Even without the liquid nitrogen, I'm skeptical about the long term viability of wind turbines. It's nice that there's world-wide interest in investments to build these things, but the idea is that they will eventually pay for themselves. They don't produce much power in the first place, so making them "more efficient" with liquid nitrogen isn't going to help much.
My parents still live in northwest Ohio where I grew up, as do most of my aunts, uncles, cousins, etc. I have some cousins that own farmland in that area. A few years ago, a group came through offering to pay top dollar for little squares of their farmland to build wind turbines. The farmers thought it was a terrible idea because the wind rarely blows in this area of the country except during thunderstorms, which are rare, and the wind is too strong to allow the wind turbines to spin in a storm anyway. Of course, the salesmen weren't engineers so they ignored all this, and the farmers needed the money, so the deals were struck. Now there is a ~10 square mile region where you can see wind turbines from horizon to horizon in all directions. It's creepy. Unreal. It's like you're living in the future. It's especially creepy at night because there are red lights on top of each turbine that all blink slowly in unison, from horizon to horizon, like some alien heart beat. Imagine trying to sleep in this area with a pulsing red glow coming through your window.
The locals hate them. Most of the time, none of them are turning. The local power companies got stuck with the bill, so they tried getting the locals to sign up for the much more expensive "green power" option, on account that the power comes in part from the wind turbines, which are never turning. Of course, they don't generate enough power to supply even a fraction of the local community, so even if you do sign up for this option, most of that money is going toward paying off the bill for building the turbines, and 99+% of your power is still coming from coal/nuclear.
My prediction is that these monsters will need costly maintenance (gear and brake replacement, rust removal, blade sharpening, etc) long before that cost to build them in the first place is paid off. Once the general public starts waking up to find that wind farms are money pits, they will be abandoned. Thousands of giant, rusting eyesores, all over the world.
The biggest haters of wind turbines at the moment are ecologists, particularly those interested in birds. The land beneath these turbines are littered with hundreds of dead birds, who can't see or feel the blades before it's too late. I saw a red-tail hawk get massacred by one with my own eyes while visiting home a couple years ago.
Not to mention that these things are a hazard to locals who live underneath them. When they fly apart, the debris is thrown for up to a mile. Would you want to live within a mile of one of these things during a storm? Each blade is 30 feet long, which is longer than a typical tractor trailer.
Oh, and they were build on muddy clay soil and there wasn't much forethought into digging into the ground to ensure that they have a stable base.......so.....they sometimes fall down.
Oopsies. Good thing there wasn't a house, or a cow, or a child playing underneath that one.
Oh, and they can catch on fire....more than you think.....
https://www.telegraph.co.uk/news/earth/ ... -warn.html
As you can tell, I'm not a fan
of wind turbines
It's been 40 years since we've built a nuclear power plant. The technology has come a very long way. It might even be possible to build a solid state nuclear power plant that doesn't burn down and produces little to no waste. Can we please drop this silly hippy dream of sustainable wind farms and go back to the nukes please?