Climate-induced drought jeopardizes future access to sufficient energy sources for many people reliant on firewood, especially those underrepresented in forest management decision-making. To identify where interventions might be most effective in facilitating self-determination and sustained firewood harvest, we investigate the case of Diné firewood harvesters. Using data from surveys, interviews and participant observations, we articulate who uses firewood and why, what the costs of firewood are, and who imposes those costs. Reducing both the cost and need for firewood for the Diné and others would support energy sovereignty by facilitating sustained access to firewood.