This article explores the climate policy implications of the arguments made in "Understanding carbon lock-in" (Unruh, 2000), which posited that industrial countries have become locked-into fossil fuel-based energy systems through path dependent processes driven by increasing returns to scale, Carbon lock-in arises through technological, organizational, social and institutional co-evolution, "culminating" in what was termed as techno-institutional complex (TIC). In order to resolve the climate problem, an escape from the lock-in condition is required. However, due to the self-referential nature of TIC, escape conditions are unlikely to be generated internally and it is argued here that exogenous forces are probably required.