Standards for Grid-Scale Battery Energy Storage Systems (BESS)

Grid-scale Battery Energy Storage Systems (BESS) shall be designed, manufactured, and tested in accordance with the following International Electrotechnical Commission (IEC) standards:

• IEC 62933-2-1:2017
  Electrical Energy Storage (EES) Systems – Part 2-1: Unit parameters and testing methods – General specification
• IEC TS 62933-2-2:2022
  Electrical Energy Storage (EES) Systems – Part 2-2: Unit parameters and testing methods – Application and performance testing
• IEC TS 62933-3-1:2018
  Electrical Energy Storage (EES) Systems – Part 3-1: Planning and performance assessment – General specification
• IEC TS 62933-4-1:2017
  Electrical Energy Storage (EES) Systems – Part 4-1: Guidance on environmental issues – General specification
• IEC 62933-5-1:2024
  Electrical Energy Storage (EES) Systems – Part 5-1: Safety considerations for grid-integrated systems – General specification
• IEC 62933-5-2:2020
  Electrical Energy Storage (EES) Systems – Part 5-2: Safety considerations for grid-integrated systems – Electrochemical-based systems