The World with 25% green wind energy
How would it be if our imaginary world were powered 25% by wind energy?

Is it possible to supply 25% of the world with green wind turbine energy?
It is important to consider the possibilities that a country has. Scandinavian countries in Europe have excellent conditions for this. Wind, access to water, some sun, and plenty of space and scope. Arab countries such as Dubai, on the other hand, naturally have different conditions and high consumption. Solar energy is a good option, but there is a lot of sand in the air, which can damage electronics and accumulate on equipment on solar and wind. So we will also use the average here. That is, the average of electricity generation from wind power, for example.
Now, it is relatively difficult to say how much electricity the world consumes. The demand is probably somewhere between 25,000 TWh and 35,000 TWh according to the IEA (Statistical Review of World Energy). Adjusted for 2025, it will be somewhere in that range. We don't want to find out exactly or give precise figures because we are not an institute nor should be looked on for reliable information. All we do is speculate, question, and play mind games. Back to wind turbines
The average wind turbine on land can reportedly produce 3-8 million kilowatts per year, depending on location and position, with large ones even producing 10+ million kWh. Large wind farms in water or windy areas can produce as much as 60 million kWh (https://stromrechner.com/wie-viel-strom-produziert-ein-windrad/), (https://www.usgs.gov/faqs/how-many-homes-can-average-wind-turbine-power). It is highly likely that more onshore wind turbines will be built. But let's assume that everyone with access to suitable areas has to build x% of these. On average, we would then say that with the large ones included, we would end up with 3-60 million kWh through distribution, or rather 3 million kWh.
For example Germany has just over 30,000 wind turbines, which together produce just under 136 TWh per year. Just under 32% of all electricity in Germany comes from wind power. (https://www.destatis.de/DE/Presse/Pressemitteilungen/2025/03/PD25_091_43312.html). About 26% of wind power comes from so-called onshore wind turbines, of which there are about 29,000 in Germany. This results in an average of 0.0038 TWh per onshore turbine. Now let's take the average calculation as our avg. Which comes out to a wind turbine that produces 3,800,000 KWh per year on average.
This means that we need around 130,000 wind turbines per 500 TWh. For the entire world, if we assume 32,000 Twh (25% green, 8,000 TWh) , that would mean just under 2.1 million wind turbines.
With this, it is important to note that a concept based solely on one green energy like wind quickly falls apart. In regions with little wind or during periods of calm, there is not enough energy to meet global demand. It is therefore important to have sufficient space and diversity.
If you really rely solely on wind energy, you should build at least twice or three times as many to allow for leeway and discrepancies. Which means that between 5 and 10 million wind turbines would need to be built for 25% Wind energy. Added to this are problems such as energy storage batteries to store the electricity and of course cost. Let's assume that one wind turbine costs aroudn 6 million, which would result in total construction costs of 12.6 trillion USD. This raises questions such as where they will be built, how the construction costs will be divided, who has the right to build them, and who will be responsible for maintenance. In a perfect world, this would be possible, but it is unlikely that every country will switch to 25% wind energy in the near future. That's just for the wind turbines; you could easily take four times that amount to lay cables build ground, distribution centers, and storage facilities. In reality, you probably couldn't even cover half of it with that budget of 46 Trillion USD. But all in all, it's just a fun and exciting thought experiment.