When President Olafur Ragnar Grimsson of Iceland came to open the 2010 World Geothermal Congress on April 226 in Bali with Indonesian President Susilo Bambang Yudhoyono it was as if the fiery spirit of geothermal energy was angry with the human race. The Icelandic volcano Eyjafjallajokull had thrown up huge clouds of ash, bringing Western European air traffic to a halt for days. But Grimsson came from his small island state near the Arctic circle with its population of 318,000 to inspire President Yudhoyono with his population of 230 million that Indonesia, with 40 percent of world geothermal energy resources, could succeed in developing clean sustainable geothermal energy. The World Geothermal Congress 2010 hopefully marks a turning point for an industry which just reached global electrical production capacity of 10 GWe - or 10,000 megawatts (MW) - although Indonesia alone probably needs an extra 5 GWe every year to keep up with demand. The geothermal industry is growing up, with an e...