A Moroccan engineer Cherif Massaoudi ZOHEIR invented and patented a power plant fueled by atmospheric pressure. This concept was the subject of much research in the world without ever succeeding.
This invention has been presented to Moroccan engineers Renewable Energy Development Centre (Ministry of Energy and Mines of Morocco). She received a very positive response since it allows the free electricity generation while respecting the environment.
The principle is based on the imprisonment of the incoming air at atmospheric pressure of the moment, who is now put in a position of excess pressure in the plant. This pressure gradient allows for an outgoing air flow that generates an electric current.
It's a bit the principle of the air becomes trapped in a house jam pot, which is then sometimes difficult to open due to pressure differences between the inside and outside. Remember also that the winds are generated by differences in atmospheric pressure.
The question is whether this process can be developed on a large scale.