What is a wind turbine and how does it work?
A wind energy system transforms the kinetic energy of the wind into mechanical or electrical energy that can be harnessed for practical use. Mechanical energy is most commonly used for pumping water in rural or remote locations. Wind electric tubines generate electrcity for homes and businesses and for sale to utilities.
How much electricity can one wind turbine generate?
The abiltiy to generate electricity is measured in watts. Watts are very small units, so the terms kiowatt (kW, 1,000 watts), megawatt (MW, 1 million watts), and gigawatt (pronounced "jig-a-watt, "GW 1 billion watts) are most commonly used to describe the capacity of generating units like wind turbines or other power plants.
Electricty production oand consumption are most commonly measured in kilowatt- hours (kWh). A kilowatt-hour means one kilowatt (1,000 watts) of electricity produced or consumed for one hour. One 50 watt light buld left on for 20 hours consumes on kilowatt-hour of electricity (50 watts x 20 hours = 1,000 satt hours = 1 kilowatt-hour).
The output of a wind turbine depends on the turbine's size and the wind's speed through the rotor. Wind trubines being manufactured now have power ratings ranging from 250 watts to 1.8 megawatts (MW).