulations apply to energy storage systems in the EU.
1. CE Marking: Your Entry Pass to the European Market
CE marking is mandatory for most electrical products sold in the European Economic Area (EEA). It proves your energy storage system meets essential EU requirements.
Key EU Directives for C&I energy storage:
- Low Voltage Directive (2014/35/EU) – Ensures electrical safety within specified voltage limits.
- EMC Directive (2014/30/EU) – Controls electromagnetic interference with other devices.
- RoHS Directive (2011/65/EU) – Limits the use of hazardous substances in electrical and electronic equipment.
- Machinery Directive (2006/42/EC) – May apply to systems with integrated mechanical parts.
Note: While manufacturers are responsible for CE self-declaration, working with a third-party lab to test for compliance with harmonized standards is highly recommended.
2. IEC Standards: Internationally Accepted Safety & Performance Benchmarks
Though not EU-specific, IEC standards are recognized across Europe and widely used in CE conformity assessments.
Key IEC standards for energy storage systems:
- IEC 62619 – Safety of lithium-ion batteries in industrial applications.
- IEC 62933-5-1 – Safety for grid-connected energy storage systems.
- IEC 61000 series – EMC requirements for power systems.
- IEC 62477-1 – Safety for power electronic converters.
3. EN Standards: The Harmonized European Norms
EN standards are European harmonized standards often adopted from IEC guidelines and form the basis for CE marking in the EU.
Important examples include:
- EN 50549-10 – Requirements for storage systems connected to low-voltage distribution networks.
- EN 62109 – Safety for power converters used in renewable energy systems.
- EN 50110 – Operation of electrical installations, relevant to system installers.
4. Grid Compliance: National Rules You Must Follow
In addition to EU-wide directives, each country has its own grid connection standards. You must comply with local grid codes to gain connection approval.
Country-specific examples:
- Germany:
- VDE-AR-N 4105 – For low-voltage systems.
- VDE-AR-N 4110 – For medium-voltage systems.
- Italy:
- CEI 0-21 and CEI 0-16 for different voltage levels.
- France:
- Grid connection governed by Enedis (distribution) and RTE (transmission).
Always consult local DSOs or TSOs before installation to ensure your system is compliant.
5. Fire Safety and Installation Regulations
Fire safety is a top priority for commercial and industrial battery storage projects in Europe.
Relevant standards include:
- EN 13501 – Fire classification of building materials and construction products.
- EN ISO 13849 / ISO 21904 – Functional safety for battery management systems (BMS).
- NFPA 855 – A US standard increasingly referenced in Europe, especially for large-scale battery installations.
Local fire departments may impose extra requirements for spacing, ventilation, and emergency access.
6. Environmental Compliance: Recycling & Sustainability
Sustainability is a core value of the European market. Your battery systems must comply with strict environmental regulations.
Key regulations include:
- WEEE Directive (2012/19/EU) – Covers disposal and recycling of electrical and electronic equipment.
- EU Battery Regulation (EU 2023/1542) – Replaces the old Battery Directive with new requirements for:
- Carbon footprint declarations
- Recycled material content
- Supply chain due diligence
Manufacturers must register with national WEEE schemes and ensure proper recycling at end-of-life.
7. Certification Bodies and Testing Labs
To improve market credibility and streamline product approval, many companies choose to partner with notified bodies and accredited testing labs.
Trusted names in the EU include:
- TÃœV Rheinland
- TÃœV SÃœD
- DEKRA
- Intertek
- UL (Europe)
- Bureau Veritas
Working with certified partners strengthens trust with installers, utilities, and end users.
Final Takeaway
Entering the European market for commercial and industrial energy storage is not just about compliance — it’s about building long-term trust and reliability. By aligning with EU certification standards, you ensure your product is safe, high-performing, and ready for grid integration.
Investing early in CE certification, IEC/EN standards, and local grid code compliance will help you avoid costly delays, build stronger customer confidence, and succeed in one of the world’s most progressive energy markets.
