The Arizona Registrar of Contractors does not have any specific solar license, but considers this to fall under the C11/L11 general electrical license. There is a special solar only domestic hot water license. However, It is possible to get a special negotiated "SOLAR ELECTRIC INSTALLATIONS ONLY" license, C05, that has reduced technical testing (and all the normal general contracting law testing). Such a license allows installation of all of the PV system and connection to the nearest appropriate electrical panel. A minimal bond is required. I some ways it is better than a straight electrical license. For instance, one can subcontract required trades for an installation such as landscaping that technically speaking, an electrician can not do unless he/she also has a general contracting license.