The U.S. still lagged behind other nations in 2011 in the share of energy it gets from renewable sources, in spite of a more than 300% increase in funding for green power projects over the last decade.

That's the finding of a report released Monday by the Natural Resources Defense Council, which looked at green power efforts in both advanced and emerging economies around the world.

European countries still have massive debt programs, double-dip recessions and fragile banking systems, but the NRDC found that those problems haven't stopped them from getting much higher percentages of their total energy production from renewable sources.

Germany, for example, got 10.7% of its overall electricity production last year from renewable sources, followed by Italy at 6.2% and Britain at 4.2%, the report said. Among Asian nations, Indonesia was a leader with a 5.7% share of its electrical power generation from renewable sources.