An overview of the relevant codes and standards governing the safe deployment of utility-scale battery energy storage systems in the United States. NFPA 70E ®, Standard for Electrical Safety in the Workplace®, Chapter 3 covers special electrical equipment in the workplace and modifies the general requirements of Chapter 1. The chapter covers the additional safety-related work practices necessary to practically safeguard employees against the. Batteries of the unsealed type shall be located in enclosures with outside vents or in well ventilated rooms and shall be arranged so as to prevent the escape of fumes, gases, or electrolyte spray into other areas. Understanding the reasons behind these rules helps reinforce their importance. During normal operations, off gassing of the batteries is relatively small. However, the concern is elevated during times of heavy recharge or the batteries, which occur immediately following a rapid and deep. The 2022 Building Energy Efficiency Standards (Energy Code) has battery storage system requirements for newly constructed nonresidential buildings that require a solar photovoltaic (solar PV) system (2022 Nonresidential Solar PV Fact Sheet).
