Wind energy is the use of airflow through wind turbines to generate mechanical energy for electrical energy. Wind energy, as an alternative to burning fossil fuels, is abundant, renewable, widely distributed, clean, does not produce greenhouse gas emissions during operation, does not consume water and uses little soil. The net effects on the environment are much less problematic than those of non-renewable energy sources.
Wind farms consist of many individual wind turbines that are connected to the electric power transmission network. Wind on land is an economical source of electric power, competitive with or in many places cheaper than coal or gas plants Offshore wind is more stable and stronger than land, and offshore farms have less visual impact , but construction and maintenance costs are considerably higher. Small wind farms on land can power some power in the grid or provide electrical power to isolated locations outside the grid.