Biogas plants have several components, including:

Mixing tank:

Where feed material is collected and mixed with water to create a slurry.

Digester:

Where the slurry is fermented to produce biogas.

Gas holder:

Where the biogas is collected and stored until it is used.

Heating:

Some feedstocks may need to be heated to a specific temperature to enhance the activity of microorganisms in the digester.