Apparently little happened in the way of new, operational geothermal plants in 2011, if you look at the Geothermal Energy Association's 2012 annual Power Production and Development report. Although the United States remains in the lead globally in terms of installed capacity with 3,187 MW, only 91 MW of additional capacity came on line last year (not subtracting for replaced capacity). And nearly 50 MW of this additional installed capacity was at a single plant: the Hudson Ranch 1 in California.