Iceland, highest geothermal share

"Iceland prides itself in being nearly 100 percent renewable in primary power production", the highest share of any country ."Nearly all Icelandic homes and businesses are heated with renewable energy, approximately ninety percent of which is derived from geothermal sources, while the remaining ten percent is from renewable electricity. Additionally, there is a new industry developing within and alongside the geothermal industry. This emerging industry uses the other “streams” from the geothermal utilization process with innovative new technology . . . Iceland’s major national effort turning to geothermal occurred in response to the 1973 oil crises, as global crude oil prices increased 70 percent. At that time, approximately half of all houses in Iceland were heated with imported fossil fuel, at a great expense to the country. Concerted efforts and long-term political vision, along with an important support mechanism, transformed Iceland into a clean energy economy within just two decades."