Researchers have cataloged 426 potential tidal-stream turbine sites spread across 19 countries, quantifying a theoretical energy resource of 1,000 terawatt-hours per year from 262 of those locations.

Wind turbines and solar panels will undoubtedly play the central role. But both depend on the weather: wind turbines stand ...

Energy stocks appeal to investors for a few different reasons. They tend to perform independently of other types of stocks, so investors buy them to diversify their portfolios. Many energy stocks ...