In addition to Non-conjunctive specification and Non-disjunctive specification, a powers-based account of determination neatly accommodates most standard features of determination. Causal compatibility is accommodated, since every power of a determinable instance is token-identical with a power of an associated determinate. A powers-based account also satisfies Asymmetry, Irreflexivity, and Transitivity, which are inherited as features of the proper subset relation between powers. Determinable i