On an average day, about 160-billion tonnes of seawater flows into the Bay of Fundy. This is where an ocean research centre decided to put their tidal energy test site. According to recent models, there is roughly 7,000 megawatts of potentially extractable tidal energy in the Minas Basin. Of that number, researchers say about 2,500 megawatts can be tapped safely. That's more than enough electricity for all of Nova Scotia.