New underwater turbines

This looks potentially important: a new and more efficient and easier to install way to generate leccy from tides. Read more here: New underwater turbines promise clean energy from UK tides |
Environment |
guardian.co.uk. It's a big deal because: "There is an immense potential resource of clean energy from the tidal flows around the UK: conservative estimates suggest there is at least five gigawatts of power, but there could be as much as 15GW, equivalent to 15 million average family homes. Tidal generators can harvest the energy of these moving streams, with the added advantage that the resource is, unlike wind, predictable."

UK tides ... stronger tides are yellow and red. Image: DTI