This document discusses green energy and decoupling economic growth from energy consumption and carbon emissions. It finds that historically economic growth has correlated with increased energy use. Decoupling aims to continue economic development without a corresponding rise in environmental impact. The limits and challenges of decarbonization include the high costs of technologies like carbon capture and storage, nuclear power, and ensuring a just transition that does not negatively impact industries and workers. Overall decoupling economic growth from energy use and decarbonizing will be difficult but necessary for environmental sustainability.