Renewable energy sources have been being of rising importance in the last few years. Rising energy prices due to the world wide increasing energy demand, combined with the growing awareness of the limited availability of fossil energy resources and the increasing climatical and environmental problems have forced considerations about renewable energy sources. In Austria, especially the energy supply through the biogas production out of agrarian biomass has become of major importance. Among the energy crops, maize is the most commonly used one, because maize has the highest yields potential among the local cultivated crops. Energy-maize achieves high biomass yields and high specific methane yields. On the basis of this diploma thesis have been shown, which varieties of maize are suitable for the biogas production under the local climatic conditions of the northeast Hausruckviertel, located in Upper Austria. The varieties are analysed on the criteria biomass yield, specific methane yield, methane yield per hectare and optimum harvesting time. The specific methane yield is estimated from the nutrient composition of the maize plants by means of the methane energy value model. The results show, that the medium ripening varieties (FAO 320-350) and the late ripening variety (FAO 370) are the most suitable ones for the biogas production. These varieties, which are characterised through high biomass yields (up to 25 t dry matter), achieve methane yields beyond 8.000 mN CH4 per hectare. The time of harvesting has a key influence on the methane yield per hectare. In case of a dual utilisation of maize plants, the late ripening variety (FAO 370) is also the best performing one. The late ripening varieties stay longer in the vegetative period and achieve so higher yields (up to 10,5 t dry matter and beyond 3.000 m3N CH4 per hectare) out of the remaining plants (plants without the maize- cobs).