The urban expansion that takes place in developing countries has important impacts on environment. For that reason, it is important to supply household energy needs through renewable energies such as solar PV. Notwithstanding, as the adoption of solar PV panels in households must overcome important barriers different environmental policies are applied around the world, such as feed in tariff and net metering. This paper assesses following scenarios that consider policies to encourage solar PV adoption: a feed in tariff is applied, net metering scheme is applied, none policy is applied. The solar PV adoption is analyzed in terms of installed capacity, adopter households, potential adopter households, solar PV generation, and avoided CO2 emissions. Findings suggest that feed in tariff policy provides the best results to environment, as under this policy the highest levels of CO2 emissions are reached.