A majority of clean energy advocates believe that the world has all the low-carbon technologies it needs to address climate change; what we lack is the political will to mandate and subsidize their deployment. To support this view advocates of this “Clean Energy Deployment Consensus” point to a number of studies assessing the technical readiness of clean energy technologies. Unfortunately, as ITIF shows in its new report Challenging the Clean Energy Deployment Consensus these reports often gloss over major challenges facing clean energy, including significantly higher costs, sub-optimal performance, and challenges in grid integration and storage. In addition many advocates miss the critical message of the need for innovation inherent in the literature. Without a comprehensive and aggressive innovation strategy clean energy will not be cheap enough and good enough to be adopted voluntarily around the planet.