Nowadays, one of the main problems in the world is the air pollution caused by the emissions of the greenhouse gases (GHG), such as carbon dioxide, ozone, nitrous oxide. These emissions are generated by several factors, including the energy sector, whose emissions due to electricity and heat, in 2016, constituted 42% of the total emissions with serious effects on climate change. In order to overcome the problem of the pollution there are essentially 4 types of “prevent actions”: tax on CO2, development of renewable energy, new tariff structures and nudge techniques. This thesis focuses on the role of the new tariff structures in encouraging people to be more aware of their behaviours and aims to understand if the different pricing policies are able to modify customers’ habits.