The “models” of power heterodox economists have offered remain inadequate. Either they have not been carefully enough specified to satisfy the requirements of skeptical mainstream economists or else they have not been comprehensive enough to encompass the important attributes of power with which economists ought to be concerned. This article is an attempt to correct some of these problems by outlining a model of power that is both comprehensive and applicable to the concerns of economists. The model will be used to illustrate, by means of a broad sketch, some of the major power structures extant in market economies.