Oklahoma does not have specialized licensing requirements for photovoltaic or solar thermal systems.
All contractors must possess their state electrician license. Electrical contractors, journeyman electricians, and apprentices must be licensed by the Department of Health. Examinations are conducted by the State Board of Examiners.
Installations must conform to the 2008 National Electrical Code, as a minimum standard.
Alaska, Arkansas, Colorado, Minnesota, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, South Dakota, Utah, Washington, and Wyoming.