A new study may have found that Nevada leads the nation in development of geothermal projects, but the study also shows that the industry faces problems in the state for a while.The Geothermal Energy Association last week reported that 75 geothermal projects are under development across Nevada, more than double the 33 under development in second-place California.But even industry officials are tempered their optimism about geothermal's near-term future in the state.For starters, a vast majority of the geothermal projects identified by the industry association in Nevada are in the earliest stages of development.Nearly 39 percent of the Nevada projects - …