Abucon BV

Abucon BV

Biogas Installations Services


It has recently become attractive to agrarian companies in the Netherlands to invest in biogas installations. As part of its European commitment, the Netherlands has the task of generating durable energy. To achieve this task, the government has provided an attractive financial stimulation scheme for producers of green power. For agrarian companies, this subsidy offers excellent potentialities to generate extra income from the company. Furthermore, manure is a splendid supercharger for the attenuation process. Manure processing is converted through attenuation from a need to a virtue, from a cost item to a source of income. In the attenuation process, along with energy-rich agricultural products, biogas is obtained. Just like natural gas, this gas is capable of driving a gas engine. Heat and electrical energy are produced by a generator.

The energy market is becoming ever scarcer and prices ever higher. The notion of personally generating energy in the form of electricity and heat is therefore becoming ever more attractive. Primarily for one's own use, but also as an extra source of income through the sale of power to the energy companies. Furthermore, this provides a saving in the costs of natural gas.

Biogas installation operation
The heart of the biogas installation is the attenuator. This is a silo or tank into which manure and energy-rich agricultural products, for example maize (co-attenuation material) are fed daily. After heating the biomass, in the case of mesophilic attenuation at up to ca 38°C, the biological process begins, during which biogas is released in the course of 20 to 50 days.

Biogas primarily consists of methane gas (ca 60%) CO2 (ca 38%) and certain residues including H2S. After conditioning, the gas is fed to a Combined Heat and Power Connector (CHP). The biogas is burnt in a gas engine. The generator driven by the gas engine supplies electrical current which can itself be used and can be fed to the public electricity network. To this end, a contract can be concluded with an energy supplier.

The gas engine also supplies durable energy in the form of warm water of ca 80°C. This can provide the heating of homes and companies, thus economising on the costs of expensive natural gas.

Economic yield from the biogas installation.
Investing in a biogas installation has an attractive economic return and a relatively short pay-back time. For agrarian companies which, independently or in association with others, produce a minimum of 3,000 tons of manure annually, and may besides possess a quantity of co-attenuation material, a biogas installation may be interesting.

As against the investment costs, salary costs and the costs of the co-attenuation material, there are a number of incomes and advantages:

  • Sales price of electricity to the energy company, depending on day or night-time tariff, at 3 eurocent to 6 eurocent per supplied kWh. The price is dependent on the market value of electricity and may increase considerably.
  • Investment discount in the form of tax advantage. This being dependent on personal situation.
  • Saving on the purchase of electricity, because your present price is higher than the costs of the production of your own power.
  • Saving on the purchase of natural gas because the heat from the installation can be used for your own home and company and possibly also sold to third parties (neighbours).
  • Improvement to the value of the manure. The attenuated manure is attractive for use through its more favourable fertilizing effect. It is thus easier and cheaper to sell the attenuated manure.

The end result is an installation for the agrarian company which is an attractive additional income source. While the technical life of the installation is ca 15 years, the yield is so attractive that the installation can be paid off in ca 8 years.

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