Key points
It has to be solar and wind powered
It has to be free funded by sponsors and advertising
It has to be made with cheap components
It has to be built as repeaters and a mesh network
It will collect information such as temperature wind speed and direction as well as rain fall
I will try and involve Philipe Stark since he owns a house in Formentera and has an interest in wind power and ecology.
Below existing equipment
Philipe Stark Wind Turbine