The big deal is wind isn't 24/7. Cost per KWH produced is way high. I am totally against nuclear, but the massive wind farms producing unreliable electricity doesn't make sense for AC grid electricity. For small scale community or home use, a DC wind turbine with large battery storage is great, however solar is so much more efficient, with less maintenance and cause little environmental damage other than battery production. Hydro electric is dependable 24/7 which is necessary for feeding a massive grid. Nuclear is also 24/7 but we all know the dangers of that power. I think the work being done with the tides as generators is great. Hoping it won't cause any major issues with ocean warming or marine life of any significance. I was once an advocate of wind turbines, I even had a small one to charge batteries for my mountain cabin. However if the wind didn't blow for days and cloudy days didn't allow my solar cells (not very efficient at that time) to charge, then I had to fire up a gas generator as my creek driven waterwheel generator was steady but only a trickle charge. Other sources of generating steady AC electricity are natural gas turbines, coal fired generators, and diesel generators. Visit the Indian reservations of the western 4 corners area and it is easy to see why the coal fired power plants were built there. Hauling the coal was a minor issue, the real issue is no one wanted that horrible pollution near their city. Natural gas powered plants are used in the USA Virgin Islands. The gas is shipped in. Even with solar cells feeding the grid during daylight, they will never replace the gas powered plants because they are not a 24/7 efficient way of producing AC. The important point everyone must understand is, to feed our grid, we must have a source of 24/7 AC electricity with massive transformers to increase the voltage very high for low loss transmission over miles of wire. Humans have to control the source driving the generators. Neither wind or solar offer us this option.