Guimaraes Ferreira, Samuel, Livia da Silva Oliveira, and David Barbosa de Alencar. 2020. “Application of Energy Efficiency in A Company Through A Photovoltaic Energy System on Grid”. International Journal for Innovation Education and Research 8 (11): 634-45. https://doi.org/10.31686/ijier.vol8.iss11.2797.