so here's a curious idea;

Minesto's fully operational Dragon 12 looks like some sort of futuristic military drone – but it behaves remarkably like a kite underwater. It uses lift generated by tidal flows to fly patterns faster than the currents, harvesting renewable energy.

Solar energy is the bedrock of most renewable energy grid plans – but lunar energy is even more predictable, and a number of different companies are working to commercialize energy generated from the regular inflows and outflows of the tides.

One we've completely missed is Minesto, which is taking a very different and remarkably dynamic approach compared to most. Where devices like Orbital's O2 tidal turbine more or less just sit there in the water harvesting energy from tidal currents, Minesto's Dragon series are anchored to the sea bed, and fly around like kites, treating the currents like wind. .........more.........