With a capacity of 1,070 megawatts and a price tag of $1.45 billion, the Nam Theun 2 Dam in Laos is the biggest hydropower project that the World Bank has approved in more than ten years. A large reservoir and the diversion of the Theun River into another major river will affect more than 100,000 people, and the project’s benefits are unlikely to reach the country’s rural poor.