Wind turbines, as the name suggests, require wind to work. Wind is much more powerful higher up in the sky, and that is why wind turbines are relatively tall, at close to 30 meters. This height makes it possible for the rotor to obtain more exposure to the wind and thus create far more electricity. All of this does not matter if there was no wind to begin with. Historical weather information is carefully analyzed to pick sites that will deliver sufficient continual winds for the turbines. One excellent location is in coastal zones because there are typically consistent wind patterns in these places. Although wind speed is the most crucial variable to measure, wind direction will also have an impact on the performance of the installation. A time tested layout, adapted from the original wind powered water pumps, uses a tall fin to point the propeller straight into the wind, regardless of the direction it originates from.