Status quo biogas plants and biomethane plants

A complete list in Spanish (last update from 15th March 2012) can be found here, and under the technology name 'Biogás' 

Existing biogas plants 

See above

Existing biomethane plants

Some starting projects like Valdemingómez in Madrid

Gas grid connected biomethane plants

Valdemingómez in Madrid (just started the activity in 2012,but the plant isn't yet under normal operation)

Non gas grid connected biomethane plants


Applied upgrading technologies

Water scrubber mainly