Wins systems are extremely expensive and produce roughly 10% of the power they are rated at. A wind system I visited yesterday in Michigan will pay for itself in just under 200 years, unles it has a breakdown.
Fossil fuel plants must also run to supply backup power to these wind systems. This fuel consumption is ignore to maintain a "green" status for the wind turbines. If we included this fuel into the overall power used to build, maintain and run wind turbines, the numbers would come out worse then a coal plant.
wind energy is only air but wind mills and wind turbins are about 5m to 10m dollars... so yes they are expensive.
is oil cheap or expensive
no but yes. it is the most cheap form of electricity but is way more money then buying an old power plant.
Its expensive
Expensive, costly, precious, priceless, or valuable. Those are opposites of cheap.
expensive
expensive opulent, expensive, pricy, highbrow,
I wouldn't say so. It is being made more expensive in many countries by subsidies given to wind and solar power production
Nylon is not an expensive material.
Cheap
or
It isn't "cheap" but it isn't as expensive as oak.