Tracking Clean Energy Progress is an early except of the forthcoming Energy Technology Perspectives 2012 (ETP2012). The report tracks progress in the development and deployment of clean energy and energy efficiency technologies in the power generation, industry, buildings, and transport sectors. Progress is assessed against rates required to achieve a 2oC limit in global temperature rise (referred to as the "2 degree scenario" or "2DS"). 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 carbon dioxide (CO2) emissions and thereby provide a more secure energy system. It also highlights that getting back on track is possible, if timely and significant policy action is taken.