Designed to meet:
ESS Safety & Certification
• UL 9540 – Energy Storage Systems and Equipment
• UL 1973 – Batteries for Use in Stationary Applications
• UL 9540A – Thermal Runaway and Fire Propagation Testing
• UL 1741 – Inverters, Converters, Controllers and Interconnection System Equipment
Solar PV
• UL 61730-1 / UL 61730-2 – PV Module Safety
• IEC 61215 – PV Module Design Qualification and Type Approval
• NEC Article 690 – Solar Photovoltaic Systems
Grid Interconnection
• IEEE 1547-2018
• IEEE 1547a-2020
• IEEE 1547.1-2020
• IEEE 519, where applicable
Installation & Fire Protection
• NFPA 855 – 2026 Edition
• NFPA 70 / NEC Article 706 – Energy Storage Systems
• NFPA 70 / NEC Article 690 – Solar PV Systems
• Applicable International Fire Code (IFC)
• Applicable International Building Code (IBC)
Medium-Voltage Infrastructure
• Applicable IEEE C57 transformer standards
• Applicable ANSI/IEEE/UL standards for MV switchgear, protection and interconnection equipment
Controls, Communications & Cybersecurity
• Intelligent EMS / Plant Controller
• BMS and PCS coordinated control
• DNP3 / Modbus TCP/IP / IEC 61850, as required
• UL 2941 / IEC 62443 cybersecurity principles, where applicable

Standard Josh Energy Configurations

JE Solar 1
1 MWp PV + 1 MW / 5 MWh BESS

JE Solar 2
2 MWp PV + 2 MW / 10 MWh BESS

JE Solar 5
5 MWp PV + 5 MW / 20 MWh BESS

JE Solar 10
10 MWp PV + 10 MW / 40 MWh BESS