As Predictable as the Tides

The first live test is underway off Maine for a new technology that relies on strong tides and currents to power underwater generators. It took innovative engineering and precision execution to make the first test happen, but it could open the door to a new renewable energy source. In Europe, South American and Japan, which have expensive grid power costs, tidal energy is expected to become competitive. This article delves deeper into the engineering behind underwater turbines.