International District Energy Association, Oct. 14, 2016.
http://www.districtenergy.org/blog/2016/10/14/new-report-geothermal-power-market-showing-strong-growth/

"A new report by the US Geothermal Energy Association (GEA) projects sustained strong growth for geothermal power through 2016. The “2016 Annual U.S. & Global Geothermal Power Production Report” forecasts that projects now under development when completed would increase capacity outside the U.S. by 25%."