For years, the conflict between the Mapuche people and energy developers has persisted in Chile’s southern Biobío Region. Chile’s future as a leader in renewable development hangs on the drafting of a new law, and workable solutions are needed now more than ever. The voters decisively rejected Chile’s latest constitutional draft, which afforded Indigenous people in Chile unprecedented recognition at the price of a new governmental structure. In the midst of these political developments, Chile is shifting to develop more renewable energy. This shift will require the use of Mapuche ancestral lands and waterways, likely causing increased tensions between the Chilean government, renewable energy developers, and the Mapuche. This paper assesses the just transition approach in Chile alongside the drafting of a new constitution for the country, with particular consideration for restorative and recognition justice. We provide a comprehensive summary of Mapuche’s historic and current claims to the ancestral lands in Chile and their resistance to hydroelectric power development projects along the Biobío River. Then, we review Chilean laws and court cases dealing with hydroelectric power development projects to pinpoint energy injustice. Finally, we use the energy justice framework to propose new energy laws for Chile that will encourage needed collaboration between the Chilean government, renewable energy developers, and the Mapuche.