Add Yahoo as a preferred source to see more of our stories on Google. Hydroelectric stations have long generated the bulk of Kentucky's renewable energy, and each year, dams in Kentucky waterways ...

After dropping to historic levels last year due to ongoing drought and high temperatures, hydropower generated in the Northwest is expected to rise slightly this year from much needed precipitation.

After dropping to historic levels last year due to ongoing drought and high temperatures, hydropower generated in the Northwest is expected to rise slightly this year from much needed precipitation.

Persistent drought in the West over the last two decades has limited the amount of electricity that hydropower dams can generate, costing the industry and the region billions of dollars in revenue.

Bonneville Dam is the last of 14 dams on the Columbia River before it empties into the Pacific Ocean. (Courtesy of the Bonneville Power Administration) After dropping to historic levels last year due ...