Biogas is created when natural

waste is decomposed.

Small bacteria create the biogas.

This process has been done by

nature for millions of years.

This is the product which the

biogas system produces.

First the material is collected in a pit

In the pit they mix the materials

The organic material is filled

into the pit

A mixer moves the organic

material so that the bacteria

can always work

The mixture is pumped in a bottle withthe bacteria.

The biogas, which has been produced, isburnt in an engine to produce electricityand heat.

The biogas is pumped under this

big black roof and then into the

engine

The rest is used as a fertiliser for farmers

PitBacteria

Heat

ElectricityFertilizer

Corn

Pro No fossil fuels are used

Renewable energy

Neutral CO2-production

Can produce both heat and

electricity

Synthetic fertiliser is saved by

using the bi-product of a

biogas-plant

Cons Cultivable land can no

longer be used to harvest

food

Price for farmland increases

and food can become more

expensive

Disadvantages of wind energy

Disadvantages of wind energy

Disadvantages of wind energy

high cost factor› frequent servicing › high wear and tear by sand and salt

› prevention of possible landslides or earthquakes

they start becoming worth after 5 -10 years → because of high costs, for the power plants and including necessary for dams

Disadvantages of tide plant

nature damage

Fauna & Flora lose their habitats

fertility adjoining meadows, fields

and pastures sink, due to water stops