Fuel rating means:
(1) For non-liquid alternative vehicle fuels (other than electricity), including, but not limited to, compressed natural gas and hydrogen gas, the commonly used name of the fuel with a disclosure of the amount, expressed as a minimum molecular percentage, of the principal component of the fuel. A disclosure of other components, expressed as a minimum molecular percentage, may be included, if desired.
(2) For electric vehicle fuel dispensing systems, a common identifier (such as, but not limited to, “electricity,” “electric charging system,” “electric charging station”) with a disclosure of the system's kilowatt (“kW”) capacity, voltage, whether the voltage is alternating current (“ac”) or direct current (“dc”), amperage, and whether the system is conductive or inductive.
16 CFR § 309.1
As used in subparts B and C of this part: