In 2017, the world invested around 3.4 billion U.S. dollars in small hydropower technologies, down from 3.9 billion U.S. dollars in 2016.

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Investment in small hydropower technology worldwide from 2004 to 2017 (in billion U.S. dollars)

Investment in billion U.S. dollars
2017 3.4
2016 3.9
2015 3.6
2014 7
2013 5.8
2012 6.5
2011 7.6
2010 8.2
2009 5.2
2008 7.6
2007 6.5
2006 7.5
2005 7.5
2004 2.7