Biogas plant in Pisarovina

Project title: Biogas CHP „Biogas power plant Pisarovina 1200 kWel“
Investor: ECO-BIOGAS d.o.o.
Location: Pisarovina, Croatia
Construction completion: 2020

Project description

Reasons for investing:

Simultaneous production of electricity and heat from renewable energy sources;
Disposal of slurry, grease content and other forms of biomass used as energy source;
Enrichment and increase of soil quality by applying digestate (nitrogen mineralization, humus renewal);
Diversification of electricity sources and increasing Croatia’s energy independence;
Increasing the share of renewable energy sources in electricity production (CO2 neutrality);

The production of biogas, i.e. electricity and heat from various forms of biomass in biogas plants is an example of a complete and sustainable, environmentally friendly way of energy management.

Various forms of biomass (corn silage and silage of energy plants, fat content, slurry) are used as energy source which, through process of anaerobic fermentation, produces biogas that is used as fuel in a biogas engine for the production of electricity and heat. The produced thermal energy is used to a lesser extent in the technological process of biogas production, and most of it represents the potential for further use in district heating systems, greenhouses, pasteurization, drying and biomass preparation, etc. The product of anaerobic fermentation is, in addition to biogas, a digestate which when applied on arable land, increases soil quality.

Results of equipment and facility dimensioning:

Annual tank of solid raw material (biomass) with a total volume of ~14000 m³
Fermenter and postfermenter each with a volume of ~3850 m³
Final digestate tank with a volume of ~10800 m³
Biogas engine with an electricity generator of a total electric power of 1501 kWel and thermal power of 1515 kWt

Enerkon participated in the project through following activities: