Top 10 countries investing in clean energy (16 images)

For the first time, China leads the world in clean energy investments. With $34.6 billion in 2009, China was making up 30.5% of the G-20 nations’ total investment in renewable energy. Below: U.S. Secretary of Energy Steven Chu (R) looks at tubes carrying algae, a promising oil alternative, in Tianjin on July 17, 2009. (UPI Photo/Stephen Shaver)

From 2005 to 2009, the wind power represented 71.1% of the global Chinese investments in clean energy. The solar energy is the second Chinese key renewable energy sectors, with 8%. China is the world's largest solar-panel producer. Below: Chinese employees work at the Yingli Group's photovoltaic manufacturing plant, building solar power modules, in Baoding City, Hebei Province on June 24, 2009. (UPI Photo/Stephen Shaver)

The United States has dropped to the second place, with a total investment in clean energy of $18.6 billion in 2009. The U.S account for 16.4% of the G-20 nation’s total investment in clean energy. The U.S. continue to dominate venture finance and technology innovation, but it lags in manufacturing. Below: Sen. James Talent (R-MO) poses for photographers at the ethanol powered Ford F-150 outside of U.S. Capitol in Washington on May 17, 2006. (UPI Photo/Yuri Gripas).

The total U.S clean energy investments included wind power (43.1%) and bio-fuel, with 47m liters of ethanol produced, over the past four years. Below: a Public Relations employee watches the progress of a new wind turbine installation at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center near Boulder, Colorado on August 21, 2009. UPI/Gary C. Caskey

The total U.S clean energy investments included wind power (43.1%) and bio-fuel, with 47m liters of ethanol produced, over the past four years. Below: a Public Relations employee watches the progress of a new wind turbine installation at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center near Boulder, Colorado on August 21, 2009. UPI/Gary C. Caskey

The total U.S clean energy investments included wind power (43.1%) and bio-fuel, with 47m liters of ethanol produced, over the past four years. Below: a Public Relations employee watches the progress of a new wind turbine installation at the National Renewable Energy Laboratory's (NREL) National Wind Technology Center near Boulder, Colorado on August 21, 2009. UPI/Gary C. Caskey