The Clean Power Plan (CPP) is not an organization but a landmark policy initiative introduced by the U.S. Environmental Protection Agency (EPA) under the Obama administration. It was designed to reduce greenhouse gas emissions from power plants, a major contributor to climate change. ## History and Purpose The Clean Power Plan was first proposed in 2014 and finalized in 2015. It aimed to decrease carbon dioxide emissions from power plants by 32% by 2030 compared to 2005 levels[1][3]. The plan utilized Section 111(d) of the Clean Air Act to set emissions standards for existing power plants, focusing on coal-fired and natural gas-fired units[1][2]. ## Key Achievements Despite never being implemented due to legal challenges, the plan's emissions reduction goal was met 11 years early in 2019. This was largely due to market trends favoring renewable energy and natural gas over coal[3]. The plan also encouraged states to develop innovative strategies for reducing emissions, such as improving plant efficiency, expanding natural gas use, and increasing renewable energy production[1][3]. ## Current Status The Clean Power Plan was blocked by the Supreme Court in 2016, pending further legal review, and was eventually repealed by the Trump administration in 2019. It was replaced by the Affordable Clean Energy Rule, which was later struck down by the courts[6]. ## Notable Aspects The Clean Power Plan was notable for its flexible approach, allowing states to choose how to meet emissions targets. It also highlighted the importance of energy efficiency and renewable energy in reducing carbon emissions[4]. The plan's emphasis on state-level action and coordination with regional energy systems was seen as a model for future environmental policies[2]. For those interested in clean energy initiatives, the American Clean Power Association (ACP) is a relevant organization that advocates for clean energy technologies like wind, solar, and energy storage[7].