Then China had to rebuild the dam in the same location a few years later because, without the flood control that Banqiao Dam was built to provide, there was regular and catastrophic downstream flooding. Anyone who blames those deaths on hydroelectric power is being less than honest. The alternative wasn't those people not dying; the alternative was them dying from dam failure anyway, but without the dam providing power in the meantime. The dam failure seems to have been a direct result of trying to use it to control downstream flooding.