énergie du vent

Currently installed capacity

Germany:

Sources: „DEWI“, Deutsche Windindustrie, Bundesverband WindEnergie e.V.

30 June 2011

Total of installed capacity = 27.981 MW

21.917 wind energy plants

Percentage on net electricity consumption: 7,4

Average of installed capacity per turbine: 1.26 MW

Differences between the federal states:

-Almost a quarter of the wind energy produced in Germany is produced in Lower Saxony (6664 MW)

-The largest share of energy supply through wind energy has Sachsen-Anhalt (52,1%)

-The lowest share of energy supply through wind energy has Berlin (near 0%)

freundederkuenste.de

Sources: „DEWI“, Wikipedia

France: 31 Dec. 2010:

Total of installed capacity = 5660 MW

4400 wind energy plants

Percentage on net electricity consumption: 1,9

Average of installed capacity per turbine: 1.26 MW

Leading regions are (2011):

-Champagne-Ardenne (870 MW)

-Picardie (776 MW)

Bretagne (659 MW)

The lowest rates are in:

-Ile de France (0,06 MW)

-Aquitaine (0 MW)

-Alsace (0 MW)

Sources: wind-energie.de, Wikipedia

Source: pictonale.net

Source: bretagne.fr

Source: ntrmonde.blogspot.com

Repowering

Source: windmesse.de

Replacing old equipment

Before

After

Source: ulrich-kelber.de

Technical Renewal

Profitability

Profitability (Germany)

The target

fossil energy -renewable energy -

Cost

Time

Advantages and disadvantages of wind energy

Advantages Disadvantagesenvironmentally friendly wind turbines generally produce

much less electricity than the average fossil fuelled power station (at the moment...)

the wind is free expensive (at the moment...)

wind turbines take up less space than the average power station

not aesthetic

safe energy, there will always be wind

wind is irregular

new jobs noisy (at the moment...)

even countries without natural resources can produce wind energy

wind energy cannot be stocked yet

How many households can be supplied by a 1MW wind turbine?

1 MW = 1000 kW

Full load hours (when the turbine produces the maximum)

in wind energy: ca. 1550h/8760h (utilization rate = ca.17,7%)

1000 kW x 1550 h = 1.550.000 kWh

An average household consumes app. 3500 kWh a year

1.550.000 kWh / 3500 kWh = 442

(A car consumes one kilowatt-hour for every kilometer)

A 1MW wind turbine can supply app. 442 households

(just imagine a 5MW turbine..)

(note:This calculation is very imprecise,

it was just to give you an idea how much energy a wind turbine can produce)

Outlook

Energy source comparison

Outlook (Germany)

Source: Spiegel.de

Future Projects

SynthesisTo achieve a long-term safe and environmentally friendly energy supply:

- greater use of renewable energies

- state subsidies (at the moment..)

- technical renewal of old equipment

What the states do:-China:2006 2,6 MW 2011 52MW(!!!)Goal 2020 200MW

Examples of wind parks: Dabancheng(500MW) ; Project: Gansu (20000MW)

-USA: 44,7 MW

Examples of wind parks: Roscoe Wind Farm(781MW); Project: Titan (5050MW)

-Germany: 27981 MW

Examples of wind parks: Alpha Ventus (60 MW); Project: BARD Offshore 1 (400 MW)

-France: 5660MW Major Project: Parc éolien en mer des Deux Côtes (705 MW)

Source: Wikipedia écrit par David WinHöfel et Christian Döbereiner