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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
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