President Barack Obama speaks during his meeting in the Roosevelt Room of the White House in Washington, Monday, June 24, 2013, with CEOs, business owners and entrepreneurs to discuss immigration reform. From left are, Cecilia Muñoz, direcor of the White House Domestic Policy Council, the president, senior White House adviser Valerie Jarrett, National Economic Council Director Gene Sperling, and Dilawar Syed, CEO Yonja Media Group. Obama hosted the meeting to discuss the importance of commonsense immigration reform including the Congressional Budget Office analysis that concludes immigration reform would promote economic growth and reduce the deficit. (AP Photo/Pablo Martinez Monsivais)

President Barack Obama is taking climate change efforts into his own hands, proposing sweeping steps to limit heat-trapping pollution from coal-fired power plants.

Obama will unveil his climate plan Tuesday in a speech at Georgetown University. It's Obama's most prominent effort yet to deliver on one of his major priorities. None of the steps require congressional approval.

The of the plan is the first-ever limits on new and existing power plants.

The White House says Obama hopes to generate enough electricity from renewable energy projects on public lands to power the equivalent of 6 million homes by 2020. He'll set higher goals for renewables installed at federal housing projects.

Obama is also announcing $8 billion in federal loan guarantees to spur investment in carbon-reducing technologies.