Greenhouse gases (GHG) represent one of the main causes of global warming. Carbon dioxide emissions are related to fossil fuels, that supply over the 50% of the global energy production. Renewable resources are the pathway to reduce GHG emissions, but currently they can not satisfy the energy demand due to high fluctuations in the power generated. Salinity gradient power (SGP), or blue energy, allows to produce energy from mixing water solutions that have different salt concentrations, including seawater and fresh water. This process has gathered more attention over the years since it allows to employ an unlimited and sustainable source like seawater.