wind energy is only air but wind mills and wind turbins are about 5m to 10m dollars... so yes they are expensive.
Solar and wind energy are the only 'cheap' energy there.
no but yes. it is the most cheap form of electricity but is way more money then buying an old power plant.
Wnd energy is free
yes
Expensiveeeeeeeee (: x
because it's natural and you don't have to pay to get wind!
maybe and maybe not, who knows ! :)
no not at all very expensive
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.
well, wind is free, but u have to biuld turbines, which are NOT free, so not really...
is oil cheap or expensive