Asked by AFP, the White House did not confirm that such a plan is being considered by the president, who has struggled to fulfil his campaign promises on fighting climate change, with most of his initiatives blocked by lawmakers in Congress since 2009.
According to the New York Times, Obama will bypass legislative avenues by using his executive authority to force coal power plants to reduce their emissions by 20 per cent. The president plans to announce the program on Monday, the newspaper said.
The plan risks sparking hostility from local governments under Republican control, which have already brought lawsuits over whether the Environmental Protection Agency, under Obama's executive authority, has the power to regulate emissions.
The expected presidential announcement would be part of a set of initiatives he unveiled in June 2013 to reduce greenhouse gas emissions by 17 per cent from their 2005 levels by 2020.
The White House laid the groundwork for these latest possible measures in early May, when it released a massive report on the economic and physical effects of climate change, which it said were already evident in the United States.