How should the energy expenditures due to the farm productions be taken into account, how should the global energy efficiency be evaluated and how can it be optimized ?

Given our constraints we have selected only a few practices to reduce energy consumption and/or greenhouse gases emissions. Indeed, some practices require further studies (the setting up of a methanization unit for example) or are not feasible in our system (pedoclimatic context, material (...)

Before changing anything on the farm, it was necessary to understand in details the way the farm works precisely, in order to determine the perimeter of our work and the relationships of the system to its environment.

An important prerequisite for the environmental diagnosis of the farm is the meticulous choice of appropriate tools enabling the assessment of the system’s performances, in terms of energy consumption and greenhouse gaz emissions. This choice of diagnostic tools was accompanied in Grignon by the creation of complementary and original (...)