The major problem with wind farms is that they're not controllable. Sure we can prevent wind turbines from turning. But we can't force them to turn when the demand is high. Plus, they are *inefficient*. Like, really, really bad. Most of the time, they output about 2 to 3 % of the installed power. Some spikes reach 20%, but they never last long, and are actually quite rare. The average output is 5% of the installed power. If you install a 100 MW-capable wind farm, you'll produce 5 MW on average, but maintain 100 MW worth of material. They cost a lot, but don't produce nearly enough.<br><br><br>Denmark chose to produce 100% of their electricity with wind farms. This costs a lot when there's no wind, because they have to buy electricity from Norwegian nuclear plants. This costs a lot when there <b>is</b> wind, because they <b>have to</b> give their electricity away, at any cost, to avoid damage to the continental power grid. In the end, Denmark has an extremely costly electricity.<br>Also, wind turbine blades are made of carbon fibre, and are not recyclable. This year (2020), it is predicted that Germany alone will stack 30 thousand used blades in fields, because, like tires, we have no idea what to do with these huge old blades.