Benjamin Romano Seattle Geothermal development in the US is 12% ahead of where it was 12 months ago and appears to be recovering momentum lost during the recession, according to a report from the Geothermal Energy Association (GEA).. The only geothermal project to come on line in the US in 2010 was a 15MW Ormat Technologies plant. This represents the lowest increase in annual capacity since at least 2005..