7.4.4.1 Negative Impacts
Electricity production from biomass is similar to the thermal power plants with fossil fuel combustion (coal, gas). Therefore, correspondingly similar negative effects can be observed in biomass power plants in relationship to the emergent flue gas and solid and gaseous pollutants, as in the case of thermal power plants. The difference, in comparison with thermal power plants, is in significantly lower values of carbon dioxide (CO2). According to other information, the greatest danger represents escape of PM10 and PM2.5, because filters cannot capture them and these particles are inhaled by humans. Impacts on the landscape usually have a visual character.
7.4.4.2 Positive Impacts
The technology of direct combustion of biomass is the most common way of its energy exploitation; methods of biomass modification to biofuels such as pyrolysis, gasification, aerobic putrefaction, and fermentation are also possible. Modern combustion facilities are able to burn almost any treated or untreated organic material. Given the impacts on the environment, burning of wood waste, agricultural production waste, and municipal waste especially has significance.
7.4.3 Geothermal Power Plants
7.4.5.1 Negative Impacts
There is a risk of possible release of toxic compounds from the bore (e. g., boric acid) or radioactive radon directly from the thermal water or steam. There are also other frequently identified impacts, especially on the landscape character, and common impacts on the landscape are usually visual.
7.4.5.2 Positive Impacts
A geothermal power plant is characterized by high performance in a permanent work regime and does not produce any technological waste or pollutants.
