Background: The search for the use of electrical energy through renewable sources is experiencing significant expansion, particularly at a time when social policies are being implemented with a focus on climate conditions. Solar energy stands out as a renewable energy source with costs that are more accessible than conventional energy sources. Photovoltaic panels for commercial use represent a smart strategy for many companies seeking energy efficiency, cost savings, and sustainability. These systems offer benefits that range from reductions in operational expenses to contributions toward corporate social responsibility goals. Materials and Methods: To conduct this study, two research methods were used: bibliographic research and documentary research. The qualitative approach employed in this article enabled a detailed investment analysis of the elements related to economic engineering applied to solar energy projects. Techniques for economic and financial viability were presented, including Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period. Results: The findings of the research demonstrated that solar energy is a viable and strategic option for economic growth in Ceará. Considering that Ceará ranks fifth in Brazil for its capacity to generate solar energy, solar power represents a promising investment alternative for the state. The study highlighted the economic and environmental advantages of utilizing solar energy. Conclusion: The research clearly shows that solar energy not only contributes to economic growth but also plays a crucial role in environmental conservation in Ceará. Achieving the objectives reinforces the importance of government policies focused on expanding clean energy sources. These policies will ensure that the benefits of solar energy extend beyond the current scenario, fostering a more sustainable and inclusive future.