The final turbine of China’s massive Three Gorges Dam was connected to the grid on July the 5th, marking the completion of a controversial hydro-power project that cost the country more than $50 billion and displaced at least 1.3 million people. The installation of the project’s 32nd 700-megawatt unit brought total capacity up to 22.5 gigawatts (GW), accounting for 11 percent of the country’s total hydroelectric capacity.