A concept floated by Republican Mike Simpson, a U.S. congressman from Idaho, holds the potential to loosen the intractable logjam that has persisted for years among lawmakers, community members and federal officials to find a way to save the dwindling salmon population in the Columbia River Basin before it is too late.

The New York Power Authority is spending $1.1 billion to extend the life of the Niagara Power Project, including the 2,525-MW Robert Moses station.

Projects to build a hydropower water tunnel in New South Wales and a rail tunnel in Queensland total $7.4 billion

A newly installed $376,000 hydropower turbine in a south Seattle water main aims to generate roughly 70 percent of the annual energy consumed by the district's administrative facilities.

Pumped-storage hydroelectricity, a mature technology first developed in the 1890s, is playing an increasingly important role in the current era as wind and solar power advance. ENR takes a look at some of the largest pumped-storage facilities in the world.

Critics from industry and academia are raising questions about a study from the University of Oxford's Saïd Business School about the true cost of large hydropower dams.