What’s the next big opportunity for geothermal? According to panelists at last week's Renewable Energy World North America international geothermal session, it’s emerging markets. Kicking off the two-hour discussion, special guest Agnes Dasewicz of the U.S. Agency for International Development (USAID) explained the Power Africa initiative, which launched in June 2013. USAID is attempting to unlock energy growth in six countries: Kenya, Tanzania, Ghana, Nigeria, Liberia, and — of particular interest to the geothermal crowd — Ethiopia.