The United States must be a force to change the energy marketplace, House Speaker Nancy PelosiNancy Patricia D'Alesandro PelosiFeehery: March Madness Without ranked voting, Pennsylvania's slim margins hide voters' preferences Dem leaders pull back from hard-line immigration demand MORE (D-Calif.) said Monday.

"We must change the energy marketplace so we can save our country and our planet," Pelosi told attendees of the National Clean Energy Project Roundtable held Monday in Washington. "It is a moral, environmental and health, economic, and national security issue."

Pelosi touted Congress's work under her leadership to address environmental issues, including provisions in the most recent stimulus package, and the establishment of the Select Committee on Energy Independence and Global Warming.

America is at a "crossroads" when it comes to energy policy, the Speaker asserted, and said she is hopeful to set a renewable energy standard this year. Pelosi said she hoped to set a standard of 25 percent renewable energy in American supply by 2025.

The Roundtable, hosted by the liberal think tank Center for American Progress, was held at the Newseum, and included speeches from