Concretizar Engenharia de Obras Ltda. (Concretizar) is a Brazilian contractor particularly focused on infrastructure and power generation sectors. The company has built several small hydroelectric power plants, such as 17MW Flor do Sertão, 26.5MW Angelina, and 29MW Tamboril plants. It was also responsible for building Alupar's Verde 08 mini hydro plant, with an installed capacity of 30MW, located in the municipality of Santa Helena de Goiás. Concretizar was founded in 2003 and is based in Curitiba, state of Paraná.