Wind power is cost-effective. Land-based utility-scale wind is one of the lowest-priced energy sources available today, costing between two and six cents per kilowatt-hour. The electricity from wind farms is sold at a fixed price over a long period of time (20+ years) and its fuel is free. Wind energy mitigates the price uncertainty that fuel costs add to traditional sources of energy. It's also sustainable; wind is actually a form of solar energy. Unlike several other energy sources, wind energy is free. There’s no market for the supply and demand of wind energy; it’s there to be used by anyone and will never run out!