Bioplinska elektrana Orehovec: 1.2 MW

  • Selected Technology: agriKomp
  • Contractors: agriKomp Bohemia s.r.o. and Hidroregulacija d.d.
  • Investment Value: 4,467,382.00 EUR
  • Startup: in operation


The 1.2 MW biogas plant for power generation is located in Sveti Petar Orehovec (Sveti Petar Orehovec community) in Koprivnica-Križevci County. In the rural area of Sveti Petar Orehovec, the construction of a biogas plant is an essential part in the agricultural process, because it is possible to obtain heat and electricity and provide excellent fertilizer (co-substrate). In 2015 started the construction of the biogas plant for the production of electricity and the completion is planned for 2018. A trial run started in May of 2016, and the full-time operation would start in July 2016.



Figure 1: 1.2 MW biogas plant in Orehovec.


The biogas plant will be continuously filled and will work in the medium or the mesophilic temperature range, in an anaerobic environment, hence the environment without the presence of oxygen. The energy value of the biogas thus obtained is 5.2 to 6.5 kWh / m3 of biogas. In the production or cogeneration process 83.8% of usable energy is produced, while the remaining losses are in the conversion. Approximately 42.1% of electricity and 41.7% of thermal energy are produced.

 The produced electricity is delivered to the grid, while the heat produced will be used for the processing of biogas raw material (Figure 2).

Figure 2: Proposed Biogas Plant Scheme

 Input material (biomass)

 Biogas production materials are divided into two main groups:

  • Substrates:
  •      Fertilizers: beef and pig manure and manure, poultry manure;
  •      Plant biomass: corn, wheat, wheat and grass silage, fresh grass clippings, stem remains, products;
  • Co-substrates or waste from the food processing industry:
  •      Animal by-products including food, fat, fruit and vegetable residues, compost, industrial waste water rich in proteins and carbohydrates, fat-removing substances.


For the production of electricity from biogas it is necessary to provide sufficient amounts of biological waste. Another important material in biogas production is manure (liquid cow manure) which will be delivered by cattle farmers and farmers from the region. A purchase agreement for a period of 15 to 20 years has already been signed with the farmers. The manure is a problem for livestock farmers because of the legally prescribed method of disposal (in accordance with the Nitrates Directive of the European Union) so the farmers will transport it to the biogas plant. In the process of biogas production through anaerobic digestion, apart from the raw materialthe substrates are alsoused. Different types of biomass can be used for the substrate in the biogas production. Due to the favorable characteristics and proximity of the supplier, silage is used as a substrate for biogas production in the biogas plant.

A 14-year contract with the Croatian Energy Regulatory Agency (HROTE) has been signed for the purchase of electricity by a preferential feed-in tariff, which is corrected annually by inflation and rising energy prices.




Biogas power plant Orehovec:

  • Selected technology: AAT

The subject of the investment is the construction of a primary processing plant with a capacity of 23,000 tons per year in the Sveti Petar Orehovec municipality (Sveti Petar Orehovec) in Koprivnica-Križevci County. In a rural area such as the Sveti Petar Orehovec settlement, the construction of a biogas plant and bio-processing plant is an appropriate system for closing the production-processing agricultural process, as it is possible to obtain heat and electricity as well as to provide excellent fertilizer as a processed coarse stem. Along with the already built biogas plant, a primary processing plant will be built. The construction of the primary processing plant is scheduled for April 2017, and will be commissioned in the second half of 2017.

Figure 1. Food Usage Opportunities

Investing in products destined for all biogas plants will yield synergistic effects; Will link increasing the utilization of biogas plant production capacity, increase the utilization of waste heat energy facilities, increase the use of renewable energy sources and enable the product that is superseded for corn silage.

Directive 2008/98 / EC sets out basic concepts and definitions relating to waste management, such as waste definition, recycling, recovery. This includes two new targets for recycling and recovery that are to be achieved by 2020: 50% preparation for reuse and recycling of certain waste materials from households and other similar households. The directive requires Member States to adopt waste management plans and waste prevention programs.

The biotope processing plant will meet two critical needs:

  1. Municipalities will provide a cost-effective alternative to waste disposal (Directive 2008/98 / EC on Waste, and
  2. It will meet the growing demand for AD as the main way of converting waste food into renewable energy sources.

The biotope processing plant will offer:

 Customized local solution for bio-waste management

 Large waste disposal capacities

 Comprehensive solution for packaged and unpackaged, solid and liquid waste of food

 Our service is a cost-effective solution

 A cheaper way of disposing and recycling waste food from landfills

 Long-term contracts offer security

✓ Sustainable waste treatment

 Reduced emissions of carbon dioxide

 Ecological solution for renewable energy production and nutrient rich in nutrients

 Security against the proposed substantial increase in landfill tax

For the purpose of processing the primary substrate with the biogas plant it is anticipated to build the plant for processing it. The primary substrate is delivered to trucks in the area of ​​raw material reception.

The key numbers of non-hazardous waste that can go to anaerobic digestion listed in the by-product rules and the abolition of waste status (Pursuant to Article 15, paragraph 9 of the Waste Management Act (Official Gazette 94/13)).

Figure 2: Displacement and decomposition system


Due to its technical characteristics, only clean biotope can be recovered, without the addition of inorganic origin. However, large amounts of bio-waste come in packagings, so before entering fermenters it is necessary to separate organic from inorganic waste. Therefore, the biogas plant from the many available types of biotope in the cities must contain the part where pre-treatment is taking place. This part of the process removes all impurities.

  •  Biogas production from bio-waste collected in cities requires the construction of a plant that needs to be tailored to the composition of this waste. This means that a significant part of the investment must be intended for pre-treatment of input raw material in order to prepare it adequately for fermentation. Nevertheless, a profitable facility can be built. However, it should always be borne in mind that the above mentioned two important aspects have already been mentioned: renewable fossil energy exchanges are contributing to the protection of the environment through the energy recovery of waste that is now largely disposed of at the landfill and reducing greenhouse gas emissions.






Address:  Bioplinska Elektrana Orehovec 1 d.o.o.

                      Sveti Petar Orehovec 97/A

                      48267 Sveti Petar Orehovec

Phone: +385 48 850 134