North Dakota is split across two wholesale grid operators. Eastern North Dakota, served by Xcel Energy, Otter Tail Power, and Montana-Dakota Utilities, sits inside MISO; western North Dakota, fed largely through Basin Electric Power Cooperative and the rural electric cooperatives, falls under SPP. The available fault current at a facility service is set by the serving utility, and in the Bakken oil and gas country it can shift quickly as new pads, gas processing, and gathering systems come online, which is why short-circuit and arc flash studies should be revisited after utility-side work.
North Dakota has no OSHA-approved state plan, so employers in the state answer to federal OSHA. Federal OSHA enforces electrical safety through 29 CFR 1910 Subpart S, which treats NFPA 70E as the consensus standard for arc flash risk assessment and equipment labeling. A current, PE-sealed arc flash study is the documentation a federal OSHA inspector or an insurance auditor expects to see.
The authority having jurisdiction for the installation itself is typically the local or county electrical inspection office enforcing the National Electrical Code as adopted in North Dakota. Every study True Power Systems delivers in the state is modeled to current IEEE and NFPA methodology and sealed by a Professional Engineer licensed in North Dakota.