Biomass power

Biomass energy is relatively inexpensive as the RES. The main reason of that state is well know technology and adaptation possibility of existing units. Investment costs of biomass power plant is between 2225 and 2995 €/kW of electricity and from 2600 to 4375 €/kW in case of the CHP generation. Due to adaptation of existing units, co-firing investment cost is much lower and fluctuate between 450 and 650 €/kW of electricity installation and for the CHP installation. That relatively low cost are related with modification of existing devices. Much higher investment cost is in case of waste incineration plants. It is between 5500 and 7125 €/kW in case of only electricity generation systems and from 5800 to 7425 €/kW for the CHP generation systems. Estimated live time all of described units is about 30 years however long experience in heat power plant generation shows that such a power plant may work 40 or even longer. Operating and maintenance cost of biomass plant is about 84 – 146 €/(kW*year) and depends from power plant age. If the unit operates in the CHP generation system O&M cost are a bit higher, from 86 to 176 €/(kW*year). Co-firing power units has the lowest O&M costs which fluctuate between 65 and 95 €/(kW*year) for electricity generation only and from 85 to 125 €/(kW*year) for the CHP generation systems. Waste incineration plants O&M costs are from 145 to 249 €/(kW*year) for electricity generation only and from 172 to 258 €/(kW*year) in case of the CHP generation systems. All of described technologies are supported in the EU membership countries and energy production is supported by six financing instruments. Moreover generation by biomass combustion increase participation of green energy in electrical system. Due to seasonal availability of biomass, the average annual operation time is about 7000h. [43]

Biogas power

In comparison with the other RES technologies, biogas combustion is one of the cheapest technology. Investment cost of power unit which combust agricultural residues fluctuates between 2550 and 4290 €/kWh for electricity generation only and from 2765 to 4525 €/kWh if the unit works in the CHP system. That mode of biogas units operation is the most expansive. Much cheaper are installations which use fuel from landfill. Investment cost are from 1350 to 1950 €/kWh if power plant generates only electricity and from 1500 to 2100 €/kWh if the heat are second product. A little much expansive are objects which combust gas obtained from sewage. Then investment costs are between 2300 and 3400 €/kWh fro electricity generation only and from 2400 to 3550 €/kWh for the CHP systems. Average life time is about 25 years. During that time power plants operates and are services with what O&M costs are related. Moreover it includes also the fuel price. The O&M costs of biogas units which obtain fuel from agricultural residues is about 115-140 €/(kW*year) for electricity generation and 120-145 €/(kW*year) for the CHP systems. Exceptionally low the O&M costs have power plants which uses landfill gasses, from 50 to 80 €/(kW*year) for electricity generation only and from 55 to 85 €/(kW*year) in the CHP systems. It is related with low price of the fuel. Investment sewage gas plant fluctuates between 115 and 165 €/(kW*year) if power unit generates electricity only and from 125 to 175 €/(kW*year) for the CHP system. Typical sizes of the biogas power plants are from 0,1 to 0,5 MW for objects which use agricultural biogases, from 0,75 to 8 MW in case of landfill gasses and from 0,1 to 0,6 MW in case of sewage gasses. All of described technologies are supported in the EU membership countries and energy production is supported by six financing instruments. Moreover generation by biogas combustion increase participation of green energy in electrical system. Due to seasonal availability of biomass, the average annual operation time is about 7000h. [43]

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