In this paper, I discuss the compatibility of heterodox and ecological economics. Taking critical realism as a unifying ontology for heterodox economics, I argue that there is a radical dissonance between ontological presuppositions of ecological economics and heterodox traditions that adopt critical realist’s perspective. The dissonance lies in the need of ecologically oriented economic schools to state strict causal regularities in socio-economic realm, given the environmental intuitions about the nature of economy and the role of materiality and non-human agency in persistence of economic systems. The paper uses conceptual apparatus derived from Andrew Brown’s critique of critical realism and Bruno Latour’s Actor-network-theory.