This article present the results of calculations of cumulative energy in winter wheat production in selected organic and conventional farms in the Opole region. Selection of farms was determined by the range of the obtained production data and the possibility of comparison. The cumulative energy input associated with the production per unit of area and the calorific value of yield was calculated. The cumulative energy input associated with the cultivation of the soil and sowing, harvest collection and disposal of straw was compared. The calculation took into account the energy to run the machines and fuel consumption, as well as any other agricultural practices that distinguish the two production systems. The methods of preparing the soil, used machines and their specifications were included. Fertilizers were taken into account, both natural and mineral. The calculation also took into account the energy used in pesticides. The comparison took into account the average results of the two types of farms, quantities of harvests and achieved energetic result.