Scottish tidal energy has kept a underwater turbine spinning for 6 years
Scottish tidal energy has kept a underwater turbine spinning for 6 years
apnews.com
Underwater turbine spinning for 6 years off Scotland's coast is a breakthrough for tidal energy
Submerged in about 40 meters (44 yards) of water off Scotland’s coast, a turbine has been spinning for more than six years....
The MeyGen tidal energy project off the coast of Scotland has four turbines producing 1.5 megawatts each, enough electricity collectively to power up to 7,000 homes annually.
One of the more badass sources of power. You've got uranium from supernovas, some form of captured solar energy, tapping the heat from the planet's core, or, in this case, directly slowing down the very rotation of the earth while pushing the moon away.
Let's get it to 25 hours per day, I could do with a bit more time in bed.
That planetary core thing will probably be quite a way off, tho it last for millions of years. But the whole planet is swathed in tides, in-and-out.
Yeah and any friction from tides(instead of free movement) slows the rotation and pushes the moon away. It's using the leverage of the gravity to perform work against the planet itself. Devices like underwater turbines, by extracting energy from the tidal currents, effectively increase this friction, which in turn amplifies the effect. The amount of energy naturally pulled out of this system is entirely dependent on the size of the tidal bulge and the shape of the seafloor/coast.
As for geothermal, we do use it, but only in hot spots.
Someone please calculate how much years of world energy consumtion is needed to move moon even 1 meter away. Or alternatively, how much Himalaya ranges in gravitational difference.