On Monday, the Environmental Protection Agency (EPA) unveiled a proposal that would cut power plant emission by 30% before 2030. If implemented, the proposed rule could very well be the most ambitious environmental initiative in U.S. history.
The energy sector accounts for about one-third of all carbon emissions in the United States, according to the EPA. Trimming the pollution from that sector of the economy could be accomplished through a number of means, and the proposed rule would allow states to take advantage of many of them: Cap-and-trade, investment in alternative energy sources, and so on.
EPA Administrator Gina McCarthy had previously hinted that the EPA would soon be proposing a “controversial” rule. However, she also said the rule would provide states with considerable flexibility in implementation. In a Monday speech, McCarthy reiterated that view in a speech unveiling the rule’s full details.









