Small-scale biogas plants for the self-consumption of energy – Smallbiogas

Integral waste management: Complete recovery resulting in the generation biogas and fertiliser

Energy supply: Cogeneration of electricity and heat

SmallBiogas is a personalised, scaled, and modular biogas plant for self-consumption.
The main advantages of this type of plant are:

  • Generation of biogas with organic waste
  • Solution of waste management problems
  • Management and treatment of pig slurry
  • Solves the problems caused by spills by ensuring regulatory and legislation compliance
Planta de biogás a pequeña escala
  • Biogas plants reduce the dumping of organic waste in landfills and, at the same time, reduce the contamination produced by waste disposal (reduction of odours, uncontrolled methane emissions, transmission of pathogens to animals and the soil).
  • Smallbiogas generates clean, renewable fuel -biogas- which, with minimal processing, can be used for various purposes with low emissions.
  • It improves the availability of nutrients in waste, converting organically bound and slow-decomposing nitrogen into ammonia and nitrates that are available to plants (fertilisers).
  • Different types of waste can be used:
    – Fruits and vegetables
    – Waste from brewing processes
    – Waste from seed or fruit oil production
    – Waste from flour or starch production
    – Bioethanol/biodiesel waste
    – Fish processing waste
    – Slaughterhouses and meat industry waste
    – Dairy products
    – Industrial sludge
  • It reduces pathogens, helping to break the cycle of infection and reinfection. The temperature and degree of acidity of the digestion process cause most pathogens to die.
  • It improves the rural economy by creating qualified jobs and giving added value to organic waste and agricultural products located near the plant.


Biogas is a mixture of different gases produced by the degradation of organic matter in the absence of oxygen. It is produced from a biological process where carbon-based organic matter acts as food for bacteria in anaerobic digestion. This digestion can take place in digesters (biogas plant), in a wastewater treatment plant (WWTP), or in landfills.

The following types of material can be digested: plant waste, manure, urban waste, rejects from the agri-food industry, aerobic sludge, etc. In short, any organic waste or by-product can be digested.

Potential and future

Biogas is the only energy from renewable sources that can be used for the main applications of energy (electrical, thermal or as fuel), and that can be easily stored to be used when needed. This versatility makes anaerobic digestion the best option for recovering organic waste, and in a circular economy model.

A solution to the problem of slurry from livestock farms

manual smallbiogas

Smallbiogas manual

Learn all about this renewable organic energy’s advantages for the circular economy.