Energieklasse	Nominativ, Singular	nominative case, singular
	Energieklasse	Genitiv, Singular	genitive case, singular
	Energieklasse	Dativ, Singular	dative case, singular
	Energieklasse	Akkusativ, Singular	accusative case, singular
	Energieklassen	Nominativ, Plural	nominative case, plural
	Energieklassen	Genitiv, Plural	genitive case, plural
	Energieklassen	Dativ, Plural	dative case, plural
	Energieklassen	Akkusativ, Plural	accusative case, plural