This dissertation examines the cultural politics of energy development on the Navajo (Dine) Nation in the Southwestern United States (Arizona and New Mexico) through an ethnographic study of Desert Rock, a coal-fired power plant proposed by the Navajo Nation government. Since its initial proposal in 2003, the proposed plant has spawned widespread controversy both among tribal members and in the greater region, despite its unbuilt, emergent status. This dissertation follows the actors engaged in this debate, showing how Desert Rock became a fulcrum for urgent negotiations of Navajo identity and indigeneity, sustainable development, tribal sovereignty, and expert knowledge. I argue that these dynamics constitute landscapes of power, where Navajo people understand their region in large part through the political history of energy mineralsï¼› negotiate difference (ethnic, gender, and epistemic) through engagements with infrastructure and ecologyï¼› create a space for cultural artifacts that envision the effects of energy development on Navajo lands and bodiesï¼› contest and articulate particular meanings of sovereigntyï¼› mobilize expertise and new practices of knowledge productionï¼› and finally, forge new ethical subject positions vis-a-vis debates over technology and the environment. Showing how legacies of extraction on the Navajo Nation are both material and epistemological, the dissertation puts the politics of energy into conversation with the politics of knowledge production, especially as these bear on contemporary anthropological practice. I draw on three types of qualitative data: (1) interviews with a diverse range of people invested in the Navajo Nation’s energy development outcomesï¼› (2) participant observation in energy-related events and collaboration with members of a Navajo environmental organizationï¼› and (3) discourse analysis of newspaper articles, grassroots research reports, tribal government reports, and public hearings. This dissertation contributes to the interdisciplinary fields of political ecology, science and technology studies, critical indigenous studies, and nascent work in the anthropology of energy, illuminating how a particular conflict over natural resource management and energy infrastructure galvanized diverse modes of knowledge, energy activism, and identifications with environmentalism. Effectively, the contested technology generated an enduring legacy for the future of energy policy and activism on the Navajo Nation and greater Southwestern region.