maybe and maybe not, who knows ! :)
wind energy is only air but wind mills and wind turbins are about 5m to 10m dollars... so yes they are expensive.
yes
because it's natural and you don't have to pay to get wind!
I would use both. One to blow wind for my wind energy
Wind
Windmills are a good way to use wind energy
Wind energy.
Right now, Singapore does not use wind energy.
Setting up wind mills can be expensive but using the wind energy for everyday appliances can actually save you up to $2000 a year.
No. Wind farms are very unreliable as a constant source of energy. They are also expensive to build and maintain.
Wind energy
Yes its alternative is geothermal or wind energy