Towards reactor neutrino applied physics

Nuclear power plants are intense sources of antineutrinos. Their energy spectrum and emitted flux depend on the composition of the nuclear fuel and on the thermal power of the reactor. These properties led to potential applications of neutrino physics: they could be used to non intrusively monitor a nuclear reactor. To this purpose, a better knowledge of the antineutrino energy spectra arising from uranium and plutonium isotope fission is necessary. In these proceedings we relate about on-going simulation efforts timing at reducing the errors associated to these spectra. The generic tools under development and presented below will allow to perform scenario studies oil the feasibility of using antineutrinos to measure thermal power and to test to which precision the fuel composition can be deduced using these particles.