Investments in energy are crucial to maintaining economic growth. The demand growth drives the search for new sources that are both efficient and renewable. In this context, investments in wind power are increasing worldwide. However, in the Brazilian case, such investments have different risk factors, such as regulatory, technical and market conditions. We will use the Real Option Theory as a tool to determine the wind project’s value. This method incorporates the uncertainties intrinsic to the cash flow, and especially the flexibility of the over time decision dynamic, in the project value. In this work, we propose a methodology that analyzes the immediate project by the traditional method (VPL) and compare it with the delayed project analyzed by the two real option variations: binomial method and Contingent Claims. Thus, we intend to assess the best moment for investing in a fictitious wind farm in the northeastern area of Brazil, considering the investor can wait or execute the project right away.