[en] The energy saving certificates (CEE) is a regulatory system obliging the energy suppliers to perform energy saving through various actions for the benefit of consumers. For communities and companies, this mechanism is an additional financial lever for their energy conservation projects. Because of this measure, energy suppliers are likely to financially support project owners. The aim of these two guidebooks is to present the energy saving certificates principles and to provide communities and companies with practical elements allowing them to integrate energy saving certificates into their energy control projects.