On June 2, following an announcement by President Obama, the US EPA presented the Clean Power Plan, "a commonsense plan to cut carbon pollution from power plant" with the stated goal of maintaining "an affordable, reliable energy system" while reducing pollutants that are harmful to people as well as the environment."
Throughout the US, power plant emissions account for roughly one-third of greenhouse gas emissions. Currently, there are no national guidelines to limit carbon pollution levels, though the levels of other toxins, including arsenic, mercury, sulfur dioxide, nitrogen oxides, and particles, are restricted. In the US, CO2 emissions account for 82% of all green house gas emisions, according to data reported by the EPA from 1990-2012.
Although the mandate is set at the federal level, the guidelines give states the ability to establish their own internal goals and to design a program based on their specific needs and capabilities. These plans must be submitted to the EPA by June 2016. Each state's plan must have enforceable limits, and must include how the levels will be reported and monitored. There must also be a method for corrective actions for those who fall short. The EPA will require biannual reporting of the state's progress.
Once the plan is accepted, states have to reach interim goals by 2020 and have until 2030 to meet the final goal of a 30% decrease in carbon emissions from the levels reported in 2005. To put that in perspective, that is equal to the emissions from powering 65 million homes, roughly half of the homes in America.
In addition to the 30% reduction in carbon emissions, the Clean Power Plan will also result in the reduction of particle pollution, nitrogen oxides, and sulfur dioxide by more than 25 percent. Consumers should also benefit from a roughly 8 percent decrease in their electric bills due to increased energy efficiency and reduced demand in the electricity system.