The energy transition has been promoted as a key strategy to address the climate crisis and foster sustainable development. However, a critical discussion of the unequal distribution of costs and benefits is often missing, especially in marginalised regions. In this article, we analyse the case of Sardinia, where the extractive and speculative logics of the transition reproduce colonial dynamics. Through the Tyrrhenian Link project and the response of an anticolonial territorial movement, we highlight the risk of transforming the island into a sacrifice zone for external interests. Grounded in a feminist and anticolonial perspective, we propose a transcalar analysis connecting European Green Deal policies to local experiences of mobilisation in those territories facing struggles.