how much does a small windmail give of energy?

Answer 1

A wind-mapping study of the Phils. completed in 1999 showed over 10000 sq.m. of lands with sufficiently strong winds for power generation, with potential capacities about 70 000 MW, but not even a fraction of this is realized....
Philippine Wind Power Generation Capacities
10 kW, Pagudpud, Ilocos Norte
25 kW, Picnic Grove, Tagaytay
25 kW, Gen. Santos City
3 kW, Bantay, Ilocos Sur

Answer 2

'Wind power is the conversion of wind energy into more useful forms, usually electricity using wind turbines. In 2005, worldwide capacity of wind-powered generators was 58,982 megawatts; although it currently produces less than 1% of world-wide electricity use, it accounts for 23% of electricity use in Denmark, 6% in Germany and approximately 8% in Spain. Globally, wind power generation more than quadrupled between 1999 and 2005.

Most modern wind power is generated in the form of electricity by converting the rotation of turbine blades into electrical current by means of an electrical generator. In windmills (a much older technology) wind energy is used to turn mechanical machinery to do physical work, like crushing grain or pumping water.

Wind power is used in large scale wind farms for national electrical grids as well as in small individual turbines for providing electricity to rural residences or grid-isolated locations.

Wind energy is ample, renewable, widely distributed, clean, and mitigates the greenhouse effect if used to replace fossil-fuel-derived electricity.

Wind energy
An estimated 1% to 3% of energy from the Sun that hits the earth is converted into wind energy. This is about 50 to 100 times more energy than is converted into biomass by all the plants on earth through photosynthesis. Most of this wind energy can be found at high altitudes where continuous wind speeds of over 160 km/h (100 mph) occur. Eventually, the wind energy is converted through friction into diffuse heat all through the earth's surface and atmosphere.

The origin of wind is simple. The earth is unevenly heated by the sun resulting in the poles receiving less energy from the sun than the equator does. Also the dry land heats up (and cools down) more quickly than the seas do. The differential heating powers a global atmospheric convection system reaching from the earth's surface to the stratosphere which acts as a virtual ceiling.

You could get more information from the link below...

Answer 3

Do a search on windmill generators and CMS Mgnetics.

A 103" diameter windmill can generate 600 watts at 17.9 mph windspeed.

Answer 4

around 150 mw
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