NFPA 70
National Electrical Code
Also written as NEC, National Electrical Code
- Issuing body
- National Fire Protection Association
- Current edition
- 2026
- Published
- 2025
- Last verified
- 2026-08-06
Edition and revision cycle confirmed. Sources disagree on the precise 2026 publication and effective dates, so no exact day is stated here.
What it covers
The US electrical installation code. Article 706 is the part written specifically for energy storage systems, addressing disconnection, overcurrent protection, working clearances and the marking a storage installation must carry. Other articles reach storage projects through the wiring, grounding and equipment provisions that apply to any installation.
Editions
- 2026 In force 2025
Article 706, which covers energy storage systems, was revised again in this cycle alongside related provisions for disconnection and working space.
- 2023 Superseded
- 2020 Superseded
Next edition & pipeline
Official source
learnBESS doesn't host or reproduce standards. Read or purchase the document from the issuing body.
View NFPA 70 at National Fire Protection Association ↗