http://www.unendlich-viel-energie.de/uploads/media/AEE_Strommix-Deutschland_2011_Jan12.pdf

Energy mix in Germany in 2011 Renewable energies made up 20% of gross energy generation

natural gas

hard coal

nuclear energy

lignite

renewable energies 20%

others Wind energy

Biomass energyIncluding energy from waste

Water power

photovoltaic

total

How a biomass

cogeneration plant works

Biomass cogeneration plant Neustrelitz (housing estate of Kiefernheide)

In operation: since January 2006

Production/year: - electricity: 45.000 MWh/a,

- heat: 63.000 MWh/a

Resource base: wood chips from forest wood waste, tree and shrub cutting (85.000 t/a)CO2 conservation: 14.577 t/a= CO2 emission of 7.000 cars

pellets

combustion chamber

conveyor belt

cold water

fire

hot water au

tocla

ves

steam

turbinegenerator

district heating grid

emissionfilter

steam

Wind energy

- electricity from wind energy is clean and reduces the emission of greenhouse gases (per 1 kWh = avoidance of 860 gramm of CO2)- wind power = the dominating field of generating energy

among the renewable energies in Germany- In the end of 2011 : Germany = third largest capacity of

the world with a capacity of 29,060 MW

http://en.wikipedia.org/wiki/Wind_farm#European_Union

Wind farm in Lower Saxony Wind park landscape in Mecklenburg

http://en.wikipedia.org/wiki/File:Windkraftanlagen_in_Deutschland.png

Location of wind turbines in Germany , 2011

• most located in the north• But: most energy needed in the west and south where large industries are concentrated

http://www.faz.net/aktuell/wirtschaft/windraeder-in-deutschland-durchs-land-der-riesen-11638103.html

http://www.unendlich-viel-energie.de/uploads/media/Leistungsentwicklung-Wind.pdf

Development of wind energy since 1990

Types of wind farms• Offshore • Onshore

http://www.unendlich-viel-energie.de/uploads/media/Strom_aus_Windenergie.pdf

Energy from wind power in Germany until 2020

offshore

onshore

http://www.google.de/imgres?imgurl=http://www.faehrhafen-sassnitz.de/wp-content/uploads/2011/11/Karte_Windparks_Offshore_neu4_blau_Pantone-0612114.jpg&imgrefurl=http://www.faehrhafen-sassnitz.de/geschaeftsbereiche/offshore/offshore-potentiale/&h=1514&w=3104&sz=249&tbnid=fYaCuFL_YBbM1M:&tbnh=58&tbnw=119&zoom=1&usg=__zISyaz6eO5PwVsVlyE0vjgsGfJE=&docid=rMorCJukjKKRxM&sa=X&ei=48_xUOapHeyQ4gSnxIG4BA&ved=0CHAQ9QEwCA&dur=1980

Offshore wind farm projects at the coast of Mecklenburg- Western Pomerania

Baltic 1 Offshore Wind Farm

- first commercial offshore wind farm of Germany in the Baltic Sea- located about 16 kilometres north of the Darss- Zingst Peninsula- covers about seven square kilometers - 48.3 MW wind farm.- work started in July 2010; officially commissioned on 2 May 2011- Baltic 2: 288 MW from 80 turbines

http://en.wikipedia.org/wiki/Baltic_1_Offshore_Wind_Farm

1. Foundation2. Connection to electric grid3. Tower4. Access ladder5. Wind orientation control6. Nacelle7. Generator8. Anemometer9. Brake10. Gearbox11. Rotor blade12. Blade pitch control13. Rotor hub

What does a wind turbine look like?

What does a wind turbine look like?

- wind = a low cost, low maintenance energy production method

- wind energy works by using natural wind movements, capturing it as kinetic energy through turbine blades, then converting the kinetic energy into electricity through an

electro magnetic generator at the top of the turbine- electricity output depends on

different aspects:1. location (how much wind

there is), 2. turbine size and style,

3. rotar diameter

How does wind energy work

How much electricity can a turbine produce?

1 wind turbine generates energy for a small town(at a capacity of 5 MW it generates 17 millions kWh per year = consumption of 4.900 households with 14.600 people)

- depends on the size and possible capacity of a wind turbine(example: wind turbine of a capacity of 2,5 MW 5 mill. kWh/year)

- also depends on the wind speed need at least 3 to 4 m/s; wind speed over 25m/s turbines are switched off

Wind speed Generated energy/day

Electricity for households/day

2m/s

7m/s

12 m/s

20 m/s

25 m/s

none

228 480 kWh

979 680 kWh

1 104 000 kWh

wind turbines are switched off

none

5781

24789 ?