In Canada and Australia, the renewable energy transition has resulted in the adoption and consolidation of decentralized approaches involving various actors and locations. In this context, the relationships among energy actors are evolving, raising important questions related to coordination, communication, and regulation, particularly in systems that involve Indigenous peoples with traditional and/or treaty rights. While extensive research has focused on energy decentralization, much of it has been centred on community-led, place-based, or collaborative initiatives, often overlooking the issue of Indigenous sovereignty. In this chapter, we introduce a new governance model called the Multi-Territorial Governance (MTG) model, aimed at respecting the self-determination aspirations of Indigenous peoples in the Canadian and Australian energy transitions. The chapter provides guidance for the development of the MTG model and presents arguments for why energy transition actors may benefit from this model’s insights. The construction of the MTG model is informed by two key documents: the Atikamekw Declaration of Sovereignty in Canada and the Garawa Land and Sea Country Plan in Australia. The analysis centers on how the governance structures of Canadian and Australian energy transitions align with or diverge from the claims in these documents. Recognizing the importance of relational networks in governance systems, this work also draws on theories of international relations, Indigenous relationalism, and entangled territorialities to identify solutions that may improve Indigenous participation in the Canadian and Australian energy transitions. The MTG model emerging from this analysis is based on four principles: fostering non-hierarchical relationships, acknowledging territorial scale, promoting national identity, and facilitating strong reciprocal connections.