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.

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