This report is an early excerpt of the forthcoming Energy Technology Perspectives 2012. It provides a comprehensive tracking of progress in the development and deployment of clean energy and energy efficiency technologies in the power generation, industry, buildings, and transport sectors. Progress is compared against rates required to achieve a 2oC limit in global temperature rise. Three main areas evaluated are: (1) Technology progress; (2) Market creation; (3) Technology penetration. The report finds that while some progress has been made, most clean energy technologies are not on track to make their required contribution to reducing Co2 emissions and thereby provide a more secure energy system. It highlights that getting back on track is possible, if timely and significant policy action is taken.