| Section 631-01: Electrical energy storage systems classification |
| 631-01-01 | electrical energy storage | |
| 631-01-02 | electrical energy storage system | |
| 631-01-03 | battery energy storage system | |
| 631-01-04 | utility grid | |
| 631-01-05 | utility EESS | |
| 631-01-06 | long-duration application | |
| 631-01-07 | short-duration application | |
| 631-01-08 | hybrid and emergency application | |
| Section 631-02: Electrical energy storage systems specification |
| 631-02-01 | duty cycle, <of an EES system> | |
| 631-02-02 | charging/discharging cycle | |
| 631-02-03 | continuous operating conditions, pl | |
| 631-02-04 | point of connection, <of an EES system> | |
| 631-02-05 | primary POC | |
| 631-02-06 | nominal apparent power, <of an EES system> | |
| 631-02-07 | nominal energy capacity, <of an EES system> | |
| 631-02-08 | power capability chart | |
| 631-02-09 | auxiliary POC | |
| 631-02-10 | reference environmental conditions, pl | |
| 631-02-11 | service life, <of an EES system> | |
| 631-02-12 | permitted depth of charge | |
| 631-02-13 | permitted depth of discharge | |
| 631-02-14 | nominal charging duration | |
| 631-02-15 | nominal discharging duration | |
| 631-02-16 | energy efficiency, <of an EES system> | |
| Section 631-03: Electrical energy storage systems planning and installation |
| 631-03-01 | EESS module | |
| 631-03-02 | primary subsystem | |
| 631-03-03 | auxiliary subsystem | |
| 631-03-04 | control subsystem | |
| Section 631-04: Electrical energy storage systems operation |
| 631-04-01 | operating state, <of an EES system> | |
| 631-04-02 | operation signals, pl | |
| 631-04-03 | operating procedure | |
| 631-04-04 | operating mode, <of an EES system> | |
| Section 631-05: Electrical energy storage systems safety and environmental issues |
| 631-05-01 | environmental issue, <of an EES system> | |
| 631-05-02 | safety | |